The present invention relates to using soft photopolymer plates in a printing process for cylindrical substrates. More specifically, the present invention relates to a method and apparatus which use soft photopolymer plates to decorate the exterior surface of cylindrical metallic containers in a printing process.
Metallic containers are frequently decorated with an image or indicia, such as a brand name, logo, product information, or design, using a lithographic printing process. In lithographic printing, one or more printing plates with image regions are attached to a plate cylinder (or press cylinder) of a decorator. The image regions can include both ink receiving regions and areas that do not receive ink. An inker applies ink to the printing plates and the ink adheres to the ink receiving regions. Usually each printing plate receives a particular color of ink from the inker. The decorator also has a blanket cylinder (also known as an offset cylinder, a printing cylinder, or a segment wheel). Printing blankets (or secondary transfer plates) are attached to the blanked cylinder. Decorators used in the metallic container industry typically have from 8 to 12 printing blankets on the blanket cylinder. As the plate cylinder and blanket cylinder are rotated in unison, each of the one or more printing plates contacts a printing blanket and transfers a particular color of ink to the printing blanket. When all of the printing plates have transferred their ink colors and images to the printing blanket, the final lithographic image is formed on the printing blanket. A metallic container is then brought into rotational contact with the printing blanket of the blanket cylinder and the lithographic image is transferred from the printing blanket to the exterior surface of the metallic container.
Lithographic printing methods are described in U.S. Pat. No. 4,384,518, U.S. Pat. No. 6,550,389, and U.S. Pat. No. 6,899,998, which are each incorporated herein by reference in their entireties. The methods described in these references only allow a single lithographic image to be produced from a single set of printing plates. Therefore, the methods described in these patents are only efficient for printing the same image onto a large number of metallic containers. In order to print a different image on the metallic containers, a new set of printing plates must be installed on the plate cylinder of the decorator, resulting in downtime and decreased efficiency of a production line. Because only one image can be printed without changing the printing plates, it is economically challenging to produce small batches of decorated metallic containers with different images.
One example of providing multiple images from a single set of printing plates is provided in International Patent Publication No. WO 2014/008544, which is herein incorporated by reference in its entirety. This reference describes a blanket cylinder with printing blankets that are adapted to have inked regions and non-inked regions. The non-inked regions are recessed inwardly and are formed by laser cutting, etching, water blasting, routing, drilling, engraving, or molding. However, lithographic images produced by the non-inked regions formed on the printing blankets using these techniques do not have enough detail to be considered a high quality, high-definition image. The commercial metallic container industry requires high-definition printing in unique applications and requires distinct graphical elements that can efficiently be printed with high resolution and detail on the exterior surface of a metallic container. These high-definition images are necessary to differentiate products at the point of sale and to attract consumers.
Accordingly, there is an unmet need for a high-definition lithographic printing process that allows multiple images to be printed on an exterior surface of a metal container from a single set of printing plates without sacrificing production efficiency or image quality and detail.
The present process uses soft photopolymer plates affixed to a blanket cylinder of a decorator to significantly enhance the image quality and detail of lithographic images printed on metallic containers. More specifically, an image is transferred to a face of a soft photopolymer plate by exposing the soft photopolymer plate with light. The image can be transferred using a computer to plate process or a conventional plate exposure process. This results in a soft photopolymer plate which has relief areas that do not receive ink and hardened areas forming precise and detailed image areas that will receive ink. In some embodiments of the process, the soft photopolymer plates may also be etched or engraved on the face before, during, or after the curing process to form one or more recessed portions that do not receive ink. These and other advantages will be apparent from the disclosure of the invention(s) contained herein.
In accordance with one aspect of the present invention, a novel method of using a soft photopolymer plate in a lithographic printing process to decorate an exterior surface of a metallic container is provided. This includes, but is not limited to, a method generally comprising: (1) providing a first image to be printed onto an exterior surface of the metallic container; (2) transferring the first image to a predetermined portion of a face portion of the soft photopolymer plate; (3) removably affixing the soft photopolymer plate with a transferred first image onto a blanket cylinder of a decorator; (4) attaching printing plates to at least one plate cylinder of the decorator; (5) applying ink from an inker to the printing plates; (6) transferring the ink from the printing plates to at least a portion of the soft photopolymer plate and the transferred first image; and (7) transferring the ink from the soft photopolymer plate to the exterior surface of the metallic container, wherein the metallic container is decorated with the first image. Additionally or alternatively, the method may further comprise: (8) removably affixing from about 8 to about 12 soft photopolymer plates onto the blanket cylinder, wherein the about 8 to the about 12 soft photopolymer plates each have different images, and wherein ink transferred from the about 8 to the about 12 soft photopolymer plates produces 8 to 12 different images on about 8 to the about 12 metallic containers; (9) etching or engraving the face portion of the soft photopolymer plate to form one or more recessed portions, and/or (10) providing a second image to be printed onto an exterior surface of the metallic container, transferring the second image to the printing plates, and decorating the metallic container with the first image and the second image.
Transferring the first image to the predetermined portion of the face portion of the soft photopolymer plate generally comprises: (1) creating a film negative of the first image; (2) placing the film negative on the predetermined portion of the face portion of the soft photopolymer plate; (3) exposing the soft photopolymer plate and the film negative to a light source, wherein a material of the soft photopolymer plate hardens in predetermined locations where light passes through the film negative, and wherein the material of the photopolymer plate remains unexposed and soft in predetermined locations where the light is blocked by the film negative; (4) removing the film negative from the soft photopolymer plate; and (5) placing the soft photopolymer plate in a washing station and cleaning the soft photopolymer plate to remove the soft, unexposed material of the soft photopolymer plate to reveal the transferred first image.
Additionally or alternatively, transferring the first image to the predetermined portion of the face portion of the soft photopolymer plate may generally comprise: (1) creating the first image; (2) ablating portions of an opaque mask coating on the face portion of the soft photopolymer plate to form a negative of the first image; (3) exposing the soft photopolymer plate to a light source, wherein a polymer material of the soft photopolymer plate hardens in predetermined locations where the masking coating has been ablated, and wherein the polymer material of the photopolymer plate remains unexposed and soft in predetermined locations where the light is blocked by the mask coating; and (4) removing the soft, unexposed polymer material of the soft photopolymer plate to reveal the transferred first image.
In one embodiment, the light source is an ultraviolet light source. In another embodiment, the soft photopolymer plate and the film negative are exposed to the light source for from about 0.01 minute to about 10 minutes. In one embodiment, the washing station uses a solvent to clean the soft photopolymer plate. In another embodiment, the washing station uses water to clean the soft photopolymer plate.
The soft photopolymer plate is formed of any mixture of materials that harden or form a different texture after exposure to ultraviolet or visible light. In one embodiment, the soft photopolymer plate is comprised of one of elastomers which are cured using a light-catalyzed photopolymerization process, chloroprene crosslinked with trimethylolpropane triacrylate, and styrene-isoprene rubber with a polyacrylate. In another embodiment, before the first image is transferred to the soft photopolymer plate, the soft photopolymer plate has a hardness of from about 40 durometers to about 110 durometers. In another embodiment, the transferred first image on the soft photopolymer plate has a depth of from about 0.0009 inch to about 0.089 inch. In one embodiment, each of the different images are formed in a same location on each of the soft photopolymer plates. In another embodiment, only one of the printing plates attached to the at least one plate cylinder transfers ink to the different images formed on each of the soft photopolymer plates and each of the other printing plates attached to the at least one plate cylinder transfer ink to other predetermined portions of each of the soft photopolymer plates. In one embodiment, the metallic container is generally cylindrical in shape and the first image is transferred to a curved exterior surface of the metallic container. In another embodiment, the metallic container is generally cylindrical in shape and the first image is transferred to a substantially flat exterior surface of the metallic container. In yet another embodiment, the metallic container is not cylindrical in shape and the first image is transferred to a flat exterior surface of the metallic container.
In accordance with another aspect of the present invention, an apparatus for forming a high-definition lithographic image on an exterior surface of a metallic container is disclosed, the apparatus operable to create multiples lithographic images from a single set of printing plates. The apparatus generally comprises: (1) at least one plate cylinder with an inker, the inker operable to transfer ink to predetermined portions of one or more printing plates attached to a circumference of the at least one plate cylinder; (2) a blanket cylinder, the blanket cylinder having one or more soft photopolymer plates affixed to a circumference of the blanket cylinder, the blanket cylinder operable to move the soft photopolymer plates into rotational contact with a printing plate attached to the at least one plate cylinder, wherein ink is transferred from the predetermined portions of the printing plate to at least a portion of the soft photopolymer plates, and wherein the soft photopolymer plates each have an image formed thereon; and (3) a support cylinder, the support cylinder including a plurality of stations adapted to receive metallic containers, the support cylinder operable to receive the metallic container from a conveyor and move the metallic container into contact with a soft photopolymer plate affixed to the blanket cylinder, wherein ink is transferred from the soft photopolymer plate to the metallic container to form the high-definition lithographic image on the exterior surface of the metallic container.
In one embodiment, the at least one plate cylinder and the support cylinder rotate in a first direction and the blanket cylinder rotates in an opposite second direction. In another embodiment, from about 8 to about 12 soft photopolymer plates are affixed to the circumference of the blanket cylinder. In still another embodiment, each of the soft photopolymer plates has a different image formed thereon, and each of the different images are generally formed by: (1) creating a film negative of each different image; (2) placing the film negatives on predetermined portions of the soft photopolymer plates; (3) exposing the soft photopolymer plates and the film negatives to a light source; (4) removing the film negatives from the soft photopolymer plates; and (5) washing the soft photopolymer plates to remove unexposed soft material of the soft photopolymer plates to reveal the different images. In one embodiment, each of the different images are formed in a same location on each of the soft photopolymer plates. In another embodiment, only one of the printing plates attached to the at least one plate cylinder transfers ink to the different images formed on each of the soft photopolymer plates, and the other printing plates attached to the at least one plate cylinder transfer ink to other predetermined portions of each of the soft photopolymer plates. In one embodiment, a second image is formed on the printing plates and the second image is transferred from the printing plates to the soft photopolymer plates and then to the exterior surface of the metallic container. In another embodiment, no image is formed on the printing plates but the printing plates convey ink to the soft photopolymer plates. In still another embodiment, the metallic container is generally cylindrical in shape. In yet another embodiment, the metallic container is not cylindrical in shape. In one embodiment, the ink is transferred from the soft photopolymer plate to one or more of a generally cylindrical exterior surface and a non-cylindrical exterior surface of the metallic container.
In still another embodiment, one of the printing plates has an area aligning with and operable to transfer ink to the different images on each of the soft photopolymer plates. Each of the other printing plates have a relief area aligning with the different images on each of the soft photopolymer plates, and the relief areas will not transfer ink to the different images. The area of the one printing plate and the relief areas of the other printing plates are located in corresponding locations on all of the printing plates and have the same general size and shape. In one embodiment, the area and the relief area have a shape selected from the group consisting of a parallelogram, a square, a rectangle, a circle, or any combination thereof. In a more preferred embodiment, the area and the relief area have a generally rectangular shape.
It is another aspect of the present invention to provide soft photopolymer plate adapted to form a high-definition lithographic image on an exterior surface of a metallic container in a printing process. The soft photopolymer plate generally comprises a plate body of a predetermined size and hardness, the plate body having a face portion and a back portion, wherein the back portion is adapted to be attached to a blanket cylinder of a decorator. An image formed on the face portion by creating a film negative of the image. The film negative is placed on a predetermined portion of the face portion. The face portion and the film negative are exposed to a light source. The film negative is removed from the face portion, and subsequently the soft photopolymer plate is cleaned to remove unexposed soft material from the face portion. In one embodiment, before the image is formed on the face portion, the soft photopolymer plate has a hardness of from about 40 durometers to about 110 durometers. In another embodiment, the plate body is from about 0.04 inch to about 0.1 inch thick. In one embodiment, the metallic container has a body with a generally cylindrical shape.
The Summary of the Invention is neither intended nor should it be construed as being representative of the full extent and scope of the present invention. Moreover, references made herein to “the present invention” or aspects thereof should be understood to mean certain embodiments of the present invention and should not necessarily be construed as limiting all embodiments to a particular description. The present invention is set forth in various levels of detail in the Summary of the Invention as well as in the attached drawings and the Detailed Description of the Invention and no limitation as to the scope of the present invention is intended by either the inclusion or non-inclusion of elements, components, etc. in this Summary of the Invention. Additional aspects of the present invention will become more readily apparent from the Detail Description, particularly when taken together with the drawings.
These and other advantages will be apparent from the disclosure of the invention(s) contained herein. The above-described embodiments, objectives, and configurations are neither complete nor exhaustive. As will be appreciated, other embodiments of the invention are possible using, alone or in combination, one or more of the features set forth above or described below. Further, the Summary of the Invention is neither intended nor should it be construed as representing the full extent and scope of the present invention. The present invention is set forth in various levels of detail in the Summary of the Invention, and, in the attached drawings and the Detailed Description of the invention and no limitation as to the scope of the present invention is intended to either the inclusion or non-inclusion of elements, components, etc. in this Summary of the Invention. Additional aspects of the present invention will become more readily apparent from the detailed description, particularly when taken with the drawings.
Although generally referred to herein as “metallic can,” “metallic containers,” and/or “cylindrical metallic containers,” it should be appreciated that the current process may be used to decorate any variety or shape of containers or other articles of manufacture, including generally cylindrical surfaces and non-cylindrical surfaces (including flat substrates) whether made of metal or other materials.
References made herein to “lithographic printing” or aspects thereof should not necessarily be construed as limiting the present invention to a particular method or type of printing. It will be recognized by one skilled in the art that the present invention may be used in other printing processes such as offset printing, dry offset printing, gravure printing, intaglio printing, screen printing, and inkjet printing.
The phrases “photopolymer plates,” “soft photopolymer plates,” “soft photopolymer material,” and “soft photopolymer blankets” may be used interchangeably and refer to plates or blankets including a photopolymer material. Thus, the soft photopolymer plate may be a photopolymer printing plate that is a digital plate, a conventional analog plate, or a cylinder coated with a photopolymer. Additionally, or alternatively, the soft photopolymer plate may be round or a sleeve adapted to fit around a circumference of a blanket cylinder.
The term “a” or “an” entity, as used herein, refers to one or more of that entity. As such, the terms “a” (or “an”), “one or more,” and “at least one” can be used interchangeably herein.
The use of “including,” “comprising,” or “having” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Accordingly, the terms “including,” “comprising,” or “having” and variations thereof can be used interchangeably herein.
It shall be understood that the term “means” as used herein shall be given its broadest possible interpretation in accordance with 35 U.S.C., Section 112(f). Accordingly, a claim incorporating the term “means” shall cover all structures, materials, or acts set forth herein, and all of the equivalents thereof. Further, the structures, materials, or acts and the equivalents thereof shall include all those described in the summary of the invention, brief description of the drawings, detailed description, abstract, and claims themselves.
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the Summary of the Invention given above and the Detailed Description of the drawings given below, serve to explain the principles of these embodiments. In certain instances, details that are not necessary for an understanding of the disclosure or that render other details difficult to perceive may have been omitted. It should be understood, of course, that the invention is not necessarily limited to the particular embodiments illustrated herein. Additionally, it should be understood that the drawings are not necessarily to scale.
To assist in the understanding of one embodiment of the present invention the following list of components and associated numbering found in the drawings is provided herein:
The present invention has significant benefits across a broad spectrum of endeavors. It is the Applicant's intent that this specification and the claims appended hereto be accorded a breadth in keeping with the scope and spirit of the invention being disclosed despite what might appear to be limiting language imposed by the requirements of referring to the specific examples disclosed. To acquaint persons skilled in the pertinent arts most closely related to the present invention, a preferred embodiment that illustrates the best mode now contemplated for putting the invention into practice is described herein by, and with reference to, the annexed drawings that form a part of the specification. The exemplary embodiment is described in detail without attempting to describe all of the various forms and modifications in which the invention might be embodied. As such, the embodiments described herein are illustrative, and as will become apparent to those skilled in the arts, may be modified in numerous ways within the scope and spirit of the invention.
Although the following text sets forth a detailed description of numerous different embodiments, it should be understood that the detailed description is to be construed as exemplary only and does not describe every possible embodiment since describing every possible embodiment would be impractical, if not impossible. Numerous alternative embodiments could be implemented, using either current technology or technology developed after the filing date of this patent, which would still fall within the scope of the claims. To the extent that any term recited in the claims at the end of this patent is referred to in this patent in a manner consistent with a single meaning, that is done for sake of clarity only so as to not confuse the reader, and it is not intended that such claim term by limited, by implication or otherwise, to that single meaning.
Referring now to
Printing plates 2B may also be formed with a relief area 12, as illustrated in
After one or more of the ink receiving regions 8, non-ink regions 10, and/or relief areas 12 are formed on a printing plate 2, the plate 2 is attached to a plate cylinder of a decorator, discussed below in conjunction with
In one embodiment the soft photopolymer plates have a thickness of about 0.04 inch to about 0.1 inch. In one preferred embodiment, the thickness of the soft photopolymer plates is from about 0.060 inch to about 0.090 inch. In another preferred embodiment, the soft photopolymer plates are about 0.05 inch thick. In still another preferred embodiment, the soft photopolymer plates are about 0.0725 inch thick. Soft photopolymer plates of other suitable thicknesses may also be used with the present invention. In one embodiment, the soft photopolymer plates have a hardness of from about 40 durometers to about 110 durometers. In a preferred embodiment, the hardness of the soft photopolymer plates is from about 60 durometers to about 100 durometers. In another preferred embodiment, the hardness of the soft photopolymer plates is from about 50 durometers to about 90 durometers. However, soft photopolymer plates that are harder or softer may be used with the method of the present invention. In one embodiment, the hardness of the soft photopolymer plates is measured after the plates have been cured and an image formed thereon as described below. The soft photopolymer plate may be made of any photo-curable material, whether made of a polymer or not. One example is a UV-curable material. Another example is made of a material cured by light of a different wavelength, not necessarily UV light. Although many such plates are made of polymer compositions today, the current invention is applicable to plates made of any material and composition that are curable by light of a desired wavelength. In one embodiment, the photopolymer plate is comprised of elastomers which are cured using a light-catalyzed photopolymerization process. In another embodiment, the photopolymer plate is comprised of chloroprene cross-linked with trimethylolpropane triacrylate. In still another embodiment, the photopolymer plate is comprised of styrene-isoprene rubber with a polyacrylate. Still other embodiments may use soft photopolymer plates comprised of other suitable light-curable materials known to those skilled in the art or developed in the future.
Soft photopolymer plates have primarily been used for creating high resolution graphics on flexible plastic packaging (such as soft plastic vegetable and produce bags), tags, labels, folding cartons, and tissue wrappers. Soft photopolymer plates are not known to have been used in the metallic container industry due to the significant challenges of high speed printing on an exterior surface of a metallic substrate.
Referring now to
Images are formed on the soft photopolymer plates 14 with a computer to plate (CTP) process, a conventional plate exposure process, or any other suitable method. A piece of soft photopolymer plate 14 with a Mylar backing is generally used as a backing, although other materials commonly known by one skilled in the art may also be employed as a backing. An image 18 to be printed onto an exterior surface of the metallic container is formed.
In the conventional plate exposure process, a film negative of the image 18 is created. The film negative is placed on a predetermined portion of the face portion 4 of the soft photopolymer plate 14. The soft photopolymer plate 14 with the film negative is then placed into an exposure device that exposes the soft photopolymer plate and the film negative to a light source. The film negative acts as a negative mask that blocks and prevents some of the light from reaching the face portion 4 of the soft photopolymer plate 14. The light shines through the clear sections of the film negative and hardens the material of the soft photopolymer plate 14. Exposure time to an ultraviolet light source may range from approximately 0.01 minute to approximately 10 minutes.
The material on the face portion 4 of the soft photopolymer plate 14 hardens where light passes through the film negative and strikes the face portion 4. Portions of the soft photopolymer plate 14 that are not covered by the film negative are also exposed to the light and harden. The material on the face portion of the soft photopolymer plate 14 under the areas of the film negative that block the light, or some of the light, remain unexposed and soft.
Using the CTP process, the image 18 is transferred directed to the plate in a digital imager apparatus. The digital imager apparatus ablates, or otherwise removes, portions of an opaque mask coating on the face portion 4 of the soft photopolymer plate 14 to form a negative of the image 18. The soft photopolymer plate 14 is then placed into an exposure device that exposes the soft photopolymer plate to a light source. The exposure device may be the same as, or similar to, the exposure device used in the conventional plate exposure process described above. Portions of the mask coating that were not ablated block light and prevent the light from reaching the face portion 4 of the soft photopolymer plate 14. The polymer material of the soft photopolymer plate 14 under remaining portions of the mask coating remains unexposed and soft. Light from the exposure device contacts the polymer material of the soft photopolymer plate in the image areas where the mask coating has been removed and hardens the material of the soft photopolymer plate 14. Exposure time to an ultraviolet light source may range from approximately 0.01 minute to approximately 10 minutes. An example of the CTP process is described in “Advancing Flexography, The Technical Path Forward” by Ray Bodwell and Jan Scharfenberg, available at http://www2.dupont.com/Packaging_Graphics/en_US/assets/downloads/pdf/AdvFlexo_Brochure.pdf, which is herein incorporated by reference in its entirety. Examples of suitable digital imager apparatus are described in “Cyrel™ Digital flex plate Imagers (CDI),” available at http://www2.dupont.com/Packaging_Graphics/en_GB/assets/downloads/pdf/CDI_family_English.pdf, which is herein incorporated by reference in its entirety.
Once the image is transferred to the soft photopolymer plate 14 using either the CTP process or the conventional plate exposure process, the soft, unexposed polymer material on the face portion 4 of the exposed soft photopolymer plate 14 is removed. In one embodiment, the exposed soft photopolymer plate 14 is placed in a washing station. The unexposed, soft polymer material on unexposed areas of the face portion 4 of the soft photopolymer plate 14 is removed by washing and scrubbing the face portion 4. The washing station may include either water or a solvent, such as Cyrel Nutre-Clean. As will be appreciated, other solutions and solvents may be used in the washing station. In another embodiment, the unexposed polymer material is removed from the face portion by a post processing apparatus that does not use solvents and/or other liquids. The post processing apparatus may use thermal energy and a developer roll to remove the unexposed polymer material. After the soft, unexposed polymer material is removed, the soft photopolymer plate 14 may be exposed to light a second time to complete polymerization and ensure all areas of the plate have been hardened and to attain maximum durability.
When the unexposed soft material on areas of the face portion 4 of the soft photopolymer plate 14 have been removed, the face portion 4 will have relief areas 20 that will not receive ink and hardened areas forming images 18 that can receive ink. The image 18 formed on the soft photopolymer plate can be three dimensional and have different depths in the face portion 4 depending on the amount of light that passed through the film negative or the masking coating. The image 18, or portions of the image, have a depth of about 0.0009 inch to about 0.089 inch. In a more preferred embodiment, the depth of the image 18, or within portions of an image 18, is from approximately 0.001 inch to approximately 0.084 inch deep. In some embodiments, the soft photopolymer plates 14 may also be etched or engraved on the face portion 4 before, during, or after the curing process to form one or more additional recessed portions. The etched or engraved areas may be formed using a laser or any other means known by those of skill in the art.
The images 18 have a maximum thickness equal to the original thickness of the photopolymer plate 14. The images 18A, 18B can be surrounded by relief areas 20A, 20B that were not exposed and therefore remained soft. The unexposed, soft material of the soft photopolymer plates was subsequently removed to form the relief areas 20A, 20B. The size, location, and shape of the relief area formed in the soft photopolymer plates may align with the size, location, and shape of the non-ink region 10 illustrated in
After the image 18 has been formed on the face portion 4 of the soft photopolymer plate 14, an adhesive transfer tape or adhesive stickyback may be added to the Mylar portion or other backing on the back portion 6 of the soft photopolymer plate 14. Suitable adhesive stickyback is available from a variety of commercial suppliers. In one embodiment, the adhesive stickyback is about 2.0 mil (or about 0.002 inch) thick. In another embodiment, the adhesive stickyback is about 15 mil (or about 0.015 inch) thick. The soft photopolymer plate 14 with the stickyback on the back portion 6 is then attached to the blanket cylinder of the decorator.
Although not illustrated in
Referring now to
In the example illustrated in
The decorator 24 also includes a blanket cylinder 32 to which one or more soft photopolymer plates 14 are attached. Additionally, or alternatively, the one or more soft photopolymer plates 14 can be a sleeve or cylinder of a soft photopolymer material that wraps around the circumference of the blanket cylinder 32. The blanket cylinder 32 rotates in a second direction opposite to the first direction of the plate cylinder 26. Each soft photopolymer plate 14 may have a different image 18 formed thereon. For example, the soft photopolymer plates 14 illustrated in
The plate cylinders 26 rotate in the first direction and the blanket cylinder 32 rotates in the second opposite direction in unison to bring the printing plates 2 into contact with the soft photopolymer plates 14. Ink is transferred to the ink receiving regions 16 and images 18 of the soft photopolymer plates 14 that contact the inked ink receiving regions 8 of the printing plates 2. The main image exposure occurs on the inked printing plates 2 and a secondary image is produced by the soft photopolymer plates 14. The soft photopolymer plates 14 may have ink receiving regions 16 that are common for all of the soft photopolymer plates 14. The areas where images 18 are formed on the soft photopolymer plates, such as the images 18A, 18B illustrated in
In operation, a metallic container 34 is fed to a support cylinder 38 by a conveyor 36 or other means from a storage location or facility 42. The support cylinder 38 has a plurality of stations 40 adapted to receive and hold a metallic container 34 in a predetermined position aligned with the soft photopolymer plates 14. The stations 40 can hold the metallic containers 34 in a stationary position and can also rotate the metallic containers 34 about each container's longitudinal axis. As the blanket cylinder 32 rotates in the second direction, the support cylinder 38 rotates in unison in the first direction to bring an exterior surface 44 of the metallic container 34 into rotational contact with an inked soft photopolymer plate 14 attached to the blanket cylinder 32. The ink is then transferred from the soft photopolymer plate 14 to the exterior surface 42 of the metallic container 34. Although a support cylinder 38 is illustrated in
Two decorated metallic containers 34A, 34B are also illustrated in
Decorators 24 used in the commercial metallic container industry may have blanket cylinders 32 with from 8 to 12 individual soft photopolymer plates 14 attached. When each of the 8 to 12 individual soft photopolymer plates 14 has a unique image 18 formed thereon, the decorator 24 can produce from 8 to 12 different lithographic images without changing the printing plates 2. The present invention will work with a blanket cylinder 32 with any number of soft photopolymer plates 14 attached to its circumference. In addition, although the soft photopolymer plates 14 are illustrated in
Referring now to
Referring now to
Referring now to
The description of the present invention has been presented for purposes of illustration and description, but is not intended to be exhaustive or limiting of the invention to the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments described and shown in the figures were chosen and described in order to best explain the principles of the invention, the practical application, and to enable those of ordinary skill in the art to understand the invention.
While various embodiments of the present invention have been described in detail, it is apparent that modifications and alterations of those embodiments will occur to those skilled in the art. However, it is to be expressly understood that such modifications and alterations are within the scope and spirit of the present invention, as set forth in the following claims. Further, the invention(s) described herein is capable of other embodiments and of being practiced or of being carried out in various ways. In addition, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of “including,” “comprising,” or “having” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items.
This application is a divisional application of and claims priority to U.S. patent application Ser. No. 14/301,018, filed on Jun. 10, 2014 and entitled “Printing Process Using Soft Photopolymer Plates,” which claims priority under 35 U.S.C. § 119(e) to U.S. Provisional Patent Application Ser. No. 61/833,799 filed Jun. 11, 2013, which are each incorporated herein by reference in their entirety.
Number | Name | Date | Kind |
---|---|---|---|
3286302 | Doering | Nov 1966 | A |
3752073 | Lorber | Aug 1973 | A |
3766851 | Sirvet et al. | Oct 1973 | A |
3991673 | Coale et al. | Nov 1976 | A |
4142462 | Gilgore | Mar 1979 | A |
4384518 | Albin | May 1983 | A |
4395946 | Price | Aug 1983 | A |
4519310 | Shimizu et al. | May 1985 | A |
4884504 | Sillars | Dec 1989 | A |
4889560 | Jaeger et al. | Dec 1989 | A |
4898752 | Cavagna et al. | Feb 1990 | A |
4903599 | Kubler et al. | Feb 1990 | A |
5010814 | Shishikura | Apr 1991 | A |
5049432 | Ooms et al. | Sep 1991 | A |
5181471 | Sillars | Jan 1993 | A |
5213043 | Reimers et al. | May 1993 | A |
5282306 | Katsuhiro | Feb 1994 | A |
5339731 | Howard et al. | Aug 1994 | A |
5351617 | Williams et al. | Oct 1994 | A |
5353703 | Rieker | Oct 1994 | A |
5385092 | Lewis et al. | Jan 1995 | A |
5469787 | Turner et al. | Nov 1995 | A |
5502476 | Neal et al. | Mar 1996 | A |
5591255 | Small et al. | Jan 1997 | A |
5713288 | Frazzitta | Feb 1998 | A |
5806427 | Niemiro | Sep 1998 | A |
5908505 | Bargenquest et al. | Jun 1999 | A |
5919839 | Titterington et al. | Jul 1999 | A |
5970865 | Horth et al. | Oct 1999 | A |
5974974 | Agnew et al. | Nov 1999 | A |
6037101 | Telser et al. | Mar 2000 | A |
6058839 | Frazzitta | May 2000 | A |
6139779 | Small et al. | Oct 2000 | A |
6174937 | Banning et al. | Jan 2001 | B1 |
6196675 | Deily et al. | Mar 2001 | B1 |
6238837 | Fan | May 2001 | B1 |
6309453 | Banning et al. | Oct 2001 | B1 |
6312872 | Murphy | Nov 2001 | B1 |
6395123 | Fromson et al. | May 2002 | B1 |
6494950 | Fujita et al. | Dec 2002 | B1 |
6543350 | Gilliam et al. | Apr 2003 | B2 |
6550389 | Goto et al. | Apr 2003 | B1 |
6553907 | Richards | Apr 2003 | B2 |
6594927 | Witkowski | Jul 2003 | B2 |
6640713 | Landsman | Nov 2003 | B2 |
6651559 | Haraux et al. | Nov 2003 | B2 |
6779445 | Schaede | Aug 2004 | B2 |
6779455 | Figov et al. | Aug 2004 | B2 |
6899998 | Figov | May 2005 | B2 |
6920822 | Finan | Jul 2005 | B2 |
7309563 | Paul et al. | Dec 2007 | B2 |
7464642 | Schaede | Dec 2008 | B2 |
7691549 | Glasser | Apr 2010 | B1 |
7810922 | Gervasi et al. | Oct 2010 | B2 |
7997199 | Watanabe et al. | Aug 2011 | B2 |
8034207 | Hunahata | Oct 2011 | B2 |
8409698 | Byers et al. | Apr 2013 | B2 |
8544385 | Schuler-Cossette et al. | Oct 2013 | B2 |
9409433 | Carreras | Aug 2016 | B2 |
9475276 | Fleischer et al. | Oct 2016 | B2 |
9573358 | Boas | Feb 2017 | B2 |
20020083855 | Samworth | Jul 2002 | A1 |
20020178945 | Richards | Dec 2002 | A1 |
20030015105 | Dewig | Jan 2003 | A1 |
20030056410 | Witkowski | Mar 2003 | A1 |
20030089261 | Landsman | May 2003 | A1 |
20030101885 | Jordan | Jun 2003 | A1 |
20030150346 | Haraux et al. | Aug 2003 | A1 |
20040011234 | Figov et al. | Jan 2004 | A1 |
20040126682 | Dreher | Jul 2004 | A1 |
20040173110 | Roesch | Sep 2004 | A1 |
20040191693 | Takamiya | Sep 2004 | A1 |
20050098051 | Flint et al. | May 2005 | A1 |
20060019196 | Miyoshi | Jan 2006 | A1 |
20090303307 | Yasumatsu | Dec 2009 | A1 |
20100031834 | Morgavi et al. | Feb 2010 | A1 |
20100229737 | Ouchi | Sep 2010 | A1 |
20100295885 | LaCaze | Nov 2010 | A1 |
20100319555 | Hashimoto | Dec 2010 | A1 |
20110104615 | Sievers | May 2011 | A1 |
20110126760 | Daems et al. | Jun 2011 | A1 |
20110162542 | Nakamura et al. | Jul 2011 | A1 |
20110283905 | Sakata | Nov 2011 | A1 |
20120103216 | Knisel et al. | May 2012 | A1 |
20120204746 | Fullgraf | Aug 2012 | A1 |
20120238675 | Kataura et al. | Sep 2012 | A1 |
20120274695 | LaCaze et al. | Nov 2012 | A1 |
20120315412 | Clayton et al. | Dec 2012 | A1 |
20130075675 | Krutak et al. | Mar 2013 | A1 |
20130105743 | Owen et al. | May 2013 | A1 |
20130176358 | Yamada et al. | Jul 2013 | A1 |
20130228086 | Baldwin et al. | Sep 2013 | A1 |
20130231242 | Clayton et al. | Sep 2013 | A1 |
20130242276 | Schadebrodt et al. | Sep 2013 | A1 |
20130340885 | Clayton et al. | Dec 2013 | A1 |
20140039091 | Owen et al. | Feb 2014 | A1 |
20140072442 | Bowman et al. | Mar 2014 | A1 |
20140187668 | Owen et al. | Jul 2014 | A1 |
20140210201 | Owen et al. | Jul 2014 | A1 |
20140212654 | Clayton et al. | Jul 2014 | A1 |
20140272161 | Clayton et al. | Sep 2014 | A1 |
20150174891 | Boas et al. | Jun 2015 | A1 |
20150183211 | Petti et al. | Jul 2015 | A1 |
20150217559 | Carreras et al. | Aug 2015 | A1 |
20150290923 | Treloar | Oct 2015 | A1 |
20160001546 | Hughes et al. | Jan 2016 | A1 |
20160129687 | Boas et al. | May 2016 | A1 |
20170013452 | Boas et al. | Apr 2017 | A1 |
20170096001 | Carreras et al. | Apr 2017 | A1 |
Number | Date | Country |
---|---|---|
2097619 | May 1992 | CA |
101808825 | Aug 2010 | CN |
102143846 | Aug 2011 | CN |
103109233 | May 2013 | CN |
102006025897 | Jan 2007 | DE |
202928 | Nov 1986 | EP |
545862 | Jun 1993 | EP |
0717320 | Jun 1996 | EP |
968491 | Jan 2000 | EP |
1590177 | Nov 2005 | EP |
1684990 | Aug 2006 | EP |
2153991 | Feb 2010 | EP |
2196314 | Jun 2010 | EP |
2242595 | Oct 2010 | EP |
2317387 | May 2011 | EP |
2384890 | Nov 2011 | EP |
2701912 | Mar 2014 | EP |
2809521 | Dec 2014 | EP |
2943339 | Nov 2015 | EP |
1298205 | Nov 1972 | GB |
2512678 | Oct 2014 | GB |
2000-258899 | Sep 2000 | JP |
2001030612 | Feb 2001 | JP |
2007076209 | Mar 2007 | JP |
10-2006-0004679 | Jan 2006 | KR |
WO 199002044 | Mar 1990 | WO |
WO 9407693 | Apr 1994 | WO |
WO 9817474 | Apr 1998 | WO |
WO 9841966 | Sep 1998 | WO |
WO 0027644 | May 2000 | WO |
WO 2009090389 | Jul 2009 | WO |
WO 2013028804 | Feb 2013 | WO |
WO 2013115800 | Aug 2013 | WO |
WO 2013155423 | Oct 2013 | WO |
WO 2014006517 | Jan 2014 | WO |
WO 2014008544 | Jan 2014 | WO |
WO 2014096088 | Jun 2014 | WO |
WO 2014128200 | Aug 2014 | WO |
WO 2014144853 | Sep 2014 | WO |
WO 2015101828 | Jul 2015 | WO |
WO 2016183452 | Nov 2016 | WO |
Entry |
---|
Official Action for Australia Patent Application No. 2014278307, dated Mar. 3, 2017 4 pages. |
Official Action for Canada Application No. 2,914,050, dated Mar. 8, 2017 3 pages. |
Official Action (English translation) for Chinese Patent Application No. 201480039926.X, dated Oct. 28, 2016, 10 pages. |
Extended Search Report for European Patent Application No. 14810948.1, dated Apr. 11, 2017 10 pages. |
Third Party Observations for European Patent Application No. 14810948.1, dated Dec. 21, 2016 5 pages. |
Notice of Allowance with English Translation for Japan Patent Application No. 2016-519592, dated Jan. 11, 2017 2 pages. |
“Chemical milling,” Wikipedia, Feb. 13, 2015, retrieved from http://en.wikipedia.org/Wiki/Chemical_milling, 6 pages. |
“DuPont™ Cyrel®: CyrelTM Digital flex plate Imagers (CDI)” DuPont, 2009, retreived from http://www2.dupont.com/Packaging_Graphics/en_GB/assets/downloads/pdf/CDI_family_English.pdf, 8 pages. |
“DuPont™ Cyrel® DPR: Robust Digital Plate for Highest Quality Printing,” DuPont, 2010, retrieved from http://www2.dupont.com/Packaging_Graphics/en_US/assets/downloads/pdf/DP_Cyrel_DS_DPR_us_low.pdf, 2 pages. |
“DuPont™ Cyrel® NOWS: Rugged, High-Performance Analog Plate,” DuPont, 2007, retreived from http://www2.dupont.com/Packaging_Graphics/en_US/assets/downloads/pdf/Cyrel_NOWS.pdf, 2 pages. |
“EPDM rubber,” Wikipedia, Oct. 24, 2014, retrieved from http://enwikipedia.org/wiki/EPDM_rubber, 3 pages. |
“Flexographic ink,” Wikipedia, Sep. 18, 2014, retrieved from http://en.wikipedia.org/wiki/Flexographic_ink, 2 pages. |
“Flexography,” Wikipedia, Dec. 15, 2014, retrieved from http://en.wikipedia.org/wiki/Flexographic, 6 pages. |
“Laser engraving,” Wikipedia, Jan. 16, 2015, retrieved from http://en.wikipedia.org/wiki/Laser_engraving, 10 pages. |
“Luminous paint,”Wikipedia, Jul. 7, 2014, retrieved from http://en.wikipedia.org/wiki/Luminous_paint, 4 pages. |
“Offset Lithography,” PrintWiki, retrieved Feb. 9, 2015 from http://printwiki.org/Offset_Lithography, 8 pages. |
“Offset printing,” Wikipedia, Dec. 11, 2014, retrieved from http://en.wikipedia.org/wiki/Offset_Printing, 12 pages. |
“Plate,” PrintWiki, retrieved Feb. 9, 2015 from http://printwiki.org/Plate, 6 pages. |
“Printmaking,” Wikipedia, Feb. 12, 2015, retrieved from http://en.wikipedia.org/wiki/Printmaking, 14 pages. |
Bodwell et al., “Advancing Flexography: The Technical Path Forward,” DuPont, 2011, retrieved from www2.dupont.com/Packaging_Graphics/en_US/assets/downloads/pdf/AdvFlexo_Brochure.pdf, 12 pages. |
Mine, “How Offset Printing Works,” retrieved on Feb. 9, 2015 from www.howstuffworks.com/offset-printing.htm/printable, 5 pages. |
International Search Report and Written Opinion for International Patent Application No. PCT/US14/41713, dated Oct. 10, 2014, 8 pages. |
International Preliminary Report on Patentability for International (PCT) Patent Application No. PCT/US2014/041713, dated Dec. 23, 2015 7 pages. |
Official Action for U.S. Appl. No. 14/301,018, dated May 13, 2015, 5 pages. |
Official Action for U.S. Appl. No. 14/301,018, dated Aug. 14, 2015 10 pages. |
Official Action for U.S. Appl. No. 14/301,018, dated Dec. 15, 2015 8 pages. |
Notice of Allowance for U.S. Appl. No. 14/301,018, dated Apr. 6, 2016 10 pages. |
Official Action for U.S. Appl. No. 14/686,517, dated Oct. 15, 2015 5 pages Restriction Requirement. |
Official Action for U.S. Appl. No. 14/686,517, dated Jan. 15, 2016 8 pages. |
Official Action for U.S. Appl. No. 14/005,873, dated Aug. 26, 2015, 27 pages. |
Official Action for Canada Patent Application No. 2,914,050, dated Jul. 7, 2016 3 pages. |
Official Action (with English translation) for Panama Patent Application No. 90961, dated May 12, 2016, 8 pages. |
International Search Report and Written Opinion for International (PCT) Patent Application No. PCT/US16/27576, dated Jul. 22, 2016 8 pages. |
Official Action for U.S. Appl. No. 14/686,517, dated Jul. 6, 2016 9 pages. |
Notice of Allowance for U.S. Appl. No. 14/686,517, dated Sep. 13, 2016 9 pages. |
Corrected Notice of Allowance for U.S. Appl. No. 14/686,517, dated Sep. 28, 2016 6 pages. |
Notice of Acceptance for Australia Patent Application No. 2014278307, dated Sep. 13, 2017 3 pages. |
English Translation of Official Action for Colombia Patent Application No. 15-304586, dated Aug. 23, 2017 6 pages. |
Notice of Allowance for Mexico Patent Application No. MX/a/2015/016969, dated Aug. 17, 2017 2 pages. |
English Translation of Official Action for China Patent Application No. 2017061601514530, dated Jun. 21, 2017 9 pages. |
Official Action for Russia Patent Application No. 2015156266, dated May 31, 2017 4 pages. |
Decision to Grant for Russia Patent Application No. 2015156266, dated Jun. 8, 2017 12 pages. |
English Translation of Official Action for China Patent Application No. 201480039926.X, dated Jan. 2, 2018 6 pages. |
Notice of Allowance with English Translation for Japan Patent Application No. 2017-023060, dated Nov. 14, 2017 2 pages. |
International Preliminary Report on Patentability for International (PCT) Patent Application No. PCT/US2016/027576, dated Oct. 26, 2017 19 pages. |
Notice of Grant with machine translation for Chile Patent Application No. 3604-2015, dated Jan. 22, 2018 4 pages. |
Third Party Observations for European Patent Application No. 14810948.1, dated Jan. 29, 2018 5 pages. |
Number | Date | Country | |
---|---|---|---|
20160347048 A1 | Dec 2016 | US |
Number | Date | Country | |
---|---|---|---|
61833799 | Jun 2013 | US |
Number | Date | Country | |
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Parent | 14301018 | Jun 2014 | US |
Child | 15231128 | US |