Patent Application
20120169804
The present invention relates to a printer apparatus in which printing is performed on a printing medium by ejecting ink from a printer head. More specifically, the present invention relates to a printer apparatus which is capable of performing printing on a sheet-like printing medium and a plate-like printing medium, and a roller assembly which is used in the printer apparatus.
A printer apparatus (inkjet printer) has been conventionally known in which printing is performed on a printing medium formed in a sheet-like shape (hereinafter, referred to as a sheet-like medium) by executing control for feeding the printing medium in the front and rear direction with respect to a platen and control for ejecting ink while moving a printer head facing the platen in the right and left direction in a combined manner.
In recent years, it is required that printing is performed on a printing medium formed in a plate-like shape (hereinafter, referred to as a plate-like medium) in addition to a sheet-like medium by using the printer apparatus. In order to attain this requirement, a structure has been known in which, for example, support members for horizontally supporting a plate-like medium are provided on the front and rear sides of the platen. According to this structure, a plate-like medium is capable of being fed in the front and rear direction while being supported horizontally and printing is performed on the plate-like medium.
For example, in FIG. 3 in Patent Literature 1, a structure is disclosed in which a first support arm 101 and a second support arm 103 are provided on the front and rear sides of a platen 10 to horizontally support a plate-like medium 20 and the plate-like medium 20 is moved in the front and rear direction by rotating a feed roller 15. In the structure shown in FIG. 3 in Patent Literature 1, a plate-like medium 20 is moved in the front and rear direction while the under face of the plate-like medium 20 is slid on the upper face of the platen 10 by rotating the feed roller 15.
In the printer apparatus, it is important that a printing medium which is pinched between a feed roller and a pinch roller is fed with an accurate feeding amount which is proportional to a rotation angle of the feed roller for securing printing quality. Therefore, in order to prevent a printing medium from partially slipping on the feed roller, a number of roller assemblies respectively having a rotatable pinch roller is provided above the feed roller with a predetermined interval in the right and left direction.
Some of the roller assemblies are structured so that a clamp state for a printing medium can be changed. For example, a roller assembly has been known which includes a clamp pressure setting mechanism by which a pressing force (referred to as a clamp pressure) of a pinch roller that is pressed against the feed roller is capable of being changed and set depending on material, thickness and the like of a printing medium.
In recent years, it is desired that printing is performed on a large-scale plate-like medium (for example, a width in the right and left direction is about 1 m and a length in the front and rear direction is about 1.6 m).
However, in the conventional device as described above, whenever a clamp state is to be changed depending on a type of a medium, an operator is required to perform a switching operation of a corresponding lever.
Further, in a multi-function apparatus which is capable of finely adjusting and setting of a clamp state depending on material, shape, size, thickness, a printing range and the like of a printing medium, a clamp engage and disengage mechanism, a clamp pressure setting mechanism and the like are independently provided in each of roller assemblies and a clamp pressure is capable of being set at a plurality of levels (for example, three levels of strong, medium and weak). Therefore, in a case that sheet-like media whose material, shape, dimension and the like are different from each other are to be worked, lever operations are respectively required in which a clamp lever and a clamp pressure setting lever are adjusted for each of a number of roller assemblies for each of objects to be worked. As a result, a setting operation is complicated even though a multifunctional property capable of performing a fine adjustment is provided.
In view of the problem described above, an objective of the present invention is to provide a printer apparatus and a roller assembly which are capable of suitably clamping a printing medium of various types of material/thickness, for example, a sheet-like medium and a plate-like medium, with a simple structure, and are capable of feeding the printing medium accurately.
The printer apparatus described in claim 1 of the present invention is; a printer apparatus in which printing is performed on a printing medium by ejecting ink while a printer head is relatively moved in a feeding direction and a scanning direction perpendicular to each other in a faced state with respect to the printing medium supported by a medium support means for supporting the printing medium, comprising: a feeding mechanism which includes a feed roller that is extended in a right and left direction at a height position substantially the same as an upper face of the medium support means and is rotationally driven, and a plurality of roller assemblies in which rotatable pinch rollers are juxtaposedly disposed in the right and left direction on an upper side of the feed roller, and the feeding mechanism pinching the printing medium placed on the medium support means between the feed roller and the pinch rollers to feed the printing medium in a front and rear direction; a head moving mechanism for moving the printer head in the scanning direction; and a print control section for executing feed control of the printing medium by the medium feeding mechanism and movement control of the printer head by the head moving mechanism; wherein the roller assembly is structured of an assembly main body and a roller member which includes the pinch roller and is attachable/detachable with respect to the assembly main body; and wherein a clamp state can be changed by exchanging the roller member depending on material and/or thickness of the printing medium.
The printer apparatus described in claim 2 of the present invention is; the printer apparatus according to claim 1, wherein, in a case that the printing medium is a sheet-like medium, the roller member includes one pinch roller having a relatively large diameter.
The printer apparatus described in claim 3 of the present invention is; the printer apparatus according to claim 1, wherein, in a case that the printing medium is a plate-like medium, the roller member includes a plurality of the pinch rollers having a relatively small diameter and disposed in a separated manner in the right and left direction.
A roller assembly described in claim 4 of the present invention is; a roller assembly used in a printer apparatus in which printing is performed on a printing medium by ejecting ink while a printer head is relatively moved in a feeding direction and a scanning direction perpendicular to each other in a faced state with respect to the printing medium supported by a medium support means for supporting the printing medium, comprising: an assembly main body; and a roller member which includes a rotatable pinch roller and is attachable/detachable with respect to the assembly main body; wherein a clamp state can be changed by exchanging the roller member depending on material and/or thickness of the printing medium.
The roller assembly described in claim 5 of the present invention is; the roller assembly according to claim 4, wherein, in a case that the printing medium is a sheet-like medium, the roller member includes one pinch roller having a relatively large diameter.
The roller assembly described in claim 6 of the present invention is; the roller assembly according to claim 4, wherein, in a case that the printing medium is a plate-like medium, the roller member includes a plurality of the pinch rollers having a relatively small diameter and disposed in a separated manner in the right and left direction.
In the printer apparatus and the roller assembly in accordance with the present invention, the roller member is exchanged depending on material and/or thickness of a printing medium to change a clamp state. Therefore, a printing medium of various types of material/thickness can be suitably clamped with a simple structure. Accordingly, in the present invention, a printer apparatus and a roller assembly are provided which are capable of accurately feeding depending on a printing medium of various types of material/thickness, for example, a sheet-like medium and a plate-like medium.
a) and 12(b) are explanatory views for explaining a structure and an operation of a clamp engage and disengage mechanism which is provided in the roller assembly.
a) and 13(b) are explanatory views for explaining a structure and an operation of a clamp pressure setting mechanism which is provided in the roller assembly.
A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. In the following description, directions in the drawings indicated by the arrows are respectively defined as front and rear, right and left, and upper and lower for convenience of description.
The printer apparatus in accordance with the present invention is a printer apparatus in which printing is performed on a printing medium by ejecting ink while a printer head is relatively moved in a feeding direction and a scanning direction perpendicular to each other in a faced state with respect to the printing medium supported by a medium support means for supporting a printing medium.
The printer apparatus includes a feeding mechanism, which is provided with a feed roller provided so as to be rotationally driven and extend in the right and left direction at a height position substantially the same as an upper face of a medium support means and a plurality of roller assemblies in which rotatable pinch rollers are provided side by side in the right and left direction above the feed roller for feeding a printing medium placed on the medium support means in the front and rear direction in a state that the printing medium is pinched between the feed roller and the pinch rollers, a head moving mechanism for moving the printer head in the scanning direction, and a print control section which executes feed control of a printing medium by using the medium feeding mechanism and movement control of the printer head by using the head moving mechanism.
The printer apparatus in accordance with the present invention is characterized in that the roller assembly is structured of an assembly main body and a roller member which includes the pinch roller and is capable of attaching/detaching to/from the assembly main body, and a clamp state is capable of being changed by exchanging the roller member depending on material and/or thickness of the printing medium. According to the printer apparatus in accordance with the present invention, a clamp state can be changed by exchanging the roller member in the roller assembly depending on material and/or thickness of the printing medium. Therefore, printing media having various types of material/thickness are suitably clamped with a simple structure. Accordingly, the printer apparatus in accordance with the present invention is capable of accurately feeding printing media having various types of material/thickness, for example, a sheet-like medium and a plate-like medium.
A structure of a printer apparatus 10 to which the present invention is applied will be described below with reference to
The printer apparatus 10 is, as shown in
A controller 19 is incorporated into a left end part of the center body part 12. The controller 19 outputs an operation signal to respective structure parts described below of the printer apparatus 10 to execute drive and control of the respective structure parts. Specifically, the controller 19 executes drive and control of a vertically moving mechanism (not shown) described below, a front and rear drive motor 25, printer heads 32, a right ultraviolet irradiation device 33R, a left ultraviolet irradiation device 33L, a right and left drive motor 39 and the like. A guide rail 17 extended in the right and left direction is provided on a front face side of a lower part of the upper body part 16. A printing unit 30 is attached to the guide rail 17 so as to be movable in the right and left direction.
A printing unit 30 is, as shown in
In order to move the printing unit 30 in a reciprocated manner along the guide rail 17 in the right and left direction, a mechanism may be used in which, for example, a right and left carrying belt (not shown) arranged in the inside of the upper body part 16 so as to be extended in the right and left direction and the carriage 31 are connected with each other and the right and left carrying belt is driven by the right and left drive motor 39 provided in the right body part 15 (see
The printer heads 32 are, for example, structured of a Magenta head, a Yellow head, a Cyan head and a Black head. A plurality of ejection nozzles (not shown) for ejecting “UV” ink toward a lower side is formed on an under face of each of the printer heads 32. The right ultraviolet irradiation device 33R is adjacently mounted on the right side of the printer heads 32. The right ultraviolet irradiation device 33R is mounted in its inside with a light source such as an LED which irradiates ultraviolet rays so that the ultraviolet rays are irradiated from the light source toward the lower side. The left ultraviolet irradiation device 33L is provided with the same structure as the right ultraviolet irradiation device 33R and is adjacently mounted on the left side of the printer heads 32. The “UV” ink ejected from the printer head 32 and stuck to a printing medium is surely cured by the ultraviolet rays irradiated from the right ultraviolet irradiation device 33R and the left ultraviolet irradiation device 33L.
As shown in
The roller assembly 100 is capable of setting at a clamp position where the pinch roller 131 is pressed against the feed roller 21 and at an unclamp position where the pinch roller 131 is separated from the feed roller 21. According to this structure, in a state that the clamp device 23 is set at the clamp position so that a printing medium is pinched between the pinch roller 131 and the feed roller 21, when the feed roller 21 is rotated, the printing medium is fed to the front side or the rear side by a predetermined distance.
An abutting portion of a surface of the feed roller 21 with the pinch roller 131 is, for example, stuck and fixed with a metal mesh member 22. According to this structure, a contact resistance of the feed roller 21 with the printing medium is increased and thus the printing medium can be fed to the front side and the rear side with a high degree of accuracy without generating a slip.
Especially, in the printer apparatus 10 in accordance with the present invention, a clamp state is changed by exchanging the roller member 130 of the roller assembly 100 depending on, for example, material and/or thickness of a printing medium such as a sheet-like medium or a plate-like medium. As a result, printing media having various types of material/thickness such as a sheet-like medium and a plate-like medium are suitably clamped with a simple structure and are fed accurately.
A specific structure of the roller assembly 100 in the printer apparatus in accordance with the present invention will be described in detail below.
Further, a plurality of suction holes 13A is formed in the platen 13 and a decompression chamber (not shown) which is in communication with the suction holes 13A is provided on an under face of the platen 13. When printing is to be performed, for example, on a sheet-like medium “S”, the sheet-like medium “S” is sucked and fixed to the upper face of the platen 13 by setting the decompression chamber in a negative pressure.
In the structure described above, when printing is to be performed on a sheet-like medium “S”, in a state that the sheet-like medium “S” is sucked and fixed to the platen 13, “UV” ink is ejected and ultraviolet rays are irradiated while the printing unit 30 is moved in the right and left direction to perform printing. Then, suction of the sheet-like medium “S” to the platen 13 is released and, after the sheet-like medium “S” is fed by a predetermined distance to the front side, the sheet-like medium “S” is fixed to the platen 13 again and ejection of the “UV” ink and irradiation of the ultraviolet rays are performed. The operation is repeatedly performed to complete desired printing on the sheet-like medium “S”.
In addition to the structure described above, in the printer apparatus 10, especially when printing is to be performing on a plate-like medium “B”, a plurality of feeding auxiliary members 40 is provided in the platen 13 for feeding the plate-like medium “B” in the front and rear direction with a high degree of accuracy.
Further, when printing is to be performed on a plate-like medium “B” by using the printer apparatus 10 structured as described above, a rear side support base 60 is attached on the rear side of the printer apparatus 10 and a front side support base 70 is attached on the front side for supporting the plate-like medium “B” in a substantially horizontal state (see
As shown in
For example, the feeding rail 61 may be fixed in a substantially horizontal state as shown in
When the rear side support base 60 is not used, the rear side support base 60 can be stored in a compact folded state and thus saving of a storage space can be attained.
(Roller Assembly) Next, a specific structure of the roller assembly 100 in accordance with the present invention will be described below which is used in the printer apparatus 10 structured as described above.
The roller assembly is structured of an assembly case 110 which is a frame of the assembly, a clamp base 120 which is swingably supported in an upper and lower direction through a swing shaft 114 extending in the right and left direction at a lower part of the assembly case 110, a roller member 130A (130) which is attached to a front end part of the clamp base 120 and includes a rotatable pinch roller 131A (131), a pair of right and left coil springs 140 whose one end is engaged with a spring support shaft 123 on the clamp base side and the other end side is engaged with a spring support shaft 163 on the assembly case side so that the clamp base 120 supported by the swing shaft 114 is urged in a clockwise direction in
A front portion of the assembly case 110 is, as shown in
The roller member 130 having the pinch roller 131 is provided at a tip end part of the base plate part 121 in an attachable/detachable manner.
Especially, in the present invention, the roller member 130 is selectively used depending on printing media having various types of material/thickness, in this embodiment, depending on a case that a printing medium is a sheet-like medium and a printing medium is a plate-like medium. As a result, suitable clamping can be performed depending on a printing medium and the printing medium is fed accurately.
In a case that the printing medium is a sheet-like medium, the roller member 130A is provided with one pinch roller 131A having a relatively large diameter. The roller member 130A pivotally supports the pinch roller 131A so as to be rotatable by a roller pin 132.
When a recessed part 133 for attaching which is provided in the roller member 130A is fitted to a fixed shaft 126 of the clamp base 120, the roller member 130A is attached to a tip end part of the clamp base 120 without rattling.
In this case, for easily understood, the roller member 130 is described so as to be attached to the clamp base 120 separately. However, actually, the roller member 130 is attached to the clamp base 120 in a state that the clamp base 120 (structures an assembly main body) is supported by the assembly case 110.
In a case that a printing medium is a sheet-like medium (roll medium), the medium is fed at a high speed to perform printing and thus bearing at the time of feeding, in other words, stable feeding of a printing medium is more important than that a medium is firmly pressed like a plate-like medium described below.
When a printing medium is a sheet-like medium, the roller member 130A is provided with only one pinch roller 131A. Therefore, friction between the pinch roller 131A and a printing medium is small and the printing medium is fed stably.
Further, when a printing medium is a sheet-like medium, a thickness of the medium is thin and thus a diameter of the pinch roller 131A is relatively large according to the thickness of the medium in comparison with a plate-like medium (pinch roller 131 B).
In a case that the printing medium is a plate-like medium, the roller member 130B is provided with a plurality of pinch rollers 131B having a relatively small diameter which are disposed in a separated manner in the right and left direction. The roller member 130B pivotally supports the pinch roller 131B so as to be rotatable by the roller pin 132.
When a recessed part 133 for attaching which is provided in the roller member 130B is fitted to the fixed shaft 126 of the clamp base 120, the roller member 130B is attached to the tip end part of the clamp base 120 without rattling.
When a printing medium is a plate-like medium, the medium is not required to be fed at a high speed as in a case of a sheet-like medium (roll medium) and thus it is more important that a medium is firmly pressed than bearing at the time of feeding.
When a printing medium is a plate-like medium, since the roller member 130B is provided with a plurality of the pinch rollers 131B disposed in a separated manner, a pressing width is wide and thus the medium is pressed firmly. In this embodiment, the roller member 130B is provided with two pinch rollers 131B. However, the present invention is not limited to this embodiment and the roller member 130B may be, for example, provided with three or more pinch rollers.
When a printing medium is a plate-like medium, a thickness of the medium is thick and thus a diameter of the pinch roller 131B is relatively small according to the thickness of the medium in comparison with a case of a sheet-like medium (pinch roller 131A).
As described above, in the present invention, the roller members whose number of the pinch rollers/type of the pinch roller/clamping height (pinch roller diameter) is different from each other are selectively used depending on printing media having various types of material/thickness, i.e., in this embodiment, depending on a case that a printing medium is a sheet-like medium and a case that a printing medium is a plate-like medium. Therefore, clamping can be suitably performed corresponding to various types of printing medium with a simple structure and the printing medium can be fed accurately.
Further, in the roller assembly described above, right and left side walls of the assembly case 110 are formed with a support shaft insertion hole 113 through which the spring support shaft 123 is passed so as to be opened in accordance with a swing locus of the spring support shaft 123, and right and left end parts of the spring support shaft 123 are protruded to outer sides from the assembly case 110. An E-ring is fitted to the right and left end parts of the spring support shaft 123 so that the coil spring 140 engaged with the spring support shaft 123 is not easily disengaged.
The other end side of the coil spring 140 is engaged with the spring support shaft 163 which is inserted to a cam slider 168 of the clamp pressure setting mechanism 160. Therefore, the spring support shaft 123 is pulled by a spring force (tension) corresponding to a distance between the shafts, i.e., between the spring support shaft 123 on a clamp base side and the spring support shaft 163 on the assembly case side. As a result, the clamp base 120 supported by the swingable shaft 114 is urged in the clockwise direction in
The clamp engage and disengage mechanism 150 is a clamp state setting mechanism which is capable of switching the clamp base 120 disposed so as to be urged as described above at a clamp position (clamp “ON”) where the pinch roller 131 is pressed against the feed roller 21 to feed a printing medium and at a released position (clamp “OFF”) where the pinch roller 131 is separated from the feed roller 21 to an upper side to release clamping of the printing medium.
In order to describe the structure and operation of the clamp engage and disengage mechanism 150,
The clamp engage and disengage mechanism 150 is mainly structured of a lever engagement part 122 of the clamp base 120 and the clamp lever 155.
The clamp lever 155 is formed in a plate-like shape extending in the front and rear direction so that the lever shaft 115 is located on its center side and the clamp lever 155 is pivotally supported by the assembly case so as to be swingable in the right and left direction with the lever shaft 115 as a swing center. A front end side of the clamp lever 155 extending to a front side from the lever shaft 115 is located on an upper side of the pinch roller 131 and is disposed so as to protrude to the front side of the assembly case 110 and the lever part 156 is formed so that a fingering operation can be performed. A rear end side of the clamp lever 155 is formed in a cam shape (“Y”-shaped cam in the embodiment shown in the drawing), in other words, an “OFF” engagement face 157f whose radius dimension from the lever shaft 115 is large is formed on the right side and an “ON” engagement face 157n whose radius dimension from the lever shaft 115 is small is formed on the left side.
When the clamp lever 155 is set at the “OFF” position on the right side, the “OFF” engagement face 157f is engaged with the lever engagement part 122 of the clamp base 120 to press the lever engagement part 122 to the rear side against an urging force of the coil spring 140 and the pinch roller 131 at the front end of the clamp base is held at the released position (clamp “OFF”) where the pinch roller 131 is separated above the feed roller 21.
When the clamp lever 155 is set at the “ON” position on the left side, the “ON” engagement face 157n (and a left end corner part 157p of the “OFF” engagement face 157f) is capable of engaging with the lever engagement part 122 and the pinch roller 131 is held at the clamp position (clamp “ON”) where the pinch roller 131 is pressed against a peripheral face (upper face) of the feed roller 21 by the urging force of the coil spring 140.
The clamp pressure setting mechanism 160 is a setting mechanism in the clamp state in which a pressing force of the pinch roller 131 is changed and set at the clamp position where the pinch roller 131 is pressed against the feed roller 21 so that a printing medium is sandwiched therebetween.
In order to describe the structure and operation of the clamp pressure setting mechanism 160,
The clamp pressure setting lever 165 is formed in a rhombus shape in a plan view which is widened to the front side in a fan shape from the lever shaft 115 and then is narrowed in a taper shape. The clamp pressure setting lever 165 is located on an upper side of the clamp lever 155 of the clamp engage and disengage mechanism and is pivotally supported so as to be swingable in the right and left direction with the lever shaft 115 as a swing center. A front end side of the clamp pressure setting lever 165 is disposed so as to protrude to the front side of the assembly case 110 and a lever part 166 is formed so that a fingering operation can be performed. A base end side of the clamp pressure setting lever 165 is formed in a stepped shape which is thicker than the lever part 166 and a cam face 167 in a waveform in a plan view is formed on an erected face of the stepped part. The cam face 167 is formed with three engaging recessed parts for engaging with an engagement protruded part 169 of a tip end of the cam slider 168 to lock the cam slider 168. The three engaging recessed parts are, from the right side, a weak engagement recessed part 167w whose radius dimension from the lever shaft 115 is small, a medium engaging recessed part 167m whose radius dimension is medium, and a strong engagement recessed part 167s whose radius dimension is large.
The cam slider 168 which is engaged with the cam face 167 is provided with a body part 168a formed in a rectangular shape in a cross-sectional view which is longer in the front and rear direction, and a support part 168b which is protruded from the body part 168a in the right and left direction and is supported between an upper face of the clamp pressure setting lever and the assembly case 110. The spring support shaft 163 is inserted into a support shaft hole penetrating through the body part 168a in the right and left direction (see
Therefore, when the clamp pressure setting lever 165 is swung in the right and left direction against the spring force of the coil spring 140, the engaging protruded part 169 engaged with the cam face 167 of the clamp pressure setting lever is slid and moved on the cam face in the front and rear direction. Accordingly, the clamp pressure setting lever 165 is locked and held at an angular position where the clamp pressure setting lever 165 is engaged with either of three engaging recessed parts 167w, 167m and 167s formed on the cam face 167.
The radius dimensions of the three engaging recessed parts 167w, 167m and 167s from the lever shaft 115 are different from each other as described above, and their dimensions in the radial direction are set to be as the weak engagement recessed part 167w<the medium engaging recessed part 167 m<the strong engagement recessed part 167s. Therefore, when the engaging protruded part 169 is engaged with and held by each of the engaging recessed parts, the position of the spring support shaft 163 is varied in the front and rear direction and thus a setting length “d” of the coil spring 140 stretched over the spring support shafts 123 and 163 is varied. In other words, in a case that a setting length is set to be “dw” when the clamp pressure setting lever 165 is swung to the left side and the engaging protruded part 169 is engaged with and held by the weak engagement recessed part 167w, the setting length is set to be “dm” when the clamp pressure setting lever 165 is located at the center position and the engaging protruded part 169 is engaged with and held by the medium engaging recessed part 167m, and the setting length is set to be “ds” when the swing clamp pressure setting lever 165 is swung to the right side and the engaging protruded part 169 is engaged with and held by the strong engagement recessed part 167s, the relationship is set as “dw<dm<ds”. As a result, a spring force corresponding to the setting length, in other words, a pressing force (clamp pressure) by which the pinch roller 131 is pressed against the feed roller 21 is varied in three levels of “weak”, “medium” and “strong” depending on the setting length.
As described above, in the clamp pressure setting mechanism 160, the clamp pressure setting lever 165 is swung in the right and left direction so that the engaging protruded part 169 is engaged with and held by either of the engaging recessed parts 167w, 167m and 167s and thus, the clamp pressure can be varied and set in three levels of “weak”, “medium” and “strong”.
As described above, in the printer apparatus and the roller assembly in accordance with the present invention, the roller members whose number of the pinch rollers/type of the pinch roller/clamp height (pinch roller diameter) is different from each other are selectively used depending on printing media having various types of material/thickness, i.e., in accordance with an embodiment of the present invention, depending on a case that a printing medium is a sheet-like medium and a case that a printing medium is a plate-like medium. Therefore, according to the present invention, clamping can be suitably performed corresponding to various types of printing medium with a simple structure and the printing medium can be fed accurately.
Although the present invention has been shown and described with reference to a specific embodiment, the technical scope of the present invention is not limited to the embodiment described above.
For example, in the embodiment described above, printing is performed by using “UV” ink. However, the present invention may be also applied to a printer apparatus in which, for example, water-based ink, oil-based ink, solvent ink or the like is used.
Further, in the embodiment described above, different roller members are used for a sheet-like printing medium and for a plate-like printing medium. However, the present invention is not limited to this embodiment. Different roller members may be used for a sheet-like printing medium depending on its material/thickness. Further, different roller members may be used for a plate-like printing medium depending on its material/thickness.
The present invention may be widely applied to a printer apparatus in which printing is performed on a printing medium by ejecting ink from a printer head.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2009-210359 | Sep 2009 | JP | national |
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/JP2010/005502 | 9/8/2010 | WO | 00 | 3/9/2012 |
