Patent Grant
7963733
Not Applicable.
In recent years, print on demand (POD) book printing, binding and trimming systems (POD book publishing systems) have been developed, such as shown in my U.S. Pat. No. 7,014,182. This last-mentioned patent used one or more conventional black and white duplex laser printers for printing the text pages that constituted the book block of the POD book. A color cover for such POD books was also conventionally printed by a cover printer was married to the book block to form a perfect bound book. In recent years, advances have been made in color printers such that those skilled in the art will recognize that such modern color printers can economically used to print the text pages of a POD either in black and white, or in color.
While such print on demand book printing, binding and trimming apparatus, as described in my above-noted U.S. Pat. No. 7,014,182, worked well, it was found that certain problems arose in adhesively binding the cover to the spine of the book block. The amount of the adhesive applied to the spine of the book block was the same for thin book blocks and for thick book blocks. On thinner book blocks, excess adhesive was oftentimes applied to the spine such that when the cover was bound to the spine, such excess adhesive was forced from between the spine and the inside of the cover in contact with the spine and this excess adhesive flowed onto the face of the book block proximate the spine and onto the inside faces of the cover proximate the spine. While some such excess adhesive may be desirable because it held the cover in a flat condition against the outer pages of the book block, if too much adhesive was present between the cover and the face of the book block proximate the spine, this excess adhesive would form a ridge in the cover giving the book a pronounced “widow mark” (i.e., an indentation and a corresponding ridge formed on the cover along the spine) when the binding clamp gripped the cover and the book block adjacent the spine. While such books were still usable, they gave the book an appearance deficiency and made it difficult for the book to remain in an open position. Still further, such excess adhesive may form a pronounced ridge that cause the cover to bulge adjacent the spine and this may result in a book perceived to be of inferior quality.
As shown in FIGS. 1 and 2 of my above-noted U.S. Pat. No. 7,014,182, an adhesive application station AS was provided along the workpath WP. The adhesive application station had a rotary adhesive application wheel or drum that was at least partially immersed in a bath of hot melt adhesive that was heated to a desired application temperature (e.g., about 350-400° F., depending on the characteristics of the particular adhesive being used) sufficient to liquefy the hot melt adhesive. The wheel was rotatably driven about a horizontal axis generally perpendicular to the direction of relative movement between the book block and the wheel. As the wheel rotated up out of the bath of the liquefied adhesive, the peripheral edge of the wheel picked up a quantity of the adhesive thereon. The bottom edge of the spine was positioned so as to have an operatively relationship with the upper peripheral surface of the wheel (i.e., to be clear of the wheel but to be in contact with the layer of adhesive on the wheel) as the book block moved relative to the wheel so that a coating of the adhesive was applied across the width of the spine and along the length of the spine. However, the amount of adhesive carried by the wheel and applied to the spine could not be controlled and thus the same amount (thickness) of adhesive was applied to the spine, regardless of the thickness (width) of the spine. Counterintuitively, this has been found to result in excess adhesive being applied to thicker book blocks and insufficient adhesive applied to thinner book blocks.
Apparatus for binding a perfect bound book is disclosed where the book has a book block and a cover adhesively bound to one edge of the book block, the one edge of the book block constituting the spine of the book block. The book block has a plurality of sheets of paper onto which the text of the book has been printed. The cover is adapted to wrap around the spine and to be adhesively adhered to the spine. More specifically, the apparatus disclosed herein comprises a fixture receiving the sheets of paper and forming the book block on the fixture. A first clamp is provided for holding the book block relative to the fixture with the spine of the book block exposed for the application of adhesive thereto and for adhesively binding the spine to a cover. An adhesive application station applies adhesive to the spine of the book block. The fixture is movable from a first position in which the fixture is positioned to receive the sheets to a second position in which the book block held by the first clamp is positioned relative to the adhesive application station for the application of adhesive to the spine. A drive is provided for moving the adhesive application station relative to the book block for the application of adhesive to the spine of the book block. Further, the fixture with the book block held thereby by the first clamp is selectively movable toward and away from an adhesive applicator member so as to vary the thickness of the coating of adhesive applied to the spine by the applicator member in relation to the thickness of the book block being bound. Specifically, the adhesive thickness applied to the spine may be varied in response with the thickness of the book block in accordance with the following relationship: AT=b+mX, where AT is the adhesive thickness, b is the minimum gap between the spine of the book block and the top of the adhesive application member (e.g., a wheel) for a book block of a minimum thickness (e.g., the book block have about 25 sheets of paper), and where mX is the thickness of the book block.
In another embodiment disclosed herein, apparatus for binding a perfect bound book is disclosed. This embodiment comprises a first clamp for holding the book block with the spine of the book block exposed. An adhesive application station is provided for applying adhesive to the spine of the book block upon relative movement of the book block and the adhesive application station. The adhesive application station has an adhesive reservoir in which is contained a supply of a suitable liquefied adhesive (preferably, but not necessarily, a hot melt adhesive). An adhesive application wheel is partially immersed in the adhesive in the reservoir with the wheel being rotary driven about its central axis. The wheel has a peripheral surface carries a coating of the liquefied adhesive thereon as the wheel rotates up out of the adhesive in the reservoir. The top surface of the wheel and the spine have a variable operative relation relative to one another for the application of adhesive to the spine in response to the thickness of the book block so that the amount of adhesive may be varied in relation to the thickness of the book block within a range of book block thicknesses ranging from a minimum thickness to a maximum thickness. The variable operative relation comprises a gap between the top of the wheel and the spine where the gap may range between a minimum gap corresponding to an operative position for applying adhesive to a book block of the minimum thickness (e.g., about 25 sheets in the book block) and an increased gap corresponding to an operative position for applying adhesive to a book block of the maximum thickness (e.g., about 400-500 or more sheets in the book block). A drive is provided for moving the first clamp and the spine of the book block carried by the first clamp vertically toward or away from the wheel in response to the thickness of the book block to which adhesive is to be applied. The mathematical relationship between the operative positions for applying the adhesive for book blocks ranging between the noted the minimum thickness book and the noted maximum thickness may be as described above.
A method of binding a perfect bound book is also disclosed including, but not limited to, the following steps. The sheets of paper are accumulated in a fixture so as to form the book block. The sheets are positioned in the fixture so that the spine and one side of the book block are accurately positioned relative to the fixture. The book block is clamped in position with respect to the fixture. Then, the book block is moved toward an adhesive application station. With the book block positioned at an operative position with respect to the adhesive application station, the adhesive application station is moved relative to the book block for the application of adhesive to the spine.
Further in accordance with the method of this disclosure, the operative relationship between the spine of the book block being bound and the adhesive application station may be varied in relation to the thickness of the book block of the book to be bound within a range of book block thicknesses ranging between a minimum thickness and a maximum thickness. More specifically, the operative relation between the spine of the book block being bound and the wheel is a gap therebetween, where the method includes varying the gap between a minimum gap corresponding to an operative position for applying adhesive to the spine of a book block of the minimum thickness and an increased gap correspond to an operative position for applying adhesive to the spine of a book block of the maximum thickness. Still further in accord with this method, the thickness of the adhesive applied to the spine of the book block in accordance with the relationship AT=b+mX, where AT is the adhesive thickness, b is the minimum gap between the spine of the book block and the wheel, and where mX is a function of the thickness of the book block.
Other objects and features of the disclosure will be in part apparent and in part pointed out hereinafter.
Corresponding reference characters indicate corresponding parts throughout the several views of the drawing.
Referring now to the drawings and particularly to
As shown, the page printer 3 is positioned on a raised platform or cart 9 of such height that the sheets printed by the page printer and ejected therefrom are at a height so that the pages enter a page de-curler 13 (as shown in
By the term “text pages” it will be understood that this refers to the pages of a book B between the front and back cover of the book whether they have text, photos, or other figures printed thereon, or whether the pages are blank. The text pages may also include the title page, the table of contents, index, and appendices. As noted, page printer 3 is preferably a duplex printer that prints on both sides of the sheets of paper that make up the book block, but a simplex may be used as well. As used herein, the terms “text page”, “page” and “sheet” may be used somewhat interchangeably, but it will be understood that generally there are only about half as many sheets of paper as there are pages in a book block BB because in a typical book block, each face of a sheet is referred to as a page. Book block BB is shown to be generally rectangular or square. As shown in FIG. 10 of U.S. Pat. No. 7,014,182, which is herein incorporated by reference in its entirety, the book block has major and minor sides with one of the major sides constituting spine S of the book block. Likewise, a perfect bound book B formed from book block BB is also rectangular. However, those skilled in the art will recognize that other polygonal shapes for a book block may be employed in accordance with this disclosure. It will be further understood that if the book block is square, the major and minor sides of such a square book block are of the same length. In such case, the spine may be along one of the sides of the square book block.
Referring now to
More specifically, accumulator frame 17 is pivotally mounted within an accumulator mounting frame 23 for pivotal movement about pivot points 25 between the above-described first or inclined position (as shown in
As generally indicated at 29, accumulator or carriage 11 is provided with an accumulator clamp for positively holding (clamping) the book block BB relative to the accumulator bed 15 as the accumulator rotates from its first to its second position. This accumulator clamp 29 is sometimes referred to as a first clamp and it holds the book block BB in a predetermined position in the accumulator or carriage 11 on bed 15 as the book block is transported to other stations along a work path WP, as indicated by an arrow in
Accumulator clamp 29 includes a clamp plate 30 engageable with the upper face of the book block BB when the accumulator is in its inclined position (as shown in
It will be understood that when accumulator stop plate 21 is in its stop position and as the pages are discharged into the accumulator/fixture 11, the leading edges of the pages will engage the stop plate and this the stop plate will determine the position of one edge (the spine S) of book block BB relative to the accumulator. As shown in
As previously noted, stop plate 21 is mounted for pivotal movement relative to bed 15 between an operative position in which the stop plate is in position to be engaged by an edge of each page of the book block BB as the pages are ejected from de-curler 13 into accumulator 11 and a retracted position (as shown in
As generally indicated at 45, a drive is provided for moving accumulator/fixture 11 in a vertical direction from a first position, as shown in
Drive 45 includes a drive 47 (preferably a stepper gearmotor) that rotates a vertically disposed drive screw 49, which threadably engages accumulator frame 23 and thus effects vertical movement of the accumulator/fixture 11 along at least a portion of workpath WP. More specifically, upon operation of motor 47 in one direction, the drive screw moves the accumulator frame 23, the accumulator 11, and the book block BB held therein downwardly along the work path WP, and operation of the motor in the opposite direction moves the accumulator upwardly. Of course, upon de-energization of motor 47, the accumulator and the book block held thereby are effectively held stationary at any position along the workpath. Those skilled in the art will recognize that the weight of the accumulator on drive screw 49 is not sufficient to backdrive the motor thus locking the accumulator in place along the track 50. As indicated at 50, a vertical track is provided for accumulator mounting frame 23 for vertical movement along the workpath.
As best shown in
Tappers 51 and 53 are of similar construction and operation. These tappers comprise fingers 55 carried by a rotary solenoid motor energized after each sheet (or small group of sheets) has been delivered to the accumulator the fingers tap each sheet toward stop plate 21 and toward side 19 so as to insure all of the pages in book block BB are properly positioned relative to one another and to insure that none of the sheets of the book block hang up or are uneven. In this way, it is insured that as each sheet or each group of sheets or pages are deposited in the accumulator, these last deposited pages can be readily moved relative to the accumulator and to the previously deposited pages so that all of the pages of the book block BB are accurately positioned in known positions relative to side plate 19 and stop plate 21. It will be further understood that these tappers will overcome any static electricity charges carried by the pages so that the pages of the book block are uniformly arranged relative to one another and relative to the side plate and stop plate of the accumulator so that all pages of the book block are accurately positioned in the accumulator.
It will be appreciated that the apparatus 1 may print, bind and trim a wide range of book sizes and thickness within a limited range. For example, the pages of the book block are preferably printed on a standard size sheets of a suitable paper (e.g., 8½×11, A4, or the like) in known locations on the sheets such that the excess margins of the sheets may be determined by the computer control system CS and such that these excess margins may be trimmed at a trimming station 61 so as to produce a finished book of a predetermined size. For example, in the printing of a typical book block, the matter to be printed will be centered heightwise relative to the spine (e.g., one of the major sides of the sheets) and spaced a short distance (one half of the gutter of the printed book, i.e., the blank space between facing pages of the book) from the major side that will constitute the spine S of the book block BB. In this manner, the margins along the major side of the book block opposite spine S and the margins along the top and bottom side of the book block may be readily calculated by the computer control system CS so that the book may be trimmed to have a predetermined finished dimension. In addition, books of a wide range of thicknesses may be printed, bound, and trimmed by the apparatus 1 preferably ranging between about 50 pages (about 25 sheets) to about 850 pages (about 425 sheets) or more. It will also be appreciated that the size of the book and the number of pages in the book block for a particular book are part of the information regarding the printing and binding and trimming of the book given to the computer control system CS controlling operation of the apparatus.
As noted, once accumulator 11 is moved from its inclined to its vertical position as shown in
As best shown in
Adhesive application station 57 further includes an adhesive reservoir (sometimes referred to as a glue pot) 69 of a size (volume) so as to contain a sufficient supply of liquefied hot melt or other adhesive A (as shown in
Adhesive application station 57 includes an adhesive application drum or wheel 71. This drum is rotatably mounted with respect to reservoir 69 for rotation about a horizontal central axis such that the lower portion of the wheel is immersed in the above-noted liquefied adhesive in the reservoir 69. The wheel 71 is rotatably driven by a variable speed drive motor 73. This motor may be energized by the computer control system CS just prior to the application of adhesive to the spine S of a book block so that as the drum rotates up out of the adhesive, its outer peripheral surface carries a coating of the liquefied adhesive AC thereon which is applied to the spine of the book block, preferably in the manner as will be described below. It is understood that because the drum is partially immersed within the heated adhesive within the reservoir, the drum is also heated to an elevated temperature and thus helps maintain the elevated temperature of the adhesive on its peripheral surface prior to application to the spine. This helps insure that the adhesive will have adequate working time to be moved from the adhesive application station to the binding station 59 so that cover C is properly adhesively bound to the spine of the book block.
As shown in
As shown in
As shown in
Wheel or drum 71 may be driven by motor 73 in a direction (as shown by the arrow in
Wheel 71 may be rotated in either direction to apply adhesive to spine S. That is, as shown in
It has been found that if wheel 71 is rotated in the opposite (clockwise) direction from that shown in
It will be appreciated that the above-noted standing wave SW formed on the periphery of wheel 71 will be so formed regardless of the direction of rotation of the wheel. When the wheel is rotated in the direction opposite to the direction of movement of the wheel relative to the stationary book block spine S and when it is desired to apply a heavy coating of adhesive to the spine, the wheel is rotated at a speed by motor 73 such that the standing wave will be formed at the upper reach of the wheel rotating into the spine in timed relation to the spine entering the adhesive application zone (e.g., the upper surface of wheel 71). This avoids the build-up the adhesive on the leading end of the spine, but allows adhesive to be applied to the spine at a faster rate than if the wheel is rotated in the direction of travel of the adhesive application station. Alternatively, this same result could be achieved by speeding up the rotation of the wheel 71 after the leading end of the spine has entered the adhesive application zone. By increasing the speed of rotation of the wheel, the height of the standing wave SW is increased. By applying adhesive to the spine at a faster rate and in an excess amount and then wiping off the excess adhesive, the adhesive will better wet the edges of the text pages making up the spine S and will better penetrate between the individual pages of the book block at the spine.
More particularly, carriage 75 on which adhesive application station 57 and spine roughener 63 are mounted is slidably movable along track 76 generally lengthwise of spine S of the book block BB from an initial position at the right-hand end of the track (as viewed in
As noted above, the thickness of the adhesive coating AT applied to spine S by the adhesive application station 57 may be controlled or varied by adjusting gap G (see
As noted, motor 47 driving drive screw 49 is preferably a stepper gearmotor, as is readily commercially available from a number of sources. Such stepper motors are typically provided with an encoder (not shown) that has a predetermined number of counts for each revolution of the drive shaft of the motor. For example, motor 47 may have 2048 counts for each revolution of its drive shaft and for each revolution of the drive screw. Drive screw 49 is preferably a threaded lead screw (or ball screw) and as such has a known pitch (i.e., the distance between two adjacent threads). For example, drive screw 49 may have a pitch of 0.25 inches (6.35 mm.). Thus for motor 47 and for drive screw 49 in the above example, the resolution of the drive is 0.25 inches/2048 counts=0.000122 inches (0.0031 mm.) for each count. It will be understood that this is only one example of the number of counts for the stepper motor encoder and for the pitch of a particularly drive screw. Those skilled in the art will appreciate that other stepper motors, drive screws and, in fact, other linear actuators, may be used in place of motor 47 and drive screw 49 in the above example.
More particularly, using the numbers of the above example, drive 45 has a “home” position know to the computer control system CS, where this “home” position is used as a reference position for the book block as it moves along workpath WP. Thus, when the accumulator mounting frame 23 is in its fully raised position (as shown in
As noted, the thickness of the coating of adhesive applied to the spine S at the adhesive application station 57 may be varied in relation to the thickness of the book block of the book then being printed and bound. It will be appreciated that a first book to be printed, bound and trimmed by apparatus 1 may be relatively thin (e.g., 100 pages or 50 sheets) and the next book may be thick (e.g., 850 pages or 425 sheets). It has been found to be desirable to vary the thickness of the adhesive applied to the spine of book blocks in relation to the thickness of the book block. This is accomplished by varying the width of gap G (as shown in
For example, if a book containing 500 pages (250 sheets) in its book block BB is to be bound, the number of pages (or sheets) in the book block is made known to the computer control PLC. In accordance with the above relationship, AT=b+mX, where b is an initial position (e.g., 68,430 counts), where m is a constant factor (e.g., 0.5), and where X is the number of pages in the book block, in counts. Thus, for a book having 250 pages, the adhesive thickness AT=68430+(0.5×250=125 counts)=68,555 counts. Of course, where one count=0.25 inches/2048=0.000122 inches/count, the gap G would be increased about 0.015 inches (0.38 mm.). In another example, if the thickness of the book block is 850 pages (425 sheets), the width of gap G would be increased about 0.025 inches (0.66 mm.).
Alternatively, instead of approximating the thickness of the book block BB by taking into account the number of pages or sheets in the book block and then varying the thickness of the adhesive applied to the spine S, as described above, it has been found that in certain situations it may be desirable to accurately measure the thickness of the book block to be bound after it has been firmly clamped in accumulator clamp 29. It will be appreciated that a number of factors in addition to the number of pages or sheets of paper may affect the thickness of the book block. For example, the type of paper used and the ambient humidity will impact the thickness of the book block. Exposure of the paper to excessive humidity for a sufficient time will cause the thickness of the paper sheets to swell. Further, using a heavier paper will increase the book block thickness in ways that cannot be predicted merely by relying on the number of pages or sheets in the book block to estimate the thickness of the book block.
More specifically, the true thickness of the book block BB as it is clamped in accumulator clamp 29 may be determined by mounting a laser measuring device, as best shown at 82 in
In such a system using a laser measuring sensor 82 or a linear variable differential transformer to determine the thickness of the book block spine S and to adjust the width of gap G (as shown in
After adhesive is applied to spine S, the adhesive application station 57 latter is moved to a position clear of the spine (as shown in
The accurate determination of the book block thickness also allows the computer control system to print the cover C for that book block in such manner that the width of the cover spine may be adjusted so as to accommodate thicker or thinner book blocks and in such manner that the front and back faces of the cover may be printed on the cover stock in such manner that the front and back faces of the cover are properly spaced in relation to the adjusted width of the cover spine. In this manner, with the centerline of the cover spine in register with the centerline of spine S of the book block, the front and back faces of the cover will properly overlie the front and back faces of the book block. Accordingly, when the bound book is trimmed, the cover will be in the proper position with respect the front and back faces of the book block such that when the book is trimmed, the cover will be in proper timed relation relative to the book block.
By actually measuring the true thickness of the book block BB as the book block is held in clamp 29, the true centerline of the book block may be determined. As will be appreciated, one half of the measured book block thickness is the true centerline of the book block. More specifically, the distance from accumulator bed 15 (which constitute a reference surface for the book block) plus one half of the measured thickness of the book block gives the location of the true centerline of the book block relative to bed 15. It will be further appreciated that because the bed 15 serves as the reference surface for the book block as the book block and the bound book are moved to the adhesive application, then to the binding station, and then to trim station 61 such that the position of the book block and the bound book is known to the computer control system CS. In turn, by determining the true centerline of the book block as it is held by clamp 29, the computer control system CS will then “know” the position of the true centerline of the particular book block about to be bound in binding station 59. By knowing the true centerline and thickness of the spine S of the book block BB of each book about to be bound, the computer control system may adjust where cover printer 5 prints the front cover image, the spine image, and the back cover image on the cover stock so that for the book being printed and bound by apparatus 1 the spine of the cover is properly in register with and is the same width as the spine S of the book block, and so that the front and back covers of cover C are in proper register with the front and back faces of the book block. It will be appreciated that this takes changes in the thickness of the book block that may result from humidity and a change in the paper stock used to print the book block.
As noted, if the paper is exposed to high humidity levels prior to the book block being printed, the book block may be appreciably thicker than if the book block would be printed on “dry” paper that had not been exposed to these high ambient humidity levels. In some cases, the thickness of a thick book block of 400 sheets could vary about 0.10 inches to about 0.20 inches (2.5-5 mm.) because of the effect of humidity on the thickness of the paper sheets. Likewise, if a book block is printed on different paper stock, this can appreciably increase or decrease the thickness of the resulting book block. These differences in book block thickness for the same book and cover may have the effect of making cover spine (i.e., the center portion of the cover that ideally is in register with book block spine S) for that book to be too small to fit the thicker book blocks or too big to fit the thinner book blocks. In turn, this oftentimes gives the finished book the appearance of having an ill-fitting cover.
By actually measuring the thickness of the book block, the centerline of the book block can be determined. Further, upon measuring the thickness of the book block as it is actually printed, this actual thickness will reflect changes in book block thickness due to the paper having absorbed moisture or from being on thicker or thinner paper. This information can then be fed in to computer control system CS to modify the width of the cover spine, and the position of the front and back images of the cover and where they are printed on the cover stock in relation to cover spine.
With the cover C having been printed in relation to the thickness of the book block to which it will be bound and with the position of the true centerline of the book block and the true centerline of the cover having been established, it will be appreciated that as cover C is fed by cover conveyor 83 onto binding table 85, the cover can be accurately positioned on the binding table such that the centerline of the cover will be in register with the centerline of the book block spine when the book block is brought into binding relation with the cover. More specifically, the size of the cover stock upon which cover C is printed by cover printer 5 is known. For example, the cover stock may be 11×17 stock. As noted, the front, spine and rear images of the cover may be printed on the cover stock in predetermined locations. As the cover stock is conveyed to the binding table or clamp 85 by cover conveyor 83, rollers 84 are controlled by stepper motors under the control of the computer control system. A photocell 86 is positioned relative to the cover conveyor that senses the leading edge of the cover C as the cover is conveyed to the binding table. This photocell also senses when the trailing edge of the cover has moved clear of the photocell so as to generate a signal to the computer control system so as to terminate operation of cover conveyor. Then, the stepper motors driving conveyor rollers 84 may be operated in reversed to as to back up cover C so that the centerline of the cover is in register with the centerline of the book block. In this manner, the centerline of the book block and the centerline of the cover are in register with one another.
As shown in
As indicated at 91 in
More specifically, upon binding of the cover to the book block and while the now bound book B is still gripped by clamp jaws 87a, 87b so as to permit the adhesive to bind the cover to the spine of the book block, accumulator clamp 29 is operated to release its grip on the book block BB proximate spine S, and drive 45 is actuated to move the accumulator clamp upwardly toward the top edge of the book block distal from the spine. There, accumulator clamp cylinder 37 is actuated so as to re-grip the book block adjacent the top edge of the book block so that as the book is re-gripped, its position is known to the computer control system CS. Then, cylinder 93 is actuated so as to retract binding floor 91, clamp jaws 87a, 87b are opened, and drive 45 is actuated so as to lower the bound book spine first between the open clamp jaws toward trimming station 61. As the bound book B is moved downwardly between the open jaws 87a, 87b, the cover will be swept inwardly toward the book block by the jaws. It will be appreciated that when the clamp 29 re-grips the book block adjacent the top edge of the book block, the position of the book block and hence of the bound book B in both heightwise and widthwise direction continues to remain known to the computer control system CS.
U.S. patent application Ser. Nos. 61/234,800 and 61/234,882, filed contemporaneously with this present application are herein incorporated by reference in their entirety.
In operation, a POD book to be printed is selected by a customer or by another person operating apparatus 1. It will be understood that a library of POD books is available, which library may contain a large number of books. Once a book is selected, the data corresponding to the text of the book is sent to text page printer 3 and the data corresponding to the cover for the selected book is sent to cover printer 5. These printers begin to print the book block BB and cover C for the selected book. Preferably, a wide variety of sizes of books may be printed on demand on a standard size paper, such as 8½×11. The text for the text pages of the book is centered heightwise on the page and is printed a prescribed distance from one major (long) edge of each text page that this one major edge will constitute the spine S of the book block BB. This in turn allows the control system to “know” what margins of the bound book must be trimmed from the book block in order to produce a finished book of predetermined size. Other data corresponding to the book to be printed (e.g., the number of pages in the book, the finished trim size along each edge of the book, and the like) may be sent to computer control system CS for purposes as will appear, below.
With accumulator 11 in its first position, as shown in
With the adhesive application station 57 in its ready position (that is, at the right-hand end of track 76, as shown in
Motor 79 is then energized so as to move spine roughener 63 and adhesive application wheel 71 relative to the stationary book block spine so that the roughener blades 65 will scrap along the spine so as to roughen the edges of the paper sheets comprising the spine. The wheel 71 will apply a desired amount (thickness) of the adhesive to the spine in the manner heretofore described. Upon the adhesive application station 57 to its position, as shown in
As various changes could be made in the above constructions without departing from the broad scope of the invention, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.
This application claims the benefit of priority of pending U.S. Provisional Patent Application 61/101,822, filed Oct. 1, 2008, and U.S. Provisional Patent Applications 61/234,800 and 61/234,882, filed Aug. 18, 2009, now PCT/US10/45708, filed Aug. 17, 2010, and U.S. patent application Ser. No. 12/576,923 having a §371(e) date of Oct. 9, 2009, and incorporated by reference in their entirety herein.
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