JPS60196760A - Method and device for checking page arrangement of printing - Google Patents

Abstract

PURPOSE:To check the arrangement of pages in the printing plate state by picking up images of two pages of a preliminarily determined combination out of images in folding units, which are arranged on a sheet-shaped base material in each color unit, by two photographic devices and displaying processed images with a preliminarily determined combination on a display device. CONSTITUTION:A sheet-shaped base material 20 where images of individual pages are arranged in each color unit is illuminated by a light source 40, and images of every pages of a preliminarily determined combination are picked up by TV cameras 30a and 30b. Cameras 30a and 30b are moved in X and Y directions by TV camera driving mechanisms 41a and 41b. A picture display controller 47 combines required picture signals in accordance with the combination determined by the folding system, the number of pages of folding, and the book opening method and subjects required pictures to inversion processing and inputs them to a picture display device 49. It is checked easily whether images of individual pages arranged on a printing layout film are arranged in a correct order or not by pictures displayed successively on the device 49.

Description

DETAILED DESCRIPTION OF THE INVENTION Conventionally, when printing books, catalogs, etc., it has been common practice to print images for a plurality of pages at once. In such a case, a printed matter with multiple pages printed is folded by a folding machine so that each page is in the correct order. By the way, in order to ensure that each page is in the correct order when printed matter is folded by a folding machine, it is necessary that the images of each page formed on the printing plate be arranged at predetermined positions. is necessary.

FIGS. 1 to 6 are for explaining an example of how to arrange the images of each page when printing 16 pages at a time. In addition, in the diagram, pages where the numbers indicating the arrangement of images on each page are displayed upside down, the images are also arranged upside down, and pages where the numbers are displayed correctly upside down, the images are also arranged upside down. This shows that they are arranged correctly. Figure 1 shows multiple pages of #, il! il iron:', (Pl: >, (P2n, I・(R3n...(P16)) are shown arranged on two sheet-like base materials 12o+c!u.Sheet-like base materials The material (2) has the pages printed on the front side arranged, and the sheet-like base material (211) has the pages printed on the back side arranged.For simplicity, the sheet-like base material (211) A transparent plastic film is used as the base material (201 (211), and multiple pages of images (Pl) to (P
l 6) is a transmission type positive stroke number or negative image pasted on the sheet-like base material (20) or C2D,
In other words, we will proceed with the explanation by taking the case of an imposition film for printing as an example, but it is not limited to this. For example, the sheet-like base material is a 28-plate for offset printing, and images (pl) to (pl6) are may be an image formed on the 28th plate.

Two printing plates are created from two sheets of printing imposition film on which the images of each page are arranged as shown in Fig. 1a) and fb), and the printing plates are used to print on paper or other printing material. Printing is done on both the front and back sides. Figure 2 shows a printed matter (221) printed using the offcent method.
Numbers in 221 indicate the pages indicated by the respective numbers, numbers without parentheses indicate the pages printed on the front of the printed matter, and numbers in parentheses indicate the pages indicated by the respective numbers. Indicates each page printed on the back side of the arranged position. That is, Section 16.1.4.
Each of the 16.9.8.5.12 pages is printed in front and arranged in the position indicated by the corresponding number. Also, No. 15.2.3.14.10.7.6.11
Each page is printed on the back and arranged in the position indicated by the corresponding number. Here again, where the numbers indicating each page are upside down, this indicates that the printed image is also upside down.

The printed matter thus obtained is first folded along line A-A, then folded along line B-B, and finally folded along line C-C.
By folding along the lines, a signature (c) is obtained in which each page is in the correct order from page 1 to page 16, as shown in FIG.

The signature obtained in the above manner is combined with other signatures as necessary, the edge of the folded part along the C-C line is used as a binding part, and the edges of the other sides are cut. You can open each page by doing this. Figure 4 (
al~(it thus shows how each page looks when opened and viewed.

As is clear from FIG. 4, the book obtained in the above manner is designed to be read from the left page, and is used for English books and horizontally written Japanese books.

Contrary to the case in Figure 4, in the case of a vertically written Japanese book, the page is read from the right page, and in this case, the images on each page are arranged as shown in Figure 5 fat fbl. After printing, folding, and cutting, the image shown in Figure 6 (
Each page can be opened and viewed as shown in at~(1).

As can be understood from the above explanation, when printing multiple pages of images (text, designs, etc.) at once, an imposition film or an imposition printing plate (see Figures 1 and 5) is created. At this stage, it is necessary to check whether the images on each page are correctly arranged at predetermined positions. However, this test includes quite complex elements. In other words, where to arrange the images of each page on the sheet-like base material depends on (a) how many pages to print at once;
(b) Whether the book is to be read from the right or from the left; and (c) what folding method should be used.

Therefore, it is very difficult to imagine whether or not the pages will be in the correct page order after the folding operation, based on the state in which the images of each page are arranged on the sheet-like base material. Therefore, even if the images of each page are arranged in the wrong position, it is difficult to detect the error, and printing plates may be produced, printed, and bound without changing the arrangement. Therefore, in such a case, not only all the materials are wasted, but also a huge amount of time is wasted.

The present invention was made as a result of various studies to solve the various problems mentioned above, and it is possible to quickly check whether or not the arrangement of pages is correct, which was previously considered difficult. The purpose is to provide a method that can be easily carried out in the state of a printing plate.

Furthermore, the present invention seeks to provide a novel device for carrying out the above-mentioned test.

Furthermore, the present invention seeks to provide a novel device for carrying out the above-mentioned test.

According to the present invention, images of each page arranged on a sheet-like base material are photographed using a photographing device, for example, a television camera, in a predetermined combination of two pages, and the images for one signature (the Taking the case in Figure 7 as an example, the sheet-like base material (208k
) and (21Bk) (each 1 and 0 images) are subjected to predetermined processing and displayed on an image display device (for example, a monitor television, etc.).

The predetermined processing refers to easily determining the order in which each page will be placed when a folding method is created according to a pre-specified folding method by looking at the image displayed on the image display device. The goal is to be able to do this. In this case, in addition to the folding method, it is necessary to specify in advance data such as the number of pages and how the book is opened (right or left).

Next, the present invention will be explained in more detail with reference to the drawings.

FIG. 8 is an explanatory diagram of two television camera drive mechanisms as a photographing device driving mechanism when images arranged on a sheet-like base material are photographed by two television cameras used as an example of a photographing device. . First of all, for ease of understanding, Figure 1~
A case will be described in which images for 16 pages as shown in FIG. 3 are arranged and printed in a single color to create a signature.

First, set the sheet-like base material ■ and the sheet-like base material (211) and print the two predetermined pages of the pasted images (P16, Pl), (p3, P2), (P4, P5).
, (5C1a). That is, the left page shown in parentheses is photographed by a television camera (51]b), and the right page is photographed by a television camera (50a) at the same time.

The images of each of the two pages thus photographed are displayed on the image display device in a predetermined combination for each photograph.

The television cameras (50a) (30b) are attached to the lead sleeves 11 knees (31a) (51b), and
-The lead screw (51a) (31b) is attached to the lead screw (51a) (31b), and the lead screw (sla) (51b) is rotated by the motor (s2a) (32b), thereby causing the television camera (30a) to rotate.
(30b) can move in the Y direction (vertical direction) along the guide bars (15a) and (35b). Also, the motor (52a
) (52b) are lead screws (34a) (34b)
-(34a)
(34b) is adapted to be rotated by motors (35a) (35b), whereby the motors (32a) (32b) are rotated by the guide bar (66a) ('56
It can move in the X direction (lateral direction) along b). As described above, the television camera can move in the X and Y directions. In addition, motor (32a) (+2b) (35a) (3
The rotation of 5b) is controlled by the motor control device (37a) (37b)
controlled by Motor control device (57a) (5
In 7b), data such as the number of pages on which the sheet-like base materials are arranged, the size of each page, etc. are given in advance, or are given each time. This allows the motor control device (3
Steps 7a and 37b move the two television cameras to predetermined shooting positions.

FIG. 9 is a schematic explanatory diagram of an apparatus according to the present invention that processes an image signal of an image photographed by a television camera as described above and displays the image on an image display apparatus.

The sheet-like base material ■ on which the images of each page are arranged is illuminated by a light source (40), and images are taken for each page in a predetermined combination using two television cameras (IAX excitation) as described above. be done.

The television camera (!10a) (30b) is moved in the X and Y directions by the television camera drive mechanism 1 (41b, ) (,41,b)...

The image signal of each photographed page is processed by a black and white level correction circuit (
42a) (42b), the black and white level is corrected by mask circuits (43a) (43b), and then passes through mask circuits (43a) (43b). The mask circuits (45a) (45b) cut out unnecessary parts of the image signal obtained by the television camera.

In other words, when one image of each page is taken by the television camera (5[1a) (30b), some of the images of unnecessary pages and pages surrounding the necessary page may also be taken. Therefore, the mask circuit (46a)
In step (46b), images of the entire unnecessary page and unnecessary surrounding pages are cut. The size of the mask is set using the mask operation sections (45a) (45b).

A keyboard or the like can be used as the mask operation section (4sa) (4sb).

The image display control device (47) uses two television cameras (50a
) (30b) selects and combines the necessary signals from the image signals photographed in step (30b), and further performs vertical reversal processing on images that require reversing the vertical direction of the image, and displays the image display device (4).
9).

The image display device (49) receives a signal from the image display control device (47) and displays the combined image.

A television or the like is used as the image display device (49).

As shown in Figure 4, the order in which the two television cameras (30a) and (lb) are photographed and how they are combined is the order in which the pages appear when each page is opened in turn in its final folded state. Do it like this. That is, as shown in FIG. 4 fal, on the first page, the image is positioned on the right side of the screen of the display device, and the left side is left blank. Next, Figure 4 (bl
The second page and the sixth page are combined so that the second page is on the left and the sixth page is on the right. Similarly, as shown in Figure 4 (cl to Figure 4 (hl), the 4th and 5th pages, the 6th and 7th pages,
8th and 9th pages, 10th and 11th pages, 12th and 16th pages, 146th → 15th page
The images of each combination are displayed in such a way that the even-numbered pages are on the left side of the screen of the image display device, and the odd-numbered pages are on the right side of the screen of the image display device. Device (4
9). And finally, the 16th page is the 4th page.
As shown in Figure fi), the image display device (4) is positioned on the left side of the screen, and the right side is left blank.

In this case, when the images of each page are arranged as shown in Figure 1 (at fbl), the images r! (P9), (P8)
, (P5), (PI3) and images (pl 1 ), (P
6), (P7), and (Plo) are upside down, so when displayed on an image display device, the images are reversed by the display control device (47) so that they can be seen in the correct state.

In addition, if the images of each page are arranged and printed and folded as shown in Figure 5 (al fbl), the result will be as shown in Figures 6 (a) to 6 (il). The combination of images of each page displayed on the display device is shown in Figure 6 fa.
1 to 6 (1).

Which image and which image should be combined to combine two TV cameras (
la) (30b) and how it is displayed on the screen depends on the folding method used to make the signature, the way the book is opened, the arrangement position of the images on each page, the number of pages in the signature, and the image on each page. This is uniquely determined by the fact that the input order of is determined in advance.

The predetermined data, i.e., how to fold when making a signature, how to open the book (right-handed or left-handed, etc.)
, the arrangement position of the images on each page, the number of pages in the signature, the input order of the images on each page, etc. are preset in the TV camera drive control device CI in advance according to the expected combination (this makes the operation easier). It is preferable to do this.In this way, by specifying the one that corresponds to the item to be inspected from among the preset data combinations, it is possible to immediately start the inspection work.As described above. The preset data can be designated or changed by shouting from the image display control device.A keyboard or the like can be used as the image display operation device.

FIG. 10 is a more detailed explanatory diagram of the image display control device (47), in which an image to be displayed on the image display device (49) is instructed by an instruction signal (3)K from the image display operation device (50). Ru. The instruction signal (Sl) includes information such as the number of the double-page spread. The instruction signal (Sθ is input to the processing content selection device (ω). On the other hand,
The reference pattern table (61) stores data on whether the image direction of each page to be displayed is an upright image or an inverted image, which is determined in advance according to the number of pages of the signature, the method of folding, etc. The processing content selection device (60) receives an instruction signal (S
, ) to determine whether the image of the page to be displayed is to be displayed as it is as an upright image or whether to be displayed upside down, with reference to a pre-stored reference pattern table (61). , the processing contents are processed as processed signals (S,), (S,) by the data processing device I7J.
, (63), the image signals (S4), (S,) for two pages of a double-page spread to be displayed on the photographing device (5[a) (30
b) are selected and input respectively.

Based on the input processing signal Qs4), the data processing device subjects the image signal (S4) to upside-down processing if the processed signal (S,) is a signal that should display the image upside down; When the processed signal (S2) is a signal that should display the image as it is as a royal image, the image signal (S4) is input to the image synthesis device (64) as a synthesis signal (S6) with the vertical direction unchanged. The data processing device similarly performs the necessary processing on the image signal (S,) based on the processed signal (&) to generate a synthesis signal (S?).
is input to the image synthesis device (64).

The image synthesis device (64) synthesizes signals for synthesis (S8) and (S7).
The two pages are combined so that the two-page spread looks like the one shown in FIG. 4 or 6. In other words, the image synthesis device 1641 generates two synthesis signals (S6) and (S6).
Based on 7), the image display device (4 screens are divided into left and right halves and an image based on the synthesis signal (S6) and an image based on the synthesis signal (S,) are displayed on each side together. The synthesized signal (S,) thus synthesized is input to the image display device (4), and the synthesized image is displayed.

As mentioned above, the images of each page are combined to create a
By sequentially displaying the images on the image display device as shown in FIG. 4 fil or FIG. In other words, if the images of each page arranged on the imposition printing film are arranged in the correct position and in the correct state, the images displayed on the image display device can be easily checked. are sequentially displayed in a state as illustrated in FIG. 4 or FIG. If the arrangement of images on a page is incorrect, the order or combination of images displayed on the image display device will be incorrect.Therefore, the images of each page that are sequentially displayed on the image display device will It is very easy to check whether or not they are arranged in the correct position.

FIG. 11 is for explaining the relationship between the images arranged on the sheet-like base material (a) and the images synthesized and displayed by the apparatus of the present invention. In FIG. 11 1al, images P4 and P5 on the fourth and fifth pages respectively show an image of a dog's head and a picture of its tail.

If this arrangement is correct, the images of the fourth and fifth facing pages are correctly combined and displayed on the screen of the image display device, as shown in FIG. 11 la.

However, if the image P4 or P5 in FIG. 11 1al is arranged in the wrong position or upside down, the image synthesized and displayed on the screen of the image display device will be the image shown in FIG. 11. (Since it is not displayed in the correct state like bl, it can be instantly determined that the arrangement state is incorrect.

Although the present invention has been mainly described above with respect to a 16-page fold, it can also be applied to a 52-page fold or other number of pages. Furthermore, there are various folding methods other than those described above, and it is natural that the present invention can be applied to each folding method.

According to the present invention, images for multiple pages are printed on both the front and back sides according to a predetermined folding pattern, and when a printed book is finally folded and each page is sequentially opened and viewed, the left side that is visible at the same time. Since the image on the page and the image on the right page are taken with two television cameras, it is possible to quickly check whether the images on each page are correctly arranged and attached at the printing imposition film stage. Since changes can be made easily and reliably, it is possible to prevent material losses and time losses caused by misalignment of each page.

Furthermore, according to the present invention, the 2
Although it can be applied at the stage where an image is formed on a plate-shaped printing plate material such as an 8-plate, the effect is greater when it is applied at the stage of forming an imposition film for printing.

Those skilled in the art will be able to add other functions to the apparatus of the present invention, such as making the magnification of the displayed image variable, as necessary.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of images of multiple pages arranged on two sheet-like base materials, and Figure 2 is an explanatory diagram of images of each page arranged as shown in Figure 1 on one printing medium. An explanatory diagram of the printed matter when printed on both sides, Figure 3 is an explanatory diagram of a signature folded from the printed matter in Figure 2, and Figure 4 is an illustration of how each page is printed when bound from the signature in Figure 6. An explanatory diagram explaining how it is visible,
Figure 5 is an explanatory diagram of another state in which multiple pages of images are arranged on two sheet-like substrates, and Figure 6 is after the images in the arrangement state in Figure 5 have been printed, folded, and bound. An explanatory diagram explaining how each page looks; FIG. 7 is an explanatory diagram of a sheet-like base material having an image for one signature in four-color printing; FIG. 8 is an illustration of a television camera of the apparatus of the present invention. A schematic explanatory diagram of the drive mechanism, FIG. 9 is a block explanatory diagram of the device of the present invention, and FIG.
FIG. 0 is a detailed explanatory diagram of the image display control device, and FIG. 11 is an explanatory diagram showing the relationship between a page array image and a composite display image. (201 (21+...Printed material of sheet-like base material t23)...Signature (30a) (30b)"・TV camera (31a) (31b) (34a) (34b)
-1-1-Toscrew (32a) (32b) (Wa)
(35b) ... Motor (35a) (35b) (3
6a) (36b) - Guide bar (37a) (37b
) - Motor control device (40)...Light source (41
)...TV camera drive mechanism (42a) (42b)...Black and white level correction circuit (5a) (5b) -Mask circuit (45a) (45b)...Mask operation unit (4
7)...Image display control device (49)...Image display device (50)...Image display operation device (52)
...TV camera drive control device (60)...Processing content selection device (61)...Reference pattern table (
62), (63)...Data processing device (64)
...Image synthesis device patent application Representative Kazuo Suzuki, Toppan Printing Co., Ltd. Figure 1 Figure 2 CAC Figure A-Figure'-Go51Σ1 Figure 6 Figure 9 Figure 10

Claims (1)

[Claims] () In a method of inspecting whether images of each page are arranged at predetermined positions when printing images of one or more pages at once, Two pages of a predetermined combination of arranged signature unit images are photographed using two photographing devices, and one page of each is photographed using one photographing device, and an image is generated based on the image signal for each page. is displayed on a display device in a predetermined combination of pages set in advance, and the inspection is performed based on whether the displayed image is in the correct position and in the correct page type. A printing page arrangement inspection method featuring 21 light sources and two photographing devices capable of photographing at least one page of multiple pages of images arranged on a sheet-like base material in units of each color at a time. and a photographing device drive mechanism that drives the two photographing devices in the X and Y directions, respectively;
an image display device that displays the image signals photographed by the photographing device in units of signatures for each page; and an image display device that combines the image signals of each page photographed by the photographing device in a predetermined combination, and also displays the vertical direction of the image. an image display control device which processes an image that needs to be reversed vertically, synthesizes image signals of corresponding pages, and then sequentially inputs the images to the image display device to display the combined images on the image display device; A printing page arrangement inspection device comprising: