JPS5962153A - Method and apparatus for inspecting page arrangement for printing - Google Patents

Abstract

PURPOSE:To exactly check misarrangement of pages at the stages of films with printing faces by a method in which pictures with signature unit are photographed on a sheeted base material for every page in a predetermined order by a television camera and displayed in a predetermined order and combination. CONSTITUTION:For example, pictures of each page of one signature unit for 16 pages are bonded with a sheeted base material 20 and photographed in a given order by television camera 30. The picture signals are stored in a memory 44, and pictures based on picture signals for every page stored are displayed on a displayer 47 in the order of pages in a predetermined combination. It is inspected whether or not the pictures are on right positions and in right orders.

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, the image arrangement state of each page is as follows: Pages where the numbers shown are displayed vertically are also arranged upside down, and pages where the numbers are displayed correctly vertically are The images also show that they are correctly arranged vertically. Figure 1 shows images of multiple pages (1) 1 ), (P2), (P6
)...(P16) on two sheet-like base materials (20) (
A state in which they are arranged in 2D is shown. Sheet-like base material (
2ON';j1 The pages to be printed on the front are arranged, and the pages to be printed on the back are arranged in sheet form (2+1. For simplicity, the sheets are shown in Figure 1. A transparent plastic film is used as the base material f2F++ 1121J, and multiple pages worth of images (Pl
) to (P 16 ) will be explained by taking as an example the case of a transparent positive image or a negative image pasted on the sheet-like base material (20) or (2I), that is, the case of imprinted soil for printing. However, the invention is not limited to this. For example, the sheet 1-shaped base material is a Ps plate for offset printing, and the images (Pl) to (P16) are images formed on the above-mentioned 8) plate. Also good.

A printing plate is prepared and used to print on both sides of paper or other printing material. Figure 2 shows a printed matter (22) printed by the offset method, and the numbers attached to the printed matter (22) indicate the pages indicated by each number, and the numbers without parentheses indicate the printed matter (22).
The numbers shown in parentheses indicate the pages printed on the back side of the position where each number is arranged. That is, the first
6.1, 4.15.9.8. ．． 5. Each of the 12 pages is printed in front and arranged in the position indicated by the corresponding number. Also, 15.2%, 14.10
17% 6.11 pages are each printed on the back and arranged in the position indicated by the corresponding number. Here, too, where the numbers indicating each page are upside down, this indicates that the printed image "1-1" is also upside down.

The thus obtained printed matter (22) was first folded along line AA, and then folded along line 13-B.

Finally, by folding along the line C--C, a signature 23) in which each page from page 1 to page 16 is in the correct order as shown in FIG. 6 is obtained.

The signatures obtained in the above manner are combined with other signatures as necessary, and the edge of the part folded along the C-C line is used as the binding part, and the edges of the other sides are used as binding parts. You can open each page by cutting it out. Figure 4 (
A) to (1) thus show how each page looks when opened and viewed.

As is clear from FIG. 4, the book obtained in the above manner is read from the left page, which is used in English books and books in horizontal writing θ and Japanese.

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 image of each page is shown in Figure 5 (a) 6 (after printing, folding, and cutting)
You can open and view each page as shown in al~(1).

As can be understood from the explanations in Section 2 below, 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 used. During the creation 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. That is, 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, ()→What kind of folding method will be used, etc. This will vary depending on the category.

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. For this reason, even if the images of each page are arranged in the wrong position, the mistake may be discovered and removed, or printing plates may be produced, printed, and bound with the incorrect arrangement. Therefore, in such a case, not only the amount of separation is wasted, but also a huge amount of time is wasted.

The present invention aims to provide a method that allows easy inspection of whether or not the arrangement of pages is correct, which has been considered difficult in the past, using a surface-covering film or a plate-like printing plate. It is. Furthermore, the present invention seeks to provide a novel device for carrying out the above-mentioned test.

According to the present invention, one image of each page arranged on a sheet-like base material is photographed with a television camera at a predetermined angle, and an image for one signature (the first Taking the case shown in the figure as an example, the images of each page arranged on the sheet-like base material (20) ρ1) are stored in the storage device.Next, based on the image signals stored in this way, The image is subjected to predetermined processing and displayed on an image display device (for example, a monitor television).

The predetermined process is a process in which the order of each page is easily determined by looking at the image displayed on the image display device when a signature is produced according to a pre-designated folding method. The goal is to be able to make decisions. In this case, in addition to the folding method, it is necessary to specify in advance data such as the number of pages and the way the book is opened (right or left).

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

FIG. 7 is an explanatory diagram of a television camera drive mechanism when images arranged on a sheet-like base material are photographed by a television camera. An example will be explained in which 16 pages worth of images as shown in FIGS. 1 to 7 are arranged and printed to make a signature.

First, the image attached to the sheet-like base material (20) is
9, P8- P5. Pl 2, p13, Pl4, P1=
Take pictures with a TV camera (30) in the order of Pl 6, then remove the sheet-like base material (20), set another sheet-like base material (2] I, and take the image attached to it. As before, pii, P 6. P 7. I) 10
．． Take pictures in the order of pi5=■)2, l)3, and p14. The image of each page thus photographed is stored in the storage device in the form of an image signal. This means that all image signals required for one signature are stored in the storage device.

The television camera (30) is attached to a lead screw head), and the lead screw (31) is rotated by a motor (32). −
(Overflowing to 331, it can move in the X direction (lateral force direction). Also, the motor (132) &-J, lead screw,, -(
The lead screw (34) is attached to the lead screw (34).
) is rotated by three motors, and the three forces are taken by moving in the Y direction (vertical direction) along the guide bar (3G). The TV camera can move freely in the X1Y directions.Motor CJ2) (The three rotations are controlled by the motor control device (37).Motor control device F37) K is a sheet-like base material or arranged. The number of pages, the size of each page, etc. [theta]] are given in advance or are given each time.The motor control device (37) moves the television camera to a predetermined photographing position depending on the number of pages and the size of each page.

FIG. 8 is a schematic explanatory diagram of an apparatus according to the present invention that processes an image signal of an image taken by a television camera and displays the image on an image display device.

The sheet-like base material CO) on which the images of each page are arranged is illuminated by a light source (40), and each page is photographed by the television camera (30) as described above. The television camera (30) is moved in the X and Y directions by a television camera drive mechanism (41). The image signal of each photographed page has its black and white level corrected by a black and white level correction circuit (42), and then passes through a mask circuit (43) and is stored in a storage device (44). The mask circuit (43) cuts out unnecessary parts of the image signal obtained by the television camera. In other words, when the image of each page is taken by the TV camera (30), some of the images of the pages surrounding the desired page may also be taken, so the mask circuit (not needed on the 4th floor) is used. The size of the mask is set in the mask operation section (451K).The size of the mask is set at 451K. The image signals of all the pages required for one signature are stored in the storage device (44).In this case, the images of each page are taken in a predetermined order, so that each It is possible to determine in which position the image signal stored at the address of ii!lii @ is arranged.

The image display control device (46) displays the images stored in the storage device (46) in accordance with the combination method determined by the folding method and the number of pages in the signature (right-handed, left-handed, etc.). Combine the signals, and further reverse the vertical direction of the image.The images that need to be vertically reversed are sequentially input to the image display device (+7), and the combined images are displayed on the image display device (+7). be.

A television or the like may be used as the image display device (47).

As shown in FIG. 4, the image signals are combined so that when each page is sequentially opened in the folded state, the pages appear in the order in which they appear. That is, FIG. 4(a)
As shown in Figure 4(b), the first page should be placed on the right side of the screen of the image display device, and the left side should be blank.Next, the second and sixth pages should be placed on the right side of the image display device screen. The pages are combined so that the second page is on the left and the sixth page is on the right.

Similarly, as shown in FIG. 4(C) to FIG. 4(1),
4th and 5th pages, 6th and 7th pages.

8th and 9th pages, 10th and 11th pages, 12th and 15th pages, 14th and 15th pages
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. Display it on the device C power. And finally, the 16th page is Figure 4 (
As shown in i), it is located on the left side of the screen of the image display device (47), and the right side is left blank.

In this case, if the images of each page are arranged as shown in FIGS. 1(a) and (b), the images (P9), (P8), (
P5), (PI3) and image (pll), , (P6),
(1'7), . . . (I)10) are upside down, so when displaying them on an image display device, the upside down processing is performed 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 Fig. 5(a) (bl), the images shown in Fig. 6(a) to 6(il I/C) will be printed and folded. In this case, the combination of images of each page to be displayed on the image display device is the sixth
Determine the VC as shown in FIGS. (a) to 6(i).

Which image is combined with which image 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 number of images on each page. This is uniquely determined because the input order is determined in advance. The predetermined data, i.e., how to fold when making a signature, how to open the book (right-opening or left-opening, etc.), the arrangement position of images on each page II'σ, 4) 7 pages 0) It is preferable to preset the number of pages and the input order of images for each page according to the expected combination in advance for easy operation. . In this way, by specifying the data that corresponds to the item to be inspected from among the preset data combinations, the inspection preparation device (48
) may be a keyboard or the like.

As described above, if the images of each page are arranged in the correct order and in the correct position and in the correct state as shown in FIG. Images are displayed under predetermined conditions (i.e., if the arrangement of the images on each page is incorrect (right-opening or left-opening), the order or combination of images displayed on the image display device will be incorrect. Therefore, it is possible to very easily check whether the images of each page are arranged in the correct position or not by the images of each page that are sequentially displayed on the image display device.

Although the present invention has mainly been described with respect to a 16-page fold, it can also be applied to a 32-page fold or other pages with other numbers of pages.

Furthermore, there are various folding methods other than those described above, but it goes without saying that the present invention can be applied to each folding force as well. Since it is possible to easily and reliably check whether or not each page is correct, it is possible to prevent material and time losses caused by misalignment of each page.

Furthermore, according to the present invention, the leakage P can be used in offset printing method.
Images can be formed on a plate-like printing plate such as an 8-plate.

[Brief explanation of drawings]

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 6 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 bound when bound from the signature in Figure 5. 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 base materials, and Figure 6 is an explanatory diagram of another state in which images for multiple pages are arranged on two sheet-like base materials. FIG. 7 (1) is a schematic illustration of the television camera drive mechanism of the device of the present invention, and FIG. 8 is a block diagram of the device of the present invention. (20+ 011... Sheet-like base material (221...
Printed matter t23)...Signature (3t11...TV camera (3]) (341...Lead screw (
3ri (42)...Black and white level correction circuit (4'5...
・Mask circuit (44)... Patent applicant Toppan Printing Co., Ltd. Representative Kazuo Suzuki

Claims (1)

[Claims] In a method for inspecting whether images on each page are arranged at predetermined positions when printing a plurality of nine-segment images at once, the signatures arranged on a sheet-like base material Unit images are taken for each page in a predetermined order with a television camera, the image signals are stored in a storage device, and images are set in advance based on the stored image signals for each page. A page for printing characterized in that a predetermined combination of pages is displayed on a display device in the order of the pages, and the inspection is performed depending on whether the displayed images are in the correct position and in the correct page order. Sequence inspection method. (2) A light source, a television camera capable of photographing at least one page of images of multiple pages arranged on a sheet-like base at a time, and the television camera is moved in the X and Y directions. A television camera driving mechanism to be driven; a storage device that stores image signals photographed by the television camera in units of signatures for each page; an image display device; and an image signal for each page stored in the storage device. an image display control device that combines images in a predetermined combination, performs vertical reversal processing on images that require the vertical direction of the images to be reversed, sequentially inputs the images to the image display device, and displays the combined images on the image display device. A printing page arrangement inspection device comprising: