JPH0557880A - Automatic register device of printed matter - Google Patents

Abstract

PURPOSE:To provide the title register device preventing the overlap of the cross-shaped register marks of mutual colors even when registers are matched with each other to make it possible to automatically adjust the marks. CONSTITUTION:An image processor 30 has the mark origins of the different positions corresponding to the respective register marks of a plurality of colors and operates the shifts from the respective register marks of a plurality of the colors from the respective origins in response to image data to operate the register shift of the respective register marks on the basis of said shifts and the distance between the mark origins and, when the operated register shift exceeds a preliminarily inputted predetermined value, a control signal is applied to a printing press so as to reduce the operated register shift to control the printing press. A next printing message urging next printing is sent out and, when the operated register shift is the predetermined value or less, a completion message showing that the automatic correction of the register shift is completed is sent out.

Description

Detailed Description of the Invention

[0001]

The present invention relates to printed matter (printing paper).
The present invention relates to an automatic registration device for printed matter, which automatically adjusts the registration so as not to cause print misalignment when printing more than one color.

[0002]

2. Description of the Related Art Conventionally, an automatic registering device for automatically registering a multicolored print so as not to cause misregistration has a small camera installed at two predetermined positions on a final impression cylinder of a printing machine. However, each small camera detects the cross-shaped registration marks of a plurality of colors, which are respectively printed by the printing machine at predetermined two positions on the printed matter.

[0003]

However, in the conventional automatic registration device for printed matter, it is impossible to automatically adjust the registration when the registration marks are aligned and the cross-shaped registration marks overlap each other. There is. The object of the present invention is to
An object of the present invention is to provide an automatic registration device for printed matter in which cross-shaped registration marks of different colors do not overlap each other even if the registrations match, and because of this, the registrations can be automatically adjusted.

[0004]

According to the present invention, there is provided a color gamut for mounting printed matter having a plurality of color registration marks printed by a printing machine, and a color gamut mounted on the color gamut. And an image pickup means for obtaining the image information representing the registration marks of the plurality of colors by imaging the cross-shaped registration marks of the plurality of colors of the printed matter, and the image information as control information for controlling the printing machine. In an automatic registration device for printed matter, including processing means for processing, the processing means has mark origins of different positions corresponding to the registration marks of the plurality of colors, and responds to the image information. The deviation of each registration mark of the plurality of colors from each mark origin is calculated, and the registration deviation of each registration mark is calculated based on the distance between this deviation and the mark origin. The misregistration is in advance If it exceeds a prescribed value that has been applied, the control information is given to the printing press so that the calculated misregistration is reduced, the printing press is controlled, and the next print message that prompts the next printing is sent, Further, if the calculated register shift is equal to or less than the predetermined value, a completion message indicating that the automatic register shift correction is completed is sent, and an automatic registration device for printed matter is obtained.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a schematic configuration of a color gamut 11 used in an automatic registration device for printed matter according to an embodiment of the present invention. As shown in the figure, a printed matter 13 is placed on the table 12 of the color platform 11, and cross-shaped registration marks (so-called register marks) 14 and 15 are formed on the left and right ends of the printed matter 13. (Not shown)
Is printed by.

In FIG. 1, each of the registration marks 14 and 15 is represented by one so-called register mark, but in reality, as shown in FIG. , A first color (eg black) registration mark B1, a second color (eg red) registration mark M1, a third color (eg blue) registration mark C1 and 4 colors (eg yellow)
Register mark Y1 and, as shown in FIG. 3, the register mark 15 also includes the register mark B2 of the first color and the register mark M of the second color.
2, a third color registration mark C2 and a fourth color registration mark Y2. The first color registration marks B1 and B2 are the mark origins B10 and B10, respectively.
The second color registration mark M based on B20
1 and M2 are based on the mark origins M10 and M20, respectively, and the registration marks C1 and C2 of the third color are based on the mark origins C10 and C20, respectively, and of the fourth color. The registration mark Y2 is a mark
Printing is performed by the first to fourth printing units (not shown) of the printing machine with reference to the origins Y10 and Y20. Normal plate mounting accuracy is ± 0.1mm from the origin
Because of this, the mark origins B10, B20, M1
0, M20, C10, C20, Y10 and Y20 must be separated from each other by 0.3 mm or more.

In FIG. 1, the table 12 of the color booth 11 is shown.
A handy camera 16 as an image pickup means is mounted on the upper side via a flexible cord or an optical fiber 17. The table 1 is located above the table 12 of the color stand 11.
An illuminating device 22 is provided for illuminating the upper part.
FIG. 4 is a perspective view showing a schematic structure of the handy camera 16. The handy camera 16 is provided with an acrylic skirt 19 for lighting or an optical fiber 17 for projecting and receiving light in an optical lens 18 part. The camera body 20 is provided with an image reading control push button 21.

FIG. 5 is a block diagram showing a main part of the automatic registration device. With reference to FIG. 5, the handy camera 16 is operated by an operator so that the registration marks B1, M1, C1, Y1 on the right side of the first to fourth colors of the printed matter 13 placed on the color gamut 11 are displayed. Is first imaged and image information is output. Subsequently, the handy camera 16 images the left registration marks B2, M2, C2, Y2 of the first to fourth colors on the left side and outputs the image information by the operation of the operator. The image processing device 30 is, for example, a CPU
It is a (central processing unit), and processes each of the first to fourth image information into control information for controlling the printing machine. More specifically, the image processing apparatus 30 responds to each of the first to fourth image information, calculates the deviation between the registration mark and the respective mark origin, and calculates the deviation and the mark.
(C) The registration shift of each registration mark is calculated based on the distance from the origin, and if the calculated registration shift exceeds a predetermined value 30 'that has been input in advance, the calculated registration shift is reduced. As described above, the control information is given to the printing press to control the printing press, and the next print message for prompting the next printing is sent out. A completion message indicating that the automatic deviation correction is completed is sent. The display device 31 is connected to the image processing device 30 and displays the next print message and the completion message.

[0009]

According to the present invention, even if the registration is correct, the cross-shaped registration marks of different colors do not overlap each other, and therefore the registration can be automatically adjusted.

[Brief description of drawings]

FIG. 1 is a perspective view showing a schematic configuration of a color booth used in an automatic registration device for printed matter according to an embodiment of the present invention.

FIG. 2 is a plan view showing a part of a printed matter for explaining a cross-shaped registration mark printed on the printed matter of FIG. 1;

3 is a plan view showing a part of a printed matter for explaining a cross-shaped registration mark printed on the printed matter of FIG. 1. FIG.

4 is a perspective view showing a schematic structure of a handy camera 16 of FIG.

5 is a block diagram showing a main part of the automatic registration device in FIG. 1. FIG.

[Explanation of symbols]

 11 Color Stand 12 Table 13 Printed Image Processing Device 14, 15 Registration Mark 16 Handy Camera 22 Illumination Device 30 Image Processing Device 31 Display Device

Claims (1)

[Claims] 1. A color pedestal for placing a printed matter having a plurality of color registration marks printed by a printing machine,
Image pickup means for picking up the cross-shaped registration marks of the plurality of colors of the printed matter placed on the color table so as to obtain image information representing the registration marks of the plurality of colors, and the printing of the image information. In an automatic registration device for printed matter, including a processing means for processing control information for controlling the machine,
The processing means has mark origins of different positions corresponding to the registration marks of the plurality of colors, and the mark origins of the registration marks of the plurality of colors are responsive to the image information. Deviation is calculated, and the registration deviation of each registration mark is calculated based on the distance between this deviation and the mark origin. If the calculated registration deviation exceeds a predetermined value input in advance, The control information is given to the printing press so as to reduce the calculated misregistration, the printing press is controlled, and the next print message that prompts the next printing is sent, and the calculated misregistration is the predetermined amount. An automatic registration device for printed matter, which sends a completion message indicating that the automatic registration correction is completed if the value is less than the value.