JPS6388438U

JPS6388438U -

Info

Publication number: JPS6388438U
Application number: JP18425286U
Authority: JP
Priority date: 1986-11-29
Filing date: 1986-11-29
Publication date: 1988-06-08

Description

[Brief explanation of drawings]

第１図は本考案による多色印刷機用見当制御装
置の一実施例の概略図、第２図はスタートマーク
と十字トンボの関係を示す模式図、第３図は見当
制御回路の一実施例を示すブロツクダイヤグラム
、第４図は十字トンボの一実施例を示す模式図、
第５図は印刷後の十字トンボの状態を示す模式図
、第６図、第７図は画像信号の状態を示す模式図
、第８図はＣＰＵにおける処理のフローチヤート
である。４６…ストロボ光源、５０…テレビカメラ、１
００…Ａ／Ｄコンバータ、６４…十字トンボ、１
５０…スレツシユホールド回路、１７０…ＣＰＵ
。 Fig. 1 is a schematic diagram of an embodiment of a register control device for a multicolor printing press according to the present invention, Fig. 2 is a schematic diagram showing the relationship between a start mark and a cross register mark, and Fig. 3 is an embodiment of a register control circuit. 4 is a schematic diagram showing an example of a cross dragonfly,
FIG. 5 is a schematic diagram showing the state of cross register marks after printing, FIGS. 6 and 7 are schematic diagrams showing the state of image signals, and FIG. 8 is a flowchart of processing in the CPU. 46...Strobe light source, 50...TV camera, 1
00...A/D converter, 64...Cross mark, 1
50...Threshold hold circuit, 170...CPU
.

Claims

[Claims for Utility Model Registration] (1) The amount of misregistration and misregistration correction direction of other colors with respect to the standard color are detected for each color, and based on the detection results, the plate cylinder of each color is moved to match the standard color. In a register control device for a multi-color printing press that matches the register of all colors by eliminating misregistration of the image, an input means for inputting an image of cross register marks to be printed with a pattern with different signal levels for each color; The input means consists of a strobe light source that illuminates the cross register mark and a television camera that captures the signal, and includes a misregistration amount calculation means that calculates the amount of misregistration from the change point of the input signal level, and a misregistration amount calculation means that calculates the amount of misregistration from the change point of the input signal level. 1. A register control device for a multi-color printing press, comprising a register correction direction determining means for determining a positional relationship based on a signal level and determining a register correction direction. (2) The register control device for a multicolor printing press according to item 1 of the scope of utility model registration, wherein the input means is a strobe light source and a television camera.