JPS6184250A - Registering of multicolor press - Google Patents

Abstract

PURPOSE:To drastically reduce working hours in registering and paper spoilage by displaying enlarged patterns on a display unit, and by inputting position coordinates of respective colors of the patterns of certain elements, and by calculating the extent of adjusting the position of the plate cylinder through calculation of registering errors among the respective colors. CONSTITUTION:Patterns of prints are enlarged and displayed on a display unit 4. Pertaining to the certain elements of the patterns, etc. of which registering marks etc. which can disclose registering errors of the enlarged display image, position coordinates of the patterns of the respective colors are input by an coordinate input means such as a joystick 8 which moves a cruciform cursor given by a personal computer 6 through a superimposer 5, a manipulation panel 9, etc. Thus, by the respective color position coordinates and the image enlargement ratio the volumes of registering errors among differ ent colors are calculated, and based on the above volumes of the registering errors the extent of position adjustment of the plate cylinder is calculated. Corresponding to the above calculation results, the personal computer 6, through an interface 10, actuates a motor 11 by a motor driving circuit 11 and registering of the press is carried out.

Description

[Detailed description of the invention]

[Technical Field] The present invention relates to a method for registering a multicolor printing press. [Problem with back ■ technology] Is λ-ba A no 1? In the case of a printing press, the printing plate with a pattern etc. formed on the plate cylinder is wound (J1 in 1: the in 1 stored between the bones is printed via the inni 1 [-1-A group). Transfer the ink to a printing plate and press the ink transferred to the printing plate (1st plate).
(Transfer to the rotating blanket cylinder I cylinder (rubber cylinder), and print by passing the printing paper between this blanket cylinder and the impression cylinder.

[Ma-1 version +
h, Planckz] ~ le 1 and pressure 1 (4) for each color are arranged in a knitted manner, the color-printed pano printing paper is passed through the second color printing unit, and then the second EQ Printing is completed by passing the printing paper through each nit in sequence. (printing where the printing plate is not in the proper position and is distorted) The printed matter is twisted in the vertical direction (the running direction of the printing paper), on the left and right side, or a combination of these. This results in a directional registration error.Conventionally, an operator performs a test print, observes the printed material with a looper, etc., and visually measures the -Cregistration error ω.
Also, the position of the plate lTi1 is adjusted according to the measurement results. This process is repeated until the registration error disappears. However, starting with the 4th machine, this method required the operator to be highly skilled, as the operator had to measure the amount of registration error based on the grain order and adjust the plate cylinder position based on this measurement result, and the measurement error was large. Repeat the trial and error test until the error disappears.
From a large amount <'r ll:' + between and 1 [1 paper is spent,. [Objective of the Invention] The present invention was made by taking into consideration a series of fish, and it is possible to accurately measure the amount of registration error on printed matter by performing simple operations, and automatically print according to this measurement result. The purpose is to understand how to register a machine. [Summary of the Invention] In order to achieve this object, in the present invention, a picture of a printed matter is displayed in one size on the display F-, and a coordinate input means is used to input a coordinate input means for a predetermined element in the enlarged display image. Input 1-) to the lying rate of the input PI' marks and images; calculate the 1 difference FQj in the registration between each color, and calculate this registration error Mett on April 4th edition 11i. (*Calculate the eyebrow adjustment m1), and according to the result of this calculation, perform the registration l of the printing press. [Embodiments] Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows an example of the configuration for the present invention 4-actual Ml + 'J, and in the same figure, CI LL 'i ---
'f le, and in this ruble 10, the printed matter to be measured
``Rikare, please transfer the specified part of this printed material
Magnifying lens 2 magnifies the image to color video camera A and camera 3. Photoelectrically converts the image and displays it on color CRT 41 as an image magnified several tens of times through super invoice amount P5. 1. Mark (l1ia shadow Lee of 111 things
As for the base part, it is good to have a picture that shows the part where the misplacement 41 (, l) is clearly visible, so that you can see the misplacement of the song. An image, such as a -1-shaped cursor, which is given to the parts pull Ziln picoater 6h via the superimbo 1r5, is superimposed on the picture of the stamp 11 displayed on the display 4. This -1-shaped cursor is connected to the personal [Person]-Taro through the interface 7! It is moved using the joystick 8. Input commands are input using the operation panel 9 on which the cursor is operated by the controller 8. Operation panel 9-
The input command buttons for 1- are "Top and bottom", "Left and right", and "Front".
, "Ura-1,""Operation","Mission","Kaku", l-13j,
rcJ, ``Ml, r Y, 1, [Needle 1. Input J to the camera 3, input the pattern, f, operate the joystick 8 to the position of the 4 soil pattern, move the sol, and press the operation panel 9. 1'1 coordinate input is personal]
The register error, which is calculated by Taro, is further calculated into the plate cylinder (f/mounting correction amount) and is applied to the printer drive circuit 11 via the interface 10, and the register error is calculated by Taro. It operates and the plate cylinder position is adjusted. Figure 2 shows the connection relationship with each plate cylinder such as dryer N4.
) is C. One printing" - one piece 1 - is pressed into contact with Dobe blank 1 flea 120 and lower blank pieces 1 to II: i 21
, the J Go part is composed of the Dobe plate cylinder 22 which is in pressure contact with the J run knots 1 to 20, and the lower plate cylinder 23 which is in contact with the lower Planchera 1 to 1 cylinder 21, respectively. Attached to the trunk shaft of t1
By meshing a, 22a, and 23a, each cylinder rotates synchronously. Also,
T-buran) 1 j-IDI 21 axis 24 is umbrella south middle school 2
It is connected to a driving shaft 30 which is rotated by a drive motor 29 by 3J and C through a helical gear 27 and 28. ;1-1ko, 1 part version) On axis 31 of 122 is Heaven Il! !
An error adjustment L-taper 32, a left-right error adjuster 33, and a twist mt A twist error adjustment motor 38 is connected. The position of the plate cylinder is automatically corrected by directing the output of the respective motor drive circuit 11 (FIG. 1) to each motor incorporated in the mounter. Figures 3 a) to e) show the images appearing on the t-16 display 4'' in Figure 11], so Figure 3 a) is the mark (111) on the printed matter, which is called a register mark. The misregistration display is blank, cyan, magenta, yellow,
Marks 1'') for each of the four colors of black are placed on both the driving side and the operating side of the plate cylinder. Figure b) is an example in which an appropriate part of the C pattern is used instead of the registration mark, and it is best to use the J and 13 shown in the figure to clearly see the deviations and Q combinations of the patterns of each color. Figure C) shows a cross-shaped cursor 111 that is displayed superimposed on the picture shown in Figure a) and Figure b). 8's operation f'1", on the screen of Reso-Spray 4.
Can move to any desired position. (1) in the same figure shows the cursor ((l
I'll put it on a stand! It shows the point of η-power symbol -1, and there are two types. Part 1 is the input for complementing the vertical and horizontal directions on the CII T screen. When printing a printed matter on a camera, the worker places the printed matter on the table 11-, so the ground plane of the printed matter is the coordinate of the CRT, I--
-ii I want to do it. cr <'rDisplay the 2HtW line in the vertical/no1-right direction on screen-1, and add 1 for each color to this.
-If you put the back 1-) of the print on t;, <r, L and the printed matter from 1 to 1], the result will always be 110. However, the side C of l' + dumb fI is difficult. Shinokogatsu η, printed matter -7-1 le 1 (
52 appropriate 1,1 it 1~l,, ”(Mobuff 1n (J
Complement the coordinates from flM. l(, exists. In other words, cr
For example, enter 13.1=1,
If the ladle is towards the earth, press the earth button, then press the left or right button if it is towards the earth. This (J, 1 - automatically corrects the direction of the earth/no I)
iru. Next, the input of p)')1=) is the input of each color picture position. The shape of the mark I~ is generally a 1-character shape, and by inputting the intersection of this 1- character, 1J, Su, Tenchi, No ``(1'/riPIF mark in the right IJ direction is the same mouth ``1''). Input 1+ to 1+. I11 is the horizontal line 3 other than the above-mentioned -1 character shape.
1: There is (1 to 1 with only a single straight line). In this case, only the position coordinates in the direction 1゛)i)1-'') of the earth/no1 to the right are input.For other input methods, input any one point on the horizontal or vertical line t:h If so, the position coordinates are determined using the coordinate system determined by the above-mentioned corrections in the vertical and horizontal directions.However, in this case, the stem is calculated only for the vertical direction or the 1 right. [Only left and right operation tl-l buttons are installed. Figure e) shows another example of the input method for vertical or IJ, '7i-right direction. This is set in advance so that the top direction of the 1 to 10 marks is always upward on the display 10, and the 2 points input on the display 10 are set so that the dip 1 noise is downward and the formation angle is 1. Illustration 0
If it is <4Fi' or less, it is recognized that the vertical input is performed, and if it is 45 degrees or more t'r, as shown in φ, it is recognized that the left/right input has been performed. It is designed to be activated with a single button. Figure f) explains the input of the 8-back common outer mark. On offset rotary presses, register marks are placed at approximately the same position on the front and back sides of the printing press,
” Now, place 11 holes 114 in the vicinity of register 1 to register, and use these 11 holes 11/l to input register 1" for each of the front and tip. This is the register mark position; similar to the N coordinate system, the operation panel 9
using 'C? '7', '+U. Based on this button hole I ψ / F, align the front and back sides IL / i < C cut 1 ° knead input (As explained in 'Organizing the work 1), I) Earth IJ direction or No I Input for complement 1F in the right direction: Ji = + Isdic 8'', place the cursor of Rezo Ispray 40 on any of the register dragonfly's water SP, ii) or two points on the vertical line in sequence, and move Press [Top, Bottom, 1 or [Left/Right 1] on panel 9. ii) Inputting the coordinates of each color picture position Move the cursor of the display 1 noise 4-1- to each color registration mark using the joystick 8, and press 1 on the control panel 9] or [K1, ``Table 1'',;tro'', [B-1, [C1, [N
4], [Press either Y-1. 111) Human power for front and back common coordinates: Use the stick 8 to move the cursor on the display 4 to the hole near the 1- button U, and press ↑11 on the operation panel 9. iv) Press the calculation button. The calculation is started according to the calculation details described later. Figures 4 and 5 (, 1, Figure 5 (a) shows the calculation operation of the Personal Nippy Coke 6 in Figure 1, and Figure 4 shows the calculation steps 1:). to (f)
b is a diagram illustrating the calculation contents. In this embodiment, the plate cylinder correction m is directly calculated without calculating the amount of registration error. The calculation steps are: press the calculation button (S, correct -1>' in the vertical (left and right) direction (S-2), match the office mark on the front and back of the drive side (S-3), twist version ■1 corrected m calculation (S-4) ), top, bottom, left and right cylinder correction calculation (S-5) and output of a signal to the printing press registration device motor drive circuit.Thus, the calculation is performed in four steps, S-2 to S-5. S2 to S-5 will be explained one by one. 1, 1) Top/bottom () r right) 1 direction correction (Fig. 4, 5-2) First, the registration mark position coordinate ( The coordinates in FIG. 5(a) are converted into coordinates based on the vertical and horizontal directions based on the vertical and horizontal direction information inputted in advance (FIG. 5(b)). In FIG. 5(a), (a, b),
(c, d) are 1- of W between the X and y coordinates of display I-
The coordinates are (a', t)' in Figure 5 ([)).
), (cl, dl) are human-powered.
! ! 1JIt'll group t([, x / , y /
Let the coordinate τ゛d of the coordinate system C be. This operation is applied to one printed sheet (on the drive side, on the operating side, on the front side, on the front side, and on the back side).
For all points C (row I). 2) Coordination of the front and back coordinate systems (Fig. 4, 5-3) In order to avoid all 1-marks on the front and back, first change the coordinate systems of the front and back. Coordinate transformation is performed so that the values are the same. Here, as an example, the vertical direction is already on the y' axis.
Figure 5 (0) and (f) show each state of the table with row <i.
Shown below. In these diagrams - C (o, p) Onibi (q,
r) is the coordinate and * is one hole. Matching work (j, Fig. 5 < e >t; - at origin 0
Move the origin 0 to the hole 1 (s, t,) in the same figure (f), and move the
Change the tsuba code of coordinates only. If we set (0, rl) → (δ-(J, p-v) (Q, r)-> (S-Q, r'-t), we can place the 1 to 3 symbols on the front and back sides on the same coordinates. 3) Calculation of twist and plate cylinder correction amount (Fig. 4, 5-1 above)
, 2), the vertical ()i right) direction is corrected,
Furthermore, the front and back sides are the same, and the coordinates converted to the coordinate system are used to perform four twists. Figures 5 (C) and (d) are the operating side on the front side;
This is an example of a registration mark on the drive side. In this case, B (shade) is C (
Ai) versus l on the heaven side n((j-1)-(f-h))x
m However, m is twisted by a constant specific to the printing press. In this way, the amount of twisting is determined for each color based on a certain color, ie C (eye), and the twisting distance of each color is determined by subtracting the average value of the amount of twisting from the twisting distance of each color. The plate cylinder correction amount in the twisting direction is determined from the twisting shift fJIm and the enlargement ratio. Here, the twisting river depends on the paper width! ! ? , it will be a small amount, and when the above tl calculation is performed using the standard paper width, it will be an accurate twisted product, but if it is used as a sea urchin, an error will occur where the paper width changes. On the other hand, let t be the paper width: 1 - etc. τ・
It would be nice if you could change the constant v1m by inputting it or by preparing several paper widths in advance and inputting them using the paper width selection key. 4) Modification of the vertical and horizontal cylinder iser device f- (Fig. M4, S-4) -121) and step A1 of 2), the registration mark positions on the front and back sides of the drive side and operation side have already been set. Since they are expressed in the same coordinate system, all that is left is to use I11@ calculations to overlap these 1-emboss! The amount of movement in the left and right direction is calculated. To calculate this distance between movements, - As an example, the amount of movement is calculated by matching the average position of all the dragonflies in the vertical and horizontal directions, and calculating the amount of movement. - The average position may be determined by excluding the position. From this distance of movement and magnification, correction and hanging of the plate t1 position in the vertical direction h-right direction is determined. (Other Modifications of A) In the above embodiments, the A-noset printing press was explained, but the present invention can be applied to gravure printing presses, letterpress printing presses, and flexible printing presses. [Effects of the Invention] As described above, the present invention enlarges and displays the pattern of a printed matter on a display, inputs the i☆oka information of each color pattern into the coordinate input means for a predetermined element in this enlarged display image, and calculates each color position. The amount of registration error between each color is determined based on the coordinates and the magnification rate of the image, and based on this amount of registration error, the plate cylinder 1)'L is determined.
1111i1 according to the calculation result.
1 machine registration 1! Because the process is done in a simple manner that does not require any skill, the position of the plate cylinder is automatically adjusted, and registration can be achieved in one trial printing of 17 times, resulting in registration 1! Work time and paper waste can be significantly reduced.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of an example of a configuration for carrying out the present invention, and FIG. 2 is an explanatory diagram showing the connection relationship between the motor and the plate cylinder of the printing Ninonite in which the adjustment operation is performed by the configuration of FIG. 1. , Figures 3(a) to ('') are the 47/I construction example (Go1) in Figure 1.
．． - Jru Display - Both 1L (!7i example)
Figure 4: ;1 The configuration example in Figure 1 includes J3 (-JRU11P-
1) One of the li arithmetic operations ``l-chit・-1～, 1st
Figures (2) to (1) are explanatory diagrams of the contents of each step in Figure 1. , 2...Lens system, 3...Camera, 4...Display, 5)...Super import instep, 6...Parts true 1 pump coater, 7,10
・・・interface, 8...ji1 rights, 9...operation panel, 20...1° plank
"L21...INl to lower planks 1, 22...
Number of soil parts Ill, 23... - Number of F parts ll1i, 25.2
6...Bevel gear, 29...Drive 1-event, 32°36.
・Earth error adjustment - evening, 33.37...Left and right error adjustment - tail, 3/1.38...Twist Jl difference adjustment t - evening. Applicant's agent Kiyoshi Inomata Figure 2 Figure 3

Claims (1)

[Claims] The pattern of the printed matter is enlarged and displayed on the display, and the positional coordinates of each color pattern are inputted using the coordinate input means for a predetermined element in the enlarged display image, and the amount of registration error between each color is calculated based on the positional coordinates of each color and the magnification rate of the image. A method for registering a multi-color printing press, in which a plate cylinder position adjustment amount is calculated based on the amount of registration error, and the printing press is registered according to the result of this calculation.