JPS58139142A - One liquid type etching device for gravure plate making - Google Patents

Abstract

PURPOSE:To enable automatic etching of gravure plate to be stably executed without depending on operator's perception, by collecting data on etching conditions obtained by preexamination of a resist, i.e. a total etching time, rotation speed of a cylinder, and each etching time distributed corresponding to the rotation speed. CONSTITUTION:A resist 10 is attached closely to the copper layer 102 of the surface of a gravure cylinder, the image to be printed is formed by exposure and development on the resist 101, and a gradation scale for test is formed as each gradation part A-D. A mumber of pulses during a time required from dropping a test soln. on the resist 101 to penetration of the soln. to a predetermined depth is measured, etching conditions are obtained by calculation of a main device connected through a measuring tool 100 and a lead wire 110, these data are fed from an input device, and an etching process is controlled by comparing them with a time signal and a rotation speed signal formed on the basis of the clock.

Description

[Detailed description of the invention]

The present invention relates to a fake Ik box in gravure plate making, and in particular, the gravure cylinder/face VM7I4 is coated with corrosive liquid once.
This invention relates to a negative one-component variable rotational speed X* device. Conventionally, the management of scrap removal in this type of corrosive equipment K is carried out by the worker WJK, that is, the operator controls the wire removal time and the gravure cylinder after visually observing the degree of g★ penetration of the resist part of the gravure cylinder. The rotation speed χ is controlled by electromagnetically detecting the cell depth V at two points, the darkest part of the gravure printing plate during corrosion and another desired part, and the cell depth of the desired part is Every time the depth matches the set value, the depth of the deepest part is measured, and if the depth is larger than the specified value, the rotation speed is decreased, and if it is smaller, the rotation speed is increased to adjust the corrosion TV.Feedback control It depends on the type of device. However, the former method must depend on the skill level of the operator and human intuition, so there are drawbacks such as the printing plate being unstable after corrosion, and the latter method only has a cell depth of 2 points. Since it is not controlled, it cannot be detected whether the cell depth of the middle 11 portion matches the expected cell depth curve q) until the corrosion is completed. Since it is a basic [feed control], it requires a cell S degree or volume detection sensor and an arithmetic and control device, and corrosion is very expensive and complicated.
It has the disadvantage of being a thing. The present invention has been made in view of the above points, and by being given the corrosion condition calculation result from the resist inspection on the gravure cylinder, the gravure printing plate (F) is automatically corroded based on the calculation result. The purpose is to provide. To achieve this objective, the present invention provides an input device into which data regarding the corrosion conditions, namely the total corrosion time, the rotational speed of the cylinder and the distribution time of this rotational speed are input, and the rotation of the cylinder based on the data from this input device. This device is equipped with a control device and a device for supplying syringe/KX negative liquid, and is capable of automatically corroding gravure printing plates using a preset method. An embodiment of the present invention will be described below with reference to the accompanying drawings. Figure 1 shows the overall appearance of the device according to the present invention, in which 1 is a gravure cylinder with a part of its circumference shaped like a bucket. The corrosive liquid 4 comes into contact with the supply roller 3 which has been cut into the corrosive tank 2.
is given. The cylinder/1 has its rotating shaft supported by a bearing 5, and is rotated by a drive (not shown). It controls the lifting and lowering, circulation of corrosive liquid, etc.
If you want to rotate at a constant speed, use the operation panel 7.

[Can also be operated manually. Figure 2 shows the circular structure of the device in Figure 1, which is a gravure cylinder! is disposed above the center of the corrosive tank 2 while being supported by a bearing 5, and is in line contact with the supply roller 3 immersed in the corrosive liquid 4, except for the upper part. The supply roller 3 is preferably made of soft porcelain and coated with molton, and when it rotates in contact with the gravure cylinder 1, the corrosive liquid 4v/v is applied.
Supply to rapier cylinder l. The corrosive tank 2 is constructed such that it can be moved up and down together with the supply roller 3 by an air cylinder 8, for example, and the corrosive liquid 4 is supplied from the tank 10 by a pump 9 connected via a hose 10a4, and then returned to the tank IOK. Here, return the corrosive liquid to the 4t tank 10 in the corrosive tank 2.
There are two LW11s, one of which is the oat tank 10KN for the oat flow exceeding the predetermined liquid level in the w11 negative tank 2.
4"f channel, and the other is a channel for returning all the corrosive liquid in the 14 serving side 2 to tank 10 when the 1g food device is stopped; this latter channel is not normally closed. Fig. 3 shows a detailed AVC from the corrosion condition input panel 61' in the apparatus K shown in Fig. 1. The progress display section 6 has four LED display sections IJD 1 to L.
ED4V, they are corrosion period, distribution time 1 rotation speed,
In addition, the preset section 6bK has a digital switch DB for setting the total time and for setting the distribution time per rotation speed for each corrosion period.
DB2. D8. A corrosion stage is provided and the corrosion period is indicated on the nameplate. The /tan operation section 6CK is provided with a start-tongue 8W mechanism and an assembly tongue SW for raising the corrosion tank. Thereby, the degree of progress of the corrosion process can be easily grasped by comparing the display contents of the progress display section 6b with t. FIG. 4 shows the operation panel 7t in the device of FIG. 1 in more detail. This operation panel is provided for manual operation and is not directly related to the device of the present invention, but it is shown in FIG. Start button sw1. provided on the control/operation section 6C on the corrosion condition input panel 6. This is relevant in explaining Assitan 8W2. This operation panel 7 is used for starting and stopping cylinder rotation, and for raising and lowering the corrosion tank. A total of 61 @I for starting and stopping 4 rings of corrosive liquid
There is a tongue. Figure 3 shows the functions of the tongue for starting the rotation of the cylinder and the tongue for starting the corrosive liquid circulation. As an example, a button sw2 shown in FIG. 3 is provided. FIG. 5 shows the circuit configuration of the device of the present invention. This circuit is based on the striped eclipse conditions shown in Fig. 3, the inputs from the digital switch D8□m D8z t''a on the manual panel 6vC and the zetan switches 8W, , 8W, K, and the gravure cylinder/l from the detector. Based on the contact input with Le3, a series of controls are performed, namely, rotation control of the motor for driving the I-rapi 1 cylinder, opening/closing control of the solenoid valve that prevents the corrosive liquid from dropping from the tank to the tank, and pumping of the corrosive liquid from the tank to the tank. 4 pump drive control for lifting and lowering the corrosion tank f)
It controls the drive of the air cylinder and displays the required information on the displays IJD to LE04. In this circuit, the output of the clock pulse generator 11 is input to an up counter 12 for measuring the rate time.
Then, it is given to the up counter 16 for total time measurement, and compared with the serial reset value by the digital switches D8□ and D82 by the comparators 13 and 17. When they match, the corrosion period is changed or the operation is stopped, and the minute Ml! I
+18'4 clock A rus multiplier 20! or 2
2, the preset value and multiplication by the digital switch Da are combined to form a rotation signal, which is applied to the motor via the dry arm 124V. Digiswitches Da8 and D8.
is the set value for each of the decay periods of the manufactor, and one waste selection among these set values is determined by the multiplexer 15.
It is done by Ma or 21. The equipment is started by operating the start setter SW 2, which rotates the motor (gravure cylinder) and circulates the corrosive liquid.The septic tank is also operated by operating the aragumitan SW2, and then the detector The corrosion process starts with the output of The progress status of the corrosion process is indicated by the LED indicator L on the display section.
Displayed by ED□ to LED4. FIG. 6 is a time chart showing signal waveforms of various parts of the circuit shown in FIG. 5, and the circuit operation will be explained using this time chart. The 1M power of the device is now turned on (power switch sw3)
According to (m3 figure) 6), hillock arm um
ti Kakuro Tsuku Pulse T Hot! 1 through the frequency divider 18 and the frequency divider 18. 24), give 22Vc. In this case, the gravure 7 lindato supply roll 3 (ff11
2) are not in contact with each other, and no signal is given to the receiver 19 from the detector. Therefore, the start select circuit 14 uses the up counter 12
, 16 and the multiplier 22, and the multiplier ' Does not occur. The fs20 starts operating and multiplies the output of the frequency divider 618 and the output of the digital switch DSs and provides the combined output to the dry nozzles 24 via the OR circuit 23. As a result, the motor rotates, and the gravure cylinder 1 (seg*Figure 2) rotates. The cylinder rotation speed at this time is a preset value for the first stage of corrosion. In addition, at the start, Tan S Tsuyu was pressed, and Driver Uta admonished the four players, and the corrosive liquid was released into the corrosion tank 2 (Fig. 1,
(Fig. 2), the s4 negative liquid is also circulated. In this state, press the up button sw and t' to drive the corrosion tank 2 (Figure 81, Figure m2) and the elevating air cylinder/8 (Figure 2) via the dry/gate 27, and the rot*turret rises. When the corrosion tank rises, the supply roll 3 (Fig. m1, Fig. 2) installed in this II negative gravure cylinder
, a start command is sent from the detector to the start select circuit 14 via the receiver 19, and a start command is sent to the multiplier 20K.
An IJ set command is given. As a result, the start select circuit 14 starts the operation of the up counters 12 and 16 to count the clock pulses, and provides one counter 28 VC pulses to the output YLΣD driver 29. up counter 12
, 16 are applied to comparators 13, 17 and LID drivers 30, 31. LED Dryno 929
The output of ~31 is given to the display device LED, ~LED, for display. On the other hand, the start select circuit 14 gives a select signal to the i-multiplexer 15, 21 and digital switch D8.
2. Comparator 13. The signal is supplied to the multiplier 22. From this K, the comparator 13 determines whether or not the count value of the up counter 12 has reached the preset value, and when it has reached the preset value, a start command is issued.
[Go to 911-14 and give power. As a result, the start select circuit 1- again gives a select signal to the multiplexers 15 and 21K, resets the up counter 12, and gives an A pulse to the counter 28, and resets the up counter 16 from the last stop signal of the corrosion process. be done. In this way, the multiplexers 15 and 21 sequentially take out the preset values for the second and subsequent corrosion periods based on the selection signal from the start select circuit 14, so that the comparator 13 can output the serial reset values for each of the 14 corrosion periods and the count value of the counter 12. A match is detected by comparing the two, and the start select circuit 14'4 is further activated to perform wlb. This operation of the comparator 13 adds up the allocation time for each tribute period. Also, the multiplier η, which is also given a signal from the start select circuit 14, is connected to the motor (b) before the corrosion process starts.
The rotation speed is controlled by the row 5 multiplier 20#lc, which controls the motor rotation speed during each corrosion period in the corrosion process.The actual rotation speed of the motor is determined by a rotary encoder/(not shown).
From Resino? 32V to the LED lights 33 for display. In this way, when the striped negative process of each horse negative period is performed and the total corrosion time has passed, the comparator 17 switches the digital switch.
The preset value by ID81 is compared with the count value of the up counter 16, and when they match, the start select circuit 14
．． Dryno? δ, 26, 27 and counter 2
Make 8v ri7t. The start select circuit 14 further resets the jump counters 12, 16 and the multiplier ρ. As a result, the dryer A 24 K is no longer given a rotational speed signal, so the motor stops, and the solenoid valve 12 (Fig. 2) is opened by resetting the dryer no. 9(
(Fig. 2) stops and air cylinder/8 is activated by dry A71.
(Fig. 82) operates, and corrosiveness 2 (Figs. 1 and 2) is controlled to descend. As a result. The supply roll 3 (Figs. 1 and 2) supported by the corrosion tank is engaged with the gravure cylinder/1 (Figs. 1 and 2), and the signals given from the detector to the resins 19 are ,
This returns the device to its initial state. A detection method such as a beam switch, a proximity switch, or an optical solder type may be used as the detector. FIG. 7 shows the overall appearance of an embodiment of the device for calculating the corrosion condition data given to the corrosion condition manual trowel 6 in the device of the present invention.
01 is provided in close contact with copper j#102. Registration) IOIK has a printed and printed image, and the gradation scale 103 for inspection varies from shadow to highlight, for example. Gradation portions B, C, and D are also formed. This device is a measuring part tool (It) for dropping a test liquid in the gradation scale part and grasping its permeation characteristics.
0, an electrical manufacturing main body 200 connected to this tool via a lead wire 110 for calculating corrosion conditions, and a stand 300 capable of accommodating the tool. Rotation speed is variable based on the relationship between the test liquid penetration time and the amount of galvanic corrosion in the cell.
Calculate corrosion conditions for liquid corrosion method. Here, the test liquid is, for example, a conductive solution mainly composed of polyhydric alcohol, which is non-corrosive or slightly corrosive, and has good penetration characteristics against corrosive liquids made of ferric chloride solution. We use methods that demonstrate the correlation between the two and have excellent reproducibility. FIG. 8 shows the circuit configuration of the device shown in FIG. 7. This device includes resist electrodes 130 and 131 that are provided on the gradation steel 103, which is the portion of the resist to be inspected, so as to be brought into contact with the cocoon weight inspection liquid. The cylinder electrode 133 to which the resist It) 1 is in close contact with the steel layer 102 and the clear penetration time similar to the key in the main operation input section of the device main body 200 are erased.
A foot measuring part tool consisting of a key 125, an input instruction key 126 for inputting a display value of the penetration time, and a circuit part for sending out a measurement signal of the penetration characteristics of the test liquid taken out by the two electrodes, and a measuring part tool. and a clock 152 that oscillates a skin clock pulse with a lead 111110, a counter 153 that performs a counting operation, its interface 154, and a CP.
U (mic processor) 250, display section 210 and its interface 211, and numeric keypad 202° ALLCLEAR+ -203%X as an operation input section
*-204, Y? -205° Hatake, b, c keys 206.
8TART--207, RAM key 209m, key scanner 208, random access memory aAIMzst as a storage circuit, non-volatile RjkM220. Read only memory ROM230. Magnetic card output device @ 260 and its interface 261 that can write arithmetic processing results on a magnetic card, printer 240 that prints out and its interface 7x-x24
1, CPU250. Input section 154°208,
Output ffl$ 211, 241, 261, notes! , 1m 2211230 , 251 are composed of a data node 252 and a device main body 200 which are connected to each other by an address/access. This configuration will be explained starting with the two-leg circuit. When the power switch is turned ON, the device becomes ready for measurement, but in this case, the resist electrode 131 is grounded via the resistor R2, so its potential V is 0.
[■], and the threshold voltage C + V, .
) is lower than that. Therefore, comparator 150
The output is @O″″ of 200 million signals, and the clock 1
52 where the corpse J-wave number Nori o Tsukunorusu C
P is blocked by the AND circuit 151, so it is broken) 153
Do not count or count. Next, apply a conductive test liquid to the resist using a swipe.)
When dropped onto the resist electrodes 132 and 131 on the resist electrode 101, the test liquid is conductive and comes into contact with the resist 101 and the resist electrodes 130 and 131, so the power supply t+v starts from the point of dropping. . ) flows through the resistor R1
through resistor R2 and resistor R
1. Therefore, the potential V becomes a divided voltage value of the resistance R and the total resistance value g of the resistances R2 and R8, and this is input to the comparator 150. Since this voltage division value is larger than the threshold level (+V, , ), the output of the comparator 150 becomes cMlt2 [signal @l'', and the clock pulse CP is the AND circuit 1.
51 and is input to the counter 53, and a counting operation is started. Thereafter, as the test liquid gradually penetrates into the resist 101, the potential V gradually decreases, and the thread shield potential V? When it becomes smaller than II, the comparator 150
The output CM of CM becomes 10' again, and the current CP from clock 152 becomes PI! Ill path 15'l is blocked and the operation of counter 5301a is stopped. That is, display 82
10 is a counter 15 that measures the time CP from when the calibration solution is dropped onto the register 101 until the test solution penetrates to a predetermined depth corresponding to the value of the thread shield potential v, 8.
3 counts and connects the CPU via interface 154.
230 to time data and FAM25 on the data bus.
1 and the display interface 211 at the same time.
After that, the penetration time (in seconds) is displayed on the display section 210. This display section 210K displays penetration time & CQItK
If there is no problem, press the input instruction
Press the input instruction X key 204 in the main input section of
The data is stored in the RAM 251 as corrosion condition calculation data. After that, the count value of the counter 153 and the display 11s
The displayed value of 210 is cleared by pressing the CLEAR key -125 on the hand operation section or the clear key on the numeric keypad part 202 of the main operation input section. A, B, C above
, D is carried out sequentially for each stage portion and is imported into the data RAM 251 as data for calculating corrosion conditions.Here, the display section 210 displays the aforementioned calibration solution penetration time in seconds,
Each gradation scale part of the resist 105, II, C, D
Displays the depth of the seven levels. It has a so-called visual check function for input data (and also has a function to display @yr:s'' or @NO to indicate whether corrosion is possible under the corrosion conditions finally calculated by calculation processing. In other words, it also has a function that allows you to check in advance whether the condition of the resist can be controlled by corrosion with a liquid of a predetermined concentration.Next, the main operation input section instructs the main power switch and standby preparation for data input. AU CLEAR key 203 and keys for testing liquid penetration time, setting depth, etc.
02, Furthermore, each part of the resist scale mentioned above,
X key 204 to input and store test liquid penetration times of B, C, and D in the RAM 2510 address. Input and store the cell redundancy R in the corresponding M, B, C, and D register sections at the same address in the RAM 251
key 205 and corrosion setting curve instruction keys a, b
, c 206, arithmetic processing strike; ゛,. 8TART key 207 for instructing start and output. The detailed operation input method for each RAM key to memorize the corrosion construction curve in the address of the non-volatile RAM 2200 corresponding to each key 206 a, b, c will be described in the explanation of the operation using the flowchart described later. The role curve instruction keys a, b, c 20G are for each part of the resist scale of a typical corrosion card, such as m, b, c. The cell power installation depth at D is stored in advance in non-volatile RAM as required, and can be selected with one-touch key operation.The number of b and c keys can be set arbitrarily. It doesn't matter if it's not good. If you don't use the a, b, c keys, use the numeric keypad and Y key to input the cell installation depth. The memory circuit section includes the above-mentioned non-volatile RAM in addition to the RAM 251.
220 and ROM230. Nonvolatile RAM is, for example, N1tron, NC7055, and the above-mentioned corroded card by turning ON the RAM switch 209.
Addresses K of the nonvolatile RAM corresponding to the a, b, and c keys 206 can be stored by using, for example, the numeric keypad and the Y key. -0M23t) K is the arithmetic processing described below.
Comparison test data for 1 hour of immersion between a corrosive liquid of a predetermined concentration and a calibration liquid required for one embedding (see Figure 9), as well as test liquid penetration time for each stage of a large number of gradation scales of resist at various cylinder rotation speeds. I stored a lot of test data (see Figure 10) on the relationship between the corrosion rate of the copper surface and the corrosion rate of the corrosive liquid.
Stored in a format that increases compatibility. If the corrosive liquid is of the same S degree, it is versatile, so create a K ROM for each concentration, and when using a corrosive liquid with a different concentration, replace it as appropriate, or store two or more types of ROM in advance. It is also possible to use different ROM memories that match the concentration of the corrosive liquid used in the changeover switch. However, in that case, corrosive liquid 4
Two or more types of tanks are prepared, and from now on, only the liquid-resistant corrosive liquid will be used for excursions using a predetermined 11 degree corrosive liquid suitable for the corroding resist. In addition, when using this device to manage the corrosion conditions of several or more IX machines, it is sufficient to store the values according to the characteristics of each IX* machine, thereby increasing the functionality of this device. I can do it. As a method of storing each test data in the ROM 230, each test data is stored using an approximate function formula ('t
is the M4 negative liquid penetration time, X is the calibration solution penetration time. (b is a constant determined for each corrosive liquid of a predetermined alt), or the test liquid penetration time X may be set to 0.
It is also possible to make it λ in 5 second increments and save it as a data table. A CPU unit 250 and output units 240 and 26 that perform arithmetic processing
0 and K will be explained in detail with reference to the flowchart of FIG. 11 which shows the operating procedure. First, turn on the power switch and turn on the LLCIJAR.
When the key 203 is pressed (step 81), standby preparation for data input is instructed. Therefore, the measuring section tool 100 is set on the gradation scale section 103 on the resist 101, and the test liquid penetration time X at each predetermined scale stage B, C, and D is checked for a long time (step 82).
This penetration time is digitally displayed on the display section 210, and is read into the RAM 251 one after another by pressing the X key 204 (step 83).
The cell installation depth value y corresponding to 202 is also di-left with the numeric keypad 202, or the cell installation depth value y is 7, b, c 20
6 to select from the non-volatile old M220 and display on the display section 210.
(Step 84) If there is no problem, the cell power setting depth is also stored in the RAM 251 using the Y key 205 (Step S5). In this case, the data input procedure is either from the shadow side or from the highlight side. 1. Always decide whether to set it first, and be sure to input it so that the test liquid penetration time It is also possible to make the inputs alternately associated with each other. When the input by the above key operations is completed, press the 8TART key 207, and the calculation process will be performed according to the calculation hand*VC programmed in the CPU section 250 (step S6). The total corrosion time, corrosion distribution time and rotation period are output by printer 240 and 1111 card output device 26.
Therefore, it is output as 0 (step 87). Regarding the calculation procedure of this operation and theory, an example of the liquid-resistant type square multiplication method for gravure plates will be shown. (1. Figure 12 shows the input floor i!11 parts A, B, C, D.
Test liquid penetration time x1. xm, x, , x,
and set cell depth YA e Y&* 71 e YD
It depicts the relationship between In other words, a T of 5 that satisfies the four plot points A, B, C, and D in Figure 12.
If corrosion is performed under 4* conditions, the cell depth curve as set can be obtained. First, we add the point P where the penetration characteristic -fi34 in Figure 12 intersects with the The corrosive liquid penetration time t per time KE is determined from the stored ROM 230 as illustrated in FIG. 9, and this is calculated as t%.
Determined as corrosion time. The calibration solution penetration time X, of course, may be determined by actually measuring the resist part where y=O, or the point P can be determined by measuring the actual measurement of the calibration solution penetration time It may be calculated as a point where a straight line connecting the points intersects the X-axis. Furthermore, it may be calculated as a point where a tangent at "n*YB" of the curved irises intersects with the X-axis. In this way, the total negative time 1. Once the point B is determined, the next halftone point 1.4CF) is determined as the branching point of the corrosion conditions from the beginning, and the m
The corrosion distribution time and cylinder rotation speed for each period are calculated by dividing it into three periods: 1st period from 1 point to point C, 2nd period from point C to corrosion end point P, and 3rd period from point C to corrosion end point P. be. In this case, any number of intermediate points can be selected as long as it is one or more, but in any case, the corrosion conditions are divided at that point. Now, point B1 point C is the turning point for the corrosion distribution time of each period.
Test liquid penetration time in K! ,,Corrosion liquid penetration time according to XOK1. ．． 1. is calculated from the ROM 230 in which the functional formula shown in FIG. 9 is stored, and the corrosion distribution time for each period can be determined as follows. 1st period (from corrosion start to point B): t1 2nd period (from point B to point C): 1. -1゜Total lfI&*Tension:t On the other hand, the cylinder rotational speed in each period is determined by HA from the 3rd corrosion period to the 2nd period, and backwards from the 1st period at Nakarakunote Il [( First, to determine the cylinder rotational speed in the third period, the steel 1iia corrosion rate]y of the corrosive liquid such as each 7 phosphorus I - rotational speed at the test liquid penetration time x0 at the point CK is determined as shown in Figure 10. ROM in which data is stored in a table format
The corrosion cell depth for each cylinder rotation speed is calculated by multiplying the w4 negative amount per unit actual corrosion time by the actual corrosion * time at one point CK - 1. This value is compared with the setting cell #ffy of point C, and the cylinder rotation speed, for example, R1, which shows the value closest to ya is selected and determined as the cylinder rotation speed of the third period. In addition, here the actual g * time #
. is obtained by subtracting the corrosive liquid penetration time t at point CK from the total corrosion time t2. After reaching fiK. This is the time when the steel surface is actually eclipsed 14 times, that is, the time of the third period. Next, when calculating the cylinder rotation speed of the member @2 period, the ratio of the gi eclipse cell depth in all three corrosion periods is calculated as the 13th period.
In Figure 0, which is schematically represented, the dotted line portion of the copper layer 102 is the corrosion cell depth due to the J14 eclipse conditions in the corrosion 11M1 stage, the tip portion is the corrosion cell depth under the corrosion conditions in the second corrosion stage, and the broken line portion is the corrosion cell depth. The corrosion depths under negative conditions in the third period are shown respectively. In other words, as shown in the figure, the corrosion of the steel layer is the first corrosion.
A total of 3 stages 6 (this is done in stages, but the cell depth of each M14 eclipse is also correlated with each cylinder rotation speed and actual corrosion time. Therefore, As shown in the figure, boundary lines (dotted chain line B) and (B)) are generated between the first period and the second period of U*, and between the second period and @3 period due to changes in the cylinder rotational speed. For example, the test liquid penetration time is between the boundary line (regist part larger than mouth 1), which is affected only by the cylinder rotation speed in the third stage of corrosion, and the test plate penetration time is between the boundaries m (E'') and (A). In the resist area, both the rotation speed of the second period of g eclipse and the rotation speed of the third period of corrosion are affected.Furthermore, in the resist area where the test liquid penetration time is shorter than the boundary line (a), the rotation speed of the first corrosion period is affected. It is affected by the rotation speed, the rotation speed of the second period, and the rotation speed of the 83rd period. Therefore, the J1 foot method of the rotation speed of the second period is the cell setting 41K at point B.
y, to the cell depth according to the rotational speed Ra in the third stage of corrosion (it can be calculated by paying attention to Fig. It corresponds to the corrosion cell depth rxK under corrosion conditions at time o6, and can be found using the TS10 diagram.In other words, from Figure 10, the steel surface metal at the rotation speed R1 at the test liquid penetration time x1 at point B#c is Calculate by calculating the speed data Δyv and multiplying by the actual corrosion time 0°. Let us assume that the subtraction amount at the resist portion of point 1 is Δy,
′ and the new point after subtracting this influence is B′, then 8 constant cells at point 1′ + 11! degrees y, f
can be calculated as ykarasu'=y, -Δy,'. Furthermore, 4yl
indicates the broken 1w portion at point B in FIG. Now, the determination of the cylinder rotation speed in the second period is the same as in the third period, where the test liquid penetration time at point IK is
Obtained from the diagram 0, the point II is determined by the amount of X per unit actual corrosion time.
Calculate the corrosion cell detection degree for each cylinder rotation speed by multiplying by 1 - the actual corrosion time of the second period in K, and use this value and the equation
The calculated set cell depth y,'=y, -Δy1' is compared and examined, and the cylinder rotation speed that shows the value closest to y,1 is selected, and the second period cylinder rotation speed is determined to be, for example, RC. The actual corrosion time # here refers to the time during which the corrosive liquid actually scratches the cylinder steel surface at point B, M4*, from when it reaches the cylinder steel surface at point B until it reaches the cylinder copper surface at point C (
1,-1,) -(1,-1,), that is, the time of the second period (
1, -1,). To calculate the cylinder rotation speed in the first period of debris accumulation after iIk, use the same calculation method as in the second period. From the set depth y of the cell at point A to the rotation speed Ra in the third corrosion period It can be calculated by focusing on the cell depth (@ part of the dot in Figure 13) K obtained by subtracting the cell depth It (the broken line in Figure 13) due to the rotation speed RcK of the second stage of corrosion (the broken line in Figure 13). As in the second period, from #C Figure 10, first multiply the rotational speed [Ra of steel surface corrosion rate data IIC plus negative time - 〇 by the test liquid penetration time X at point M to calculate, for example, Δy, I. Then, by subtracting it from y, we find a new point M', and then multiply the steel surface corrosion rate data at rotational speed Rc by the actual corrosion time - 1 at If we search for a new point, the installed cell depth yX at this point is y:=7.-)y
, I-Δy: Note that No yA' indicates the broken line portion at point M in FIG. 13, and Noah X indicates the solid line portion at point M in FIG. Now, to determine the cylinder rotational speed in the first period, as in the second period, find the steel surface corrosion rate jy of the corrosive liquid for each cylinder rotational speed at the test liquid penetration time X at point M from Fig. 10. Calculate the corrosion cell S degree for each cylinder rotation speed by multiplying the amount of X per corrosion time by the actual corrosion time of the first period at the point - 1, and use this value and the calculated setting cell depth 7:= 71-noy,'-noy: Comparative study 1,
Select the cylinder rotation speed that shows the value closest to yI and set M
The cylinder rotation speed in the first period is determined as, for example, Rb. The corrosion time 0□ here means the period from when the corrosive liquid reaches the cylinder steel surface at point B until it reaches the cylinder steel surface at point B. The time during which the cylinder copper surface is actually corroded (1, -1,) - (1, -1,) In other words, the time during which the corrosive liquid penetrates the resist part at point A is subtracted from the attribute time of the first period. The time is (1, -1,). From the above, the cylinder rotation speed R is calculated as follows: 1st period (from corrosion start to point B): Rb 12th period (from point B to point C): Rc 3rd period (from point C to point P): R1 If the W4 eclipse is carried out in order from the W4 eclipse condition of the 1st period at the corrosion distribution time and cylinder rotation speed, corrosion will occur at each stage of the gradation scale A, B, C, and D according to the depth of the electric cell, which is ideal. Therefore, a corrosion reproduction curve can be obtained. As described above, it is sufficient to calculate the optimum corrosion condition data suitable for the characteristics of the resist and provide it to the input panel 6 of the apparatus of the present invention.
The input may be performed using a digital switch such as the one shown in Figure 3, or may be input using a magnetic card. The example shown in FIG. 14 shows a condition input panel for inputting corrosion condition data using a magnetic card.
6, which serves as a corrosion condition preset section and a processing progress display section.
'Island, -tan operation section 6'b and magnetic card input section 6J
It has C. The corrosion condition preset section 6' has three LID displays 11.
(LleDl~LED,), which correspond to the total corrosion time, the distribution time of each corrosion period, and the rotation speed of each corrosion period, respectively, and display the preset conditions input at the magnetic card input section (Ic). /Tan operation part 6'b is the same as the one button (8W,'#H) for Star F - Tan 8W8.
%v2', sw, and one button 8wl for clearing display and storage conditions are provided. I tongue armor for starting, ′ and I tongue gw for ascending the corrosion tank;
When the corrosive liquid is supplied to the gravure cylinder from the VC and corrosion is started according to the preset conditions, the preset display section 6" will be used to show the processing staff of the corrosion process, and will display the progress status of each leg after that. The rotational speed of the cylinder is automatically controlled while the rotational speed of the cylinder is being controlled. Figure 15 shows the circuit diagram in this case.
This is an embodiment characterized by five rows in (CPU). This circuit includes a magnetic card input device 6'C and a Zetan switch in the corrosion condition input panel 6' of FIG.
Input from c and gravure cylinder 1 from the detector
(Fig. 1, Fig. 2) and supply roll 3 (Fig. 1, Fig. 2)
Based on the contact input, a series of controls are performed, namely, rotation control of the gravure cylinder drive motor, opening/closing control of the ferromagnetic valve for dropping the corrosive liquid from the tank to the tank, and pumping of the corrosive liquid from the tank to the tank. It controls the drive of the /knob, the air cylinder for raising and lowering the corrosion tank, and displays predetermined information on the display LED, '~tEnj. In the case of the circuit configuration shown in Fig. @b, it may be connected online with the preset condition calculation device circuit shown in Fig. 8 via an interface, and automatic presetting may be performed without using the magnetic car P as a recording medium. As described above, the present invention has a device for inputting corrosion conditions, and the data from this input device is compared with a time signal and a rotational speed signal formed based on a clock to control the corrosion process. As a result, the following effects can be achieved. ■ Corrosion work can be carried out under conditions suitable for moth corrosion, so it is possible to obtain cell depths with excellent reproducibility depending on the image gradation on the 6-plate material for graviure printing plates, making it possible to produce stable and high-quality gravure printing plates. . ■ Since it is possible to produce stable and high-quality gravure printing plates, the burden of plate corrections in post-processing is greatly reduced. ■ Only one corrosive liquid of grade S is required, which simplifies the operation of the scrap removal process and the corrosive equipment. Corrosion work can be carried out unattended.

[Brief explanation of drawings]

The first part is an explanatory diagram showing the overall appearance of the device according to the present invention,
Fig. 2 is an explanatory diagram showing the internal structure, Fig. 3 is an explanatory diagram of the corrosion condition input panel in the same device, Fig. 4 is an explanatory diagram of the operation panel in the same device, Fig. 5 is a circuit diagram of the device, Figure 6 is a time chart showing the waveforms of each part of the circuit in Figure 5;
The figure is an explanatory diagram showing the external appearance of the g-negative condition calculation device for obtaining corrosion conditions, the SRS diagram is a circuit diagram of the same calculation device, and Figure 9 is a gravure printing plate that is the basis for calculating corrosion conditions by the same calculation device. A characteristic diagram showing the relationship between the penetration time of the test liquid into the resist and the penetration time of the corrosive liquid. Similarly, Fig. 1θ shows the relationship between the penetration time of the test liquid and the steel surface corrosion rate of the corrosive liquid at each rotation speed of the Dalapia cylinder. Fig. 11 is a 70-chart for explaining the operation of the device; Fig. 13 is a schematic vertical cross-sectional view of the resist and steel layer of the Dalapia plate material, Fig. 14 is the corrosion condition input panel for the same device in the case of magnetic card input, and Fig. 915 is the circuit of the same device in the case of the magnetic card input method. FIG. 2 is a circuit diagram showing the configuration. l... Dalapia Silin/, 2... Corrosion yearning, 3...
Supply p-le, 4...Corrosion liquid, 6...! ! 4 meal condition input board. 6'... Corrosion condition input panel with magnetic card input, 7...
・Operation panel, 8... Air cylinder, 10... Tank, 10b... Electric valve, 100... Side foot tool, 1o1... Gravure printing plate resist, 103... Gradation scale , 200... Calculation device main body, 300...
・Tool stand. Kiyoshi Inomata, representative of Ipeng: ,
l,,j Figure 3Figure 9Diagram between ridge and axillary penetration λ Horse10FigureC Clearance between ridge and axillary penetration χFigure 11

Claims (1)

[Claims] 1. An input device for inputting data regarding the total corrosion time of the corrosion process in gravure plate making, the distribution time of each corrosion period constituting this total corrosion time, and the rotation speed of the gravure cylinder; A first method that counts clock pulses as the corrosion process progresses, generates an output every time it matches the data from the input device, and calculates the total corrosion time of the process and the distribution time of the valley corrosion period Y mJ fj4.
A one-component type W4 food device for gravure plate making, characterized in that it comprises a second device for controlling the rotational speed t@ of the Dalapia cylinder according to data from the input device. 2. The input data in the device f#c described in the first product range of fF and Ura-gyu is stored in advance in the gravure printing plate registry 14I.
In gravure plate making, the total corrosion time, distribution time, cylinder rotation speed, and cylinder rotation speed that meet the properties other than those listed above are calculated based on the test results.
A one-liquid m waste eating device. 3. Patent Xf! *In the device described in item 1. Previous IC! The first and second devices are Gravure Syrin/K. A one-component waste eating device for gravure plate making that starts when a corrosive liquid is supplied. 4.Special IW-Claims 1st present @Q) In the device,
The liquid resistance m in gravure plate making is such that the '@l and the second device stop operating at the end of the total corrosion time.
Corrosion equipment.