JP4372808B2 - Ink supply device for printing press - Google Patents

Description

  The present invention relates to an ink supply device for a printing press. Specifically, the ink for a printing press has a control device that controls the movement of the ink calling roller that moves between the fountain roller and the ink roller, and can prevent the occurrence of printing unevenness without using a complicated device. It relates to a supply device.

  An ink supply device of a printing machine that drives a plate cylinder and a blanket cylinder that prints on one side of continuous paper by one motor and a plate cylinder and a blanket cylinder that prints on the other side corresponds to each plate cylinder. Each set has an ink storage section, a fountain roller, an ink calling roller, an ink roller, a group of ink rollers and the like that are usually provided in two sets in two upper and lower stages, and each fountain roller is configured to be driven independently. The ink supply device of the printing press having such a configuration supplies the ink stored in the ink fountain of the ink storage unit to the peripheral surface of the fountain roller through the gap between the ink key and the fountain roller by the rotation of the driven fountain roller. Is done. The ink supplied to the peripheral surface of the fountain roller is controlled by a cam that rotates in synchronization with the fountain roller, passes through an ink calling roller that periodically moves between the fountain roller and the ink roller, and then from the fountain roller. Transferred to the ink roller. The ink on the peripheral surface of the ink roller is supplied to the printing plate on the plate cylinder through the ink roller group.

  The ink calling roller is a fountain roller having a relatively low peripheral speed because it is an ink supply source, and the peripheral speed of the printing plate surface on the plate cylinder is the same as supplying ink continuously to the printing plate through the ink roller group. The ink roller, which has a relatively high peripheral speed, moves between two rollers having a large peripheral speed difference and is in contact with each other. Further, the ink recalling roller obtains a desired nip width set in advance between the rollers, and rotates with each of the contacting rollers. Therefore, the ink-calling roller that is in contact with the fountain roller at the desired nip width during the printing operation and is rotating at the same peripheral speed as the peripheral speed of the fountain roller is separated from the fountain roller and has the same high speed as the plate surface on the plate cylinder. When the ink roller that is rotating at high speed comes into contact with the ink roller and obtains the desired nip width at once, and immediately starts rotating at the same peripheral speed as the peripheral speed of the ink roller, the ink roller accelerates the ink calling roller at once. As a result, a sudden torque fluctuation occurs in the ink roller.

  The torque fluctuation of the ink roller is further transmitted to the plate cylinder and the blanket cylinder through the ink roller group located downstream of the ink roller, and further to the motor that drives the plate cylinder and the blanket cylinder, and the load of the motor varies. In the case of a printing machine that drives two sets of plate cylinders and blanket cylinders (hereinafter referred to as the upper and lower stages) by a single motor, the contact between the ink calling roller and the ink roller provided in the upper and lower stages respectively occurs. When it is performed continuously in the upper and lower stages within a short time, or in the worst case at the same time, the fluctuation of the load on the motor that is one drive source becomes very large, and the rotation of the motor is irregular As a result, shading unevenness appears on the printed surface, which adversely affects the printed paper surface (Prior Art 1).

  In the ink supply apparatus as the prior art 1, the upper and lower ink calling rollers move at the mutual movement timing after one-side printing is performed by stopping one of the upper and lower stages and then printing both upper and lower stages. When performing double-sided printing, the timing of contact between the ink calling roller and the ink roller approaches in the upper and lower stages, and in the worst case, they become the same at the same time, resulting in shading unevenness on the printed surface. Each time this phenomenon occurs, time-consuming and complicated setting work must be performed to adjust the mutual movement timing so as not to cause shading unevenness on the printing surface, but this work is very troublesome and There were problems that required time and skill of workers.

  As a known technique for solving such a problem, Japanese Patent Application Laid-Open No. 11-77975 (conventional technique 2) discloses a “driving roller driving device in a printing press”. Prior art 2 is shown in FIG. 5 as an explanatory diagram of the present invention, and will be described based on this. The following terms in parentheses are technical terms and symbols described in Prior Art 2. In the prior art 2, the printing press 100 includes a blanket cylinder 92, a plate cylinder 93, and an ink supply device 101 in the upper and lower stages with the web 91 interposed therebetween (the upper stage is not shown). The ink supply device 101 includes a motor 102 (servo motor 17) for rotationally driving an ink call roller 41 (ink transfer roller 60 '), and an ink call roller 41 (ink transfer roller 60') as a fountain roller 31 (ink discharge roller). 55) and the ink roller 51 (ink kneading roller 59), the air cylinder 103 (air cylinder 27) for controlling the reciprocating movement, the detecting means for detecting the rotation of the plate cylinder 93 (plate cylinder rotation sensor 19), ink Detection means for detecting the number of revolutions of the ink calling roller 41 (ink transfer roller 60 ') which is the feedback encoder 18 that feeds back the rotation of the motor 102 (servo motor 17) that drives the calling roller 41 (ink transfer roller 60'). And fountain roller 31 Detection means (rotation sensors 20A, 20B) for detecting the rotation speed of the discharge roller 55), detection means (peripheral speed switching position detection means 21A, 21B) for detecting the upper and lower peripheral speed switching positions of the ink calling roller 41, and The motor 102 (servo motor 17) for driving the ink calling roller 41 (ink transfer roller 60 ') is controlled based on the output signals of these detection means (control means 20).

The ink calling roller 41 (ink transfer roller 60 ′) of the ink supply device 101 of the printer of the conventional technique 2 is controlled by the air cylinder 93 to reciprocate between the fountain roller 31 and the ink roller 51, and is driven to rotate by the motor 102. Has been. And the means which makes the peripheral speed of this ink calling roller 41 the same as the peripheral speed of each roller at the time of the contact start of the fountain roller 31 and the ink roller 51 by each detection means and control means is disclosed.
Japanese Patent Laid-Open No. 11-77975 (Prior Art 2)

  However, the “means for changing the peripheral speed of the ink recalling roller” disclosed in the above-described prior art 2 includes “means for rotationally driving the ink recalling roller”, “ink recalling roller, fountain roller, and ink roller” Detection means for individually detecting the number of rotations of each of these, "peripheral speed switching position detection means for detecting the position for switching the peripheral speed of the ink call roller", and "peripheral speed of the ink call roller in conjunction with these means" A large number of complex devices and controls are required, "control means for controlling the rotation of the means for changing the speed". Therefore, there are a problem that the probability of failure of these devices increases, a problem that maintenance management is complicated, and a problem that a large installation space is required.

An ink supply apparatus for a printing press according to the present invention provides a plate cylinder and a blanket cylinder for printing on one side of continuous paper with a single drive source, and an ink supply for a printing machine for driving a plate cylinder and a blanket cylinder for printing on the other side. In the apparatus, an ink storage unit, a fountain roller that draws ink from the ink storage unit, an ink roller unit that supplies ink to the printing plate provided on the plate cylinder via an ink roller and an ink roller group, and the fountain An ink call roller that reciprocates so as to be in contact with both the peripheral surface of the roller and the peripheral surface of the ink roller, an ink call roller moving unit that controls the reciprocation of the ink call roller, and the ink call roller that reciprocates It is detected that the ink call roller is located at a predetermined position on the movement trajectory of A detection unit that transmits a signal every time is provided corresponding to each plate cylinder, and the ink calling roller unit receives a drive signal and a cam that is rotatably provided and receives the drive signal. Cam driving means for rotating the cam at a corresponding speed, and an element that rotatably attaches the ink call roller and makes contact with the outer peripheral surface of the cam to reciprocate the ink call roller by rotation of the cam, A process of measuring a transmission interval time of a signal transmitted from the detection unit, and a process of measuring a reception difference time between a signal transmitted from one of the detection units and a signal transmitted from the other detection unit A process of transmitting the same drive signal to each cam drive means and rotating each cam at the same speed when a value obtained by dividing the reception difference time by the transmission interval time is within a predetermined range; When the value is outside the predetermined range, a process is performed in which different driving signals are transmitted to the cam driving means to rotate the cams at different speeds, and both the ink calling roller and the ink roller are performed. It has the control part which adjusts the timing which contacts.

  According to the present invention, the timing at which the ink calling roller and the ink roller come into contact with each other can be significantly different between the upper stage and the lower stage without any manual operation using a simple configuration and simple control. In other words, the simple configuration and simple control eliminate the need for complicated devices including control means and a large space for installing them, and also reduce the probability of failure of those devices, facilitating maintenance management. Thus, there is an effect that complicated and skill-intensive work such as numerical value setting work is not required.

  Drives the upper and lower plate cylinders and blanket cylinders by contacting the ink call roller and the ink roller by making the timing of contact between the ink call roller and the ink roller significantly different between the upper and lower stages by simple configuration and simple control. The load on the motor can be distributed at the maximum intervals, so that irregular motor rotation can be prevented and unevenness of the printed surface can be prevented and the quality of the printing paper surface can be improved. .

  An ink supply apparatus showing an embodiment of the present invention will be described with reference to the drawings. Description is based on FIG. 1 which is an upper cross-sectional front explanatory view showing the inside of the printing press, FIG. 2 which is an enlarged schematic front view of the lower ink supply device, and FIG. 3 which is an enlarged schematic schematic plan view of FIG. To do. In FIG. 1, the upper U and lower L components are the same, and the same components are given the same reference numerals, except that the reference numeral 63a indicates the upper cam drive means, and reference numeral 81a indicates the upper proximity switch. The control panel 71 and the control unit 72 of the apparatus 7 are independent members that are not related to the upper and lower stages.

  The ink supply device 1 of the printing machine includes an ink storage unit 2, a fountain roller unit 3, an ink calling roller unit 4, an ink roller unit 5, an ink calling roller moving unit 6, and a detecting unit 8. The upper and lower plate cylinders 93 are respectively provided in a pair corresponding to the upper and lower plate cylinders 93 and have one control device 7.

  The ink reservoir 2 has an ink fountain 21 and an ink key 22, stores ink 23 a in a reservoir formed by the ink fountain 21 and the fountain roller 31 circumferential surface, and the ink key 22 and the fountain roller 31 circumferential surface. From the gap S to the peripheral surface of the fountain roller 31. A plurality of ink keys 22 are provided in the axial direction of the fountain roller 31, and each ink key 22 can adjust the gap S between the fountain roller 31 and the circumferential surface thereof. When the fountain roller 31 rotates clockwise in the direction of the arrow as shown in FIG. 2, the stored ink 23 a is rotated around the fountain roller 31 from a gap S having a predetermined width between the ink key 22 and the fountain roller 31 circumferential surface. Is supplied to the surface (23b indicates the supplied ink).

  The fountain roller unit 3 includes a fountain roller 31 and a driving unit 32 that drives the fountain roller 31. The fountain roller 31 is rotatably supported by the frames 95a and 95b via bearings. The fountain roller 31 rotates clockwise as shown in FIG. 2 by the driving means 32, and rotates the ink 23a stored in the ink fountain 21 to rotate the fountain roller 31. Pull it out to 31 circumference. The rotation speed of the fountain roller 31 can be changed.

  The ink calling roller unit 4 includes an ink calling roller 41, roller arms 42a and 42b, and a shaft 43. The shaft 43 is supported at both ends by frames 95a and 95b through a bearing so as to be angularly displaceable. One end of roller arms 42a and 42b is fixed to the shaft 43, and the shaft of the ink calling roller 41 is rotatably supported between the other ends of the roller arms 42a and 42b. The ink calling roller 41 moves with the shaft 43 as a fulcrum by the angular displacement of the shaft 43.

  The ink roller unit 5 includes an ink roller 51 and an ink roller group 52 including a plurality of rollers provided on the downstream side of the ink roller 51.

  The ink calling roller moving unit 6 includes a cam 61, a cam follower 62, a cam driving means (lower stage) 63 b, a cam follower arm 64, a cam shaft 65, a bracket 66, and a spring 67. 63a shows the upper cam drive means. The cam 61 is fixed and rotatable on a cam shaft 65 that is rotated by a cam driving means 63a in the upper stage and by a cam driving means 63b in the lower stage. The cam shaft 65 is rotatably supported by the bracket 66 and the frame 95b via a bearing.

  The cam follower arm 64 has a cam follower 62 at one end and is fixed to the shaft 43 at the other end. The cam follower 62 is provided so as to come into contact with the outer peripheral surface of the cam 61 and is displaced according to the unevenness of the outer peripheral surface of the cam 61 according to the rotation of the cam 61 in one direction.

  As shown in FIG. 4, the shape of the cam 61 includes a portion having a large radius R from the point A to the point B which is an outer peripheral portion of the cam 61 and a portion having a small radius r from the point C to the point D. In the embodiment in which the cam 61 having the shape shown in FIG. 4 is incorporated in the ink supply apparatus shown in FIG. The cam 61 is alternately displaced in the counterclockwise direction at the portion of the cam 61 moving from the small radius r to the large radius R, and the portion of the cam 61 in the clockwise direction at the portion moving from the large radius R to the small radius r. The ink calling roller 41 is formed to reciprocate between the fountain roller 31 and the ink roller 51 through roller arms 42 a and 42 b fixed to the shaft 43 by this displacement. The ink calling roller 41 is in contact with the ink roller 51 when the cam follower 62 is in contact with the outer periphery of the cam 61 with the large radius R, and is in contact with the outer periphery of the cam 61 with the small radius r. When it is in contact with the fountain roller 31.

  The control device 7, which is a single member, includes a control panel 71 and a control unit 72 provided inside the control panel 71, and the number of upper and lower two plate cylinders 93 does not correspond. . The controller 72 is connected to each of the upper cam driving means 63a, the lower cam driving means 63b, the upper proximity switch 81a, and the lower proximity switch 81b. ,

  In this embodiment, the controller 72 transmits a drive signal N1 to the upper cam drive means 63a and the lower cam drive means 63b, respectively, and rotates the upper and lower cams 61 at the same predetermined speed. The control unit 72 receives a pulse P1 that detects the upper detection plate 82 from the upper proximity switch 81a, and receives a pulse P2 that detects the lower detection plate 82 from the lower proximity switch 81b.

  The detection unit 8 includes a proximity switch 81 a provided in the upper stage, a proximity switch 81 b provided in the lower stage, a detection plate 82, and a bracket 83.

  The detection plate 82 is provided at one end of the shaft 43 projecting outward from the frame 95 a in the radial direction and fixed at one position, and is angularly displaced according to the angular displacement of the shaft 43. The proximity switch 81a on the upper stage and the proximity switch 81b on the lower stage are attached to the bracket 83 in proximity to positions where the detection plate 82 can be detected on each of the upper stage and the lower stage. The proximity switches 81a and 81b in the upper and lower stages are positions where the detection plate 82 can be detected when the ink calling roller 41 is in a turning position during a stroke in which the ink calling roller 41 reciprocates between the fountain roller 31 and the ink roller 51. When each detection plate 82 is detected, a pulse P1 and a pulse P2 are transmitted to the control unit 72, respectively.

  Next, the operation of the ink supply device 1 for a printing press according to an embodiment of the present invention will be described. The ink flow in the ink supply device 1 is such that the fountain roller 31 of the fountain roller unit 3 rotates the ink 23a stored in the ink fountain 21 of the ink storage unit 2 provided on the upstream side and the ink key 22 and the fountain roller. It supplies on the surrounding surface of the fountain roller 31 from the clearance gap S with 31 surrounding surface. The ink 23b supplied to the peripheral surface of the fountain roller 31 passes through the ink call roller 41 that is controlled by the ink call roller moving unit 6 to reciprocate between the peripheral surface of the fountain roller 31 and the peripheral surface of the ink roller 51. , And supplied to the peripheral surface of the ink roller 51. The ink 23 b supplied to the peripheral surface of the ink roller 51 is supplied to a printing plate provided on the plate cylinder 93 through an ink roller group 52 including a roller in contact with the ink roller 51. Further, printing is performed on continuous paper (web) 91 via a blanket surface of a blanket cylinder 92 rotating in contact with the printing plate.

  Next, the timing at which the upper ink call roller 41 and the ink roller 51 are in contact with each other and the timing at which the lower ink call roller 41 and the ink roller 51 are in contact with each other in the ink supply apparatus 1 of the printing press according to the embodiment of the present invention. The operation of adjusting the mutual timing with will be described.

  The adjustment of the mutual timing between the timing at which the upper ink calling roller 41 and the ink roller 51 are in contact with the timing at which the lower ink calling roller 41 and the ink roller 51 are in contact is performed as follows. That is, when the starting operation is performed, the drive signal N1 is transmitted from the control unit 72 to the upper cam driving means 63a and the lower cam driving means 63b, and the upper and lower cams 61 rotate at the same predetermined speed.

  Due to the rotation of the cam 61, the cam follower 62 rotating in contact with the circumferential surface of the cam 61 is displaced by the pressing force of the spring 67 according to the unevenness of the outer circumferential surface of the cam 61, and the cam follower arm 64 is displaced according to the displacement of the cam follower 62. When the cam 61 rotates once, the shaft 43 to which the cam follower arm 64 is fixed is angularly displaced alternately once in the clockwise direction and in the counterclockwise direction.

  When the shaft 43 is angularly displaced alternately once in the clockwise direction and in the counterclockwise direction as described above, the ink calling roller 41 is connected to the fountain roller 31 and the ink roller via the roller arms 42a and 42b fixed to the shaft 43. 1 reciprocating movement with 51. In FIG. 2, when the cam 61 rotates in the clockwise direction, the ink calling roller 31 contacts the ink roller 51 while the cam follower 62 is positioned on the outer peripheral portion from the point A to the point B having a large radius R of the cam 61. is doing. Further, the ink calling roller 31 moves from the ink roller 51 to the fountain roller 31 while the cam 61 rotates and the cam follower 62 is positioned between the outer peripheral portion B and the point C of the cam 61. Further, while the cam 61 rotates in the clockwise direction and the cam follower 62 is positioned on the outer peripheral portion from the point C to the point D, which is the small radius r of the cam 61, the ink calling roller 31 is in contact with the fountain roller 31. . Further, the ink calling roller 31 moves from the fountain roller 31 to the ink roller 51 while the cam 61 rotates and the cam follower 62 is positioned between the outer peripheral portion D and the point A of the cam 61.

  When the shaft 43 is angularly displaced, the detection plate 82 provided on the shaft 43 is also angularly displaced. Then, in the process in which the ink calling roller 41 makes one reciprocation between the fountain roller 31 and the ink roller 51, the detection plate 82 is located at a position where the ink calling roller 41 contacts the ink roller 51 in this embodiment. The proximity switches 81a and 81b are provided so as to be detected. The ink calling roller 41 may be provided so as to be detected by the proximity switches 81a and 81b at a position where the ink calling roller 41 contacts the fountain roller 31.

  As described above, the detection plate 82 moves in accordance with the angular displacement of the shaft 43 in both the upper stage and the lower stage, and is detected by the upper proximity switch 81a and the lower proximity switch 81b by approaching the proximity switches 81a and 81b, respectively. Is done. Each time the detection plate 82 is detected, the upper proximity switch 81 a transmits a pulse P 1 to the control unit 72, and the lower proximity switch 81 b transmits a pulse P 2 to the control unit 72.

  The controller 72 measures the pulse transmission interval time T1 of the pulse P1 in this embodiment, which is one of the pulses P1 and P2 that is determined in advance. The pulse transmission interval time T1 is a time for one rotation of the cam 61, and is also a time for the ink calling roller 41 to reciprocate between the fountain roller 31 and the ink roller 51 once. Further, the control unit 72 measures a pulse reception difference time T2, which is a time difference between reception of the pulse P1 and the pulse P2. The pulse reception difference time T2 is a time difference between timings at which the upper ink call roller 41 and the lower ink call roller 41 come into contact with the ink roller 51, respectively.

  Next, the control unit 72 calculates a calculated value Y of the pulse reception difference time T2 / pulse transmission interval time T1, and compares the calculated value Y with a predetermined target value Z. When the calculated value Y is different from the target value Z, the control unit 72 continuously transmits the drive signal N1 to one of the predetermined cam driving means 63a in this embodiment, but the other, In this embodiment, a driving signal N2 different from the driving signal N1 is transmitted to the lower cam driving means 63b.

  Since the upper cam driving means 63a rotates the upper cam 61 at the same speed as before by the same drive signal N1, pulses P1 are also transmitted at the same interval. On the other hand, the lower cam driving means 63b rotates the rotational speed of the lower cam 61 at a different predetermined speed so far by the changed drive signal N2. For this reason, since the transmission interval of the pulse P2 is also different, the pulse reception difference time T2, which is the time difference between the reception of the pulse P1 and the pulse P2 received by the controller 72, also changes.

  The control unit 72 compares the new calculated value Y with a predetermined target value Z, and when it matches or falls within a predetermined numerical difference, a driving signal transmitted to the lower cam driving means 63b. N2 is transmitted back to the original drive signal N1.

  Preferably, when the target value Z is set to ½, both the timing when the upper ink call roller 41 contacts the ink roller 51 and the timing when the lower ink call roller 41 contacts the ink roller 51 are both timings. The time difference can be maximized. That is, the ink call roller 41 reciprocates between the fountain roller 31 and the ink roller 51 according to the contact timing between the upper ink call roller 41 and the ink roller 51 and the contact timing between the lower ink call roller 41 and the ink roller 51. It can be shifted by half the time to do so, and contact is made alternately.

  For this reason, the contact timing between the upper ink call roller 41 and the ink roller 51 and the contact timing between the lower ink call roller 41 and the ink roller 51 do not approach each other or are not performed at the same time. The load on the motor 94 that drives the blanket cylinder 92 can be distributed at maximum intervals. Therefore, irregular rotation of the motor 94 does not occur, and it is possible to prevent the unevenness of the printing surface from occurring. In other words, the quality of the printing paper surface can be improved by a simple device and simple control without any manual work by the worker during the work.

  The present invention is used in a printing machine having an ink supply device.

Cross section front explanatory drawing of the upper and lower stages which shows the inside of the printing press which is embodiment of this invention Expansion explanation schematic front view of the lower stage ink supply apparatus which is an embodiment of the present invention FIG. 2 is an enlarged schematic plan view of the explanation. Schematic diagram of a cam used in an ink supply apparatus according to an embodiment of the present invention Schematic front explanatory view of an ink supply device related to the prior art 1

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ink supply apparatus 2 Ink storage part 21 Ink fountain 22 Ink key 23a Ink (stored ink)
23b Ink (supplied ink)
DESCRIPTION OF SYMBOLS 3 Fountain roller part 31 Fountain roller 32 Drive means 4 Ink call roller part 41 Ink call roller 42a, 42b Roller arm 43 Axis 5 Ink roller part 51 Ink roller 52 Ink roller group 6 Ink call roller moving part 61 Cam 62 Cam follower 63a Upper stage Cam drive means 63b Lower cam drive means 64 Cam follower arm 65 Cam shaft 66 Bracket 67 Spring
7 Control Device 71 Control Panel 72 Control Unit 8 Detection Unit 81a Upper Proximity Switch 81b Lower Proximity Switch 82 Detection Plate 83 Bracket 90 Printing Machine 91 Continuous Paper (Web)
92 Blanket cylinder 93 Plate cylinder 94 Motor (plate cylinder, blanket cylinder motor)
95a, 95b Frame S Gap (gap between ink key 22 and fountain roller 31 circumferential surface)
T1 pulse transmission interval time (time for 41 reciprocating movements of ink call roller)
T2 pulse reception difference time (time difference in timing when the upper and lower ink call rollers 41 contact the ink roller 51)
Y calculated value (= T2 / T1)
Z target value P1 pulse from upper proximity switch P2 pulse from lower proximity switch N1 drive signal N2 drive signal different from N1 100 printing machine of prior art 1
DESCRIPTION OF SYMBOLS 101 Ink supply apparatus of the prior art 1 102 Ink calling roller moving motor of the prior art 1 103 Air cylinder used for the prior art 1

Claims (2)

In the ink supply device of the plate cylinder and the printing motor for driving the plate cylinder and the blanket cylinder to print on the blanket cylinder and the other surface to print on one side of the continuous sheet in a single drive source,
And an ink reservoir, the fountain roller to draw the ink from the ink reservoir, the ink roller unit supplying the printing plate provided on the plate cylinder of Lee Nki through the ink rollers and Lee Nkirora group of the fountain roller and ink ductor roller contacts capable reciprocate in both the circumferential surface and the circumferential surface of the ink roller, and the ink ductor roller movement unit which controls the reciprocating motion of the ink ductor roller, the movement of the ink ductor roller which reciprocates setting one set and detection portion to which the ink ductor roller is transmitting a signal each time it detects that the position in a predetermined position, a corresponding to the plate cylinder of each on the trajectory,
The ink call roller unit includes a cam provided rotatably, cam drive means for receiving a drive signal and rotating the cam at a speed corresponding to the drive signal, and the ink call roller rotatably attached to the cam. An element that is in contact with the outer peripheral surface of the ink reciprocating member and reciprocatingly moves the ink calling roller by rotation of the cam.
A process of measuring a transmission interval time of a signal transmitted from one of the detection units, and a process of measuring a reception difference time between a signal transmitted from one of the detection units and a signal transmitted from the other detection unit And when the value obtained by dividing the reception difference time by the transmission interval time is within a predetermined range, the same drive signal is transmitted to each cam drive means to rotate each cam at the same speed, and performs a process of rotating and transmitting different driving signals to each of said cam driving means when the value is out of the predetermined range of each said cam at different speeds, and with both of said ink ductor roller and the ink roller has but a control unit that adjust the timing of contact
Ink supply apparatus for a printing press, wherein a call. Each said detection unit, wherein attached to the ink ductor roller moving unit comprises one sensing plate which moves in accordance with the angular displacement of the axis of angular displacement by the displacement of the ink ductor roller movement unit, before Symbol of the ink feed roller reciprocates wherein by detecting the detection plate transmits a signal when reaching the folded position,
Ink supply apparatus for a printing press according to 請 Motomeko 1.

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