JP2015160322A - Gravure printing machine and operational method for gravure printing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gravure printing machine which can prevent a plate groove from drying during a process other than transfer from a plate cylinder to a rubber cylinder or a substrate and an operational method for a gravure printing machine.SOLUTION: In a gravure printing machine comprising a plate cylinder 120 provided with a recess filled with an ink 2 in a printing face and a first doctor blade 121 the tip of which is so disposed as to move by contact with and separation from the printing face of the plate cylinder 120 to have a receipt process for transferring the ink 2 filling the recess to a blanket cylinder 110 in counter contact with the plate cylinder 120, when the receipt process is not carried out, the tip of the first doctor blade 121 is separated from the printing face of the plate cylinder 120 to form a film of the ink 2 that covers the recess of the printing face of the plate cylinder 120. On the other hand, when the receipt process is carried out, the tip of the first doctor blade 121 is brought into counter contact with the printing face of the plate cylinder 120 to remove the ink 2 that sticks to a part other than the recess, thereby leaving only the ink 2 filling the recess.

Description

  The present invention relates to a gravure printing machine and a method for operating a gravure printing machine.

  In the field of printed electronics (PE), the use of a gravure printing machine has been studied. For example, in a flat bed type in which a sheet-like base material is arranged and printed on a flat plate (flat bed), a plate cylinder (gravure cylinder) in which an intaglio (gravure plate) in which a groove of a wiring pattern is formed is mounted on the outer periphery The ink is fed to the intaglio plate while rotating the plate cylinder by bringing the doctor blade into contact with the ink, and at the same time, the ink adhering to the portions other than the groove is removed from the intaglio plate. While scraping and removing, the blanket cylinder (rubber cylinder) around which the silicone blanket is wound is rotated while being in contact with the plate cylinder, so that the ink corresponding to the intaglio wiring pattern of the plate cylinder is transferred to the blanket cylinder. After passing on the silicone blanket, the blanket cylinder is rolled on the flat bed substrate to It has become the ink on the silicone blanket of the blanket cylinder to be able to print transferred onto the substrate (e.g., refer to Patent Document 1, etc.).

JP 2005-186597 A

  By the way, in the gravure printing machine as described above, after the transfer from the plate cylinder to the blanket cylinder and before the transfer from the blanket cylinder to the substrate, the viscosity of the ink transferred to the blanket cylinder is adjusted. Waiting process, transfer of the substrate from the plate cylinder to the blanket cylinder (acceptance), transfer of the substrate, setting of a new substrate, registration of this substrate, etc. There is a process of performing.

  However, since the width of the groove of the wiring pattern formed on the intaglio is very narrow (about 1 to 100 μm), after completion of the receiving process for transferring (receiving) from the plate cylinder to the blanket cylinder, If doctoring (scraping of ink by the doctor) is continued in the plate cylinder until the next transfer, the ink filled in the grooves of the wiring pattern may be dried and solidified. If the printing operation is continued with the ink filled in the grooves of the wiring pattern dried and solidified, the wiring pattern printed on the substrate may cause a defective portion. However, it is necessary to clean the intaglio, but the intaglio cleaning work is troublesome because the width of the groove of the wiring pattern is thin as described above, which is a heavy burden on the operator.

  For this reason, the present invention is a gravure printing that can prevent the ink filled in the plate groove from drying when the receiving step of transferring the ink from the plate cylinder to the rubber cylinder or the substrate is not performed. It is an object of the present invention to provide an operation method of a printing machine and a gravure printing machine.

An operation method of the gravure printing machine according to the first invention for solving the above-mentioned problems is as follows.
A gravure plate cylinder provided with a recess filled with ink on the plate surface;
A doctor blade disposed so that the tip portion can move away from and touching the plate surface of the gravure plate cylinder;
In the operation method of the gravure printing machine for forming the functional pattern by the ink on the transferred member by the receiving process of transferring the ink filled in the concave portion to the transferred member contacting the gravure plate cylinder,
When not performing the receiving step, the first step of forming the ink film covering the concave portion of the plate surface of the gravure plate cylinder by separating the tip of the doctor blade from the plate surface of the gravure plate cylinder;
A second step of removing the ink adhering to a portion other than the concave portion by bringing the tip of the doctor blade into contact with the plate surface of the gravure plate cylinder when performing the receiving step. .

Moreover, the operation method of the gravure printing machine according to the second invention is the operation method of the gravure printing machine according to the first invention,
While bringing the tip of the doctor blade into contact with the plate surface of the gravure plate cylinder in accordance with the timing when the receiving step is started from the state of the first step,
The distal end portion of the doctor blade is separated from the plate surface of the gravure plate cylinder in accordance with the timing when the receiving step is completed from the state of the second step.

Further, the operation method of the gravure printing machine according to the third invention is the operation method of the gravure printing machine according to the first or second invention,
3. The operation method of a gravure printing machine according to claim 1, wherein in the first step, the tip of the doctor blade is repeatedly brought into contact with and separated from the plate surface of the gravure plate cylinder.

Moreover, the operation method of the gravure printing machine which concerns on 4th invention is the operation method of the gravure printing machine which concerns on 3rd invention,
The gravure printing machine is provided upstream of the doctor blade in the rotational direction of the gravure plate cylinder, and a front end portion of the gravure plate cylinder has a gap between the gravure plate cylinder and the gravure plate cylinder. An upstream doctor blade disposed so as to be movable between a contact position that contacts the printing plate;
In the first step, the tip of the upstream doctor blade is positioned at the close position to form an ink film having a thickness corresponding to the gap on the surface of the gravure plate cylinder,
In the second step, the tip of the upstream doctor blade is positioned at the contact position to remove ink adhering to a portion other than the concave portion.

Moreover, the operation method of the gravure printing machine according to the fifth invention is the operation method of the gravure printing machine according to the third invention,
The gravure printing machine is
An upstream doctor blade disposed upstream of the doctor blade in the rotational direction of the gravure plate cylinder, and a tip portion of the gravure plate cylinder arranged to move away from and contact with the plate surface of the gravure plate cylinder,
A scraper disposed on the upstream side in the rotational direction of the gravure plate cylinder from the upstream doctor blade, and a scraper disposed at a proximity position of a tip portion of the gravure plate cylinder with the plate surface of the gravure plate cylinder,
In the first step, the scraper forms an ink film having a thickness corresponding to the gap on the plate surface of the gravure plate cylinder,
The tip of the upstream doctor blade is separated from the gravure plate cylinder more than the gap with the gravure plate cylinder of the scraper, and the tip of the upstream doctor blade is repeatedly opposed to the plate surface of the gravure plate cylinder. Make contact and separation,
In the second step, the tip of the upstream doctor blade is brought into contact with the gravure plate cylinder to remove ink adhering to a portion other than the concave portion.

A gravure printing machine according to the sixth invention is
A gravure plate cylinder provided with a recess filled with ink on the plate surface;
A doctor blade disposed so that the tip portion can move away from and touching the plate surface of the gravure plate cylinder;
In the gravure printing machine for forming the functional pattern by the ink on the member to be transferred by the receiving process of transferring the ink filled in the concave portion to the member to be transferred that contacts the gravure plate cylinder,
Phase detection means for detecting a reference phase of the gravure printing machine;
Doctor blade drive means for moving the tip of the doctor blade against and away from the plate surface of the gravure plate cylinder; and
Based on the phase detection means, when the receiving step is not performed, the blade driving means is controlled so that the tip of the doctor blade is separated from the plate surface of the gravure plate cylinder, while the receiving step is performed. Control means for controlling the doctor blade driving means so that the tip of the doctor blade comes into contact with the plate surface of the gravure plate cylinder.

  According to the gravure printing machine and the operation method of the gravure printing machine according to the present invention described above, when the receiving process is not performed, the tip of the doctor blade is separated from the plate surface of the gravure plate cylinder, and the gravure plate cylinder While forming the ink film covering the concave portion of the printing plate, while performing the receiving step, the tip of the doctor blade was brought into contact with the plate surface of the gravure printing cylinder and adhered to a portion other than the concave portion Since the ink is removed, when the receiving step is not performed, the concave portion of the gravure plate cylinder is covered with the ink film, and drying of the ink filled in the concave portion can be prevented. Thereby, the cycle of the plate surface cleaning of the gravure plate cylinder at the time of printing operation is extended, which leads to improvement in productivity of printed matter.

It is a schematic block diagram which shows the principal part of the gravure printing machine which concerns on Example 1 of this invention. It is another schematic block diagram which shows the principal part of the gravure printing machine which concerns on Example 1 of this invention. It is a block diagram which shows the control structure of the gravure printing machine which concerns on Example 1 of this invention. It is explanatory drawing which shows the operation state of the gravure printing machine which concerns on Example 1 of this invention in time series. It is a principal part enlarged view of the gravure printing machine which concerns on Example 1 of this invention. It is a principal part side view of the gravure printing machine which concerns on Example 1 of this invention. It is explanatory drawing which shows the operation state of the gravure printing machine which concerns on Example 2 of this invention in time series. It is explanatory drawing which shows the operation state of the gravure printing machine which concerns on Example 3 of this invention in time series.

  Hereinafter, the gravure printing machine and the operation method of the gravure printing machine according to the present invention will be described with reference to the drawings, but the present invention is not limited only to the following examples.

  A gravure printer according to Embodiment 1 of the present invention and an operation method of the gravure printer will be described with reference to FIGS.

  As shown in FIG.1 and FIG.2, in the gravure printing machine 100 which concerns on a present Example, the base materials 1, such as a sheet-like resin film which is a target object, and flexible glass, are mounted on the flat bed 110. FIG. It has come to be supported. In addition, a sleeve-type wiring pattern groove (width: about 1 to 100 μm, depth: about 1 to 100 μm) is formed on one side in the longitudinal direction of the flat bed 110 (left side in FIG. 1). A plate cylinder (gravure cylinder) 120 having an intaglio (gravure plate) 124 mounted on the outer periphery thereof is rotatably arranged so as to be directed in the axial direction in the width direction (perpendicular to the paper surface in FIG. 1) of the flat bed 110. On the other hand, a blanket cylinder (silicone blanket cylinder) 130 having a silicone blanket wound around the outer periphery is moved axially in the width direction of the flat bed 110 so that the blanket cylinder 130 can move while rotating between a position where it contacts the plate cylinder 120 and the flat bed 110. Is arranged so as to be rotatable. The blanket cylinder 130 can move while rotating between one end side (left side in FIG. 1) and the other end side (right side in FIG. 1) of the flat bed 110. When positioned on the material 1, it can roll while contacting the substrate 1. Hereinafter, the position where the blanket cylinder 130 contacts the plate cylinder 120 (intaglio 124) (in this embodiment, the position of the plate cylinder rotation angle θB with the vertex of the plate cylinder 120 being 0 °) is referred to as a receiving position.

The first doctor blade 121 is in contact with the ink filling position of the plate cylinder 120 (intaglio plate 124) (the position of the plate cylinder rotation angle θ1 with the top of the plate cylinder 120 being 0 °). It is arranged so that it can move away.
When the tip of the first doctor blade 121 is in contact with the intaglio plate 124 (attachment position), the ink 2 is supplied between the intaglio plate 124 and the first doctor blade 121 as necessary. As the plate cylinder 120 rotates, the first doctor blade 121 feeds (fills) the ink 2 into the grooves of the wiring pattern of the intaglio plate 124 and, at the same time, adheres to portions other than the grooves. The ink 2 can be scraped off from the intaglio plate 124. Further, when the tip of the first doctor blade 121 is in a state of being separated (deposition) from the intaglio plate 124, the tip of the first doctor blade 121 has a clearance (gap) between the scraper 123 and the intaglio 124 described later. It is separated from the intaglio plate 124 for more than minutes.

In addition, the second doctor blade 122 is placed on the plate cylinder 120 at an ink scraping position of the intaglio plate 124 (position of the plate cylinder rotation angle θ2 with the vertex of the plate cylinder 120 being 0 °, where θ1 <θ2). On the other hand, it is arranged so as to be able to move toward and away from each other.
When the leading end of the second doctor blade 122 is in contact with the intaglio plate 124 (attachment position), the second doctor blade 122 has a tip portion other than the groove of the intaglio plate 124 as the plate cylinder 120 rotates. The ink 2 adhering to the portion can be scraped off from the intaglio plate 124. Further, when the tip of the second doctor blade 122 is separated from the intaglio plate 124 (deposition position), the tip of the second doctor blade 122 has a clearance (gap) between the scraper 123 and the intaglio 124 described later. It is separated from the intaglio plate 124 for more than minutes.

  In addition, the scraper 123 is located near the plate cylinder 120 at an ink film forming position of the intaglio plate 124 (position of the plate cylinder rotation angle θs with the vertex of the plate cylinder 120 being 0 °, where θs <θ1). It is arranged so that it can move away. The length of the scraper 123 along the axial direction of the plate cylinder 120 is longer than the length of the first doctor blade 121 and the second doctor blade 122 along the axial direction of the plate cylinder 120 (FIG. 6). reference).

  When the tip of the scraper 123 is in a state close to the plate cylinder 120, the scraper 123 has a predetermined clearance (for example, 0.03 mm to 0.1 mm) between the tip and the intaglio plate 124. As the plate cylinder 120 rotates, a film (ink film) of ink 2 having a thickness corresponding to the clearance that has passed through the gap between the tip of the scraper 123 and the intaglio plate 124 is formed on the surface (plate surface) of the intaglio plate 124. It can be formed.

  In addition, as shown in FIG. 3, in this embodiment, the control device 141 of the gravure printing machine 100 includes a phase detector 142 that detects a reference phase of the entire gravure printing machine 100 (hereinafter referred to as a reference phase), and A first doctor blade air cylinder 144, a second doctor blade 121 that moves the first doctor blade 121 against and away from the plate cylinder 120 while inputting a detection signal from the blanket cylinder position detector 143 that detects the position of the blanket cylinder 130. A control signal is output to the second doctor blade air cylinder 145 that moves the doctor blade 122 toward and away from the plate cylinder 120 and the scraper air cylinder 146 that moves the scraper 123 closer to and away from the plate cylinder 120. It is configured as follows.

  The flow of control by the control device 141 will be described with reference to FIGS. 4 and 5. 5A shows a state in which the tip ends of the first doctor blade 121 and the second doctor blade 122 are separated from the intaglio plate 124 and the tip portion of the scraper 123 is in a position close to the intaglio plate 124. FIG. 5B shows a state where the tip of the first doctor blade 121 is in contact with the intaglio 124 from the state shown in FIG. 5A, and FIG. 5C shows a second state after the state shown in FIG. FIG. 5D shows a state where the tip of the doctor blade 122 is in contact with the intaglio plate 124, and FIG. 5D shows a state where the tip of the first doctor blade 121 is separated from the intaglio plate 124 with respect to FIG. . Further, in FIG. 5, the film thickness of the ink 2 is exaggerated in order to easily understand that the film of the ink 2 is formed on the surface of the plate cylinder 120.

  First, a time t1 shown in FIG. 4 is a state in which a film of the ink 2 is formed on the surface of the intaglio plate 124 after the last receiving process is completed. At this time, as shown in FIG. The doctor blade 121 and the second doctor blade 122 are positioned at positions (displacement positions) where the tip portions are separated from the intaglio plate 124, and the scraper 123 is positioned at a position (tip position) where the tip portions are close to the intaglio plate 124. Note that reference numeral 2 c in FIG. 5A is an ink reservoir formed by the ink 2 accumulated between the scraper 123 and the plate cylinder 120.

  In this state, when the control device 141 detects the start of the accepting process based on the signal input from the blanket cylinder position detector 143, first, prior to the accepting process start time t5 when the rotation angle of the plate cylinder becomes θB, Based on the reference phase input from the detector 142, the tip of the first doctor blade 121 is brought into contact with the plate cylinder 120 with respect to the first doctor blade air cylinder 144 at time t3 when the rotation angle of the plate cylinder becomes θ1. A command is output to As a result, as shown in FIG. 5B, the tip of the first doctor blade 121 is in contact with the plate cylinder 120 at time t <b> 3, and the portion other than the groove of the intaglio plate 124 by the tip of the first doctor blade 121. Scraping of the ink 2 adhering to the ink is started. Here, at the time t3, when the position on the plate cylinder 120 where the scraping of the ink 2 is started by the tip portion of the first doctor blade 121 comes to the receiving position in accordance with the start timing of the receiving process, The time is set based on the reference phase input from the phase detector 142 so that the blanket cylinder 130 contacts the intaglio plate 124 and the receiving process is started. Note that reference numeral 2 a in FIG. 5B is an ink reservoir formed by the ink 2 scraped by the first doctor blade 121.

  Subsequently, the control device 141 precedes the reception process start time t5, based on the reference phase input from the phase detector 142, at time t4 when the rotation angle of the plate cylinder becomes θ2, the second doctor blade air cylinder 145. In response to this, a command is output to bring the tip of the second doctor blade 122 into contact with the intaglio plate 124. As a result, as shown in FIG. 5C, the tip of the second doctor blade 122 comes into contact with the intaglio plate 124 at time t4, and the tip of the second doctor blade 122 is placed in a portion other than the groove of the intaglio plate 124. Scraping of the attached ink 2 is started. Here, at time t4, when the position on the plate cylinder 120 where the scraping of the ink 2 is started by the tip of the first doctor blade 121 comes to the ink scraping position in synchronization with the start timing of the receiving process. Furthermore, the position on the plate cylinder 120 where the scraping of the ink 2 is started by the leading end of the second doctor blade 122 and the scraping of the ink 2 by the leading end of the second doctor blade 122 is started. The time is set based on the reference phase input from the phase detector 142 so that the blanket cylinder 130 comes into contact with the intaglio plate 124 when the receiving position is reached and the receiving process is started. Note that reference numeral 2 b in FIG. 5C is an ink reservoir formed by the ink 2 scraped by the second doctor blade 122.

  Thereafter, based on the reference phase input from the phase detector 142, at time t5 when the rotation angle of the plate cylinder becomes θB, the blanket cylinder 130 comes into contact with the intaglio plate 124, and the receiving process is started. It is delivered on the silicone blanket in a state corresponding to the wiring pattern. As described above, in this receiving step, the position on the plate cylinder 120 where the scraping of the ink 2 is started by the leading end of the first doctor blade 121 and the leading end of the second doctor blade 122 comes to the receiving position θB. Will be started.

  Subsequently, prior to the end time t10 of the receiving process, the control device 141, based on the reference phase input from the phase detector 142, at the time t8 when the rotation angle of the plate cylinder becomes θ1, the first doctor blade air cylinder 144. In response to this, a command is output to move the tip of the first doctor blade 121 away from the plate cylinder 120. As a result, as shown in FIG. 5 (d), the tip of the first doctor blade 121 is separated from the intaglio plate 124 at time t 8 (displaced). The scraping of the ink 2 adhering to this portion is completed, and the film of the ink 2 that has passed between the tip of the scraper 123 and the intaglio 124 is maintained in a state of covering the surface of the intaglio 124. Here, at time t8, when the position on the plate cylinder 120 where the ink 2 has been scraped off by the tip of the first doctor blade 121 comes to the receiving position in accordance with the end timing of the receiving process, The time is set based on the reference phase input from the phase detector 142 so that the cylinder 130 is separated from the intaglio plate 124 and the receiving process is completed.

  After that, the control device 141 repeats contact / separation (detachment) of the first doctor blade 121 with respect to the plate cylinder 120 at a predetermined time interval with respect to the first doctor blade air cylinder 144 at a predetermined time interval. Command is output. Thereby, for a while from time t8 (for example, while the plate cylinder 120 makes one rotation), the tip of the first doctor blade 121 repeats contact and separation with respect to the intaglio plate 124 at a predetermined time interval and a specified number of times. The ink 2 adhered to the tip of the first doctor blade 121 is returned to the intaglio plate 124 (ink return).

  Subsequently, prior to the end time t10 of the receiving process, the control device 141, based on the reference phase input from the phase detector 142, at the time t9 when the rotation angle of the plate cylinder becomes θ2, the second doctor blade air cylinder 145. In response to this, a command is output to move the tip of the second doctor blade 122 away from the intaglio plate 124. As a result, as shown in FIG. 5A, at the time t9, the tip of the second doctor blade 122 is separated from the intaglio plate 124 (deposition), except for the groove of the intaglio plate 124 by the tip of the second doctor blade 122. The scraping of the ink 2 adhering to this portion is completed, and the film of the ink 2 that has passed between the tip of the scraper 123 and the intaglio 124 is maintained in a state of covering the surface of the intaglio 124. At time t9, when the position on the plate cylinder 120 where the ink 2 has been scraped off by the tip of the first doctor blade 121 has reached the ink scraping position in time with the end of the receiving process, The position on the plate cylinder 120 where the scraping of the ink 2 by the tip of the second doctor blade 122 is finished comes to the receiving position so that the scraping of the ink 2 by the tip of the second doctor blade 122 is finished. The time is set based on the reference phase input from the phase detector 142 so that the blanket cylinder 130 is separated from the intaglio plate 124 and the receiving process is completed.

  Thereafter, the control device 141 repeats contact / separation (removal) of the tip of the second doctor blade 122 with respect to the second doctor blade air cylinder 145 at a predetermined time interval and a predetermined number of times. Outputs a command. Thereby, for a while from the time t9 (for example, while the plate cylinder 120 makes one rotation), the tip of the second doctor blade 122 repeats contact and separation with respect to the intaglio plate 124 at a predetermined time interval and a specified number of times. Ink 2 adhered to the tip of the second doctor blade 122 is returned to the intaglio plate 124 (ink return).

  Thereafter, at time t10, the receiving process is completed, and the blanket cylinder 130 is separated from the intaglio plate 124. At this time, the surface of the intaglio plate 124 is in a state in which the film of the ink 2 is formed from the film formation position to the reception position, and then the surface of the intaglio plate 124 is the ink 2 over the entire circumference at time t11 shown in FIG. It will be in the state covered with the film. As described above, in the receiving process, the positions on the plate cylinder 120 where the ink 2 has been scraped off by the leading end of the first doctor blade 121 and the leading end of the second doctor blade 122 have reached the receiving position. Sometimes it ends. As is clear from FIG. 4, the scraper 123 is always in the landing position (proximity position) during printing operation.

  In parallel with the above-described processing after the acceptance process, the gravure printing machine 100 reads the state of the ink 2 transferred onto the blanket cylinder 130 with a camera, and the viscosity of the ink 2 becomes a semi-solidified state suitable for transfer. When the viscosity of the ink bed 2 is suitable for transfer, the blanket cylinder 130 is moved from one end side (left side in FIG. 2) to the other end side (left side in FIG. 2). By moving while rotating toward the right side in FIG. 2, the ink rolls on the base material 1 to transfer the ink 2 on the silicone blanket onto the base material 1 for printing (transfer process). 2). As a result, the ink 2 is transferred onto the substrate 1 in a state corresponding to the wiring pattern, and the wiring pattern is printed.

  Thereafter, the printed substrate 1 is conveyed (discharge process), while a new substrate 1 is placed on and supported by the flat bed 110 (substrate setting process), and the substrate 1 is registered (base). After performing the material registration adjusting step, the blanket cylinder 130 is moved to a position in contact with the plate cylinder 120 (intaglio 124), and the above-described processing after time t3 is performed. While a process other than the accepting process is being performed (when the accepting process is not performed. Specifically, after the accepting process is completed, the blanket cylinder 130 is moved to a position in contact with the plate cylinder 120. In the gravure printing machine 100 according to the present embodiment, the state in which the surface of the plate cylinder 120 (the concave portion of the plate surface) is covered with the ink 2 film is maintained.

  In this embodiment, the first doctor blade 121 constitutes the upstream doctor blade, the second doctor blade 122 constitutes the doctor blade, the phase detector 142 constitutes the phase detection means, and the first doctor blade The air cylinder 144 and the second doctor blade air cylinder 145 constitute doctor blade driving means, the blanket cylinder 130 constitutes a member to be transferred, and the control device 141 constitutes control means.

Thus, according to the gravure printing machine 100 according to the present embodiment, while performing processes other than the receiving process, for example, after the receiving process is finished, the camera 2 reads the viscosity of the ink 2 transferred to the blanket cylinder 130, and the viscosity. The plate cylinder 120 is in a standby state during adjustment, conveyance of the substrate, setting of the substrate, registration of the substrate, and the like. During such a standby state, the surface of the plate cylinder 120 is Since the ink 2 is covered with the film, drying of the ink 2 filled in the plate groove can be prevented.
Accordingly, the frequency of cleaning the intaglio 124 during the printing operation can be reduced, so that the productivity of printed matter can be improved.
In addition, the length along the axial direction of the plate cylinder 120 of the scraper 123 is longer than the length along the axial direction of the plate cylinder 120 of the first doctor blade 121 and the second doctor blade 122, so that The concave portions of the plate cylinder 120 can be covered with a film of ink 2 (drying prevention film) within a sufficient range, and as shown in FIG. 6B, the tip portions of the first doctor blade 121 and the second doctor blade 122 When the ink 2 adhering to the portion other than the groove of the intaglio plate 124 is scraped off, the ink band 2e leaking to both ends of the first doctor blade 121 and the second doctor blade 122 is formed into a band shape. As shown in FIG. 6 (a), the consumption of ink 2 can be reduced by using it again as a film of ink 2. Kill.
Further, the ink 2 attached to the tips of the first doctor blade 121 and the second doctor blade 122 is obtained by performing ink return for repeatedly contacting and separating the first doctor blade 121 and the second doctor blade 122 with respect to the plate cylinder 120. Can be returned to the plate cylinder 120, and the consumption of the ink 2 can be further suppressed.

A gravure printer according to Embodiment 2 of the present invention and a method for operating the gravure printer will be described with reference to FIG.
In the above-described first embodiment, an example in which the first doctor blade 121, the second doctor blade 122, and the scraper 123 are provided in the plate cylinder 120 is shown. However, in the present embodiment, the scraper 123 of the above-described first embodiment is abolished, An example in which only the first doctor blade 121 and the second doctor blade 122 are provided on the plate cylinder 120 is shown. Other configurations are substantially the same as those of the first embodiment described above, and hereinafter, the same members are denoted by the same reference numerals, and redundant description will be omitted as appropriate, and different points will be mainly described.

In the present embodiment, with the scraper 123 shown in FIG. 1 and the like being abolished, the first doctor blade 121 is longer in the axial direction of the plate cylinder 120 than the second doctor blade 122. Configured as follows.
The first doctor blade air cylinder 144 is located between a position where the tip of the first doctor blade 121 comes into contact with the intaglio plate 124, a proximity position close to the intaglio plate 124, and a disengagement position away from the intaglio plate 124. It is assumed that the first doctor blade 121 can be scraped at the same time as supplying (filling) the ink 2 as necessary, and can form a film of the ink 2 as needed.

  In this embodiment configured as described above, when the front end portion of the first doctor blade 121 is in contact with the intaglio plate 124, the first doctor blade 121 moves along with the rotation of the plate cylinder 120. The ink 2 adhering to the portion other than the groove of 124 can be scraped off from the intaglio plate 124, while the first doctor blade 121 is in a state where the front end portion of the first doctor blade 121 is close to the intaglio plate 124. 121 has a predetermined clearance (for example, 0.03 mm to 0.1 mm) between the front end portion thereof and the intaglio plate 124, and the first inscription on the surface of the intaglio plate 124 as the plate cylinder 120 rotates. A film of ink 2 having a thickness corresponding to the clearance that has passed through the gap between the tip of the doctor blade 121 and the intaglio 124 can be formed.

  Then, as shown in FIG. 7, at the time t1 after the previous receiving process is completed and before the next receiving process is started, the second doctor blade 122 is dislocated, while the first doctor blade 121 becomes a proximity position and forms a film of ink 2 on the surface of the plate cylinder 120.

  In this state, when the control device 141 detects the start of the receiving process based on the signal input from the blanket cylinder position detector 143, first the air cylinder for the first doctor blade at time t3 prior to the start time t5 of the receiving process. A command is output to 144 such that the tip of the first doctor blade 121 contacts the intaglio plate 124. As a result, the tip of the first doctor blade 121 comes into contact with the intaglio plate 124 at time t3, and the scraping of the ink 2 attached to the portion other than the groove of the intaglio plate 124 by the tip of the first doctor blade 121 starts. Is done.

  Subsequently, the control device 141 precedes the reception process start time t5, based on the reference phase input from the phase detector 142, at time t4 when the rotation angle of the plate cylinder becomes θ2, the second doctor blade air cylinder 145. In response to this, a command is output to bring the tip of the second doctor blade 122 into contact with the intaglio plate 124. As a result, the tip of the second doctor blade 122 comes into contact with the intaglio plate 124 at time t4, and the scraping of the ink 2 attached to the portion other than the groove of the intaglio plate 124 by the tip of the second doctor blade 122 starts. Is done.

  Further, prior to the end time t10 of the receiving process, the control device 141 causes the front end portion of the first doctor blade 121 to move away from the plate cylinder 120 and be positioned at a close position with respect to the first doctor blade air cylinder 144 at time t8. Outputs a command. As a result, the tip of the first doctor blade 121 comes close to the intaglio plate 124 at time t8, and the scraping of the ink 2 attached to the portion other than the groove of the intaglio plate 124 by the tip of the first doctor blade 121 is completed. The ink 2 passes between the tip of the first doctor blade 121 and the intaglio plate 124, and a film of the ink 2 is formed.

  Subsequently, prior to the end time t10 of the receiving process, the control device 141, based on the reference phase input from the phase detector 142, at the time t9 when the rotation angle of the plate cylinder becomes θ2, the second doctor blade air cylinder 145. In response to this, a command is output to move the tip of the second doctor blade 122 away from the intaglio plate 124. As a result, the tip of the second doctor blade 122 is separated from the intaglio plate 124 at time t9, and the scraping of the ink 2 attached to the portion other than the groove of the intaglio plate 124 by the tip of the second doctor blade 122 is completed. The film of the ink 2 that has passed between the tip of the first doctor blade 121 and the intaglio 124 is maintained in a state where the surface of the intaglio 124 is covered.

  In this embodiment, the first doctor blade 121 constitutes a doctor blade, the phase detector 142 constitutes a phase detection means, the first doctor blade air cylinder 144 constitutes a doctor blade driving means, and a blanket. The cylinder 130 constitutes a member to be transferred, and the control device 141 constitutes a control means.

  Also in the operation method of the gravure printing machine and the gravure printing machine according to the present embodiment configured as described above, it is possible to obtain the same operational effects as the operation method of the gravure printing machine and the gravure printing machine according to the first embodiment described above. it can.

A gravure printer according to Embodiment 3 of the present invention and an operation method of the gravure printer will be described with reference to FIG.
In the first embodiment described above, an example in which the first doctor blade 121, the second doctor blade 122, and the scraper 123 are provided in the plate cylinder 120 has been shown. However, in the present embodiment, the first doctor blade 121 of the first embodiment described above is provided. An example in which only the second doctor blade 122 and the scraper 123 are provided in the plate cylinder 120 will be described. Other configurations are substantially the same as those of the first embodiment described above, and hereinafter, the same members are denoted by the same reference numerals, and redundant description will be omitted as appropriate, and different points will be mainly described.

  In the present embodiment, the scraper 123 can form a film of the ink 2 in accordance with the elimination of the first doctor blade 121 shown in FIG. 1 and the like, and supply (fill) the ink 2 as necessary. Configured to be able to.

  Further, the second doctor blade 122 is the only member that scrapes off the ink 2 adhering to the portions other than the grooves of the intaglio plate 124 with the rotation of the plate cylinder 120 from the intaglio plate 124.

  As shown in FIG. 8, the operating state (detaching operation) of the second doctor blade 122 and the scraper 123 is the same as the operating state in the first embodiment shown in FIG. Is omitted.

  In this embodiment, the second doctor blade 122 constitutes a doctor blade, the phase detector 142 constitutes phase detection means, the second doctor blade air cylinder 145 constitutes doctor blade driving means, and the blanket cylinder 130 Constitutes a member to be transferred, and the controller 141 constitutes a control means.

  According to the operation method of the gravure printing machine and the gravure printing machine according to the present embodiment configured as described above, in addition to the effect by the operation method of the gravure printing machine and the gravure printing machine according to the first embodiment or the second embodiment, the intaglio Since only the second doctor blade 122 is in contact with the member 124, the replacement frequency of the blade can be reduced and the life of the intaglio plate 124 can be extended.

  In the first to third embodiments described above, the example in which the intaglio plate 124 in which the groove of the wiring pattern as the recess is formed is mounted on the plate cylinder 120 is shown, but the present invention is limited to the above-described embodiment. Instead, a groove as a concave portion may be formed directly on the surface (plate surface) of the plate cylinder 120.

  In Embodiments 1 to 3 described above, the blanket cylinder 130 is used as a member to be transferred, the ink 2 is transferred from the plate cylinder 120 (intaglio plate 124) to the blanket cylinder 130, and then the ink 2 is transferred from the blanket cylinder 130 to the substrate 1. In this example, there is no blanket cylinder 130, the plate cylinder 120 is held so as to be in contact with the substrate 1, and the ink 2 is transferred directly from the plate cylinder 120 (intaglio plate 124) to the substrate 1. In that case, the base material 1 becomes a member to be transferred.

  In the first to third embodiments described above, an example in which the control device 141 grasps the rotation angle of the plate cylinder 120 based on the reference phase of the gravure printing machine 100 sent from the phase detector 142 has been shown. The detector 142 detects the phase of the plate cylinder 120 that rotates based on the reference phase of the gravure printing machine 100 or the phase of the blanket cylinder 130 that rotates based on the reference phase of the gravure printing machine 100, and detects the detected phase. It may be output.

  In the first to third embodiments described above, the surface of the intaglio plate 124 is covered with the ink 2 film during the period from the end of the receiving process to the next receiving process (for example, from the time t14 to the return to t3). Although the example of waiting while rotating the plate cylinder 120 in the covered state is shown, after the receiving process is finished, the surface of the intaglio plate 124 is covered with the ink 2 film, and then the process returns to the process at time t3. In the meantime, it is possible to stand by with the rotation of the plate cylinder 120 stopped. If the rotation of the plate cylinder 120 is stopped after the time t11 until returning to the processing at the time t3, the ink band 2d (see FIG. 5) formed on both sides of the scraper 123 (the first doctor blade 121 in the second embodiment). 6) and the consumption of ink 2 can be further suppressed.

  The present invention is suitable for application to a gravure printer and a method of operating a gravure printer.

DESCRIPTION OF SYMBOLS 1 Board | substrate 2 Ink 100 Gravure printing machine 110 Flat bed 120 Plate cylinder 121 1st doctor blade 122 2nd doctor blade 123 Scraper 124 Intaglio 130 Blanket cylinder 141 Control apparatus 142 Phase detector 143 Blanket cylinder position detector 144 For 1st doctor blade Air cylinder 145 Air cylinder for second doctor blade 146 Air cylinder for scraper

The operation method of the gravure printing machine according to the second invention is as follows:
A gravure plate cylinder provided with a recess filled with ink on the plate surface;
A doctor blade disposed so that the tip portion can move away from and touching the plate surface of the gravure plate cylinder;
In the operation method of the gravure printing machine for forming the functional pattern by the ink on the transferred member by the receiving process of transferring the ink filled in the concave portion to the transferred member contacting the gravure plate cylinder,
The scraper is provided on the upstream side in the rotational direction of the gravure plate cylinder from the doctor blade, and has a scraper disposed at an adjacent position having a gap with the plate surface of the gravure plate cylinder,
When the receiving step is not performed, an ink film having a thickness corresponding to the gap covering the concave portion of the gravure plate cylinder is formed by the scraper, and the tip of the doctor blade is separated from the plate surface of the gravure plate cylinder The first step,
A second step of removing the ink adhering to a portion other than the concave portion by bringing the tip of the doctor blade into contact with the plate surface of the gravure plate cylinder when performing the receiving step;
It is characterized by having .

Further, the operation method of the gravure printing machine according to the third invention is the operation method of the gravure printing machine according to the first or second invention,
While bringing the tip of the doctor blade into contact with the plate surface of the gravure plate cylinder in accordance with the timing when the receiving step is started from the state of the first step,
It characterized <br/> thereby separating the tip of the doctor blade to match the state of the second step with the timing when the receiving process is completed from the plate surface of the gravure plate cylinder.

Further, the operation method of the gravure printing machine according to the fourth invention is the operation method of the gravure printing machine according to the first or second invention,
In the first step, the tip end portion of the doctor blade is repeatedly brought into contact with and separated from the plate surface of the gravure plate cylinder .

A gravure printing machine according to the fifth invention is
A gravure plate cylinder provided with a recess filled with ink on the plate surface;
A doctor blade disposed so that the tip portion can move away from and touching the plate surface of the gravure plate cylinder;
In the gravure printing machine for forming the functional pattern by the ink on the member to be transferred by the receiving process of transferring the ink filled in the concave portion to the member to be transferred that contacts the gravure plate cylinder,
Phase detection means for detecting a reference phase of the gravure printing machine;
Doctor blade drive means for moving the tip of the doctor blade against and away from the plate surface of the gravure plate cylinder; and
Based on the reference phase detected by the phase detecting means, the doctor blade driving means is controlled so that the tip of the doctor blade is separated from the plate surface of the gravure plate cylinder when the receiving step is not performed. On the other hand, control means for controlling the doctor blade driving means so that the tip of the doctor blade comes into contact with the plate surface of the gravure plate cylinder when performing the receiving step;
It is characterized by having .

A gravure printing machine according to the sixth invention is
A gravure plate cylinder provided with a recess filled with ink on the plate surface;
A doctor blade disposed so that the tip portion can move away from and touching the plate surface of the gravure plate cylinder;
In the gravure printing machine for forming the functional pattern by the ink on the member to be transferred by the receiving process of transferring the ink filled in the concave portion to the member to be transferred that contacts the gravure plate cylinder,
The scraper is provided on the upstream side in the rotational direction of the gravure plate cylinder from the doctor blade, and has a scraper disposed at an adjacent position having a gap with the plate surface of the gravure plate cylinder,
Phase detection means for detecting a reference phase of the gravure printing machine;
Doctor blade drive means for moving the tip of the doctor blade against and away from the plate surface of the gravure plate cylinder; and
Based on the reference phase detected by the phase detection means, the gravure plate is formed by the scraper by separating the tip of the doctor blade from the plate surface of the gravure plate cylinder when the receiving step is not performed. The doctor blade driving means is controlled so as to maintain the ink film having the thickness corresponding to the gap covering the concave portion of the plate surface of the cylinder, while the tip end portion of the doctor blade is Control means for controlling the doctor blade driving means so as to come into contact with the plate surface of the gravure plate cylinder;
It is characterized by having .

As shown in FIG. 3, in this embodiment, the control device 141 of the gravure printing machine 100 detects a phase (hereinafter referred to as a reference phase) that serves as a reference for the operation of each device of the gravure printing machine 100. 142 and an air cylinder for a first doctor blade that moves the first doctor blade 121 against and away from the plate cylinder 120 while inputting a detection signal from a blanket cylinder position detector 143 that detects the position of the blanket cylinder 130. 144, the second doctor blade air cylinder 145 that moves the second doctor blade 122 toward and away from the plate cylinder 120, and the scraper air cylinder 146 that moves the scraper 123 close to and away from the plate cylinder 120. It is configured to output a signal.

Claims (6)

A gravure plate cylinder provided with a recess filled with ink on the plate surface;
A doctor blade disposed so that the tip portion can move away from and touching the plate surface of the gravure plate cylinder;
In the operation method of the gravure printing machine for forming the functional pattern by the ink on the transferred member by the receiving process of transferring the ink filled in the concave portion to the transferred member contacting the gravure plate cylinder,
When not performing the receiving step, the first step of forming the ink film covering the concave portion of the plate surface of the gravure plate cylinder by separating the tip of the doctor blade from the plate surface of the gravure plate cylinder;
A second step of removing the ink adhering to a portion other than the concave portion by bringing the tip of the doctor blade into contact with the plate surface of the gravure plate cylinder when performing the receiving step. Operation method of gravure printing machine. While bringing the tip of the doctor blade into contact with the plate surface of the gravure plate cylinder in accordance with the timing when the receiving step is started from the state of the first step,
The method of operating a gravure printing machine according to claim 1, wherein the tip of the doctor blade is separated from the plate surface of the gravure plate cylinder in accordance with the timing when the receiving step is completed from the state of the second step. . 3. The operation method of a gravure printing machine according to claim 1, wherein in the first step, the tip of the doctor blade is repeatedly brought into contact with and separated from the plate surface of the gravure plate cylinder. The gravure printing machine is provided upstream of the doctor blade in the rotational direction of the gravure plate cylinder, and a front end portion of the gravure plate cylinder has a gap between the gravure plate cylinder and the gravure plate cylinder. An upstream doctor blade disposed so as to be movable between a contact position that contacts the printing plate;
In the first step, the tip of the upstream doctor blade is positioned at the close position to form an ink film having a thickness corresponding to the gap on the surface of the gravure plate cylinder,
4. The method of operating a gravure printing machine according to claim 3, wherein in the second step, a tip portion of the upstream doctor blade is positioned at the contact position to remove ink adhering to a portion other than the concave portion. . The gravure printing machine is
An upstream doctor blade disposed upstream of the doctor blade in the rotational direction of the gravure plate cylinder, and a tip portion of the gravure plate cylinder arranged to move away from and contact with the plate surface of the gravure plate cylinder,
A scraper disposed on the upstream side in the rotational direction of the gravure plate cylinder from the upstream doctor blade, and a scraper disposed at a proximity position of a tip portion of the gravure plate cylinder with the plate surface of the gravure plate cylinder,
In the first step, the scraper forms an ink film having a thickness corresponding to the gap on the plate surface of the gravure plate cylinder,
The tip of the upstream doctor blade is separated from the gravure plate cylinder more than the gap with the gravure plate cylinder of the scraper, and the tip of the upstream doctor blade is repeatedly opposed to the plate surface of the gravure plate cylinder. Make contact and separation,
The gravure printing machine according to claim 3, wherein in the second step, the tip of the upstream doctor blade is brought into contact with the gravure plate cylinder to remove ink adhering to a portion other than the concave portion. how to drive. A gravure plate cylinder provided with a recess filled with ink on the plate surface;
A doctor blade disposed so that the tip portion can move away from and touching the plate surface of the gravure plate cylinder;
In the gravure printing machine for forming the functional pattern by the ink on the member to be transferred by the receiving process of transferring the ink filled in the concave portion to the member to be transferred that contacts the gravure plate cylinder,
Phase detection means for detecting a reference phase of the gravure printing machine;
Doctor blade drive means for moving the tip of the doctor blade against and away from the plate surface of the gravure plate cylinder; and
Based on the phase detection means, when the receiving step is not performed, the blade driving means is controlled so that the tip of the doctor blade is separated from the plate surface of the gravure plate cylinder, while the receiving step is performed. And a control means for controlling the doctor blade drive means so that the tip of the doctor blade comes into contact with the plate surface of the gravure plate cylinder.

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