JP5556110B2 - Ink pan and finisher roll combination, ink coating apparatus and ink coating method - Google Patents

Description

  The present invention relates to a combination of an ink pan and a finisher roll provided with an ink pan and a finisher roll that supplies ink in the ink pan to a printing plate cylinder. The present invention also relates to an ink coating apparatus and an ink coating method having a combination of the ink pan and the finisher roll.

  In a coating apparatus, generally, ink supplied from an ink tank or the like is stored in an ink pan, and ink stored in the ink pan is supplied to a printing plate cylinder via a finisher roll.

  In recent years, the speed of printing has increased, and the rotation speed of the printing plate cylinder has increased, which has caused a problem that ink adhering to the printing plate cylinder is scattered. If the ink is left on the printing plate cylinder with the ink attached, the attached ink dries and adheres to the printing plate cylinder. When ink adheres to the printing plate cylinder, the printing plate cylinder may become clogged and the printing quality may be reduced.

  In order to solve such a problem, for example, Patent Document 1 proposes a structure in which a doctor blade is provided so as to be in sliding contact with the side surface of the printing plate cylinder, and the ink attached to the printing plate cylinder is scraped by the doctor blade. . Patent Document 2 proposes a structure in which a doctor blade is provided on an anilox roll interposed between a finisher roll and a printing plate cylinder, and the ink attached to the anilox roll is scratched by this doctor blade.

JP 2006-272710 A JP 61-61857 A

  By the way, even in the finisher roll immersed in the ink in the ink pan, the ink may adhere to the side surface. When a large amount of ink adheres to the side surface of the finisher roll, the convection of ink in the ink pan may be hindered by the adhered ink. Therefore, in order to keep the printing quality constant, it is necessary to scrape not only the ink attached to the printing plate cylinder but also the ink attached to the finisher roll.

  The present invention has been made in consideration of the above points, and provides an assembly of an ink pan and a finisher roll that can scrape ink adhering to the finisher roll with a simple configuration. Objective.

  The present invention includes an ink pan for containing ink, and a finisher roll that penetrates into the ink pan and supplies ink of the ink pan to the printing plate cylinder. The ink pan is applied to both sides of the finisher roll. A combination of an ink pan and a furnisher roll, characterized in that a pair of side squeegees are provided in contact with each other to scrape the ink on both sides.

  In the combination of the ink pan and the finisher roll according to the present invention, a central annular groove may be formed in the outer periphery of the finisher roll, and provided in the outer periphery of the finisher roll in the ink pan. A central squeegee that penetrates into the central annular groove and scrapes the ink in the central annular groove may be further provided.

  In the combination of the ink pan and the finisher roll according to the present invention, the abutment portion that abuts on both sides of the finisher roll of the pair of side squeegees is inclined with respect to the axial direction of the finisher roll. You may extend toward both sides.

  In the combination of the ink pan and the finisher roll according to the present invention, the entire pair of side squeegees may be immersed in the ink of the ink pan.

  In the combination of the ink pan and the finisher roll according to the present invention, the central squeegee may be entirely immersed in the ink of the ink pan.

  The present invention provides an apparatus for applying ink to a substrate, comprising: a conveyance roller that supports and conveys the substrate; and an ink application unit that applies ink to the substrate conveyed by the conveyance roller. The ink application means is a combination of a printing plate cylinder for applying ink to a printing material, and an ink pan and a finisher roll for supplying ink to the printing plate cylinder, the combination of the ink pan and the finisher roll described above An ink coating apparatus characterized by comprising a body.

  The present invention relates to a method of applying ink to a printing material, a step of preparing the printing material, a step of conveying the printing material by a conveying roller, and supplying ink from an ink pan to a printing plate cylinder by a finisher roll. And a step of applying ink to a substrate by a printing plate cylinder, and supplying ink from an ink pan to the printing plate cylinder by a finisher roll. The ink application method is characterized by being scratched by a pair of side squeegees provided in the ink pan so as to come into contact with both side surfaces of the finisher roll.

  In the ink application method according to the present invention, a center annular groove may be formed on the outer periphery of the finisher roll, and the step of supplying the ink of the ink pan to the printing plate cylinder by the finisher roll, The ink in the central annular groove may be scratched by a central squeegee provided in the ink pan so as to enter the central annular groove of the finisher roll.

  An ink pan and finisher roll assembly according to the present invention includes an ink pan for storing ink, and a finisher roll that enters the ink pan and supplies ink to the printing plate cylinder. A pair of side squeegees are provided that come into contact with both sides of the shear roll and scrape ink on the sides. For this reason, every time the finisher roll makes one revolution, the ink attached to both side surfaces of the finisher roll can be scratched by the pair of side squeegees. This can prevent the ink from adhering to both side surfaces of the finisher roll.

FIG. 1 is a side view showing a combination of an ink pan and a finisher roll in the first embodiment of the present invention. FIG. 2 is a perspective view showing an ink pan according to the first embodiment of the present invention. FIG. 3 is a front view showing a state in which a pair of side squeegees abut on both side surfaces of the finisher roll in the first embodiment of the present invention. 4 (a) is a longitudinal sectional view showing a state in which the combination of the ink pan and the finisher roll shown in FIG. 1 is viewed from the IV-IV direction and the state where the finisher roll is stopped. FIG.4 (b) is a longitudinal cross-sectional view which shows the side squeegee of the state which the finisher roll shown to Fig.4 (a) is rotating. FIG. 5 is a side view showing a combination of an ink pan and a finisher roll in the second embodiment of the present invention. FIG. 6 is a perspective view showing an ink pan according to the second embodiment of the present invention. FIG. 7 is a front view showing a central squeegee provided to enter into the central annular groove of the finisher roll in the second embodiment of the present invention. FIG. 8 is a side view showing a combination of an ink pan and a finisher roll in the third embodiment of the present invention. FIG. 9 is a diagram showing an ink coating apparatus according to the embodiment of the present invention.

First Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 4 and FIG.

First, the entire ink coating apparatus 40 in which the combined body 10 of the ink pan and the finisher roll is incorporated will be described. As shown in FIGS. 1 and 9, the coating device 40 includes a transport roller 42 that supports and transports the substrate 41, and an ink application unit that applies the ink 30 to the substrate 41 transported by the transport roller 42. 43. Among these, the ink application means 43 intrudes into the printing plate cylinder 33 for applying the ink 30 to the substrate 41, the ink pan 12 for storing the ink 30 supplied to the printing plate cylinder 33, the ink pan 12, and the ink pan 12. And a finisher roll 11 for supplying the ink 30 to the printing plate cylinder 33 side.
Among these, the ink pan 12 for storing the ink 30 and the finisher roll 11 which is immersed in the ink 30 of the ink pan 12 and supplies the ink 30 to the printing plate cylinder 33 side are combined with the ink pan and the finisher roll 10. Is configured.

  Next, the combination 10 of the ink pan and the finisher roll will be described. As shown in FIGS. 1 and 9, the combination 10 of the ink pan and the finisher roll includes an ink pan 12 that stores the ink 30 supplied from the ink tank 44 through the ink supply pipe 31 as described above, and an outer periphery. 17 has a central annular groove 17a, and is provided with a finisher roll 11 that enters the ink pan 12 and supplies the ink 30 of the ink pan 12 to the printing plate cylinder 33. As shown in FIG. 1, a part of the finisher roll 11 is immersed in the ink 30 in the ink pan 12. Further, as shown in FIG. 1, the supply pipe 31 is provided so that the outlet portion 31 a enters the ink 30 of the main body 13 of the ink pan 12, whereby the ink 30 in the supply pipe 31 is separated from the outside air. Contact is prevented.

  As shown in FIGS. 1 and 2, a pair of side squeegees 21 are provided in the ink pan 12 to abut against both side surfaces 18 of the finisher roll 11 and scrape the ink 30 attached to the both side surfaces 18. ing. As shown in FIGS. 1 and 2, each side squeegee 21 is fixed to the bottom surface 12a of the ink pan 12 via a fixing tool, for example, a bolt 22, and extends upward from the fixing portion 21b. It comprises a main body portion 21 a that abuts on both side surfaces 18 of the shear roll 11. In the present embodiment, each side squeegee 21 is provided such that the main body 21 a protrudes upward from the liquid surface 30 a of the ink 30 as shown in FIG. 1.

  As shown in FIGS. 1 and 2, the ink pan 12 is partitioned into a main body 13 and a discharge portion 14 by a weir 15. Of these, the finisher roll 11 is immersed in the main body portion 13, and the discharge portion 14 can receive the ink 30 flowing from the main body portion 13 beyond the upper end 15 a of the weir 15. By providing the weir 15 in the ink pan 12 in this way, the height of the liquid surface 30 a of the ink 30 stored in the main body 13 can be always kept at the same height as the upper end 15 a of the weir 15. The ink 30 that has flowed into the discharge section 14 beyond the upper end 15a of the weir 15 is returned to the ink tank 44 through the discharge pipe.

  Next, the pair of side squeegees 21 will be described in detail with reference to FIGS. As shown in FIG. 3, the main body portions 21 a of the pair of side squeegees 21 are provided on the ink pan 12 so as to abut on both side surfaces 18 of the finisher roll 11. In this case, as shown in FIG. 4A in a state where the finisher roll 11 is stopped, the main body portions 21 a of the pair of side squeegees 21 are inclined with respect to the axial direction of the finisher roll 11. The finisher roll 11 extends toward both side surfaces 18. Here, the angle θ formed by the line X parallel to the axis of the finisher roll 11 and the main body 21 a of the pair of side squeegees 21 depends on the rotational speed of the finisher roll 11 and the material of the side squeegee 21. Although it is set as appropriate, it is preferably in the range of 0 <θ <30, for example, 5 degrees. As described above, the main body portions 21a of the pair of side squeegees 21 extend toward the both side surfaces 18 of the finisher roll 11 so as to be inclined with respect to the axial direction of the finisher roll 11, thereby FIG. When the finisher roll 11 rotates in the arrow L direction of (b), the main body portions 21a of the pair of side squeegees 21 are inclined in the direction of the arrow L. The impact given to the both side surfaces 18 of the finisher roll 11 from the portion 21a can be reduced.

  As will be described later, the main body portions 21a of the pair of side squeegees 21 are relatively thin, for example, the thickness thereof is 0.2 mm. For this reason, as shown in FIG. 4B, while the finisher roll 11 is rotating in the direction of the arrow L, the body portions 21a of the pair of side squeegees 21 are disposed on both side surfaces 18 of the finisher roll 11. The abutting portion 21 c that abuts warps according to the rotation of the finisher roll 11. Thereby, during the rotation of the finisher roll 11, the impact of the main body portions 21 a of the pair of side squeegees 21 on the both side surfaces 18 of the finisher roll 11 can be further alleviated.

  The material of the finisher roll 11 is not particularly limited. For example, the finisher roll 11 can be formed of stainless steel. The surface of the finisher roll 11 may be appropriately subjected to surface treatment such as plating according to the application of the coating apparatus. The material of the pair of side squeegees 21 is not particularly limited, and for example, stainless steel, PET material (polyethylene terephthalate), other plastic materials, and the like can be used.

The dimensions of the finisher roll 11 are not particularly limited. For example, the finisher roll 11 has a diameter of 82 mm, a thickness of 6 mm, a central annular groove 17a having a width of 3 mm, and a depth of 2 mm.
The dimensions of the ink pan 12 and the pair of side squeegees 21 provided in the ink pan 12 are appropriately set according to the dimensions of the finisher roll. For example, the width s _{1 of the} ink pan 12 is 80 mm, The length s ₂ is 75 mm, the length s ₃ of the discharge portion 14 is 15 mm, the height s ₄ of the weir 15 is 20 mm, the length s ₅ of the body portion 21a of the side squeegee 21 is 20 mm, and the width s ₆ is 5 mm. It has become.

  Furthermore, the type of the ink 30 is not particularly limited, and examples of the ink 30 include known inks used in a coating apparatus. However, the ink that is easily dried and solidified exhibits the effect of the present invention. Particularly preferred. For example, a colored ink obtained by dissolving or dispersing a known dye or pigment in a solvent or dispersant together with a binder resin can be used.

  Examples of pigments or dyes include inorganic pigments such as carbon black, titanium white, zinc white, dial, bitumen, cadmium red; azo pigments, lake pigments, anthraquinone pigments, quinacridone pigments, phthalocyanine pigments, isoindolinone pigments, dioxazines Organic pigments such as pigments; metal powder pigments such as aluminum powder and bronze powder; pearlescent pigments such as titanium oxide-coated mica and bismuth oxide chloride; fluorescent pigments; These can be used individually or in mixture of 2 or more types. Further, it may further contain a filler such as silica, an extender pigment such as organic beads, a neutralizing agent, and a surfactant.

  Examples of the binder resin include acrylic resins, styrene resins, polyester resins, urethane resins, acrylic urethane resins, chlorinated polyolefin resins, vinyl chloride-vinyl acetate copolymer resins, polyvinyl butyral resins, and alkyd resins. Examples thereof include resins, petroleum resins, ketone resins, epoxy resins, melamine resins, fluorine resins, silicon resins, fiber derivatives, rubber resins, and the like. These resins may be used alone or in admixture of two or more.

  In the ink 30 described above, if the ink is dried and solidified due to the volatilization of the solvent and the bonding between the binder resins, it is not easy to redissolve the dried and solidified ink even if a solvent or a dispersant is added. . For this reason, when the ink 30 adhering to the both side surfaces 18 of the finisher roll 11 is dried and solidified and fixed to the finisher roll 11, much labor is required to remove the fixed ink 30. Therefore, in the combination 10 of the ink pan and the finisher roll, each time the finisher roll 11 is rotated, the ink 30 adheres to the side faces 18 so that the ink 30 does not adhere to the both side faces 18 of the finisher roll 11. It is important to scratch the ink 30.

  Next, the operation of the present embodiment having such a configuration will be described. Here, the operation of applying the ink 30 to the substrate 41 by the ink application device 40 will be described, and the ink 30 in the ink pan 12 is being supplied to the printing plate cylinder 33 via the finisher roll 11. The action of the ink 30 adhering to the both side surfaces 18 of the finisher roll 11 being scratched by the pair of side squeegees 21 provided in the ink pan 12 will be described.

  First, as shown in FIG. 9, a substrate 41 to be coated with the ink 30 is prepared by the ink coating device 40. Next, the printing material 41 is conveyed by the conveying roller 42 until the printing material 41 reaches the printing plate cylinder 33 of the ink application unit 43.

  On the other hand, as shown by an arrow A in FIG. 1, the ink 30 is supplied from the ink tank 44 to the main body 13 of the ink pan 12 through the supply pipe 31. Here, the flow rate of the ink 30 per minute is set to be larger than the amount of the ink 30 supplied per minute to the printing plate cylinder 33 via the finisher roll 11, for example, 70 ml / min. It has become.

  The ink 30 sent to the main body portion 13 of the ink pan 12 is stored in the main body portion 13 as shown in FIG. A rotating finisher roll 11 is immersed in the ink 30 stored in the main body 13, and the ink 30 is supplied to the printing plate cylinder 33 via the finisher roll 11. Then, as shown in FIG. 9, the ink 30 is applied to the printing material 41 by the printing plate cylinder 33. Here, as described above, the flow rate per minute of the ink 30 sent to the main body 13 is larger than the amount of the ink 30 supplied per minute to the printing plate cylinder 33 via the finisher roll 11. Therefore, a part of the ink 30 stored in the main body portion 13 flows out toward the discharge portion 14 beyond the upper end 15 a of the weir 15 of the main body portion 13. In this case, the height of the liquid surface 30a of the ink 30 stored in the main body 13 is determined by the height of the upper end 15b of the weir 15a. For this reason, the height of the liquid surface 30a of the ink 30 stored in the main body 13 is always kept at the same height as the upper end 15b of the weir 15a.

  As described above, the rotating finisher roll 11 is immersed in the ink 30 in the main body 13, and the rotating finisher roll 11 causes the ink 30 in the main body 13 to convect in the main body 13. doing. This prevents the surface of the ink 30 in the main body 13 from drying or sticking.

  During this time, the main body portions 21a of the pair of side squeegees 21 provided on the main body portion 13 of the ink pan 12 are in contact with both side surfaces 18 of the finisher roll 11, so that the finisher roll 11 is one piece. Each time it rotates, the ink 30 adhering to the both side surfaces 18 of the finisher roll 11 is scratched by the main body portions 21 a of the pair of side squeegees 21. Thereby, it is possible to prevent the ink 30 adhering to the both side surfaces 18 of the finisher roll 11 from being dried and fixed. Further, it is possible to prevent the convection of the ink 30 in the main body portion 13 of the ink pan 12 from being inhibited by the ink 30 fixed to the both side surfaces 18.

  As described above, according to the present embodiment, the combination 10 of the ink pan and the finisher roll has the main body portion 13 of the ink pan 12 that stores the ink 30, and the central annular groove 17a on the outer periphery 17. A finisher roll 11 that is immersed in the ink 30 of the main body 13 of the ink pan 12 and supplies the ink 30 to the printing plate cylinder 33 is provided. A pair of side squeegees 21 that abut against the side surfaces 18 and scrape the ink 30 adhering to the side surfaces 18 are provided. For this reason, each time the finisher roll 11 rotates, the ink 30 adhering to the both side surfaces 18 of the finisher roll 11 can be scratched by the pair of side squeegees 21. Thereby, it is possible to prevent the ink 30 from adhering to the both side surfaces 18 of the finisher roll 11 with a simple configuration.

  Further, according to the present embodiment, the main body portions 21 a of the pair of side squeegees 21 extend toward both side surfaces 18 of the finisher roll 11 so as to be inclined with respect to the axial direction of the finisher roll 11. . For this reason, the impact which the main-body part 21a of a pair of side squeegee 21 gives to the both side surfaces 18 of the finisher roll 11 can be relieved while the finisher roll 11 rotates. Thereby, durability and reliability of the finisher roll 11 and the pair of side squeegees 21 can be improved.

By the way, when it is not prevented that the ink 30 adheres to the both side surfaces 18 of the finisher roll 11, the ink 30 fixed to the both side surfaces 18 of the finisher roll 11 and dried and solidified is used as a base point before solidification. The ink 30 may be scattered around the finisher roll 11.
On the other hand, according to the present embodiment, as described above, the pair of side squeegees 21 prevent the ink 30 from adhering to the both side surfaces 18 of the finisher roll 11 and drying and solidifying. . For this reason, the ink 30 before solidification does not scatter around the finisher roll 11 with the ink 30 dried and solidified on the both side surfaces 18 of the finisher roll 11 as a base point. As a result, when the thickness of the finisher roll 11 and the printing plate cylinder 33 is smaller than the width of the substrate, for example, the thickness of the finisher roll 11 and the printing plate cylinder 33 is 6 mm, respectively. Even when the width of the printed material 41 is, for example, 300 mm, it is possible to prevent the ink 30 adhering to the both side surfaces 18 of the finisher roll 11 from scattering and the ink 30 from adhering to the printed material. .

In the present embodiment, an example is shown in which each side squeegee 21 is provided in the ink pan 12 and its main body 21 a protrudes upward from the liquid surface 30 a of the ink 30. However, the present invention is not limited to this, and each side squeegee 21 may be provided so as to be immersed in the ink pan 12 and entirely in the ink 30 of the main body 13. As a result, it is possible to prevent the ink 30 adhering to the surface of each side squeegee 21 from drying, thereby preventing the ink 30 from adhering to the surface of each side squeegee 21.
Moreover, in this Embodiment, the example in which the center annular groove 17a was formed in the outer periphery 17 of the finisher roll 11 was shown. However, as apparent from the form of the pair of side squeegees 21, the effects of the present embodiment are realized even when the central annular groove 17 a is not formed on the outer periphery 17 of the finisher roll 11. The

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. Here, FIG. 5 is a side view showing the combination of the ink pan and the finisher roll in the second embodiment of the present invention, and FIG. 6 shows the ink pan in the second embodiment of the present invention. FIG. 7 is a front view showing a central squeegee provided to enter the central annular groove of the finisher roll in the second embodiment of the present invention.

  The second embodiment shown in FIGS. 5 to 7 further includes a central squeegee that penetrates into the central annular groove provided on the outer periphery of the finisher roll and scrapes the ink in the central annular groove. The only difference is the provision, and the other configuration is substantially the same as that of the first embodiment shown in FIGS. 1 to 4 and 9. In the second embodiment shown in FIG. 5 to FIG. 7, the same parts as those in the first embodiment shown in FIG. 1 to FIG. 4 and FIG.

As shown in FIG. 5, a central squeegee 24 that penetrates into the central annular groove 17 a provided on the outer periphery 17 of the finisher roll 11 and scrapes the ink 30 in the central annular groove 17 a into the main body 13 of the ink pan 12. Is provided. As shown in FIGS. 6 and 7, the central squeegee 24 includes a fixing portion 24b fixed to the bottom surface 12a of the ink pan 12 via a fixing tool, for example, a bolt 25, and a main body portion 24a extending upward from the fixing portion 24b. And a protruding portion 24c that protrudes from the upper end of the main body portion 24a and enters the central annular groove 17a provided on the outer periphery 17 of the finisher roll 11. In this case, the length s ₉ of the projecting portion 24c of the central squeegee 24, the tip of the protrusion 24c is a size that does not contact the bottom surface of the central annular groove 17a of the pyrimidin Tsu Shah roll 11.

  In the present embodiment, as shown in FIG. 5, the central squeegee 24 is provided in the ink pan so that the whole is immersed in the ink 30 of the main body 13. As a result, it is possible to prevent the ink 30 attached to the surface of the central squeegee 24 from drying, thereby preventing the ink 30 from adhering to the surface of the central squeegee 24.

In the present embodiment, the material of the central squeegee 24 is not particularly limited. For example, stainless steel, PET material (polyethylene terephthalate), other plastic materials, and the like can be used. Further, the size of the central squeegee 24 is not particularly limited, and is appropriately designed according to the size of the finisher roll 11. For example, the length s ₇ of the main body 21a of the central squeegee 24 is 30 mm, the width s ₈ is 8 mm, the length s ₉ of the protrusion 24c is 2 mm, and the width s ₁₀ is 2 mm.

  Next, the operation of the present embodiment having such a configuration will be described. Here, while the ink 30 in the ink pan 12 is being supplied to the printing plate cylinder 33 via the finisher roll 11, the central squeegee 24 provided in the ink pan 12 causes the outer periphery 17 of the finisher roll 11 to be positioned. The action of scratching the ink 30 in the central annular groove 17a provided will be described.

  When a part of the rotating finisher roll 11 comes out of the ink 30 stored in the main body 13 of the ink pan 12 (in the case of arrow C shown in FIG. 5), the center of the part of the finisher roll 11 is Ink 30 is filled in the annular groove 17a. Thereafter, when the part of the finisher roll 11 comes into contact with the printing plate cylinder 33 (in the case of the arrow D shown in FIG. 5), the ink 30 filled in the central annular groove 17 a of the part is applied to the printing plate cylinder 33. Supplied. At this time, the ink 30 filled in the part of the central annular groove 17a is not completely supplied to the printing plate cylinder 33, and some ink 30 remains in the part of the central annular groove 17a. There is.

  Thereafter, when the part of the finisher roll 11 comes in the vicinity of the central squeegee 24 provided in the ink pan 12 (in the case of the arrow E shown in FIG. 5), it remains in the central annular groove 17a of the part. The ink 30 is scraped by the protrusion 24c of the central squeegee 24 that enters the central annular groove 17a. Thereafter, while the part of the finisher roll 11 is immersed in the ink 30 of the ink pan 12, the ink 30 is newly filled into the central annular groove 17 a of the part of the finisher roll 11. After the new ink 30 is filled in this way, a part of the finisher roll 11 comes out again from the ink 30 stored in the main body 13 of the ink pan 12 (arrow C shown in FIG. 5). When).

  As described above, according to this embodiment, the ink 30 in the central annular groove 17a is introduced into the main body portion 13 of the ink pan 12 and enters the central annular groove 17a provided on the outer periphery 17 of the finisher roll 11. A scratching central squeegee 24 is provided. For this reason, the ink 30 remaining without being supplied to the printing plate cylinder 33 out of the ink 30 filled in the central annular groove 17 a of the finisher roll 11 can be scraped off by the central squeegee 24. . As a result, new ink 30 can always be supplied from the ink pan 12 to the finisher roll 11, whereby the print quality can always be kept constant.

  In the present embodiment, an example in which the central squeegee 24 is provided so as to be immersed in the ink 30 of the main body 13 of the ink pan 12 is shown. However, the present invention is not limited to this. For example, the central squeegee 24 is moved upward from the liquid level 30 a of the ink 30 stored in the main body 13 of the ink pan 12 so that the central squeegee 24 is protruded upward from the ink pan 12. It may be provided inside.

  In each of the above embodiments, an example in which the pair of side squeegees 21 and the central squeegee 24 is fixed to the bottom surface 12a of the ink pan 12 by a fixing tool is shown. However, the target for fixing the pair of side squeegee 21 and the central squeegee 24 is not limited to the bottom surface 12a of the ink pan 12, and the side squeegee 21 and the central squeegee 24 are fixed to the side surface of the ink pan 12 or the weir 15 or the like. May be. Further, not only the target for fixing the pair of side squeegee 21 and central squeegee 24 but also the position for fixing the pair of side squeegee 21 and central squeegee 24 is not particularly limited. 12. Depending on the dimensions of the side squeegee 21 and the central squeegee 24, the side squeegee 21 and the central squeegee 24 can be provided at desired positions in the ink pan 12.

Third Embodiment Next, a third embodiment of the present invention will be described with reference to FIG. Here, FIG. 8 is a side view showing a combination of an ink pan and a finisher roll in the third embodiment of the present invention.

  The third embodiment shown in FIG. 8 is different only in the arrangement of the pair of side squeegees and the central squeegee provided in the ink pan 12, and other configurations are shown in FIGS. 1 to 4 and FIG. This is substantially the same as the first embodiment and the second embodiment shown in FIGS. In the third embodiment shown in FIG. 8, the same parts as those in the first embodiment shown in FIGS. 1 to 4 and 9 and the second embodiment shown in FIGS. Detailed description will be omitted.

  As shown in FIG. 8, the pair of side squeegees 21 are provided on the bottom surface 12 a of the ink pan 12 so that the whole is immersed in the ink 30 of the main body 13 of the ink pan 12. As a result, it is possible to prevent the ink 30 adhering to the surface of each side squeegee 21 from drying, thereby preventing the ink 30 from adhering to the surface of each side squeegee 21.

  Further, as shown in FIG. 8, the pair of side squeegees 21 are disposed on the bottom surface 12a of the ink pan 12 on the exit side (right side in FIG. 8) of the rotating finisher roll 11 of the main body 13. It is provided in contact with both side surfaces 18. This makes it possible to reduce the amount of ink 30 adhering to both side surfaces 18 of the finisher roll 11 when the finisher roll 11 exits the ink 30 of the ink pan 12. Accordingly, it is possible to prevent the ink 30 attached to the finisher roll 11 from being scattered around the finisher roll 11. For this reason, when the thickness of the finisher roll 11 and the printing plate cylinder 33 is smaller than the width of the printing material, for example, the thickness of the finishing roll 11 and the printing plate cylinder 33 is 6 mm, respectively. Even when the width of 41 is, for example, 300 mm, it is possible to prevent the ink 30 adhering to the both side surfaces 18 of the finisher roll 11 from scattering and adhering to the substrate.

  As shown in FIG. 8, the central squeegee 24 is provided on the bottom surface 12 a of the ink pan 12 so that the whole is immersed in the ink 30 of the main body 13 of the ink pan 12. The central squeegee 24 is provided on the bottom surface 12a of the ink pan 12 so as to enter the central annular groove 17a of the finisher roll 11 on the inlet side (left side in FIG. 8) of the rotating finisher roll 11 in the main body 13. It has been. As a result, it is possible to secure a longer time for supplying new ink 30 in the main body 13 to the central annular groove 17a of the finisher roll 11.

  In each of the above embodiments, the example in which the ink 30 is directly supplied from the finisher roll 11 to the printing plate cylinder 33 has been described. However, the present invention is not limited to this, and one or two or more sub-rolls (not shown) are provided between the finisher roll 11 and the printing plate cylinder 33, and the printing plate cylinder 33 extends from the finisher roll 11. Alternatively, the ink 30 may be supplied through these sub-rolls.

  In each of the above-described embodiments, the ink application device 40 includes an ink pan / furnisher roll combination 10, an ink supply pipe 31, an ink discharge pipe 32, and an ink tank 44. At this position, there is a filter for removing ink solidified material that may be generated during the circulation, and debris that has entered the ink circulation path through the substrate 41, the printing plate cylinder 33, the finisher roll 11, and the like. You may have. For example, as shown in FIG. 9, a dust removal filter 45 that removes foreign matter such as debris and wood debris of the dried ink 30 can be provided in the vicinity of the ink tank 44. The specific configuration of the dust removal filter 45 is not particularly limited. For example, the dust removal filter 45 can be configured using a colander, a net, an industrial stocking, or the like. By such a dust removal filter 45, preferably, waste having a dimension of 0.1 mm or more is removed from the waste mixed in the ink circulation path.

DESCRIPTION OF SYMBOLS 10 Combination of ink pan and finisher roll 11 Finisher roll 12 Ink pan 12a Bottom surface of ink pan 13 Ink pan main body 14 Ink pan discharge portion 15 Ink pan weir 15a Upper end of weir 17 Outer periphery of finisher roll 17a Central annular groove 18 Side of the finisher roll 21 Side squeegee 21a Side squeegee main body 21b Side squeegee fixing part 21c Side squeegee abutting part 22 Bolt 24 Central squeegee 24a Central squeegee main part 24b Central squeegee fixed part 24c Projection part of central squeegee 25 Bolt 30 Ink 30a Ink liquid level in main body part 30b Ink liquid level in discharge part 31 Supply pipe 31a Outlet part of supply pipe 32 Discharge pipe 33 Printing plate cylinder 40 Coating device 41 Printed object 42 Conveyance B Ruler 43 Ink application means 44 Ink tank 45 Dust removal filter

Claims (7)

An ink pan for storing ink;
A furnisher roll that intrudes into the ink pan and supplies ink from the ink pan to the printing plate cylinder.
In the ink pan, a pair of side squeegees that come into contact with both sides of the finisher roll and scrape the ink on both sides are provided .
A central annular groove is formed on the outer periphery of the finisher roll,
An ink pan and a furnisher roll , further comprising a central squeegee that penetrates into the central annular groove provided on the outer periphery of the finisher roll and scrapes the ink in the central annular groove. The union. 2. The combination of an ink pan and a finisher roll according to claim 1 , wherein the pair of side squeegees are entirely immersed in the ink of the ink pan. It said central squeegee, ink pan and pyrimidin Tsu combined product of the shear roll according to claim 1 or 2, characterized in that the entirety of which is immersed in the ink of the ink pan. An ink pan for storing ink;
A furnisher roll that intrudes into the ink pan and supplies ink from the ink pan to the printing plate cylinder.
In the ink pan, a pair of side squeegees that come into contact with both sides of the finisher roll and scrape the ink on both sides are provided .
The pair of side squeegees are entirely immersed in the ink of the ink pan, and the combination of the ink pan and the finisher roll. The contact portion of the pair of side squeegees that contacts both side surfaces of the finisher roll extends toward both side surfaces so as to be inclined with respect to the axial direction of the finisher roll. Item 5. A combination of an ink pan and a finisher roll according to any one of Items 1 to 4 . In an apparatus for applying ink to a substrate,
A transport roller for supporting and transporting the substrate;
Ink application means for applying ink to the printed material conveyed by the conveyance roller,
Ink application means
A printing plate cylinder for applying ink to a substrate;
A combination of an ink pan and a finisher roll for supplying ink to a printing plate cylinder, wherein the combination includes an ink pan and a finisher roll according to any one of claims 1 to 5. Ink applicator. In a method of applying ink to a substrate,
A step of preparing a substrate;
A process of transporting a substrate by a transport roller;
Supplying ink from the ink pan to the printing plate cylinder by a finisher roll;
A step of applying ink to a substrate by a printing plate cylinder,
In the step of supplying ink from the ink pan to the printing plate cylinder by the finisher roll, a pair of inks provided in the ink pan so that the ink adhering to both sides of the finisher roll abuts on both sides of the finisher roll. It is scratched by the side squeegee,
A central annular groove is formed on the outer periphery of the finisher roll,
In the step of supplying ink from the ink pan to the printing plate cylinder by the finisher roll, the ink in the central annular groove of the finisher roll is provided in the ink pan so as to enter the central annular groove of the finisher roll. An ink application method characterized by scratching with a central squeegee .

Images