WO2021166115A1 - 印刷装置、及び印刷物の製造方法 - Google Patents

印刷装置、及び印刷物の製造方法 Download PDF

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Publication number
WO2021166115A1
WO2021166115A1 PCT/JP2020/006497 JP2020006497W WO2021166115A1 WO 2021166115 A1 WO2021166115 A1 WO 2021166115A1 JP 2020006497 W JP2020006497 W JP 2020006497W WO 2021166115 A1 WO2021166115 A1 WO 2021166115A1
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WO
WIPO (PCT)
Prior art keywords
printing
ink
original plate
printed
blanket
Prior art date
Application number
PCT/JP2020/006497
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English (en)
French (fr)
Japanese (ja)
Inventor
村岡　貢治
Original Assignee
株式会社秀峰
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 株式会社秀峰 filed Critical 株式会社秀峰
Priority to JP2022501474A priority Critical patent/JP7325599B2/ja
Priority to PCT/JP2020/006497 priority patent/WO2021166115A1/ja
Publication of WO2021166115A1 publication Critical patent/WO2021166115A1/ja

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • B41F17/30—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on curved surfaces of essentially spherical, or part-spherical, articles
    • B41F17/34—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on curved surfaces of essentially spherical, or part-spherical, articles on articles with surface irregularities, e.g. fruits, nuts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/40—Printing on bodies of particular shapes, e.g. golf balls, candles, wine corks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N10/00—Blankets or like coverings; Coverings for wipers for intaglio printing
    • B41N10/02—Blanket structure
    • B41N10/04—Blanket structure multi-layer

Definitions

  • the present invention relates to a printing apparatus and a method for manufacturing a printed matter, and more particularly to a printing apparatus for linearly moving a printing blanket and pressing a printing surface against a surface to be printed for printing, and a method for manufacturing a printed matter.
  • the printing surface of the printing blanket is pressed against the printing original plate, and the ink placed on the printing original plate according to the printing pattern is transferred to the printing blanket. Then, the printing surface of the printing blanket to which the ink is transferred is pressed against the printing surface, and the ink transferred to the printing surface is transferred to the printing surface to print the printing pattern on the printing surface. ..
  • the printing surface of the blanket absorbs the solvent in the ink and further repels the ink appropriately. It is configured in.
  • the printing master is engraved with a fine dot pattern and holds ink in the recesses.
  • the printing blanket is formed in a roller shape, is rotated, and is pressed against the printing master plate to transfer the ink. Then, in the printed matter, the ink is transferred from the rotating blanket for printing.
  • Patent Document 1 comes into contact with the printing original plate while rotating, and the ink is transferred. Therefore, there is a problem that a load is applied to the contact portion between the printing blanket and the printing original plate in the direction along the surface of the printing original plate, and the surfaces of the printing blanket and the printing original plate are easily damaged.
  • the surface layer for forming the recesses is thinly formed on the printing original plate, the surface of the printing original plate may be worn due to repeated printing, and the ink may not be properly arranged on the surface of the printing original plate.
  • the present invention has been made to solve the above problems, and is capable of suppressing damage to the printing original plate used for printing and maintaining the accuracy of the image obtained on the printed surface even after repeated printing. It provides an apparatus and a method for manufacturing a printed matter.
  • the printing apparatus mounts a printing blanket having a printing surface that deforms according to the shape of the surface to be printed, a printing original plate having a mounting surface on which ink is placed, and the printing original plate.
  • the printing blanket comprises a printing original plate stage, a printing stage on which a printed matter having a surface to be printed is placed and fixed, and an ink placing device including an ink holding portion for absorbing and holding the ink. It is configured to be movable between the upper part of the printing original plate stage and the upper part of the printing stage, and is configured to move linearly with respect to the printing original plate stage or the printing stage.
  • a surface layer formed on a support and at least on the side of the surface of the printing plate having a sparse ink property is provided, and the surface of the printing master is a sparse ink region that does not receive the ink.
  • the sparse ink region is formed by the surface layer, and the parent ink region is formed by partially removing the surface layer, and the ink is printed on the sparse ink region.
  • the placement device places the ink in the parent ink region by bringing the ink holding portion into contact with the previously described placement surface of the printing original plate.
  • the method for manufacturing a printed matter according to the present invention is a method for manufacturing a printed matter using a printing blanket that deforms according to the shape of the surface to be printed, and is an ink mounting method in which ink is placed on the mounting surface of a printing original plate.
  • the printing original plate comprises a printing step of pressing against a printing surface, and the printing original plate includes a support and a surface layer formed on the support and at least on the above-mentioned mounting surface side is formed of a material having sparse ink property.
  • the previously described surface of the printing original plate includes a sparse ink region that does not receive the ink and a parent ink region that receives the ink formed by partially removing the surface layer, and the ink.
  • the ink is mounted in the parent ink region by bringing the ink loading device that absorbs and holds the ink into contact with the previously described surface of the printing original plate.
  • the printing apparatus can reduce damage to the printing original plate due to repeated printing. Further, since the printing original plate having the above configuration can retain a fine parent ink region even after repeated printing, the accuracy of the printed image can be maintained.
  • FIG. 5 is a cross-sectional view when the printing blanket 10 included in the printing apparatus 100 according to the first embodiment is pressed against the printed matter 70.
  • FIG. 5 is a cross-sectional view when the printing blanket 10 included in the printing apparatus 100 according to the first embodiment is pressed against the printed matter 70.
  • It is sectional drawing which shows an example of the printing original plate 50 used for the printing apparatus 100 which concerns on Embodiment 1.
  • FIG. It is a flow of the manufacturing method of the printed matter by the printing apparatus 100 which concerns on Embodiment 1.
  • FIG. 5 is an enlarged view of a contact portion between the printed surface 4 of FIG. 4 and the printed surfaces 71, 72, and 73. It is an enlarged view of the ink 40f or 40g transferred to the printing surface 73 of FIG. It is sectional drawing which shows the modification of the blanket 10 for printing which concerns on Embodiment 1.
  • Embodiment 1 the printing apparatus and the method for manufacturing a printed matter according to the present invention will be described with reference to the drawings.
  • the present invention is not limited to the embodiments described below. Further, in each figure, the same parts are designated by the same reference numerals, and some description thereof will be omitted. Further, each figure is schematically drawn, and the present invention is not limited to the illustrated shape.
  • the elastic body or elasticity is not limited to the one in which the load applied to the elastic body or the amount of deformation caused by the load has a linear relationship. It includes a non-linear relationship between the applied load and the amount of deformation caused by the load, which returns to the original shape immediately or after a predetermined time delay when the applied load is removed. ..
  • FIG. 1 is a side view showing an example of the printing apparatus 100 according to the first embodiment.
  • the printing apparatus 100 includes a printing blanket 10 that can be linearly moved in the vertical direction.
  • the printing blanket 10 moves the printing blanket 10 up and down by the vertical movement device 11 included in the printing device 100, and presses the printing surface 4 against the printed surface 71 of the printed matter 70.
  • the printing device 100 includes a horizontal moving device 12.
  • the horizontal moving device 12 moves the printing blanket 10 and the vertical moving device 11 in the horizontal direction.
  • the printing blanket 10 is moved above the cleaning device 60, the activation device 61, the air blow device 62, or the printing original plate 50 in addition to the printed matter 70 by the horizontal moving device 12.
  • the printing blanket 10 is moved up and down by the vertical movement device 11, and the printed surface 4 is pressed against each of the printed matter 70, the cleaning device 60, the activating device 61, or the printing original plate 50.
  • the printing apparatus 100 is provided with a printing stage 87 on which the printed matter 70 is placed, a cleaning device 60, an activation device 61, a surface treatment stage 86 including an air blow device 62, and a printing original plate 50 from the left side. It has a printing original plate stage 85.
  • these stages can be freely arranged, and can be appropriately changed according to the convenience of the operator and the place where the printing apparatus 100 is installed. Further, the cleaning device 60, the activation device 61, and the air blow device 62 of the printing device 100 may not be installed in the printing device 100.
  • FIG. 2 is a cross-sectional view showing an example of a printing blanket 10 included in the printing apparatus 100 according to the first embodiment.
  • the printing blanket 10 shown in FIG. 2 has, for example, a substantially hemispherical shape.
  • the shape of the printing blanket 10 is not limited to this, for example, a bullet shape, a shape having a curved surface formed by rotating a parabola around its axis of symmetry, a shape such as a part of an ellipsoid cut, a bullet shape or a semicircle.
  • the shape can be appropriately changed according to the specifications of the printed matter 70, such as a shape in which the cross section of the shape is continuously extended in a straight line.
  • the printing blanket 10 comprises a top that first contacts the printed matter 70 or the printing master 50, the top of which is composed of dots or lines.
  • the printing blanket 10 is pressed against the printed matter 70 or the printing original plate 50, air does not get caught between the printed matter 4 and the printed matter 70 or the printing original plate 50. Therefore, it is possible to prevent omission from occurring in the printed image applied to the printed matter 70.
  • a predetermined range centered on the apex 6 of the surface of the printing blanket 10 is the printing surface 4 on which the ink is transferred from the printing original plate 50 and transferred to the printed matter 70.
  • FIG. 2 is a cross-sectional view of the printing blanket 10 of FIG. The cross section is shown on a plane 13 through which the base material 5 is fixed, passing through the apex 6 of the printing blanket 10.
  • the base material 5 of the printing blanket 10 includes an inner layer 1 and an outer layer 2 that covers the surface of the inner layer 1.
  • the base material 5 is formed by molding, for example, silicone rubber.
  • the base material 5 has elasticity (flexibility) and is mixed with silicone oil to facilitate deformation.
  • the base material 5 has a substantially hemispherical shape, but the shape can be appropriately changed according to the specifications of the printed matter 70 and the like.
  • the base material 5 is deformed when the printing blanket 10 is pressed against the printing master plate 50, and the ink 40 (see FIG. 3) placed on the mounting surface 51 of the printing master plate 50 is transferred to the printing surface 4.
  • the ink 40 placed on the mounting surface 51 of the printing original plate 50 is arranged corresponding to the image printed on the printed matter 70, and forms a printing pattern. If the base material 5 is such that the ink 40 can be transferred to the printed surfaces 71, 72, and 73 when the printing blanket 10 is pressed against the printed surfaces 71, 72, and 73.
  • the material is not limited.
  • the base material 5 may be formed of two materials having different hardness.
  • the material of the outer layer 2 constituting the portion close to the printed surface 4 is set in the range of 50 to 70 points in terms of Asker C hardness.
  • the material forming the inner layer 1 inside the outer layer 2 is set to have an Asker C hardness of 100 points.
  • the inner layer 1 is located on the side where a force for pressing the printing surface 4 against the printed surfaces 71, 72, and 73 during printing is applied, and is located on the side of the connected support member 7 rather than the outer layer 2. ing.
  • the support member 7 is connected to the vertical movement device 11 and is a portion that transmits the force from the vertical movement device 11 to the printing blanket 10.
  • the upper portion of the base material 5 has an Asker C hardness set to 100 points
  • the lower portion (apex 6 side) of the base material 5 has an Asker C hardness of 50 to 70 points. Set to range.
  • it is desirable that the hardness of the printing blanket 10 is set low, so that the printing surface 4 side pressed against the printed matter 70 is pressed.
  • the hardness of the part is set low. With such a configuration, the entire shape of the printing blanket 10 can be easily maintained.
  • the outer layer 2 directly pressed against the printed surfaces 71, 72, and 73 is inclined with respect to the direction in which not only the printed surface 71 but also the curved printed surface 72 and the printing blanket 10 move. There is an advantage that it is easily deformed so as to follow the surface to be printed 73.
  • the hardness of each part of the base material 5 is not limited to the above hardness.
  • a surface treatment stage 86 is arranged next to the printing stage 87 of the printing apparatus 100.
  • a cleaning device 60 is installed on the surface treatment stage 86.
  • the cleaning device 60 includes, for example, paper or adhesive tape.
  • the printing surface 4 of the printing blanket 10 is pressed against the surface of paper or adhesive tape to remove ink 40, stains, dust, etc. remaining after printing.
  • the activation device 61 includes a storage tank for storing the liquid and an absorption unit for absorbing and holding the liquid.
  • the printing surface 4 of the printing blanket 10 is pressed against the surface of the absorbing unit, so that the liquid held by the absorbing unit adheres to the printed surface 4.
  • the printing blanket 10 facilitates transfer of the ink 40 placed on the printing original plate 50 to the printing surface 4 by adhering or impregnating the base material 5 with water or a solvent.
  • the liquid is appropriately selected according to the properties with the ink 40, and has the property of softening the hard ink 40.
  • the ink 40 is a mixture of synthetic resins such as acrylic resin or urethane resin, and a mixture of water, thinner, xylene, toluene, and the like, and it is preferable to select an ink 40 having a high affinity with the solvent contained in the ink 40.
  • the liquid used in the activator 61 is not limited to the above.
  • the absorption unit of the activation device 61 is configured by laminating, for example, a thin sheet-like absorbent material.
  • the absorbent material is made of, for example, paper, but is not limited to paper, and may be made of other materials such as cloth and resin as long as it absorbs liquid.
  • the absorption unit may be a sponge-like resin on which paper is laminated.
  • stains such as ink 40 remaining on the printing surface 4 of the printing blanket 10 may adhere, or the surface of the absorbing unit may be scraped and the absorbing unit may be scraped.
  • the paper that makes up the paper may be torn.
  • the paper located in the uppermost layer of the absorption unit is peeled off from the uppermost layer of the absorption unit and removed, and the stacked sheets can be removed one by one, or the upper layer can be mechanically replaced. It is configured in.
  • the method of replacing the paper located in the uppermost layer is not limited to this method. Since the absorption unit is configured so that the paper and the like constituting the uppermost layer can be removed or replaced, the surface is always kept clean and the liquid is permeated, so that the printing blanket 10 is printed. The printed surface can be activated by pressing the surface 4.
  • Air blow device 62 adjusts an appropriate amount of water or solvent adhering to the printing surface 4 of the printing blanket 10 by the activating device 61.
  • the air blow device 62 blows air toward the printing surface 4 to remove excess water or solvent from the printing surface 4.
  • the type and quantity of the air blower and the direction in which the air is blown are not limited.
  • ⁇ Printing original plate 50> The printing original plate 50 is placed on the printing original plate stage 85, and the ink 40 is placed on the mounting surface 51, and the printing surface 4 of the printing blanket 10 is pressed against the mounting surface 51. The ink 40 is transferred to the printing surface 4.
  • FIG. 5 is a cross-sectional view showing an example of a printing original plate 50 used in the printing apparatus 100 according to the first embodiment.
  • the printing master plate 50 has a flat plate shape, and includes a support 53 and a surface layer 52 formed on the support 53.
  • the surface layer 52 is formed of a material having a sparse ink property on at least the mounting surface 51 on which the printing surface 4 of the printing blanket 10 is pressed.
  • the surface layer 52 is formed by, for example, being partially destroyed and removed by laser light to remove a portion formed of a material having a sparse ink property. That is, the surface layer 52 is removed by, for example, laser light, and a recess 54 that opens into the mounting surface 51 is formed.
  • the surface layer 52 is a sparse ink layer having a sparse ink property to which the ink 40 does not easily adhere.
  • the support 53 is a parent ink layer having a parent ink property to which the ink 40 easily adheres.
  • the surface layer 52 is formed of, for example, silicone rubber or silicone resin. Silicone rubber and silicone resin are preferably used as the surface layer 52 of the printing master plate 50 because they have sparse ink properties and are chemically stable.
  • the surface layer 52 is not limited to silicone rubber and silicone resin, and other materials may be used as long as they have sparse ink properties.
  • the surface layer 52 and the support 53 are each formed of one layer, but the present invention is not limited to this form.
  • the surface layer 52 may be formed of one layer by a material having a sparse ink property and being destroyed by laser light, or may be provided with a sparse ink layer having a sparse ink property on the side on which the printing blanket 10 is pressed, and is a support.
  • a recording layer may be provided on the 53 side.
  • the recording layer for example, absorbs laser light and converts it into heat to reduce the adhesive strength between the recording layer and the sparse ink layer so that the sparse ink layer can be removed from the printing original plate 50.
  • the recording layer for example, absorbs laser light and converts it into heat, and the recording layer is destroyed by heat, thereby reducing the bonding force between the support 53 and the surface layer 52, and providing sparse ink property.
  • the surface layer 52 can be removed from the printing original plate 50.
  • the sparse ink layer is formed of silicone rubber or a silicone resin
  • the recording layer is formed of a heat-sensitive or photosensitive material.
  • the support 53 may be formed of, for example, one layer of a metal plate made of, for example, aluminum for holding the shape of the printing master plate 50, or a parent formed of a material having a pro-ink property on the surface of the metal plate.
  • An ink layer may be provided.
  • the support 53 may be surface-treated to roughen the surface by means such as corroding the surface of the metal plate.
  • the surface of the support 53 may be formed with a primer layer for improving the bonding force with the surface layer 52.
  • the printing original plate 50 has a recess 54 formed by removing the surface layer 52.
  • the ink 40 is supplied to the mounting surface 51 by the ink loading device 63, and the ink 40 is placed inside.
  • the portion where the surface layer 52 remains forms a sparse ink region 57, and the ink 40 is not adhered.
  • the recess 54 forms a parent ink region 58 on which the ink 40 is placed. That is, the mounting surface 51 has a sparse ink region 57 and a parent ink region 58, and the ink 40 is mounted only on the parent ink region 58 by the ink mounting device 63.
  • the thickness h1 of the surface layer 52 is formed to be 3 ⁇ m or less.
  • the width w2 which is the width dimension in the direction along the mounting surface 51 of the bottom portion 55 of the recess 54 is the width dimension which is the width dimension of the opening 56 of the recess 54.
  • w1 becomes large.
  • the thickness h1 of the surface layer 52 is set to 3 ⁇ m or less, the difference between the width w2 of the bottom 55 of the recess 54 and the width w1 of the opening 56 becomes small. As a result, the internal volume of the recess 54 is reduced.
  • the thickness h1 of the surface layer 52 is formed to be 3 ⁇ m or less, it becomes easy to supply energy to the layer exposed to the laser light when the recess 54 is formed by the laser light. Then, the laser light can accurately form the shape of the bottom portion 55 of the recess 54 of the printing original plate 50, and the width w2 can be made smaller.
  • the width w2 of the bottom 55 of the recess 54 is formed to be 20 ⁇ m or less, preferably 10 ⁇ m or less, and more preferably 5 ⁇ m or less.
  • the ink loading device 63 includes an ink holding portion 64 which is a roller having a material for holding ink on the surface.
  • the ink holding portion 64 is configured to rotate around a rotation shaft 65.
  • the ink 40 is placed on the mounting surface 51 by bringing the ink holding portion 64 into contact with the mounting surface 51 of the printing original plate 50 and rotating the ink holding portion 64 on the mounting surface 51. It is placed in the parent ink region 58.
  • the ink loading device 63 is not limited to the configuration including the rollers shown in FIG. 1, and if the ink holding unit 64 and the mounting surface 51 of the printing original plate 50 can come into contact with each other, for example, ink.
  • the holding portion 64 may be moved vertically with respect to the mounting surface 51.
  • FIG. 6 is a flow of a method for manufacturing a printed matter by the printing apparatus 100 according to the first embodiment. Next, a method of manufacturing a printed matter by the printing apparatus 100 will be described.
  • the start process is a process performed immediately after the printing apparatus 100 is started. Since the surface of the printing blanket 10 may not be activated immediately after the production of the printed matter is started, a step of appropriately activating the printed surface 4 of the printing blanket 10 is performed. First, when the printing device 100 is started, the printing device 100 moves the printing blanket 10 above the activating device 61 and lowers it toward the activating device 61. The printing blanket 10 is raised after the printing surface 4 is pressed against the absorption unit of the activation device 61 and a predetermined range including the printing surface 4 comes into contact with the absorption unit. This is referred to as an activation step (SP1).
  • SP1 activation step
  • the liquid such as water or solvent that has soaked into the absorption unit of the activation device 61 adheres to or soaks into the printing surface 4 of the printing blanket 10.
  • the printing blanket 10 has irregularities formed on its surface and soaks into the absorption unit.
  • the unevenness of the surface is preferably formed so as to have a height difference of 2 to 5 ⁇ m.
  • the printing apparatus 100 After the start first step is completed, it is determined whether or not the amount of liquid adhering to the printing surface 4 of the printing blanket 10 is appropriate (SP2). When the amount of liquid adhering to the printing surface 4 is not appropriate (NO in SP2), the printing apparatus 100 performs an air blow step (SP3). In the air blow step, the air blow device 62 blows air onto the print surface 4 of the printing blanket 10 to remove excess liquid adhering to the print surface 4. The case where the amount of liquid adhering to the printing surface 4 is not appropriate is the case where the liquid is excessively adhering to the printing surface 4.
  • SP4 the amount of liquid adhering to the printing surface 4 of the printing blanket 10 is appropriate. If excess water or solvent is still attached to the printing surface 4 of the printing blanket 10 (NO in SP4), the printing apparatus 100 performs an absorption step (SP5). In the absorption step, the printing apparatus 100 presses the printing surface 4 of the printing blanket 10 against the cleaning apparatus 60. As a result, excess liquid adhering to the printing surface 4 of the printing blanket 10 is removed.
  • one or both of the air blow step (SP3) and the absorption step (SP5) may be omitted. Further, the order of implementation of the air blow step and the absorption step may be changed. Further, the air blow step and the absorption step may be carried out a plurality of times.
  • the repeating steps include an ink placing step (S1), an ink transfer step (S2), a printing step (S3), a cleaning step (S4), an activation step (S5), an air blow step (S7), and an absorption step (S9).
  • the printing apparatus 100 includes an ink placing step (S1), an ink transfer step (S2), a printing step (S3), a cleaning step (S4), an activation step (S5), and an air blow step.
  • the process proceeds in the order of (S7) and the absorption step (S9).
  • the repeating process is not limited to this order.
  • the printing apparatus 100 carries out the absorbing step (S9) from the printing step (S3).
  • the printing apparatus 100 may perform the next ink placing step (S1) in parallel while the printing step (S3) to the absorption step (S9) are being carried out.
  • the printed matter 70 is completed every time the printing process (S3) is performed.
  • the printed matter 70 is not limited to one, and a plurality of printed matter 70 may be printed at the same time.
  • a plurality of printing blankets 10 may be installed in the printing apparatus 100.
  • the ink placing step (S1) is a step of placing the ink 40 on the printing original plate 50 by the ink placing device 63.
  • the ink mounting device 63 brings the ink holding portion 64 into contact with the mounting surface 51 of the printing original plate 50, and rolls the ink holding portion 64 on the mounting surface 51.
  • the ink 40 absorbed by the ink holding portion 64 is placed only in the parent ink region 58 provided on the mounting surface 51.
  • the ink holding portion 64 in which the ink 40 is absorbed also comes into contact with the sparse ink region 57. However, since the sparse ink region 57 repels the ink 40, the ink 40 is not placed on the sparse ink region 57.
  • 7 and 8 are cross-sectional views showing an example of the printing original plate 50 after the ink placing step (S1) is completed.
  • 7 and 8 schematically show the state of the ink 40 placed on the mounting surface 51.
  • the ink 40 supplied into the recess 54 adheres to the parent ink region 58 exposed at the bottom 55 of the recess 54, and the side surface 59 of the recess 54 is a surface layer 52 formed of a sparse ink material. Therefore, the ink 40 is repelled.
  • the ink 40 is pushed into the ink holding portion 64 composed of rollers and the like, and enters the recess 54 as shown in FIGS. 7 and 8.
  • the printing surface 4 of the printing blanket 10 is pressed against the mounting surface 51 of the printing original plate 50.
  • the printing surface 4 of the printing blanket 10 comes into contact with the ink 40 placed in the parent ink region 58 of the printing original plate 50 shown in FIG. After that, the printing blanket 10 moves upward, and the printing surface 4 separates from the mounting surface 51 of the printing original plate 50.
  • the ink 40 that comes into contact with the printing surface 4 moves to the printing surface 4 as it is.
  • the ink 40 is arranged on the printing surface 4 according to the parent ink area 58 arranged on the mounting surface 51 of the printing original plate 50.
  • the ink 40 adheres to or soaks into the printing surface 4 of the printing blanket 10 by the activation step (SP1 or S5), and the ink 40 easily adheres to the printing surface 4.
  • the printing surface 4 of the printing blanket 10 is activated by the activating device 61, and the ink 40 is likely to adhere even if the viscosity of the ink 40 is high.
  • the printing apparatus 100 can print on a flat surface, but can also print on the printed surfaces 71, 72, and 73 of the printed matter 70 as shown in FIGS. 3 and 4.
  • the printed surface 71 of the printed matter 70 is a flat surface.
  • the printed surface 72 is formed of a curved surface
  • the printed surface 73 is formed of a flat surface but is inclined with respect to the direction in which the printing blanket 10 moves.
  • the printing blanket 10 is pressed toward the printing stage 87 so that the printing surface 4 to which the ink 40 is attached adheres to the printing surfaces 71, 72, and 73.
  • the ink 40 adhering to the printing surface 4 comes into contact with the printing surfaces 71, 72, and 73 and is transferred.
  • the printed matter 70 is positioned and fixed on the print stage 87. As a result, the positional relationship between the printing blanket 10 and the printed surfaces 71, 72, and 73 is determined, and printing can be performed on the printed surfaces 71, 72, and 73 with high accuracy.
  • the cleaning step (S4) the printing surface 4 of the printing blanket 10 after the ink 40 is transferred to the printing surfaces 71, 72, and 73 is pressed against the flat cleaning surface of the cleaning device 60.
  • the ink 40 remaining on the printing blanket 10 is adhered to the cleaning surface.
  • the cleaning surface is composed of, but is not limited to, paper or adhesive tape.
  • the activation step (S5) is a step having the same contents as the activation step (SP1) in the start step.
  • the air blow step (S7) has the same contents as the air blow step (SP3) in the start step.
  • the absorption step (S9) is also a step having the same contents as the absorption step (SP5) in the start step.
  • the air blow step (S7) and the absorption step (S9) are carried out according to the amount of liquid such as water or solvent adhering to the printing surface 4 of the printing blanket 10, and one of them may be omitted. At least one may be carried out multiple times.
  • the air blow step (S7) and the absorption step (S9) are carried out according to the activated state of the printing surface 4 after confirming the state of the printing surface 4 of the printing blanket 10 before each step. (S6 and S8).
  • the confirmation steps (S6 and S8) the state of the printing surface 4 of the printing blanket 10 is confirmed, and if the activated state of the printing surface 4 is appropriate, whether to perform printing again in the repetitive determination step (S10). Judge whether or not.
  • printing YES in S10
  • the process from the ink placing step (S1) is repeated again.
  • NO in S10 the production of the printed matter is terminated.
  • the printing apparatus 100 prints on a large number of printed matter 70 by performing a start process at startup and then performing a repetitive process.
  • the printing apparatus 100 has a printing blanket 10 having a printing surface 4 that deforms according to the shapes of the printed surfaces 71, 72, and 73, and a mounting surface 51 on which the ink 40 is placed.
  • the printing original plate 50 is provided with. Further, the printing apparatus 100 absorbs and holds the printing original plate stage 85 on which the printing original plate 50 is placed, the printing stage 87 on which the printed matter 70 having the printed surfaces 71, 72, and 73 is placed, and the ink 40.
  • An ink placing device 63 including an ink holding unit 64 is provided.
  • the printing blanket 10 is configured to be movable between the upper part of the printing original plate stage 85 and the upper part of the printing stage 87, and is configured to move linearly with respect to the printing original plate stage 85 or the printing stage 87.
  • the printing master plate 50 includes a support 53 and a surface layer 52 formed on the support 53 and at least on the mounting surface 51 side is made of a material having sparse ink property.
  • the mounting surface 51 of the printing original plate 50 includes a sparse ink region 57 that does not receive the ink 40 and a parent ink region 58 that receives the ink.
  • the sparse ink region 57 is formed by the surface layer 52.
  • the parent ink region 58 is formed by partially removing the surface layer 52.
  • the ink mounting device 63 arranges the ink 40 in the parent ink region 58 by bringing the ink holding portion 64 into contact with the mounting surface 51 of the printing original plate 50.
  • the printing apparatus 100 can place the ink 40 on the parent ink region 58 of the mounting surface 51 of the printing original plate 50, and can transfer the ink 40 to the printing blanket 10. can.
  • the printing blanket 10 moves linearly toward the printing stage 87 on which the printed matter 70 is placed to perform printing. Therefore, the printing apparatus 100 can accurately maintain the relative positional relationship between the printed matter 70 fixed to the printing stage 87 and the printing blanket 10, and can perform high-precision printing on the printed matter 70.
  • the printing apparatus 100 linearly moves the printing blanket 10 against the printing original plate 50 and presses the printing surface 4 against the printing original plate 50. Therefore, even if a large number of printed matter 70s are repeatedly printed, deterioration and damage of the printing original plate 50 can be suppressed, the life of the printing original plate 50 is improved, and the transfer accuracy of the ink 40 to the printing blanket 10 is extended. Can be maintained for a period of time.
  • the printing apparatus 100 linearly moves the printing blanket 10 and presses the printing surface 4 substantially perpendicular to the mounting surface 51 of the printing original plate 50. That is, the printing surface 4 is pressed along the depth direction of the recess 54 of the mounting surface 51 of the printing original plate 50. Therefore, the printing apparatus 100 can surely bring the ink 40 in the recess 54 into contact with the printed surface 4, and the ink 40 transferred to the printed surface 4 does not come off, and the accuracy when transferred to the printed matter 70 is achieved. A high print image can be obtained.
  • the mounting surface 51 of the printing original plate 50 includes a recess 54 formed by removing the surface layer 52, and the depth of the recess 54 is 3 ⁇ m or less.
  • FIG. 7 shows a state when the ink 40 is placed in the recess 54 from the ink placing device 63.
  • the thickness h1 of the surface layer 52 of the printing original plate 50 is large, the recess 54 becomes like the recess 54a shown by the dotted line in FIG. Therefore, when the surface layer 52 of the printing original plate 50 is thickly formed, the dots of the recesses 54a become large in the ink placing step (S1), and the amount of the ink 40 filled in the recesses 54a is also increased by the surface layer 52. More than if it is thinly formed.
  • the size of the ink 40 transferred to the printing surface 4 of the printing blanket 10 increases, and the amount of ink also increases.
  • the size of 1 dot transferred to the printing surface 4 becomes large and the amount of ink 40 is large, the size of 1 dot of the ink 40 transferred from the printing surface 4 to the printed surfaces 71, 72, and 73 also increases.
  • the amount of larger ink 40 also increases. Therefore, the distance between the dots of the adjacent inks 40 transferred to the printed surfaces 71, 72, and 73 may not be a desired distance, and the accuracy of the printed image may be lowered.
  • FIG. 9 is an enlarged view of the contact portion between the printed surface 4 of FIG. 4 and the printed surfaces 71, 72, and 73.
  • FIG. 10 is an enlarged view of the ink 40f or 40g transferred to the printed surface 73 of FIG.
  • the figure on the left shows 40 f or 40 g of ink in a state where the printing blanket 10 is pressed against the printed matter 70.
  • the figure on the right side shows a state in which 40f or 40g of ink is transferred to the surface of the printed matter 70.
  • the printing apparatus 100 may transfer the ink 40 to a curved surface or a surface inclined with respect to the moving direction of the printing blanket 10, such as the printed surfaces 72 and 73.
  • a curved surface or a surface inclined with respect to the moving direction of the printing blanket 10 On the printing surface 4 of the printing blanket 10, 40a to 40g of ink transferred from the printing original plate 50 is placed.
  • the inks 40a to 40d are transferred to the printed surface 71 perpendicular to the moving direction of the printing blanket 10.
  • the ink 40e is transferred to the surface to be printed 71, which is a curved surface.
  • the inks 40f and 40g are transferred to the surface to be printed 73, which is a surface inclined with respect to the surface perpendicular to the moving direction of the printing blanket 10.
  • the printed matter 70 has surfaces 71, 72, and 73 to be printed as an example, and the printed matter 70 may have other uneven shapes.
  • the printing blanket 10 is deformed so that the printed surface 4 follows the printed surfaces 72 and 73 having an uneven shape. At this time, the printed surface 4 is slightly displaced in the direction along the printed surfaces 72 and 73. Therefore, as shown in FIG. 10A, when the size of the ink 40 per dot is large, the inks 40f and 40g in contact with both the printing surface 4 and the printing surface 73 are on the printing surface 4. It is enlarged and transferred in the direction along the printed surface 73 according to the strain ⁇ . When the size of the ink 40f and 40g per dot is large as shown in FIG. 10A, the ink 40 and the printed surface 73 are in contact with each other with the printed surface 4 and the printed surface 73 separated by a distance L1. do.
  • the ink 40 has an initial width d1 because it is deformed between the printing surface 4 and the printing surface 73 during the period from the contact with the printing surface 73 until the printing blanket 10 is completely deformed.
  • the ink 40 has a width d2 and is transferred to the surface to be printed 73.
  • the width d4 of the ink 40 transferred to the printed surface 73 is larger than the width d3 of the ink 40 when it is on the printed surface 4, but the strain ⁇ 2 of the ink 40 is smaller than the strain ⁇ 1. .. That is, ⁇ 1> ⁇ 2> 1. That is, when the size of the ink 40 per dot is small, the width of the ink 40 increases before and after the transfer to the surface to be printed 73, but the rate of increase is small. From the above, the printing apparatus 100 sets the depth of the recess 54 of the mounting surface 51 of the printing original plate 50 to 3 ⁇ m or less, so that the printed surfaces 72 and 73 are inclined with respect to the direction in which the printing blanket 10 is moved and pressed. Even when the ink 40 is transferred to, a highly accurate printed image can be obtained.
  • the width of the bottom portion 55 of the recess 54 in the direction along the mounting surface 51 should be 3 ⁇ m or more and 10 ⁇ m or less.
  • the recess 54 formed on the mounting surface 51 is stably formed, so that the printing apparatus 100 can reliably mount the ink 40 on the parent ink region 58.
  • the thickness of the surface layer 52 formed on the support 53 is 3 ⁇ m or less.
  • the ink 40 transferred to the printing surface 4 of the printing blanket 10 has a smaller size per dot, and the amount of the ink 40 can be reduced. Therefore, when the ink 40 is transferred to the printed matter 70, the accuracy is high. A high print image can be obtained.
  • the thickness h1 of the surface layer 52 of the printing original plate 50 is large, the width w2 of the bottom portion 55 of the recess 54a is large relative to the width w1 of the opening 56.
  • the volume of the recess 54a becomes large, and the amount of ink 40 placed on one recess 54a increases.
  • the accuracy of the printed image may decrease.
  • the printing apparatus 100 according to the first embodiment by reducing the size per dot of the ink 40 transferred from the printing original plate 50, the printing blanket 10 is inclined with respect to the direction in which the printing blanket 10 is moved and pressed. Even when the ink 40 is transferred to the printed surfaces 72 and 73, a highly accurate printed image can be obtained.
  • FIG. 11 is a cross-sectional view showing a modified example of the printing blanket 10 according to the first embodiment.
  • the printing blanket 10 according to the first embodiment may include a protective coating layer 3 that covers the surface of the base material 5.
  • the protective coating layer 3 constitutes the outer printing surface 4 of the printing blanket 10.
  • the protective coating layer 3 is configured by, for example, attaching a 0.5 mm silicone rubber sheet to the surface of the outer layer 2.
  • the protective coating layer 3 prevents the silicone oil contained in the soft silicone rubber inside from seeping out onto the printed surface 4. Further, since the outer surface of the protective coating layer 3 constitutes the printing surface 4 and is repeatedly pressed against the printing master plate 50 and the printing surfaces 71, 72, and 73, durability against scratches and abrasion is required.
  • the protective coating layer 3 uses a material having a higher hardness than the outer layer 2, and when the printed surface 4 is pressed against the printed surfaces 71, 72, and 73, the printed surfaces 71, 72, and It is thinned to follow 73.
  • the thickness of the protective coating layer 3 is as thin as possible, for example, preferably in the range of 0.1 mm to 1 mm.
  • the material of the protective coating layer 3 is not limited to silicone rubber, and the material can be appropriately selected as long as it follows the deformation of the inner layer 1 and the outer layer 2.
  • the protective coating layer 3 has sufficient elasticity so that it can be attached along the surface of the base material 5.
  • the printing blanket 10 may be further formed into a multi-layer structure.
  • the inner layer 1 or the outer layer 2 of the printing blanket 10 shown in FIG. 11 may be formed of a material having a further different hardness in a multilayer structure.
  • the protective coating layer 3 is attached to the surface of the base material 5, but when damage such as scratches or wear occurs, it can be peeled off from the surface of the base material 5 and replaced with a new one.
  • the protective coating layer 3 is cheaper than the base material 5, and the inner base material 5 can be used as it is by replacement. Therefore, by updating the protective coating layer 3, the expensive base material 5 can be used repeatedly, and the state of the printing surface 4 of the printing blanket 10 can be kept in a state suitable for printing. As a result, the printing apparatus 100 according to the first embodiment can reduce the cost of printing.
  • the base material 5 is composed of the inner layer 1 and the outer layer 2 in FIG. 11, it may be composed of only one layer of the inner layer 1.
  • the protective coating layer 3 may be provided on the base material 5 formed of only one layer of the inner layer 1. However, if the base material 5 is also scratched together with the protective film layer 3, the protective film layer 3 is replaced when the protective film layer 3 is replaced due to scratches on the protective film layer 3 attached to the base material 5.
  • the base material 5 may be damaged by the peeling operation of the base material 3, or the surface of the base material 5 may be hardened or deteriorated. Therefore, it is desirable that the base material 5 is composed of multiple layers.

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PCT/JP2020/006497 2020-02-19 2020-02-19 印刷装置、及び印刷物の製造方法 WO2021166115A1 (ja)

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WO2023209945A1 (ja) * 2022-04-28 2023-11-02 株式会社秀峰 印刷装置、及び印刷物の製造方法

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KR20250065265A (ko) * 2023-11-02 2025-05-12 가부시키가이샤 슈호 인쇄 장치 및 인쇄물의 제조 방법

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JP2011183604A (ja) * 2010-03-05 2011-09-22 Shuho:Kk 印刷用パッドおよび印刷装置
WO2017199344A1 (ja) * 2016-05-17 2017-11-23 株式会社秀峰 印刷用ブランケット
WO2018078694A1 (ja) * 2016-10-24 2018-05-03 株式会社秀峰 印刷用ブランケットの活性化装置及び印刷用ブランケットを使用した印刷方法

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JP2011183604A (ja) * 2010-03-05 2011-09-22 Shuho:Kk 印刷用パッドおよび印刷装置
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WO2023209941A1 (ja) * 2022-04-28 2023-11-02 株式会社秀峰 印刷用パッド
WO2023209945A1 (ja) * 2022-04-28 2023-11-02 株式会社秀峰 印刷装置、及び印刷物の製造方法
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JPWO2023209945A1 (enrdf_load_stackoverflow) * 2022-04-28 2023-11-02
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