Cliché and printing apparatus comprising same

Patent metadata

Field	Value
Publication number	US-9764541-B2
Application number	US-201314402829-A
Country	US
Kind code	B2
Filing date	May 31, 2013
Priority date	May 31, 2012
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

The present specification describes a cliché, a method of manufacturing the cliché, and a printing method using the cliché.

First claim

What is claimed is:

1. A cliché comprising:
a support roll;
a flexible base provided to surround at least one surface of the support roll and having an uneven portion, and
a porous sheet provided between the support roll and the flexible base,
wherein both ends of the flexible base in a circumferential direction of the support roll are fixed to the support roll by a magnet, and
wherein the support roll has a groove portion in a direction that is parallel to a rotation axis of the roll, and the ends of the flexible base are fixed in the groove portion by the magnet or the ends of the flexible base are fixed to the support roll in the groove portion.

2. The cliché of claim 1 , wherein a buffer layer for improving adhesion force is provided between the flexible base and the uneven portion, or the flexible base is subjected to pre-treatment for improvement of the adhesion force.

3. The cliché of claim 1 , wherein a depth of the uneven portion is 1 micrometer or more.

4. The cliché of claim 1 , comprising:
a SiO x layer provided on a surface of the base, on which the uneven portion is provided, wherein x is from 1 to 2.

5. The cliché of claim 4 , wherein a thickness of the SiO x layer is from 10 nm to 2 mm.

6. The cliché of claim 4 , wherein a surface energy of the SiO x layer is from 40 dyn/cm to 4,000 dyn/cm.

7. The cliché of claim 4 , wherein a surface energy of the SiO x layer is from 40 dyn/cm to 70 dyn/cm.

8. The cliché of claim 1 , wherein an average pore size of the porous sheet is from 0.1 μm to 100 μm.

9. The cliché of claim 1 , wherein the porous sheet is any one of a sintered bodies of a polymer, metal and ceramic.

10. The cliché of claim 1 , wherein a porosity of the porous sheet is from 10% to 50%.

11. The cliché of claim 1 , wherein a vacuum suction hole is provided in the support roll.

12. The cliché of claim 1 , wherein the fixing is performed by a chemical fixing unit or a physical fixing unit.

13. A printing device comprising:
the cliché according to claim 1 .

14. A printing method comprising:
applying a printing composition on a blanket roll,
removing a portion of the printing composition on the blanket roll by the cliché according to claim 1 , and
transferring the printing composition remaining on the blanket roll on a print target body.

15. The printing method of claim 14 , wherein the applying of the printing composition, the removing of the portion of the printing composition, and the transferring of the printing composition are performed simultaneously.

16. The printing method of claim 14 , wherein the removing of the portion of the printing composition on the blanket roll by the cliché, and the transferring of the printing composition remaining on the blanket roll on the print target body are performed simultaneously.

Assignees

• Lg Chemical Ltd

Inventors

• Seong Jiehyun
• Lee Seung Heon
• Son Yong Goo
• Hwang Ji Young

Classifications

• B41C1/06 Primary

  Transferring (B41C1/10, B41C1/18 take precedence) · CPC title

• G03F7/201

  characterised by an oblique exposure; characterised by the use of plural sources; characterised by the rotation of the optical device; characterised by a relative movement of the optical device, the light source, the sensitive system or the mask · CPC title

• G03F7/2002

  with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image · CPC title

• B41C1/00 Primary

  Forme preparation · CPC title

• B41F27/12

  for attaching flexible printing formes · CPC title