Rotogravure printing

Patent metadata

Field	Value
Publication number	US-11712883-B2
Application number	US-201716618838-A
Country	US
Kind code	B2
Filing date	Jul 14, 2017
Priority date	Jul 14, 2017
Publication date	Aug 1, 2023
Grant date	Aug 1, 2023

Abstract

In an example, a rotogravure printer roller is described. The printer roller ( 300 ) comprises a contact surface formed from a plurality of adjacent roller sections ( 302, 304 ). The roller sections are constructed and arranged to be removably assembled to form the roller.

First claim

What is claimed is:

1. A rotogravure printer roller comprising:
a plurality of roller sections that each include a first face that includes a plurality of protrusions and a second face that includes a plurality of recesses;
a contact surface formed from the plurality of roller sections, wherein the plurality of roller sections are removably assembled to form the rotogravure printer roller when the plurality of protrusions from a first section are positioned within the plurality of recesses of a second section that is adjacent to the first section; and
an end plate that includes an outer face with a shaft portion and an inner face with alignment features arranged to connect with an alignment feature of an outer roller section of the rotogravure printer roller, wherein the shaft portion of the end plate does not extend to the inner face of the end plate.

2. The rotogravure printer roller according to claim 1 , comprising at least one engraved roller section and at least one unengraved roller section, wherein the contact surface comprises respective engraved and unengraved regions.

3. The rotogravure printer roller according to claim 2 , wherein the engraved regions and unengraved regions of the contact surface are to facilitate lane priming in use.

4. The rotogravure printer roller according to claim 1 , wherein each section comprises a corresponding alignment feature to align a respective section with an adjacent section.

5. The rotogravure printer roller according to claim 1 , wherein the shaft portion is to engage with a drive mechanism of a mounting structure.

6. The rotogravure printer roller according to claim 1 , comprising a bearing surface, the bearing surface to engage a corresponding bearing surface of a rotogravure printer.

7. A modular section for a rotogravure printer roller, the modular section comprising:
a first face that includes a plurality of protrusions and a second face that includes a plurality of recesses, the plurality of protrusions integrally formed on the first face and the second face excluding protrusions;
a peripheral contact surface to engage a print medium, the plurality of protrusions and the plurality of recesses arranged along inner surfaces of the first face and the second face spaced from the peripheral contact surface; and
an alignment feature having the plurality of protrusions to align the modular section with an adjacent modular section of the rotogravure printer roller when the plurality of protrusions from the modular section are positioned within a plurality of recesses of the adjacent modular section, wherein the plurality of recesses on the second face connects to a corresponding alignment feature of another adjacent modular section, which is coupled to an inner surface of an end plate that includes a shaft portion on an outer surface, wherein the shaft portion of the end plate does not extend to the inner surface of the end plate.

8. The modular section according to claim 7 , wherein the contact surface is an engraved surface to engage a print medium and transfer a printing fluid to the print medium.

9. The modular section according to claim 7 , wherein the contact surface is an unengraved surface to engage a print medium, the unengraved surface being to prevent or limit transfer of a printing fluid to the print medium.

10. A modular rotogravure printer roller comprising a plurality of modular sections according to claim 7 .

11. A kit comprising a plurality of modular sections according to claim 7 , wherein the kit comprises a modular section having an engraved contact surface and a modular section comprising an unengraved contact surface.

12. The kit according to claim 11 further comprising two end plates.

13. A method of operating a rotogravure printer, the method comprising:
providing a rotogravure printer roller by arranging an engraved roller section that includes a first face with a plurality of protrusions and an unengraved roller section that includes a second face that includes a plurality of recesses such that the plurality of protrusions of the first face are positioned within the plurality of recesses of the second face;
providing a first end plate on a first end of the rotogravure printer roller that includes a first shaft portion to engage with a drive mechanism, wherein the first shaft portion of the first end plate does not extend to an inner face of the first end plate; and
providing a second end plate on the second end of the rotogravure printer roller that includes a second shaft portion to engage with the drive mechanism, wherein the second shaft portion of the second end plate does not extend to an inner face of the second end plate.

14. The method according to claim 13 , including using the rotogravure printer roller in a rotogravure printer to deliver a printing fluid to a print medium.

Assignees

• Hp Indigo Bv

Inventors

• Joseph Lior
• Jekobson Regev
• Kopel Erez

Classifications

• B41F3/36 Primary

  for intaglio or heliogravure printing (proof-print presses B41F3/28) · CPC title

• B41F9/063 Primary

  Using inking rollers · CPC title

• B41F13/11

  Gravure cylinders {(attaching cylindrical formes B41F27/105)} · CPC title

• B41M1/10

  Intaglio printing {; Gravure printing} · CPC title

• B41F31/26

  Construction of inking rollers (inking-rollers serving also to apply ink repellants in rotary lithographic machines B41F7/36) · CPC title