PRINTHEAD MAINTENANCE FACILITY WITH INTERCHANGEABLE STATIONS

• US 20090179940A1
• Filed: 01/16/2008
• Published: 07/16/2009
• Est. Priority Date: 01/16/2008
• Status: Active Grant

• Current Assignee: Memjet Technology Ltd. (Memjet Limited)
• Original Assignee: Silverbrook Research Pty Limited
• Inventors: Silverbrook, Kia, Tsubono, Makomo, Hibbard, Christopher, Abraham, Nicholas Kenneth, Bertok, Attila, Dyer, Geoffrey Philip, MacKey, Paul Ian
• Granted Patent: US 7,758,149 B2
• Time in Patent Office: Days
• US Class Current: 347/31
• CPC Class Codes: B41J 11/057 Structure of the surface
• CPC Class Codes: B41J 2/16541 Means to remove deposits from wipers or scrapers
• CPC Class Codes: B41J 2/16547 the wipers and caps or spittoons being on the same movable support
• CPC Class Codes: B41J 2/16585 for paper-width or non-reciprocating print heads

Abstract

A printhead maintenance facility with a core that mounts in an inkjet printer for movement relative to an inkjet printhead. The core has a plurality of maintenance station mounting sites, each with engagement formations. The core also has a plurality of maintenance structures for operation with the printhead, the plurality of maintenance structures each being mountable to at least one other of the plurality of maintenance station mounting sites.

Claims

1. A printhead maintenance facility for an inkjet printhead, the printhead maintenance facility comprising:

a core for mounting in an inkjet printer for movement relative to the inkjet printhead, the core having a plurality of maintenance station mounting sites, each with engagement formations; and

,

a plurality of maintenance structures for operation with the printhead, the plurality of maintenance structures each being mountable to at least one other of the plurality of maintenance station mounting sites.

2. A printhead maintenance facility according to claim 1 wherein the maintenance structures are selected from the following:

a print platen;

a spittoon;

a capper;

a primer; and

,

a wiper.

3. A printhead maintenance facility according to claim 1 wherein the printhead is a pagewidth printhead with an array of nozzles formed in a nozzle face that extends the printing width of a media substrate and the core is an elongate structure for mounting in the printer adjacent the printhead such that its longitudinal extent is parallel that of the array of nozzles.

4. A printhead maintenance facility according to claim 3 wherein the core is mounted in the printer such that it can rotate about its longitudinal axis to present each of the maintenance structures to the printhead.

5. A printhead maintenance facility according to claim 4 wherein the maintenance mounting sites are surface sockets in the core for receiving the maintenance structures.

6. A printhead maintenance facility according to claim 4 wherein the maintenance mounting sites are provided by formations fixed to the surface of the core.

7. A printhead maintenance facility according to claim 6 wherein the formations are longitudinally extending slots for slidably receiving the maintenance structures.

8. A printhead maintenance facility according to claim 4 wherein the plurality of maintenance structures are each mountable to any of the plurality of maintenance station mounting sites.

9. A printhead maintenance facility according to claim 4 wherein the core is at least partially formed from a porous polymer able to absorb ink by capillary action.

10. A printhead maintenance facility according to claim 9 wherein the core has at least one hollow cavity for containing ink.

11. A printhead maintenance facility according to claim 10 wherein the core has a drain for draining absorbed ink out of the core.

12. A printhead maintenance facility according to claim 10 wherein the at least one hollow cavity contains fibrous material for wicking ink away from the maintenance structures.

13. A printhead maintenance facility according to claim 12 wherein the core has a cylindrical tube of porous polymer material defining a central cavity filled with micro-fiber material.

14. A printhead maintenance facility according to claim 13 wherein the cylindrical tube is compressed polymer particles.

15. A printhead maintenance facility according to claim 14 wherein the compressed polymer particles have a surface treatment such that the porous polymer material is hydrophilic.

16. A printhead maintenance facility according to claim 1 wherein the maintenance facility has more than three maintenance structures.

17. A printhead maintenance facility according to claim 1 wherein the maintenance facility has four maintenance structures.