IMAGING SYSTEM AND METHOD

• US 20120237272A1
• Filed: 12/09/2009
• Published: 09/20/2012
• Est. Priority Date: 12/09/2009
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Lior, Shai, Sandler, Mark
• Granted Patent: US 8,594,544 B2
• Time in Patent Office: Days
• US Class Current: 399/302
• CPC Class Codes: G03G 15/10 using a liquid developer
• CPC Class Codes: G03G 15/162 details of the the intermediate support, e.g. chemical composition
• CPC Class Codes: G03G 15/50 Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control sequencing control G03G21/14

Abstract

An intermediate transfer member (34) (ITM) transfers a toner image from an image bearing surface to a substrate. The ITM has an outermost surface having a roughness of less than or equal to about 300 Angstroms root-mean-square (RMS). An imaging liquid developer system (22) sequentially deposits differently colored layers of pigment containing material onto the outermost surface, wherein at least one of the layers has a final film thickness of less than or equal to 1 μm at 100 percent coverage.

Claims

1. An imaging system (20, 120) comprising:

an intermediate transfer member (34) (ITM) operative for transfer of a toner image from an image bearing surface for a subsequent transfer to a substrate;

the ITM having an outermost surface having a roughness of less than or equal to about 300 Angstroms root-mean-square (RMS); and

an imaging liquid developer system (22) operative to sequentially deposit differently colored layers of pigment containing material onto the outermost surface, wherein at least one of the layers has a final film thickness of less than or equal to 1 μ

m at 100% coverage.

2. The imaging system (20, 120) of claim 1, wherein one of the layers is a cyan colored layer, the cyan colored layer having a final film thickness of less than or equal to 1 μ

m at 100% coverage.

3. The imaging system (20, 120) of claim 2, wherein the cyan colored layer having a final film thickness of less than or equal to 0.8 μ

m at 100% coverage.

4. The imaging system (20, 120) of claim 1, wherein one of the layers is a black layer, the black layer having a final film thickness of less than or equal to 1 micrometer 100% coverage.

5. The imaging system (20, 120) of claim 1, wherein all of the layers collectively have an average final film thickness of less than or equal to 1 μ

m at 100% coverage.

6. The imaging system (20, 120) of claim 1, wherein the layers include a yellow layer, a cyan layer and a black layer and wherein each of the yellow layer, the cyan layer and the black layer had a final film thickness of less than or equal to 1 μ

m at 100% coverage.

7. The imaging system (20, 120) of claim 1, wherein the imaging liquid developer is operative to develop all of the layers on the intermediate transfer member (34) prior to any of the layers being transferred to the print medium.

8. The imaging system (20, 120) of claim 1, wherein the imaging liquid developer is operative to develop one of the layers on the intermediate transfer member (34) after another one of the layers has been transferred from the intermediate transfer member (34) to the print medium.

9. The imaging system (20, 120) of claim 1, wherein the outermost surface has a roughness of less than or equal to about 100 Angstroms RMS.

10. A method comprising:

developing multiple layers of imaging liquid on an intermediate transfer member (34) (ITM) having an outermost surface having a roughness of less than or equal to having an outermost surface having a roughness of less than or equal to about 300 Angstroms root-mean-square (RMS), wherein at least one of the layers has a final film thickness of less than or equal to 1 μ

m at 100% coverage; and

transferring the layers from the ITM onto a print medium.

11. The method of claim 10, wherein one of the layers is a cyan colored layer, the cyan colored layer having a final film thickness of less than or equal to 1 μ

m at 100% coverage.

12. The method of claim 10, wherein one of the layers is a black layer, the black layer having a final film thickness of less than or equal to 1 μ

m at 100% coverage.

13. The method of claim 10, wherein all of the layers collectively have an average final film thickness of less than or equal to 1 μ

m at 100% coverage.

14. The method of claim 10, wherein the layers include a yellow layer, a cyan layer and a black layer and wherein each of the yellow layer, the cyan layer and the black layer have a final film thickness of less than or equal to 1 μ

m at 100% coverage.

15. The method of claim 10, wherein the outermost surface has a roughness of less than or equal to about 100 Angstroms RMS.