The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 26, 2021
Filed:
Oct. 10, 2019
Applicant:
Hewlett-packard Development Company, L.p., Spring, TX (US);
Inventor:
Seongsik Chang, Palo Alto, CA (US);
Assignee:
Hewlett-Packard Development Company, L.P., Spring, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/10 (2006.01); G03G 15/11 (2006.01); C09D 11/02 (2014.01); G03G 9/00 (2006.01);
U.S. Cl.
CPC ...
G03G 15/104 (2013.01); C09D 11/02 (2013.01); G03G 9/00 (2013.01); G03G 15/10 (2013.01); G03G 15/11 (2013.01); G03G 2215/0634 (2013.01);
Abstract
A binary ink developer (BID) assembly for a liquid electrophotography (LEP) printing device can include a developer roller having an electrically insulating exterior coating that receives ink from an ink supply and transfers the received ink to a photoconductive imaging cylinder in accordance with an electrostatic image on the imaging cylinder. A charge-specified boundary condition can exist at the boundary between the exterior coating and the ink. Electrically conductive ink may not be transferred to the imaging cylinder at background portions of the electrostatic image.