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:
May. 19, 2015
Filed:
Feb. 04, 2011
Omer Gila, Cupertino, CA (US);
Michael H. Lee, San Jose, CA (US);
Seongsik Chang, Santa Clara, CA (US);
Tom Anthony, Sunnyvale, CA (US);
Omer Gila, Cupertino, CA (US);
Michael H. Lee, San Jose, CA (US);
Seongsik Chang, Santa Clara, CA (US);
Tom Anthony, Sunnyvale, CA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
Printers, methods, and apparatus to form an image on a substrate are disclosed. An example disclosed charge roller includes a dielectric outer layer () comprising an inner surface () and an outer surface (), the outer surface () to be charged by a first external surface and to discharge onto a second external surface, and the dielectric outer layer () to substantially prevent charge transfer between the inner surface () and the outer surface (), and an electrically conductive inner layer () to direct electrical charge toward and away from the inner surface () of the outer layer (), and to be coupled to an electrical source to control a transfer of the electrical charge.