Developer unit and method thereof
US8626038B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2009 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Nov 7, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/11
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developer unit usable with a liquid electrophotographic printing apparatus having a photosensitive drum includes a developer roller configured to receive ink, and to selectively engage and rotatably transfer the ink to the photosensitive drum, the developer roller configured to switch between a contact mode when the developer roller is rotating and a non-contact mode when the developer roller is not rotating, a squeegee roller selectively in contact with the developer roller, the squeegee roller configured to at least condense the received ink on the developer roller in the contact mode, and configured to be apart from the developer roller in the non-contact mode, and a cleaner roller selectively in contact with the developer roller, the cleaner roller configured to remove remaining ink from the developer roller not transferred to the photosensitive drum in the contact mode, and to be apart from the developer roller in the non-contact mode, wherein at least one of the squeegee roller, the cleaner roller and the developer roller are configured to move between the contact mode and the non-contact mode in response to a rotational state of the developer roller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.