Method and system for improving electrophotographic run cost through cyclic efficiency of the charging device
US7447452B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2006 |
| Grant date | Nov 4, 2008 |
| Priority date | — |
| Expiry date | Jun 26, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0216
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The life of the photoconductor in an image forming apparatus is typically limited by the eventual occurrence of some form of print quality defect related to the photoconductor. One of the typical failure mechanisms is the slow wearing away of the surface layer of the photoconductor. Photoconductor run life is improved by operating a charging station in a low wear mode during certain circumstances, including: during printing of a low stress page as detected based on the image data; during at least one of cycle up and cycle down operations to control charging of the at least one photoconductor over at least one print zone for at least one cycle of rotation of the at least one photoconductor; during printing of at least one test patch in a process control cycle; and upon determination from the image data that at least one photoconductor will not contribute to the printing during a next print cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.