Photo conductor overcoat comprising radical polymerizable charge transport molecules and hexa-functional urethane acrylates
US8940466B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2012 |
| Grant date | Jan 27, 2015 |
| Priority date | — |
| Expiry date | Dec 31, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/14734
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An overcoat layer for an organic photoconductor drum of an electrophotographic image forming device is provided. The overcoat layer is prepared from an (UV) ultraviolet curable composition including a urethane resin having at least six radical polymerizable functional groups and a charge transport molecule having at least one radical polymerizable functional group. The amount of the urethane resin having at least six radical polymerizable functional groups in the curable composition is about 35 percent to about 65 percent by weight. The amount of the charge transport molecules having at least one radical polymerizable functional group in the curable composition is about 35 percent to about 65 percent by weight. This overcoat layer improves wear resistance of the organic photoconductor drum without negatively altering the electrophotographic properties, thus protecting the organic photoconductor drum from damage and extending its useful life.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.