Photoconductor having protective overcoat layer with a charge transport molecule with four radical polymerizable hydrophilic functional groups containing an oxygen atom and method of making the same
US10481512B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2018 |
| Grant date | Nov 19, 2019 |
| Priority date | — |
| Expiry date | Jul 31, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/14795
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An improved organic photoconductor drum used in an electrophotographic image forming device and method to make the same is provided. The organic photoconductor drum contains a protective overcoat. The protective overcoat is prepared from a curable composition including a charge transport molecule containing four radical polymerizable hydrophilic functional groups containing an oxygen atom of the general structure shown below: where R1 and R2 contain a spacer group and a radical polymerizable hydrophilic functional group containing an oxygen atom, R3 and R4 are a non-radical polymerizable functional group, and R5 and R6 contain a spacer group and a radical polymerizable hydrophilic functional group containing an oxygen atom. The curable composition may also contain at least one curing agent. This organic photoconductor drum has excellent wear resistance without negatively altering the electrophotographic properties, thus protecting the organic photoconductor drum from damage and extending its service life.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.