Charging member, process cartridge, and image-forming apparatus for reducing small color lines
US9939750B2 · kind B2 · utility
2Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2017 |
| Grant date | Apr 10, 2018 |
| Priority date | — |
| Expiry date | Feb 27, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G21/1814
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A charging member includes a support, a conductive elastic layer disposed on the support, and a surface layer disposed on the conductive elastic layer. Domains with current values of 2.5 pA or more have an average size of about 300 nm or less in a binary image created using a current value of 2.5 pA as a threshold from current measured by contacting a conical probe having a tip diameter of 20 nm with an outer surface of the surface layer and applying a voltage of 3 V between the conical probe and the support while moving the conical probe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.