Process cartridge including photosensitive member having multiple grooves and image forming apparatus including the process cartridge
US10955792B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2019 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Nov 8, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G21/0011
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A process cartridge includes a developing device that supplies developer to a photosensitive member and an elastic portion that cleans a peripheral surface of the photosensitive member. Multiple grooves are formed side by side in a generatrix direction on the peripheral surface. The developer contains a toner including a toner particle and an organosilicon polymer having a structure represented by R—SiO3/2 covering the toner particle surface, where R represents a hydrocarbon group having at least 1 and not more than 6 carbon atoms. When a penetration amount of the elastic portion with respect to the photosensitive member is set as δ (mm), and a fixing rate of the organosilicon polymer on the surface of the toner particle is set as α (%), δ≤0.02×α−0.4 is satisfied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.