Roller, rotating member unit, cartridge, and image forming apparatus
US9996020B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2017 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Jun 15, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/751
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A cylindrical shaft of a roller has facing surfaces which form a depression-protrusion-shaped portion of a joint of the cylindrical shaft and which face or make contact with each other and moreover which extend in a direction non-parallel to an axial direction of the cylindrical shaft, and the facing surfaces are inclined at a predetermined engagement angle with respect to a circumferential direction. A generating line of a circumferential surface of a coating layer that coats an outer circumference of the cylindrical shaft and a generating line of a circumferential surface of a photosensitive drum cross each other at a crossing angle smaller than the engagement angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.