Base body for photosensitive drum and photosensitive drum
US6936389B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2001 |
| Grant date | Aug 30, 2005 |
| Priority date | — |
| Expiry date | Jul 17, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1393
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A resin made base body in the form of a pipe has (1) a plurality of alternating projections and depressions which are provided on an outer peripheral surface of the pipe and aligned in substantially parallel rows in one of an axial direction and a circumferential direction of the pipe; (2) a specular gloss at 60° of a surface of the pipe in a range of 15 to 25; or (3) a skin layer formed in an outer peripheral portion in the thickness direction of a peripheral wall of the pipe, wherein an amount of the conductive agent present in the skin layer is equal to, or less than, one-tenth an amount of the conductive agent present in a central portion in the thickness direction of the peripheral wall of the pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.