Cleaning blade, method for manufacturing cleaning blade, process cartridge, and electrophotographic apparatus
US9170556B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2014 |
| Grant date | Oct 27, 2015 |
| Priority date | — |
| Expiry date | Apr 28, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G21/1814
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A urethane rubber cleaning blade, wherein a surface of a contact portion of the cleaning blade that comes into contact with a member to be cleaned has a Young's modulus (Y0) of 10 mgf/μm2 or more and 400 mgf/μm2 or less, the ratio (Y50/Y0) of the Young's modulus (Y50) of an internal portion of the cleaning blade 50 μm spaced apart from the surface of the contact portion to the Young's modulus (Y0) is 0.5 or less, and the average rate of change in Young's modulus from the surface to an internal portion of the cleaning blade 20 μm spaced apart from the surface is greater than or equal to the average rate of change in Young's modulus from the internal portion of the cleaning blade 20 μm spaced apart from the surface to an internal portion of the cleaning blade 50 μm spaced apart from the surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.