Roller for image forming apparatus
US5807004A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1996 |
| Grant date | Sep 15, 1998 |
| Priority date | — |
| Expiry date | Mar 29, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49563
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A roller for an image forming apparatus comprises: a core body having a shaft positioned in the center thereof, the core body being formed by solidifying a fluid around an outer circumference of the shaft; and a surface layer formed on a surface of said core body, the surface layer being made of hard rubber and having a uniform thickness over the surface of the core body. A mold for the roller, comprises: an inner surface whose section is the same as a section of the core body; a pair of half-split bodies, one end wall of each half-split body having a recess for clamping the shaft, other end wall of each half-split body having a injecting hole for injecting a core body forming fluid therefrom; and a stopper body serving as an aligning member having a through hole in the middle thereof for inserting the shaft thereinto, the stopper body further projecting a stopper on an outer circumference thereof for fitting the stopper into the injecting hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.