Photoreceptor drum axle improvement
US5444516A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1994 |
| Grant date | Aug 22, 1995 |
| Priority date | — |
| Expiry date | Apr 28, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/183
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A sleeve for the shaft section of a plastic drum axle used in toner cartridges for printing, copy and facsimile machines to rotatively support the photoreceptor drum. The sleeve is made of strong plastic or metal and is sized to snugly fit around the shaft section. Glue may be used to further secure the sleeve to the shaft section. The sleeve is slid onto the drum axle shaft section and abuts against the drum axle attach section. The sleeve has a length and an outside diameter which allow the sleeve to snugly fit in the gear piece of the photoreceptor drum, eliminating the clearance between the shaft section and gear piece passage. In this way the gear piece and photoreceptor drum are rotatively supported on the drum axle along nearly the entire length of the shaft section, preventing the photoreceptor drum from wobbling during operation and rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.