Transmission device and transmission unit for photosensitive drum and drum unit having the transmission unit
US10185277B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 7, 2017 |
| Grant date | Jan 22, 2019 |
| Priority date | — |
| Expiry date | Nov 7, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/1657
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to a transmission device for engagement with a photosensitive drum having a drum axis, which includes a housing detachably attached to the photosensitive drum; a sleeve coupled with the housing and arranged coaxially to the drum axis; and a transmission unit having a shaft disposed to the sleeve and being rotatable about and movable along the drum axis relative to the sleeve. The shaft includes a first part, a second part and a bushing, each part has a body, the bodies of the first and second parts are detachably attached to each other, and the bushing is disposed outside the bodies of the first and second parts so that the first and second parts can be attached to each other firmly. Accordingly, the transmission device will not separate apart when it is driven to rotate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.