Image forming apparatus including a transfer member with a rotatable conductive shaft having a void and having an elastic portion which covers a periphery of the shaft
US11650523B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 2021 |
| Grant date | May 16, 2023 |
| Priority date | — |
| Expiry date | Oct 1, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/1675
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a case where a transfer roller is viewed from a direction orthogonal to a rotation axis direction of a shaft, the shaft includes in a longitudinal direction a first contact portion which is provided on an end portion side of an elastic portion and in which the shaft and the elastic portion are in contact with each other and a second contact portion which is provided on a more inner side than the first contact portion and in which the shaft and the elastic portion are in contact with each other. The transfer roller includes a void between the first contact portion and the second contact portion in the longitudinal direction, and the void is arranged at least on a more inner side than an end portion of a transfer material having a maximum size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.