Image forming apparatus including first and second guide frames for guiding attachment of drum cartridge to which developing cartridge is attached
US11188008B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2021 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Mar 31, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G21/1676
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus includes: a developing cartridge including a casing, a first electrical contact surface, and a holder movable relative to the casing; a drum cartridge including a drum frame, a second electrical contact surface, and a holder movable relative to the drum frame; and a main frame having an opening and including first and second guide frames facing in a facing direction, a first main electrical contact capable of being electrically connected to one of the first and second electrical contact surfaces, and a second main electrical contact positioned closer to the opening in an attachment direction and capable of being electrically connected to the remaining one of the first and second electrical contact surfaces. A distance in the facing direction between the first and second guide frames is reduced as the first and second guide frames extend toward the first main electrical contact in the attachment direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.