Image forming apparatus with controlled start-up of scanning motor
US10539905B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 23, 2018 |
| Grant date | Jan 21, 2020 |
| Priority date | — |
| Expiry date | Aug 23, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0121
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus: includes a developing member to be movable between a development position where the developing member contacts an image bearing member and a separated position where the developing member is separated from the image bearing member; and a control portion controls the number of rotations of a drive portion by causing a light source to emit a light beam when a rotating polygon mirror starts to rotate, and detecting the light beam emitted from the light source by a detecting portion, wherein when the rotating polygon mirror starts to rotate, the light beam does not enter an image region of the image bearing member and the light beam is detected outside the image region of the image bearing member by the detecting portion, in a state of the developing member having moved from the separating position to the development position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.