Drive apparatus and image forming apparatus
US10640315B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2018 |
| Grant date | May 5, 2020 |
| Priority date | — |
| Expiry date | Oct 26, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2555/26
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A drive apparatus according to the present invention includes a stepping motor that transmits power to a rotating shaft of a conveyance roller, a brushless motor that transmits power to the rotating shaft of the conveyance roller, a first controller that controls an operation of the stepping motor so that the stepping motor rotates at a constant speed, and a second controller that controls an operation of the brushless motor. The second controller switches control of the brushless motor between, in accordance with a conveyance state of the sheet, assist control in which power of the brushless motor assists a rotation of the stepping motor, brake control in which power of the brushless motor prevents the rotation of the stepping motor, and neutral control in which power of the brushless motor does not affect the rotation of the stepping motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.