Control unit and method for controlling motor for use in printer, and storage medium storing control program
US6528962B1 · kind B1 · utility
11Cited by
9References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2000 |
| Grant date | Mar 4, 2003 |
| Priority date | — |
| Expiry date | Aug 10, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J19/202
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A control unit suppresses fluctuation in speed of a motor in a printer. The control unit has a speed detecting part for detecting the speed of the motor in a predetermined period tv, and an average speed calculating part for calculating an average speed based on a current speed detected by the speed detecting part, and on a speed which has been detected n (n≧2) periods tv before, ntv corresponding to substantially half period of the fluctuation in speed of the motor. The control unit also has a speed control part for controlling the speed of the motor based on a deviation of the average speed from a target speed of the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.