Control apparatus of heat fixing unit of image recording apparatus
US5872620A · kind A · utility
4Cited by
3References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 23, 1996 |
| Grant date | Feb 16, 1999 |
| Priority date | — |
| Expiry date | Feb 23, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/2003
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In order to reduce a temperature change of a fixing unit and to prevent a reduction of the life of a switching device for controlling the current supply of a heater of the fixing unit and to reduce flickering noises, an on/off control of the heater is executed in every predetermined period and the order of ON and OFF states of the heater is changed every period when the fixing unit is heated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.