Image forming apparatus
US9639039B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | May 4, 2016 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | May 4, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00738
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus detects that the temperature of a fixing member reaches a lower limit value at which the temperature once reduced by the start of a heating and fixing process to a paper turns to rise, after an image forming operation starts, and determines the type of the paper based on at least one of an elapsed time from a predetermined reference time point after the image forming operation starts to a time point at which it is detected that the temperature reaches the lower limit value, and a temperature difference between the temperature of the fixing member at the reference time point and the lower limit value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.