Image forming apparatus determining color misregistration based on various temperatures
US11086271B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2019 |
| Grant date | Aug 10, 2021 |
| Priority date | — |
| Expiry date | Oct 2, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0158
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The image forming apparatus stores a plurality of candidate formulas in a memory. Each of the candidate formulas is a formula for calculating a prediction formula for calculating a predicted value of the color misregistration amount based on an external exposure device temperature, which is a temperature of the atmosphere around the exposure device, an external machine temperature, and a heater temperature of a heater which heats the plurality of image forming units. The CPU determines the prediction formula from the plurality of candidate formulas according to the external exposure device temperature, the external machine temperature, and the heater temperature. The CPU calculates the predicted value of the color misregistration amount using the determined predicted formula, and performs a color misregistration correction according to the calculated predicted value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.