Image heating apparatus and image forming apparatus
US10114318B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2017 |
| Grant date | Oct 30, 2018 |
| Priority date | — |
| Expiry date | Jul 24, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/80
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image heating apparatus heats an image formed on a recording material and includes a heater having a first heat generating block and a second heat generating block adjacent to the first. A power control portion controls electrical power supplied to the first and second blocks, independently. When an entire range in which the second block is provided is a range in which the recording material passes and only a portion of a range in which the first block is provided, electrical power supplied to the first is less than that supplied to the second. The power control portion controls the power so that a ratio of the power supplied to the first block to the power supplied to the second block decreases as a recording material passing range, in the range in which the first block is provided, decreases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.