Heater and image heating device including the same
US9098034B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 5, 2012 |
| Grant date | Aug 4, 2015 |
| Priority date | — |
| Expiry date | Mar 5, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2203/016
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In order to suppress excessive temperature rise at a non-sheet-passing region while suppressing the deterioration of fixability in case of heating small size sheets, a heater includes a first heat-generation line and a second heat-generation line, which are independently controllable, wherein the first heat-generation line is configured so that a plurality of heat-generation resistors having positive resistance-temperature characteristics is electrically connected in parallel to each other between a first electro-conductive element and a second electro-conductive element, and the heat-generation resistors are adjusted so that a heat-generation amount per unit length of the first heat-generation line in a lengthwise direction of the heater decreases from a recording material conveyance reference towards a end portion in the lengthwise direction, and an image heating device having the heater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.