Image heating apparatus
US8791390B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 27, 2012 |
| Grant date | Jul 29, 2014 |
| Priority date | — |
| Expiry date | Sep 6, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2035
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image heating apparatus includes an endless belt; first, second, third and fourth resistors having resistances R1, R2, R3 and R4, arranged in this order from an upstream side in a feeding direction of the recording material, and R1=R2 and R3=R4. The connection state of the resistors is switchable between a first state in which the first and second resistors are connected in parallel, the third and fourth resistors are connected in parallel, and a set of the first and second resistors and a set of the third and fourth resistors are connected in parallel, and a second state in which the first resistor second resistors are connected in series, the third and fourth resistors are connected in series, and a set of the first and second resistors and a set of the third and fourth resistors are connected in parallel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.