Temperature control arrangement for heat roller
US4556779A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1983 |
| Grant date | Dec 3, 1985 |
| Priority date | — |
| Expiry date | Mar 3, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/2039
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A temperature control arrangement for a heat roller, which includes an infrared sensor unit disposed in the vicinity of the heat roller and including a pyroelectric infrared sensor, a chopper mechanism and a reference temperature measuring heat sensitive element, a set temperature signal generation circuit for the heat roller, a comparison circuit for comparing a temperature detection value of the heat roller as detected by the sensor unit with the set temperature signal from the set temperature signal generation circuit, and a control circuit for subjecting a heater element of the heat roller to on/off control based on a comparison signal of the comparison circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.