Temperature detector
US4650347A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 1985 |
| Grant date | Mar 17, 1987 |
| Priority date | — |
| Expiry date | Aug 5, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/24
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrostatic copying apparatus having a semiautomatic document supplying and discharging device and a sorter in addition to its main body. The main body of the apparatus includes a rotatable photosensitive member, a device for forming a latent electrostatic image on the photosensitive member, a developer, a transfer device, a device for conveying a copying paper, a cleaner and a heat fixing device. Various improvements have been made in the manner of controlling cleaning, the manner of controlling the delivery of a copying paper, the manner of controlling troubleshooting and display, the manner of controlling interrupting copying, the manner of controlling heating, the manner of distribution electric power, etc. The heating is controlled by a parallel network of linear circuits including a temperature detector and a multi-element voltage dividing circuit, the elements of which can be switched into and out of operation to alter the sensed temperature to which the network responds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.