Image forming apparatus
US5623330A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 15, 1996 |
| Grant date | Apr 22, 1997 |
| Priority date | — |
| Expiry date | Apr 15, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24942
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In an image forming apparatus, a toner image is formed on an image carrier and the toner image thus formed is transferred onto a transfer material. The image forming apparatus solves troublesome matters of image quality and a transfer material conveying quality due to temperature and/or humidity variations without employing a separate temperature/humidity sensor. The transfer conveying belt includes at least two layers which are, a first layer having a surface resistance rate of 1-10.sup.10 .about.1-10.sup.16 and a second layer having a surface resistance rate of 1-10.sup.7 .about.1-10.sup.11, and the second layer is constructed with a rubber material having a temperature/humidity variation of electric resistance which is larger than a temperature/humidity variation of electric resistance of the first layer. Such a transfer conveying belt itself is then used as a temperature/humidity sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.