Apparatus for evaluating characteristics of photosensitive drum for electrophotography
US5181071A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Dec 2, 1991 |
| Grant date | Jan 19, 1993 |
| Priority date | — |
| Expiry date | Dec 2, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/751
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus for evaluating the characteristics of a photosensitive drum for use in electrophotography including a rotatable photosensitive drum having characteristics to be measured, a charging portion and an exposure light source portion and the like respectively secured to portions adjacent to the photosensitive drum. The surface potential of the photosensitive drum, which is generated due to operation of the charging portion and the exposure light source portion or the like, is measured by a potential measuring probe which is, together with the charged portion and the exposure light source portion and the like, secured adjacent to a position of the photosensitive drum, at which light is applied at the shortest distance from the exposure light source portion. The photosensitive drum is moved along its lengthwise direction so that the surface potential of the photosensitive drum is measured by the potential measuring probe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.