Magnetic developing method under A.C. electrical bias and apparatus therefor
US4292387A · kind A · utility
77Cited by
7References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1979 |
| Grant date | Sep 29, 1981 |
| Priority date | — |
| Expiry date | Jul 18, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/104
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This specification discloses a method of toner transfer development in which one-component magnetic developer is conveyed to a developing position by the action of a magnetic field and a low frequency alternating electrical bias is applied to the space between a latent image bearing member and a developer carrying member at that position to thereby develop a latent image. This development provides visible images excellent in sharpness and tone reproduction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.