Magnetic brush development method
US4540645A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1984 |
| Grant date | Sep 10, 1985 |
| Priority date | — |
| Expiry date | Jan 27, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/1085
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is a magnetic brush development method comprising supplying a two-component type developer comprising a mixture of magnetic carrier particles with toner particles chargeable by friction with the magnetic carrier particles onto a developing sleeve consisting of a non-magnetic sleeve having a magnet installed therein to form a magnetic brush of the developer, and bringing the magnetic brush in sliding contact with the surface of a photosensitive material having an electrostatic latent image formed thereon in the state where a bias voltage is applied between the photosensitive material and the sleeve, whereby a toner image corresponding to the electrostatic latent image is formed, wherein the two-component type developer comprises a ferrite carrier and electroscopic toner particles at a weight ratio of from 4/1 to 20/1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.