Electrostatic latent image developing apparatus
US4708458A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1986 |
| Grant date | Nov 24, 1987 |
| Priority date | — |
| Expiry date | Mar 25, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0889
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrostatic latent image developing apparatus for use in a copying machine or the like, which comprises a transport and supply device for circulating and transporting a developer mix while mixing and stirring the developer mix, towards a developing device for developing an electrostatic latent image formed on an electrostatic latent image carrier, a toner replenishing device for replenishing the transport and supply device with a new toner material, a toner concentration detector for detecting a toner concentration of the developer mix, a drive control for the setting of a toner concentration reference value which is operable to at least stir the developer mix separately from normal developing operation, a memory for storing a reference value detected by the detector at the time of driving toner concentration reference value setting, and a toner replenishment control for comparing a detection value of the detector with the toner concentration reference value during the normal developing operation and for actuating the toner replenishing device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.