Developing apparatus
US5109254A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 1990 |
| Grant date | Apr 28, 1992 |
| Priority date | — |
| Expiry date | Aug 22, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S222/01
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing apparatus has a developer cartridge having a first developer storage room for storing an unused new developer, a second developer storage room for storing a used old developer, and shutter members for opening and closing openings of the first and second developer storage rooms; and a device for detachably attaching the developer cartridge to a section for exchanging the old developer for the new developer on a body side of the developing apparatus. The developer cartridge may be attached and detached from the developer exchanging section after deterioration of the developer in use is displayed, and the used developer is collected within the second developer storage room and the new developer is supplied into the developer cartridge after the collection of the used developer. The developer cartridge may be attached to the body of the developing apparatus at any time, and the used developer may be collected within the second developer storage room by operating the developer cartridge by a control signal from the body side of the developing apparatus when life of the developer in use is completed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.