Developer cartridge with counting mechanism
US8655223B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2010 |
| Grant date | Feb 18, 2014 |
| Priority date | — |
| Expiry date | Mar 30, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/553
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention provides a developer cartridge with a counting mechanism. The developer cartridge comprises a developer and the counting mechanism, wherein the counting mechanism is provided with protrusions which come in contact with a contact lever on an electronic photographing device so as to count the developer cartridge; and each protrusion has a first position and a second position in the direction perpendicular to a side wall of the developer cartridge, and is, in the first position, in contact with the contact lever, but is not, in the second position, in contact with the contact lever. The working principle of the developer cartridge adopting the counting mechanism is greatly different from the prior art. Therefore, the structure of the counting mechanism of the developer cartridge is simpler and more convenient and reliable; the production precision and the production cost are reduced; and the market competitiveness of the developer cartridge is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.