Printer cartridge with toner wall
US9046813B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 3, 2014 |
| Grant date | Jun 2, 2015 |
| Priority date | — |
| Expiry date | Jan 3, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/09
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An improved printer cartridge is provided with a barrier for reducing pressure on printing assembly components in an extended yield cartridge. A printing assembly, including cartridge casing, magnetic developer roller, and hopper, is provided for use with laser printers. A barrier formed by a base and a wall is positioned within the cartridge casing, between the magnetic developer roller and a feed section of the hopper. The wall of the barrier is tangent to the magnetic developer roller, minimizing the area of the magnetic developer roller which is exposed to a medium stored within the hopper and feed section, such as toner. Since exposed surface area is reduce, the amount of pressure on the magnetic developer roller is correspondingly reduced, allowing for an increase in lifespan for the magnetic roller and interactive components, primarily a doctor blade and sealing blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.