Reversible ink cartridge
US7164879B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2004 |
| Grant date | Jan 16, 2007 |
| Priority date | — |
| Expiry date | Dec 5, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/104
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A printer cartridge for electrographic printing (dry or liquid) is provided with two chambers connected by a developer transportation system that traverses a development zone in a first direction. As the toner (developer) from a first of the two compartments is fed through the development zone, excess or unused toner is transported by the developer transportation system into a second of the two compartments. When the first compartment has exhausted its supply of toner, there will be sufficient toner captured in the second compartment to allow for printing capability to be maintained in the system, without any replenishment. The direction of flow of developer during printing is reversed from the second compartment to the first compartment, passing through the development zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.