Printer ink cartridge with drive logic integrated circuit
US5646660A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 9, 1994 |
| Grant date | Jul 8, 1997 |
| Priority date | — |
| Expiry date | Aug 9, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J25/34
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A printer ink cartridge includes a rigid cartridge body containing ink, a plurality of ink orifices, a jet plate, a plurality of electrical conductors and a control and driver circuit. The control and driver circuit is attached to the cartridge body spaced apart from the jet plate, and the plurality of electrical conductors connect the jet plate to the control and driver circuit. The jet plate includes heating elements located proximate to an associated one of the ink orifices to heat a portion of the ink and to expelling the ink from the associated orifice. The control and driver circuit contains a control circuit and a plurality of driver circuits. A portion of the control circuit is connected to the plurality of driver circuits to control when one of the driver circuits is energized. Each of the driver circuits is connected to an associated one of the heating elements. When one of the driver circuits is energized, its associated heating element is energized to heat a portion of ink and to expel the ink from the jet plate. By locating the control and driver circuit on the ink cartridge, the print quality of the printer ink cartridge is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.