Method for controlling the over-energy applied to an inkjet print cartridge using dynamic pulse width adjustment based on printhead temperature
US6302507A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1999 |
| Grant date | Oct 16, 2001 |
| Priority date | — |
| Expiry date | Oct 13, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/17
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A temperature control system for an inkjet printhead assembly includes a printhead assembly having ink ejection elements energizable by an electrical pulse having an amplitude and pulse width, a sensor coupled to the printhead assembly for generating a signal representative of a printhead temperature. A controller reads a nominal operating pulse width, pulse width calibration data and the signal from the sensor. The controller calculates an adjusted pulse width using the nominal operating pulse width, the pulse width calibration data and the signal from the sensor. The controller uses the adjusted pulse width to control the printhead temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.