Ink jet recording method and apparatus controlling driving signals in accordance with head temperature
US5861895A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1995 |
| Grant date | Jan 19, 1999 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14379
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In the recording method and apparatus, ink is ejected by thermal energy produced by a heat generating element of a recording head in response to application of driving signals thereto, the driving signals being of plural waveforms including a fixed waveform. The method includes the steps of detecting a temperature of the recording head and applying the driving signals to the heat generating element of the recording head. The waveforms of the driving signals are changed in accordance with the temperature of the recording head when the temperature of the recording head is below a predetermined level, and the waveforms of the driving signals comprise the fixed waveform when the temperature of the recording head exceeds the predetermined level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.