Ink jet recording apparatus with driving means providing a driving signal having upper and lower limits in response to an input signal
US5172142A · kind A · utility
23Cited by
14References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1991 |
| Grant date | Dec 15, 1992 |
| Priority date | — |
| Expiry date | Apr 8, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/072
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The driving frequency of a head is changed in conformity with temperature, and density data is converted into an optimum head driving voltage in conformity with temperature, whereby the discharge driving frequency and driving voltage of the recording head become optimum under any temperature condition, thus recording of high quality is ensured and since irregularities caused by the temperature variation of the recording head are eliminated. The driving voltage is set by a drive control circuit that includes a plurality of limiters, one of which is chosen in accordance with ambient temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.