Driving method and apparatus for liquid discharge head
US6676238B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2002 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Sep 12, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A driving method for a liquid discharge head having a discharge port for discharging liquid; a pressure-applying portion communicating with the discharge port, for applying discharge pressure to the liquid; and a pressure generating device for generating the pressure. The method includes a step of applying first and second discharge pulses for discharging liquid, to the pressure generating device in a sequential manner in response to a one-dot discharge instruction. The pulse widths of the first and second discharge pulses and a rest time between the first and second discharge pulses are determined so that the volume of a first liquid discharged in response to the first discharge pulse is equal to or greater than that of a second liquid discharged in response to the second discharge pulse and the discharge speed of the first liquid is lower than the discharge speed of the second liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.