Method for driving ink jet printing head and circuits of the same
US6257687A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 11, 2000 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | May 11, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/04588
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for driving an ink jet printing head and circuits of the same are provided which are capable of forming fine ink drops in a stable manner and jetting the ink drops from each nozzle with high jetting efficiency and of thereby printing a character or an image with high quality on a printing medium. In the method for driving the ink jet printing head, a waveform of a driving signal is generated by a first voltage changing process in which a voltage is applied to increase a content volume of a pressure generating chamber and by a second voltage changing process in which a voltage is applied to decrease the content volume of the pressure generating chamber and further a time interval between time to start the first voltage changing process and time to start the second voltage changing process is set to a length of time within a range of about three eighths to about three fourths of a natural period of a pressure wave produced in the pressure generating chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.