Ink ejecting device
US6494555B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1999 |
| Grant date | Dec 17, 2002 |
| Priority date | — |
| Expiry date | Jun 4, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
When a print data reception circuit 2 receives a print command, the print data reception circuit 2 transmits data indicating this to a drive signal generating circuit 6, and also transmits data indicating a desired member of ejections per dot to a drive signal correction circuit 8. Based on memory content of a reference data storage circuit 4, the drive signal generating circuit 6 produces a reference drive signal, which includes a predetermined maximum number of ejection pulses for printing each single dot, and transmits it to the drive signal correction circuit 8. The drive signal correction circuit 8 produces a print drive signal by removing unnecessary ejection pulses from the reference drive signal, in accordance with the desired number of ejection pulses indicated in the print command, and than transmits the print drive signal to a charge/discharge circuit 10. The charge/discharge circuit 10 controls electric potential difference between electrodes 619, 921 in accordance with high and low levels of the application drive signal. The piezoelectric material between the electrodes 619 and 621 deforms according to the electric potential difference, so that a desired number of ink …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.