Finger driver and printer
US5239318A · kind A · utility
10Cited by
5References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 15, 1991 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Nov 15, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/40
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A driver for the finger electrodes in a charge-deposition print cartridge controls the finger potential between a printing and a non-printing state. All fingers are reset at once by a common power source, to which each is connected by a diode. Charge storage provided in each finger electrode line keeps the finger at a back-biased potential without deterioration by crosstalk until it is next positively driven to a printing state. Binary-coded drive data is checked for errors at the input, and the charge delivered to each finger is monitored at the output to identify data transmission or cartridge electrode faults.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.