Printing activator test circuit generating back EMF
US4706561A · kind A · utility
12Cited by
16References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 8, 1986 |
| Grant date | Nov 17, 1987 |
| Priority date | — |
| Expiry date | Apr 8, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J29/393
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Detecting the inoperability of a plurality of printing element drivers without printing involving sequentially energizing each of the drivers with a shortened time duration pulse sufficient to produce a signal in indicating operability and/or inoperability but not sufficient to cause printing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.