Method and apparatus for machine specific overcurrent detection
US6758547B2 · kind B2 · utility
3Cited by
19References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2002 |
| Grant date | Jul 6, 2004 |
| Priority date | — |
| Expiry date | Jul 10, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J29/393
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention is drawn to a test circuit for an ink jet printer which measures the voltage decay over time. Specifically, the test circuit utilizes a known resistor connected to the power source (voltage) and the printer. The printer functions as a capacitor to complete the test circuit as an RC circuit. After isolating the power source from the test circuit, the voltage decay is monitored to indicate the presence of a short circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.