Detecting theft of print substance from a printing device
US6982810B2 · kind B2 · utility
0Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2001 |
| Grant date | Jan 3, 2006 |
| Priority date | — |
| Expiry date | Feb 5, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J29/393
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An amount of print substance in a printing device as well as an amount of print substance that should be in the printing device are identified. A difference between these amounts is determined and the difference compared to a threshold value. A determination that print substance has been removed from the printing device is made if the difference exceeds the threshold amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.