Ink level sensor
US5689288A · kind A · utility
38Cited by
14References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1994 |
| Grant date | Nov 18, 1997 |
| Priority date | — |
| Expiry date | Jun 17, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/17583
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A flexible bar connected to an actuator is suspended within an ink reservoir. The bar is preferably mounted in a cantilever or free-standing mode and vibrates in response to signals from the actuator. When the actuator signals are discontinued the bar continues to vibrate and causes the actuator to generate signals that are analyzed to determine the level of ink in the reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.