Recording apparatus and supply system having residual ink quantity detection
US5623290A · kind A · utility
36Cited by
21References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1994 |
| Grant date | Apr 22, 1997 |
| Priority date | — |
| Expiry date | Feb 9, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/17586
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A recording apparatus includes a recording head which is scanned, a supply system containing an amount of ink and a detector for the residual ink quantity in the supply system. The residual ink quantity is detected by detecting deviation of a deviation member; this deviation occurs upon a change in pressure in an ink supply path in the ink supply system. The detection is performed after a predetermined time delay with respect to a signal relating to a change of scan direction or with respect to operation of a pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.