Pressure-sensitive accumulator for ink-jet pens
US5409134A · kind A · utility
106Cited by
30References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1991 |
| Grant date | Apr 25, 1995 |
| Priority date | — |
| Expiry date | Dec 11, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17513
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The accumulator regulates changes in the back pressure of an ink-jet pen reservoir so that ink does not leak from the pen print head and so that the print head is able to completely empty the reservoir of ink. The accumulator includes a flexible bag that is mounted to a flat curved spring. The elasticity of the spring tends to contract the bag as the bag expands in response to back pressure reduction in the reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.