Cap device for an ink jet recording head
US5416507A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 30, 1993 |
| Grant date | May 16, 1995 |
| Priority date | — |
| Expiry date | Mar 30, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/16508
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A cap device for an ink jet recording head includes a cap, a cap holder, a cylinder, a piston, and a cylinder driver. The cylinder includes therewithin a pump chamber of which the volume increases when the cylinder advances and decreases when the cylinder retracts, an ink discharge path, and communication control unit. When the cylinder advances to increase the volume of the pump chamber, the communication control unit disconnects the pump chamber from the ink discharge path, and when the cylinder retracts to decrease the volume of the pump chamber, the communication control unit connects the pump chamber with the ink discharge path. The piston includes an ink flow path of which the front end communicates with the through-hole and the rear end communicates with the pump chamber within the cylinder when the cylinder advances to reach a predetermined position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.