Liquid ejection device and image forming apparatus
US7255427B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 18, 2005 |
| Grant date | Aug 14, 2007 |
| Priority date | — |
| Expiry date | Feb 13, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/21
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The liquid ejection device comprises: an ejection head including a plurality of nozzles which eject droplets of liquid onto an ejection receiving medium; a liquid flow speed determining device which determines a flow speed of the liquid in each of the nozzles, the liquid flow speed determining device being arranged in each of the nozzles; an ejection abnormality detecting device which detects an ejection abnormality in each of the nozzles according to the flow speed of the liquid determined by the liquid flow speed determining device; an ejection direction deflecting device which deflects a direction of ejection of a droplet of the liquid ejected from each of the nozzles, the ejection direction deflecting device being arranged in each of the nozzles; and an ejection compensation control device which performs control in such a manner that, when an abnormal one of the nozzles having an ejection abnormality is detected by the ejection abnormality detecting device, a compensatory ejection is performed by deflecting a direction of ejection of a droplet of the liquid ejected from one of the nozzles adjacent to the abnormal nozzle, by means of the ejection direction deflecting device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.