Ejection device and ejection method with uneven liquid...

Details Ejection device and ejection method with uneven liquid... Ejection device and ejection method with uneven liquid...

2008-10-14

2011-10-04

Rogers, Scott A (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S003140, C358S003260, C358S502000, C347S012000, C347S014000

Reexamination Certificate

active

08031367

ABSTRACT:
A liquid ejection device of the invention is constructed to eject a liquid to an ejection object. The liquid ejection device has a dot data generator configured to generate dot data from given image data, where the dot data represents a dot creation state in each pixel set on the ejection object. The liquid ejection device also has a liquid ejector equipped with a nozzle array including multiple nozzles aligned in a specific direction substantially perpendicular to a scanning direction. The liquid ejector makes multiple scans of the nozzle array in the scanning direction in a common printing area according to the generated dot data and ejects the liquid to the ejection object to create dots. The dot data generator has a specific print mode that generates corrective dot data by skipping a virtual dot array created by one scan from a group of dot arrays to be created by the multiple scans of the nozzle array, in order to prevent a potential contact with a dot array to be created by another scan. This arrangement desirably prevents unevenness of liquid ejection caused by a meandering scan of at least either the liquid ejector or the ejection object.

REFERENCES:
patent: 6254217 (2001-07-01), Askeland et al.
patent: 7742195 (2010-06-01), Kakutani
patent: 7830553 (2010-11-01), Kakutani
patent: 08-217302 (1996-08-01), None
patent: 2005-236768 (2005-09-01), None
patent: 2005-269527 (2005-09-01), None
patent: 2006027139 (2006-02-01), None

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