Image forming apparatus and droplet ejection control method

Incremental printing of symbolic information – Ink jet – Controller

Reexamination Certificate

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C347S010000, C347S100000

Reexamination Certificate

active

07571969

ABSTRACT:
The image forming apparatus includes a recording head which ejects droplets of a liquid onto a recording medium, the liquid containing fine particles of an organic pigment manufactured by the steps of: flowing a solution of an organic pigment dissolved in an alkaline or acidic aqueous medium through a channel which provides a laminar flow; and changing a hydrogen ion exponent (pH) of the solution in a course of the laminar flow.

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patent: 6172689 (2001-01-01), Cunnagin et al.
patent: 6527354 (2003-03-01), Takahashi
patent: 6582508 (2003-06-01), Dietz et al.
patent: 7216947 (2007-05-01), Kusunoki
patent: 2005/0062774 (2005-03-01), Kusunoki
patent: 2005/0109240 (2005-05-01), Maeta et al.
patent: 3-247450 (1991-11-01), None
patent: 10-250059 (1998-09-01), None
patent: 2002-146222 (2002-05-01), None

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