The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 14, 2009
Filed:
Mar. 02, 2006
Tsutomu Takatsuka, Kanagawa, JP;
Toshiya Kojima, Kanagawa, JP;
Tadahisa Sato, Minami-Ashigara, JP;
Hideki Maeta, Minami-Ashigara, JP;
Yuki Shimizu, Minami-Ashigara, JP;
Tsutomu Takatsuka, Kanagawa, JP;
Toshiya Kojima, Kanagawa, JP;
Tadahisa Sato, Minami-Ashigara, JP;
Hideki Maeta, Minami-Ashigara, JP;
Yuki Shimizu, Minami-Ashigara, JP;
Fujifilm Corporation, Tokyo, JP;
Abstract
The inkjet recording apparatus includes: a recording head including nozzles which discharge droplets of ink onto a recording medium for printing, the ink 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; a computing device which computes a non-operational time period for one of the nozzles; a calculating device which calculates a predicted non-operational time period until a next operation of the one of the nozzles; and a preliminary discharge control device which performs control whereby preliminary discharge of the one of the nozzles is carried out if a total of the non-operational time period and the predicted non-operational time period exceeds a reference time period.