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1. US20080068415 - Liquid ejection apparatus and liquid ejection method

Office
United States of America
Application Number 11981407
Application Date 30.10.2007
Publication Number 20080068415
Publication Date 20.03.2008
Publication Kind A1
IPC
B41J 29/38
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
29Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
38Drives, motors, controls, or automatic cut-off devices for the entire printing mechanism
Applicants SONY CORPORATION
Inventors Kuwahara Soichi
Takenaka Kazuyasu
Ushinohama Iwao
Ikemoto Yuichiro
Agents ROBERT J. DEPKE;LEWIS T. STEADMAN
Priority Data 2003170269 16.06.2003 JP
Title
(EN) Liquid ejection apparatus and liquid ejection method
Abstract
(EN)

Even when ejection characteristics of ink droplets are dispersed between unit heads and when arrangement accuracies of unit heads are dispersed, stripe unevenness is alleviated by correction corresponding to each unit head. In a liquid ejection apparatus having a line head (10) arranged by juxtaposing a plurality of (unit) heads (11) of liquid ejection parts so as to connect the head (11) to the adjacent head (11), the liquid ejection apparatus includes ejection direction changing means for enabling the ejection direction of liquid droplets ejected from a nozzle of each liquid ejection part to change in a plurality of directions in the arranging direction of liquid ejection parts and reference direction setting means for individually setting one reference principal direction for each head (11) among a plurality of ejection directions of liquid droplets by the ejection direction changing means. In the (N−1)th and the (N+1)th head 11, the third ejection direction from the left is established as the principal direction while in the Nth head 11, the second ejection direction from the right is established as the principal direction.