Line head inkjet priner

(54) LINE HEAD INKJET PRINER

(75) Inventors: Atsuo Sakaida, Gifu-shi (JP); Katsuaki Suzuki, Gifu-shi (JP)

Correspondence Address:
BANNER & WITCOFF, LTD.
Counsel for Brother Industries
1001 G STREET, N.W., 11TH FLOOR
WASHINGTON, DC 20001-4597 (US)

(73) Assignee: BROTHER KOGYO KABUSHIKI KAISHA, Nagoya-shi (JP)

(21) Appl. No.: 11/197,981

(22) Filed: Aug. 5, 2005

(30) Foreign Application Priority Data

Aug. 5, 2004 (JP) 2004-229736

Aug. 5, 2004 (JP) 2004-229737

Aug. 5, 2004 (JP) 2004-229738

Aline head inkjet printer includes an inkjet head, a controller and a storage unit. The controller generates n kinds of waveforms used to eject different amounts of ink from the nozzles (3 = n (natural number)). The storage unit stores a combination of m kinds of waveforms selected from the n kinds of waveforms, for each block including at least one nozzle (2 = m (natural number) = n-l). When the printer conducts gradation printing with using m kinds of waveforms selected from the n kinds of waveforms, a difference among the blocks in an amount of ejected ink per nozzle in a case of using the stored combinations of m kinds of waveforms for the respective blocks is smaller than that in a case of using one and the same combination of m kinds of waveforms for all the blocks.