EP 1149704 A1 20011031 - Ink jet apparatus, ink apparatus driving method, and storage medium for storing ink jet apparatus control program
Title (en)
Ink jet apparatus, ink apparatus driving method, and storage medium for storing ink jet apparatus control program
Title (de)
Tintenstrahlapparat, Ansteuerungsverfahren für Tintenapparat und Speichermedium zur speicherung des Ansteuerungsprogrammes für Tintenstrahlapparat
Title (fr)
Appareil à jet d'encre, procédé de commande pour appareil à encre et support de mémorisation pour logiciel de commande pour appareil à jet d'encre
Publication
Application
Priority
JP 2000125583 A 20000426
Abstract (en)
Three types of ink droplets, that is, large, medium, and small droplets are ejected to produce a gray-scale image, and three drive waveforms are prepared for each of the three types of ink droplets. The drive waveform to print a dot is selected by judging whether there is ink ejection immediately before and/or after the dot to be printed and the type of each droplet ejected immediately before and/or after the dot to be printed. An optimum drive waveform can be selected according to vibrations in the ink channel. Thus, high-quality printing is achieved without partially unstable dots and changes in the ink droplet volume. A piezo ink droplet ejecting apparatus for printing gray-scale images, comprising a controller for determining an ejection waveform to be used and providing activation instructions to the activation circuit on a basis of a size of a required dot and whether another dot is present at at least one of immediately before and immediately after the required dot. <IMAGE>
IPC 1-7
IPC 8 full level
B41J 2/01 (2006.01); B41J 2/045 (2006.01); B41J 2/055 (2006.01); B41J 2/205 (2006.01)
CPC (source: EP)
B41J 2/04573 (2013.01); B41J 2/04581 (2013.01); B41J 2/04588 (2013.01); B41J 2/04591 (2013.01); B41J 2/04593 (2013.01); B41J 2/04595 (2013.01); B41J 2/04596 (2013.01); B41J 2202/10 (2013.01)
Citation (search report)
- [X] EP 0895862 A1 19990210 - SEIKO EPSON CORP [JP]
- [A] EP 0636477 A2 19950201 - TEKTRONIX INC [US]
- [A] EP 0738598 A2 19961023 - SEIKO EPSON CORP [JP]
- [X] PATENT ABSTRACTS OF JAPAN vol. 1999, no. 11 30 September 1999 (1999-09-30)
- [A] PATENT ABSTRACTS OF JAPAN vol. 2000, no. 03 30 March 2000 (2000-03-30)
Designated contracting state (EPC)
DE GB SE
DOCDB simple family (publication)
EP 1149704 A1 20011031; EP 1149704 B1 20040922; DE 60105686 D1 20041028; DE 60105686 T2 20060216; JP 2001301206 A 20011030; JP 4491907 B2 20100630
DOCDB simple family (application)
EP 01303733 A 20010424; DE 60105686 T 20010424; JP 2000125583 A 20000426