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1. (WO1998052761) PRINTER AND PRINTING THEREFOR
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/052761 International Application No.: PCT/JP1998/002216
Publication Date: 26.11.1998 International Filing Date: 20.05.1998
IPC:
B41J 2/045 (2006.01) ,B41J 2/175 (2006.01) ,B41J 2/505 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
41
PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
J
TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2
Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
005
characterised by bringing liquid or particles selectively into contact with a printing material
01
Ink jet
015
characterised by the jet generation process
04
generating single droplets or particles on demand
045
by pressure, e.g. electromechanical transducers
B PERFORMING OPERATIONS; TRANSPORTING
41
PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
J
TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2
Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
005
characterised by bringing liquid or particles selectively into contact with a printing material
01
Ink jet
17
characterised by ink handling
175
Ink supply systems
B PERFORMING OPERATIONS; TRANSPORTING
41
PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
J
TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2
Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
485
characterised by the process of building-up characters applicable to two or more kinds of printing or marking processes
505
from an assembly of identical printing elements
Applicants:
SEIKO EPSON CORPORATION [JP/JP]; 4-1, Nishi-Shinjuku 2-chome Shinjuku-ku Tokyo 163-0811, JP (AllExceptUS)
KANAYA, Munehide [JP/JP]; JP (UsOnly)
SHIMADA, Kazumichi [JP/JP]; JP (UsOnly)
Inventors:
KANAYA, Munehide; JP
SHIMADA, Kazumichi; JP
Agent:
IGARASHI, Takao ; Chuo Fushimi Building 3F 3-2, Nishiki 1-chome Naka-ku, Nagoya-shi Aichi-ken 460-0003, JP
Priority Data:
9/13010020.05.1997JP
Title (EN) PRINTER AND PRINTING THEREFOR
(FR) IMPRIMANTE ET PROCEDE D'IMPRESSION ASSOCIE
Abstract:
(EN) A printer aiming at preventing the banding which has been caused by an accumulated error of paper feeding or by a difference in a drying level of ink due to a time difference in the raster forming thereby to invite a deterioration in the image quality. The printer comprises: a printing head (28) having a nozzle array composed of a plurality of nozzles; a main scan driver (3) for the printing head (28); a printing head driver (5) for driving the nozzles selected from the nozzle array; a sub-scan driver (4) for carrying a printing medium (8) in a sub-scanning direction; and a driver control unit (2) for controlling the main scan driver (3), the sub-scan driver (4) and the printing head driver (5) to print on the printing medium (8) by the printing head (28). At a time of a fixed pitch sub-scanning print or an overlap print, dots are printed adjacent to each other between two dots, where banding is likely to occur under the control of the driver control unit (2) by the nozzles which are not employed in the particular printing mode.
(FR) Cette invention se rapporte à une imprimante visant à prévenir l'effet de bande qui est causé par une erreur d'accummulation de l'alimentation en papier ou par une différence du niveau de séchage de l'encre due à un écart de temps dans la formation de la trame, induisant ainsi une détérioration de la qualité de l'image. Cette imprimante comprend une tête d'impression (28) comportant un groupe matriciel de buses composé de plusieurs buses; un pilote de balayage principal (3) pour la tête d'impression (28); un pilote de tête d'impression (5) servant à commander des buses choisies dans le groupe matriciel de buses; un pilote de balayage secondaire (4) servant à l'acheminement des supports d'impression (8) dans une direction de balayage secondaire; une unité de commande de pilote (2) servant à contrôler le pilote de balayage principal (3), le pilote de balayage secondaire (4) et le pilote de tête d'impression (5), pour permettre l'opération d'impression sur le support d'impression (8) par la tête d'impression (28). Lors d'une opération d'impression par balayage secondaire à pas fixe ou lors d'une opération d'impression avec chevauchement, des points sont imprimés à proximité adjacente les uns des autres entre deux points, où un effet de bande risque de se produire, sous le contrôle de l'unité de commande de pilote (2) par les buses qui ne sont pas utilisées dans le mode d'impression particulier.
front page image
Designated States: US
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
EP0927633US6439677