Title:
INK-JET PRINTER
Document Type and Number:
Japanese Patent JP3667473
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To speed up printing, by simultaneously forming each of dots belonging to a column corresponding to dots within a constant pitch so that the dots can be simultaneously printed in a column direction, increasing a count of ink-jet nozzles to be arranged in the column direction, increasing a rotational speed of a drum and making a rotational speed of the ink-jet nozzles constant.
SOLUTION: Each color nozzle unit 200C is synchronously reciprocated in a row direction (axial direction of a drum) by a constant pitch PT1 (e.g. 1/75inch). During the first half of the reciprocation, all dots I/N in the row are simultaneously printed to a printing medium with the use of an ink-jet nozzle 207 (207a1-207d2) arranged in the row direction. While the drum rotates once, each color nozzle unit 200C simultaneously prints each of dots (e.g. 3000 dots) belonging to a column corresponding to dots of the constant pitch PT1 with the use of both the ink-jet nozzle 207 arranged in the row direction with the constant pitch PT1 and the ink-jet nozzle 207 arranged in the column direction with a constant pitch PT2.
Inventors:
Yoshihide Akuzawa
Sakae Shiida
Juntaro Oku
Suzuki Hidenobu
Shinichiro Fujii
Sakae Shiida
Juntaro Oku
Suzuki Hidenobu
Shinichiro Fujii
Application Number:
JP31732996A
Publication Date:
July 06, 2005
Filing Date:
November 28, 1996
Export Citation:
Assignee:
TOSHIBA TEC CORPORATION
International Classes:
B41J2/21; B41J2/13; (IPC1-7): B41J2/21; B41J2/13
Domestic Patent References:
| JP55132254A | ||||
| JP10138518A | ||||
| JP10086416A | ||||
| JP7276638A | ||||
| JP6218947A | ||||
| JP6040028A | ||||
| JP5008408A |
Attorney, Agent or Firm:
Hisashi Hatano