Ink jet recording head including temperature adjustment heater

Details Ink jet recording head including temperature adjustment heater Ink jet recording head including temperature adjustment heater

Filed on

2006-02-07

Date issued

2008-10-28

Examiner

Stephens, Juanita D (Department: 2853)

Patent Class

Incremental printing of symbolic information

SubClass

Ink jet

SubSubClass

Ejector mechanism

Other Related Categories

C347S043000

Type

Reexamination Certificate

Status

active

Patent number

07441878

Description

ABSTRACT:
An ink jet recording head can discharge a droplet of differently colored ink, so that the volume of the ink discharged is efficiently stabilized, without the apparatus size and the manufacturing costs being increased. Three ink supply ports are formed in a recording element board, and one nozzle array is arranged along one side of each ink supply port. The discharge portions for cyan ink and magenta ink, which have high visibility, are located on opposite sides of the recording element board, and the discharge portion for yellow ink, which has low visibility, is located in the center of the recording element board. Further, in the cyan ink and magenta ink discharge portions, sub heaters for temperature adjustment are arranged, relative to the ink supply ports, along the same sides as the nozzle arrays.

REFERENCES:
patent: 6527367 (2003-03-01), Yabe
patent: 6591500 (2003-07-01), Suzuki et al.
patent: 6733117 (2004-05-01), Tajima et al.
patent: 6799841 (2004-10-01), Iri et al.
patent: 2006/0181571 (2006-08-01), Iijima
patent: 7-52387 (1995-02-01), None

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