Title:
INK JET HEAD
Document Type and Number:
Japanese Patent JP3236669
Kind Code:
B2
Abstract:
PURPOSE: To make ejection speed of ink drops high, to reduce unevenness in values of driving voltage and to enhance reliability by using adhesive having modulus of elasticity in 3.5×106N/m2 or below as physical properties for material for an adhesive layer.
CONSTITUTION: An adhesive layer 3 interposed between a piezoelectric ceramic 1 and a glass plate 4 forming ink chambers for a drop-on-demand type ink jet head is made in modulus of elasticity of 3.5×106N/m2 or below. By applying voltage to driving electrodes 2 of the piezoelectric ceramic 1, walls 1a of the piezoelectric ceramic 1 makes vibrations that slide in the direction indicated by dotted lines in the attached figure. Since the adhesive layer 3 interposed between the piezoelectric ceramic 1 and the glass plate 4 is an elastic adhesive that is highly elastic, restraining force acting on vibrations of the walls 1a of the piezoelectric ceramic 1 is reduced, and thereby ink ejection can be made stably at high speed with driving voltage in lower values.
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Inventors:
Keisuke Kikawa
Takeshi Matsumoto
Masao Kunita
Takeshi Matsumoto
Masao Kunita
Application Number:
JP18060492A
Publication Date:
December 10, 2001
Filing Date:
June 16, 1992
Export Citation:
Assignee:
Citizen Watch Co., Ltd.
International Classes:
B41J2/045; B41J2/055; B41J2/16; (IPC1-7): B41J2/045; B41J2/055; B41J2/16
Domestic Patent References:
| JP445945A | ||||
| JP4163050A | ||||
| JP2277647A | ||||
| JP3169639A | ||||
| JP4163154A |
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