Ink jet type printer head
AssigneeFuji Xerox Co., Ltd.
InventorShinji Seto
Life of this patent
Estimating the term…
Abstract
An ink jet type printer head is provided which can be simply assembled and in which malfunctions such as leak of ink, peeling-off of members or the like making up the ink jet type printer head are reduced. Grooves going around along a corresponding position inside a space portion of each of pressure chambers are formed on a surface of one piece of a piezoelectric element plate to partition the piezoelectric element plate and each portion of the piezoelectric element plates partitioned by these grooves acts as a piezoelectric element for each of the pressure chambers. Since a non-moving section having the same thickness as that of the piezoelectric elements among piezoelectric elements is formed, a vibrating plate can be firmly fixed to pressure chamber plate containing a partitioning wall portion between pressure chambers.
Claims20
An ink jet print head comprising:
- a pressure chamber plate having a plurality of pressure chambers;
- a piezoelectric element plate having a plurality of piezoelectric elements each of which deform upon the application of a voltage thereto and at least one non-moving section which does not deform upon the application of the voltage to any of the plurality of piezoelectric elements, each of the plurality of piezoelectric elements being positioned so as to correspond to a respective pressure chamber of the plurality of pressure chambers, wherein the plurality of piezoelectric elements and the at least one non-moving section are separated by grooves which are formed on a surface of the piezoelectric element plate so as to surround and define each of the plurality of piezoelectric elements;
- and
- a vibrating plate sandwiched between the pressure chamber plate and the piezoelectric element plate so as to cover the plurality of pressure chambers, wherein
- the plurality of piezoelectric elements and the at least one non-moving section have substantially the same thickness.
A method of manufacturing an ink jet print head, the method comprising:
- forming grooves in a surface of a piezoelectric element plate so as to define a plurality of plurality of piezoelectric elements each of which deform upon application of a voltage thereto and at least one non-moving section which does not deform upon the application of the voltage to any of the plurality of piezoelectric elements, wherein the grooves surround the plurality of piezoelectric elements and separate the plurality of piezoelectric elements from the at least one non-moving section;
- bonding the piezoelectric element plate to a vibrating plate after the grooves are formed in the surface of the piezoelectric element plate;
- and
- bonding the vibrating plate to a pressure chamber plate having a plurality of pressure chambers, wherein
- each of the plurality of piezoelectric elements are positioned so as to correspond to a respective pressure chamber of the plurality of pressure chambers, and
- the plurality of piezoelectric elements and the non-moving section have substantially the same thickness.
Dependencies are inferred from the claim text.