Ink jet recording head and method for manufacturing the same

Details Ink jet recording head and method for manufacturing the same Ink jet recording head and method for manufacturing the same

2005-09-13

2005-09-13

Alanko, Anita (Department: 1765)

Etching a substrate: processes

Forming or treating thermal ink jet article

C216S041000, C216S056000, C029S890100

Reexamination Certificate

active

06942815

ABSTRACT:
An ink jet recording head is capable of: preventing any of stagnation in ink flow, formation of vapor bubbles, cavitation, or like problems from occurring in the ink flow; realizing an excellent ink ejection operation, and thereby realizing a high quality gradation expression in recording; and, lessening a degree of a required accuracy both in dimension and in alignment of its components being stacked together. In a method for manufacturing the ink jet recording head provided with a pressure generating chamber, this chamber is constructed of a through-hole of a chamber plate and a pair of plates, between which plates the chamber plate is sandwiched. The processing step for forming this through-hole further comprises the sub-steps of: forming a first resist film and a second resist film on a first and a second surface of the chamber plate, respectively, wherein the resist films assume substantially a same shape, but are different in length from each other when measured in a direction parallel to a flow direction of ink; and, etching away both the first and the second surface of the chamber plate using the resist films as its masks so that the through-hole is formed in the chamber plate and serves as the pressure generating chamber.

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