The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 02, 2007
Filed:
Apr. 28, 2004
Hiroyuki Matsuba, Ohnojo, JP;
Tohru Nakagawa, Kusatsu, JP;
Hideo Torii, Higashiosaka, JP;
Takeshi Kamada, Nara, JP;
Kazunari Chikanawa, Tamana, JP;
Hiroaki Nakashima, Kasuga, JP;
Seishi Tomari, Kasuya-gun, JP;
Hiroyuki Matsuba, Ohnojo, JP;
Tohru Nakagawa, Kusatsu, JP;
Hideo Torii, Higashiosaka, JP;
Takeshi Kamada, Nara, JP;
Kazunari Chikanawa, Tamana, JP;
Hiroaki Nakashima, Kasuga, JP;
Seishi Tomari, Kasuya-gun, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An ink jet recording apparatus, which performs printing by ink ejection, includes a pressure chamber in which ink liquid is filled; a nozzle hole () which is formed so as to communicate with the pressure chamber; a piezoelectric element () which is formed on the pressure chamber, and deforms the pressure chamber by mechanical expansion and contraction, whereby pressure is generated in the pressure chamber and ink is ejected from the nozzle hole (); and a dew point control unit () which maintains a dew point in an atmosphere of the piezoelectric element () and the vicinity of the piezoelectric element at a lower value than a dew point in an environment where the ink jet recording apparatus is set. The dew point control unit () includes a compressor (), and an air drier () which dries compression gas from the compressor () and feeds it to the piezoelectric element.