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:
Aug. 30, 2016
Filed:
Sep. 10, 2015
Tomohiko Kohda, Ibaraki, JP;
Takeshi Shimizu, Kanagawa, JP;
Ryo Kasahara, Kanagawa, JP;
Kanshi Abe, Ibaraki, JP;
Takayuki Nakai, Kanagawa, JP;
Takahiro Yoshida, Ibaraki, JP;
Shiomi Andou, Kanagawa, JP;
Tomohiko Kohda, Ibaraki, JP;
Takeshi Shimizu, Kanagawa, JP;
Ryo Kasahara, Kanagawa, JP;
Kanshi Abe, Ibaraki, JP;
Takayuki Nakai, Kanagawa, JP;
Takahiro Yoshida, Ibaraki, JP;
Shiomi Andou, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A liquid discharge head includes a nozzle plate having nozzles arrayed to discharge liquid droplets; a passage plate to form individual liquid chambers communicating with the respective nozzles; and a wall surface member to form a wall surface of the individual liquid chambers. The passage plate is formed with at least three plate-shaped members stacked and bonded by an adhesive. The nozzle plate and one plate-shaped member, and another plate-shaped member and the wall surface member are bonded, respectively. The three plate-shaped members include separation wall parts forming separation walls between the individual liquid chambers. At least one of the three plate-shaped members has a separation wall width different from that of the others, to have fillets of the forced-out adhesive formed between the wall surfaces, and surfaces of the plate-shaped members, the nozzle plate, or the wall surface member.