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:
Sep. 25, 2012
Filed:
Feb. 22, 2010
Tomomi Katoh, Ebina, JP;
Kazuo Haida, Yokohama, JP;
Tomomi Katoh, Ebina, JP;
Kazuo Haida, Yokohama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus includes a recording head having nozzles for ejecting droplets, a liquid tank that stores liquid to be supplied to the recording head, a first channel member connected to the recording head, a second channel member connected to the liquid tank, a pressure regulation valve including an internal channel that connects the first channel member to the second channel member, a third channel member connecting the pressure regulation valve to one of the second channel member and the liquid tank, and a liquid feed unit disposed on the third channel member to feed the liquid. The pressure regulation valve changes a fluid resistance of the internal channel of the pressure regulation valve in response to a flow amount of the liquid passing through the first channel member and, as liquid droplets are ejected from the nozzles, the liquid feed unit feeds the liquid from the liquid tank to the recording head with the recording head in communication with the liquid tank via the pressure regulation valve.