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. 19, 2016
Filed:
Dec. 05, 2014
Takeyuki Kobayashi, Kanagawa, JP;
Hiroshi Noda, Kanagawa, JP;
Tomomi Katoh, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
An image forming apparatus includes an apparatus body; a printhead to discharge droplets; a sub tank to hold a liquid to be supplied to the printhead for discharge as droplets; a movable carriage for scanning, including the printhead and the sub tank; a main tank to contain the liquid to be supplied to the sub tank; a liquid supply pump, disposed on the carriage, to supply the liquid from the main tank to the sub tank; a first liquid supply tube that connects the main tank to the liquid supply pump; and a second liquid supply tube that connects the liquid supply pump to the sub tank. A fluid resistance of the first liquid supply tube is greater than a fluid resistance of the second liquid supply tube. The liquid supply pump includes a deformable portion that shrinks and expands in a carriage scanning direction, by scanning movement of the carriage, to take the liquid in and pump the liquid out, and the volume of liquid supplied to the sub tank being greater than the volume of liquid supplied to the main tank when the liquid supply pump supplies the liquid to the sub tank.