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. 02, 2003
Filed:
Sep. 06, 2001
Keiji Takahashi, Tokyo, JP;
Tetsuji Kurata, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An ink supply recovery system comprises a pack body including a main tank and a waste ink receptacle. The pack body is detachably mounted on a printer body. The printer body includes a sub-tank mounted on a carriage, a cap for capping ink ejection openings of a printing head, and a cylinder pump. The pump has a reciprocally movable piston, a cylinder body having air and ink suction chambers, defined on opposite sides of the piston, respectively connectable with a negative pressure introducing portion of the sub-tank, the cap via an input port and the waste ink receptacle via an output port, and a port switching mechanism which switches the input and output ports open and close associating with movement of the piston. Movement of the piston of the cylinder pump is controlled at a predetermined timing.