Tube pump, discharge recovering apparatus and ink jet...

Incremental printing of symbolic information – Ink jet – Ejector mechanism

Reexamination Certificate

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C347S030000, C417S477700

Reexamination Certificate

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07011387

ABSTRACT:
An ink jet recording apparatus includes a tube pump for generating negative pressure in a tube, the tube pump being provided with a tube disposed along an arcuate guide portion, a pressing roller for squeezing the tube, a rotary member to which the pressing roller is rotatably journalled, and a supporting member to which the rotary member is rotatably journalled. The tube, the pressing roller, the rotary member and the rotary member supporting member are assembled to thereby form a pump unit, and are separable from the guide portion in the state of the pump unit. Thereby, the incorporation of the tube becomes easy, and the erroneous incorporation of the tube in its buckled state or its twisted state can be eliminated easily.

REFERENCES:
patent: 6082977 (2000-07-01), Nishioka
patent: 6612682 (2003-09-01), Saito
patent: 6629749 (2003-10-01), Miyauchi et al.
patent: 6641249 (2003-11-01), Miyauchi
patent: 6712447 (2004-03-01), Saito
patent: 6722757 (2004-04-01), Saito
patent: 1176179 (1998-03-01), None
patent: 2002/36603 (2002-02-01), None

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