Title:
TUBE PUMP AND INK-JET RECORDING APPARATUS USING THE SAME
Document Type and Number:
Japanese Patent JP3664213
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a tube pump without causing counter flow at the time of reversing the rotation direction of the pump.
SOLUTION: A tube T1 is disposed in a pump frame 32, with a roller 42 mounted on a lever 41 displaceable between a first position for pressing the tube, and a second position for releasing the press on the tube. A spring clutch comprising a coil-like spring 50 is provided on the supporting shaft 33 of a pump wheel 41 with the lever 41 mounted thereon. In the case the rotation direction of a cam member 45 is reversed, the roller 42 is moved to the first position or the second position so that the rotation force is transmitted to the pump wheel 41 subsequently. At the same time, the sprint clutch comprising the coil-like spring 50 is opened. Accordingly, counter flow effect of the pump at the time of the reverse drive of the pump can be prevented.
Inventors:
Toshio Kumagai
Application Number:
JP23472498A
Publication Date:
June 22, 2005
Filing Date:
August 20, 1998
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
B41J2/165; B41J2/175; B41J2/18; B41J2/185; F04C5/00; (IPC1-7): B41J2/18; B41J2/185; F04C5/00
Domestic Patent References:
| JP6143613A | ||||
| JP5069558A | ||||
| JP59074387A |
Attorney, Agent or Firm:
Hiroki Ishii
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