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US 6,203,295 B1Granted
Ink-jet recording device and pump used therein
AssigneeSeiko Epson Corporation
InventorAtsushi Nishioka
Life of this patent
Estimating the term…
Abstract
A pump 15 disposed in an ink-jet recording device has flexible tube 103 and guide member 106 whereon a prescribed part of the tube is mounted. Roller 105, of which there is at least one and which pressurizes and deforms tube 103, is supported by lever 107 such that it pressurizes the tube when it rotates in the forward direction and releases the pressure on the tube when it rotates in the reverse direction. This lever 107 is urged by spring 108 in the direction that presses the roller against the tube.
Claims16
A pumping apparatus comprising:
- a casing defining an internal guide surface;
- a rotor rotatively mounted in said casing;
- a tube partially disposed on said guide surface;
- a roller for sequentially pressurizing and deforming said tube on said guide surface;
- a lever pivotally mounted on said rotor and having a roller support for supporting said roller, said roller support allowing said roller to shift relative to said lever between a first position where said roller closes said tube and a second position where said roller opens said tube;
- and
- a spring for biasing said lever toward said guide surface.
4 more elements
An ink-jet recording apparatus comprising:
- a nozzle for ejecting ink droplets;
- and
- a pump provided in an ink supply path leading to said nozzle or a discharge path leading from said nozzle, said pump comprising;
- a casing defining an internal guide surface;
- a rotor rotatively mounted in said casing;
- a tube partially disposed on said guide surface;
- a roller for sequentially pressurizing and deforming said tube on said guide surface;
- a lever pivotally mounted on said rotor and having a roller support for supporting said roller, said roller support allowing said roller to shift relative to said lever between a first position where said roller closes said tube and a second position where said roller opens said tube;
- and
- a spring for biasing said lever toward said guide surface.
7 more elements
Dependencies are inferred from the claim text.