US 8,262,089 B1Granted

Depinching mechanism for paper jam removal in printer

AssigneesCal-Comp Precision (Singapore) Limited, Cal-Comp Electronics & Communications Company Limited

InventorsChow-Jin Chng, Foo-Yin Theng, Cher-Lek Toh

Life of this patent

Estimating the term…

Loading patent…

Abstract

A depinching mechanism including a frame, a star wheel assembly, a transmitting device and a sensor is provided in present invention. Through the transmitting device rotating reversely, the star wheel assembly is lifted to the second position when paper jam occurs, thus depinched the media so that user can clear the paper jam. After that the star wheel assembly is lowered to the first position again. The star wheel assembly remains in the first position in normal printing process. Using a one-way clutch and a cam with an outer predetermined profile, the transmitting device rotates forwardly without transmitting any torque during normal printing process, and rotates inversely with transmitting a torque to lift the star wheel assembly up and lower the star wheel assembly down when paper jam occurs. Thus, the depinching mechanism can be used in printers to auto fix the paper jamming problems.

Claims8

Dependent claims

A depinching mechanism, for paper jam removal in printer, comprising:

a frame;
a star wheel assembly, located upon the frame;
a transmitting device, disposed on the frame and located below the star wheel assembly, comprising:
a shaft, rotatably fixed to the frame;
a clutch, fixed and sleeving to the shaft;
a rotating element, coupled to the clutch;
a cam, located between the frame and the rotating element, wherein the shaft is coupled to the cam;
and
a plunger, movably disposed on the frame and located between the cam and the star wheel assembly with one end freely attached to the cam and another end freely attached to the star wheel assembly;
and
a sensor, disposed on the frame and located between the star wheel assembly and the transmitting device;
wherein the star wheel assembly is lifted to a second position and lowered to a first position when the transmitting device is in a working status, and the star wheel assembly remains in the first position when the transmitting device is in an idle status.

9 more elements

Dependencies are inferred from the claim text.