Method for cutting paper in a printer using a gear with a fricti

Details Method for cutting paper in a printer using a gear with a fricti Method for cutting paper in a printer using a gear with a fricti

1998-10-13

1999-10-26

Yan, Ren

Typewriting machines

Sheet or web

For feeding web record-medium

83 13, 83603, B41J 1170

Patent

active

059716401

ABSTRACT:
A gear drive system for a printer designed to print upon a continuous roll of paper and having a blade used to cut off printed portions of paper from the paper roll is implemented. The gear drive system has a drive gear which slips against a toothless portion of a driven gear while paper is being fed through the printer for printing by a print head. When printing stops, the drive gear reverses its rotation, causing the driven gear to engage the drive gear. A cutter blade is controlled by the driven gear, with the blade cutting off the paper as the drive gear is in reverse rotation. After the paper is cut, the drive gear resumes its forward rotation, rotating the blade away from the paper. After the blade has been rotated, the drive gear continues to turn, but slips on the toothless portion of the driven gear. Friction losses are minimized as the energy lost as friction is low and full torque is applied to both cutting and opening rotations of the cutter blade.

REFERENCES:
patent: 3911757 (1975-10-01), Rix et al.
patent: 4347919 (1982-09-01), Maeda
patent: 4541468 (1985-09-01), Anderson
patent: 4544293 (1985-10-01), Cranston et al.
patent: 4810110 (1989-03-01), Myers
"Drive Clutch", IBM Technical Disclosure Bulletin, vol. 26 No. 9, Feb. 1984, pp. 4573-4574.

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