Typewriting machines – Sheet or web – For feeding plural record media concurrently or selectively
Patent
1988-09-22
1990-04-03
Eickholt, Eugene H.
Typewriting machines
Sheet or web
For feeding plural record media concurrently or selectively
4006162, 4006362, B41J 1150
Patent
active
049135740
ABSTRACT:
A sheet feeding apparatus in a printer is provided with: feeding rollers for holding and feeding a sheet of paper therebetween; and an operation lever for changing the contact pressure of the feeding rollers by attaching or detaching the feeding roller to or from the opposite feeding roller depending on a type of sheet, e.g., a continuous form transferred by pin tractors or a manually inserted cut sheet. The operation lever also connects or disconnects a clutch mechanism provided between a drive motor and the pin tractors simultaneously with the attaching/detaching operation for the feeding rollers. A single operation of the operation lever can achieve a precise transfer of a selected type of sheet while suspending another type of sheet in the printer. The sheet feeding apparatus is also provided with a transmission mechanism for transmitting a torque between the platen and the feeding rollers by a friction driving force. The transmission mechanism prevents the inertia force of the platen from the rotating the feeding rollers uselessly.
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Brother Kogyo Kabushiki Kaisha
Eickholt Eugene H.
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