B - Operations – Transporting – 41 – F
Patent
B - Operations, Transporting
41
F
270/147
B41F 21/04 (2006.01) B41J 13/22 (2006.01)
Patent
CA 1305503
ABSTRACT OF THE DISCLOSURE A paper clamping mechanism for clamping a sheet of printing paper on a drum-shaped platen of a printer is disclosed. The mechanism comprises a clamp member radially slidably mounted at its legs to the end surfaces of the platen, and a lever pivotted to the frame of the printer. The clamp member comprises a pressor which opposes an axial recess on the peripheral surface of the platen; the front end portion of a sheet of paper is held between the pressor and the recess during the printing operation, the clamp member being urged toward the axis of the platen by a spring. The clamp member further comprises an axially extending pin formed on a leg thereof. The lever is urged by a spring to a position at which it is stopped by a pin formed on the frame of the printer. An arm of the lever comes into contact with the pin on the leg of the clamp member when the clamp member is rotated with the platen. When the arm of the lever comes into contact with the pin on the clamp member rotated in the printing direction, the lever turns and yields upon contact; when, on the other hand, the arm comes into contact with the pin on the clamp member rotated in the reverse direction, the pin slides on the arm of the lever which is stopped by the stopper pin, so that the clamp member is raised from the platen to form a gap between the pressor and the recess on the platen.
597904
Kobayashi Yousuke
Tohi Toshiaki
Kobayashi Yousuke
Marks & Clerk
Mitsubishi Denki Kabushiki Kaisha
Tohi Toshiaki
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