B - Operations – Transporting – 41 – J
Patent
B - Operations, Transporting
41
J
197/93
B41J 13/036 (2006.01) B41J 13/054 (2006.01) B41J 13/16 (2006.01)
Patent
CA 2018917
The paper pressing arrangement comprises a paper guide plate for guiding a sheet of paper around a platen roller towards the typing line. The paper guide plate comprises two conveyor modules each of which supports three paper pressing rollers and is provided with a pivot element projecting from the barycentre of the triangle joining the midpoints of the three rollers. A control mechanism, in an operative position, transmits by means of a rocker lever pivotally connected to the pivot elements the action of a spring to urge the conveyor modules against the roller. The control mechanism comprises a lever for positioning the two conveyor modules in an inoperative position to permit insertion of the sheet of paper. Each conveyor module defines a first axis for rotation of two front paper pressing rollers and a second axis spaced from the first axis for rotation of a rear roller disposed intermediate each pair front rollers. The paper pressing rollers have a rotary shaft of plastics material and a covering of rubber. Each conveyor module comprises, for each paper pressing roller two depressed seats for accommodating the shaft without force, and a through slot positioned between the two depressed seats. The through slot is of a width which is slightly less than the diameter of the paper pressing roller so that, in mounting, the rubber covering on each roller has to be slightly forced into the slot to permit the ends of the shaft to reach the seats. Each paper pressing roller then remains restrained between the two seats and the respective slot and will be capable of slight axial and radial movements until it is positioned against the platen roller.
Ing. C. Olivetti & C. S.p.a.
Ridout & Maybee Llp
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