B - Operations – Transporting – 41 – J
Patent
B - Operations, Transporting
41
J
197/90
B41J 11/24 (2006.01) B41J 19/96 (2006.01)
Patent
CA 1139252
ABSTRACT A printer having a platen mounted on a platen shaft and a line indexing driving gear includes releasable coupling means selectively coupling the platen shaft and driving gear for printer controlled or manual indexing of the platen. It includes an external clutch member rotatably mounted on the shaft and axially moveable therealong, an internal clutch member fixedly mounted on the shaft outwardly of the external clutch member and having on its inner end an external cone clutch element normally engaged with the internal clutch element and a manual clutch disengaging member mounted for axial movement on the shaft outwardly of the internal clutch member. The external clutch member has on its inner end a driven gear engaging the driving gear throughout the axial movement of the external clutch member and on its outer end an internal serrated cone clutch element, the internal clutch member has axially extending through opening means spaced radially inwardly of the external clutch element, and the clutch disengaging member has on its outer end an actuating knob and on its inner end axially extending actuating means extending through the opening means for axially moving the external clutch member inwardly to disengage the clutch elements for manual rotation of the platen by the knob.
352757
Smart & Biggar
Wang Laboratories Inc.
LandOfFree
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