B - Operations – Transporting – 41 – F
Patent
B - Operations, Transporting
41
F
101/104
B41F 31/26 (2006.01) B41K 1/42 (2006.01) B41L 27/28 (2006.01)
Patent
CA 1158476
1088 INKING UNIT ATTACHMENT FOR LITHOGRAPHIC PRINTING MACHINES ABSTRACT OF THE DISCLOSURE An inking-unit attachment for a printing press includes a fountain roller, a ductor roller for rocking movement between the fountain roller and a receiver rolled, an idler roller in the nip between the receiver roller and an oscillator roller, and a pair of form rollers for trans- ferring ink from the oscillator roller to the plate cylinder of the printing press. The receiver and oscillator rollers rotate at different peripheral speeds to provide a skidding action between one or both of such rollers and the idler roller to provide an even distribution and an increased quantity of ink to the oscillator roller. A three-function cam serves to reciprocate the oscillator roller in an axial direction, rock the ductor roller between positions in engagement with the fountain and receiver rollers respec- tively, and intermittently to drive the fountain roller. The form rollers are movable between a position in the nip between the oscillator roller and plate cylinder, a position spaced from the plate cylinder and engaged with the oscil- lator roller, and a lift position spaced from both the plate cylinder and oscillator roller. The inking-unit attachment is adapted to be releasably hung on the frame of the print- ing press, and to be driven from the plate-cylinder gear on the printing press through a shaft affixed to the plate- cylinder frame, where the shaft has an overload clutch to guard personnel from injury and the unit from damage. The form roller has positioning and adjusting means to permit its spacing with respect to the plate cylinder, indepen- 1088 dently of the attitude and position of the inking unit. The construction of the unit permits the isolation of the ink- carrying members and mechanism requiring lubrication, where- by contamination of the ink is minimized; the structural integrity of the unit minimizes ink spatter and misting on nearby objects. Access covers protect the ink from con- tamination from exterior sources and from exposure to in- cident radiation, and decrease the exposure of operating personnel to the hazard of moving parts.
402002
Bangor Punta Corporation
Gowling Lafleur Henderson Llp
LandOfFree
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