Patent ID: 6463853
Filing Date: 2002-10-15
Classification: B41F,B41P

Abstract:
A plate exchanging apparatus in a rotary printing press comprising:first control means for executing a full-automatic plate exchanging mode to automatically remove an old plate from a plate cylinder and to automatically set a new plate on said plate cylinder using a plate holding means; second control means for executing a semi-automatic plate exchanging mode to remove the old plate from said plate cylinder by a combination of automatic and manual operations and to set the new plate on said plate cylinder by a combination of automatic and manual operations; and wherein said second control means removes the old plate from said plate cylinder by rotating said plate cylinder in a plate removal direction in the state that the old plate wound around a circumferential surface of said plate cylinder is held by an operator, at least one end of the old plate being released from a plate fixing unit, and subsequently executing said semiautomatic plate exchanging mode to mount the new plate on said plate cylinder by a combination of automatic and manual operations.