Plate holding apparatus

Abstract

A plate holding apparatus includes a plate holding device and an air cylinder. The plate holding device holds an old plate discharged from a plate cylinder. The air cylinder moves the plate holding device between the first position of holding the discharged old plate and the second position away from the plate cylinder. The plate holding device includes a support member, first and second rotary members, a lever, stopper, and tensile coil spring, and a one-way clutch. The first rotary member is rotatably, axially supported by the support member. The second rotary member is axially supported by the support member to be movable and rotatable. The lever, stopper, and tensile coil spring move the second rotary member to come into contact with and separate from the first rotary member. When the old plate is held by the first and second rotary members, the one-way clutch allows at least one of the first and second rotary members to rotate in the first direction to disengage the old plate from the plate cylinder, and regulates it from rotating in the second direction opposite to the first direction.

Dependencies are inferred from the claim text.