Printing plate mounting and proofing apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 19, 1991
Grant Date -
N/A
app pub date -
Dec 27, 1989
filing date -
Dec 27, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for mounting flexible printing plates on a printing cylinder includes a base rotatably supporting a printing cylinder in a predetermined position and an adjacent support table having a turntable for supporting a flexible printing plate having a reference point thereon. Actuators move the support table along three orthogonal axes one of which is parallel to the longitudinal axis of the printing cylinder. The position of the reference point is sensed by a video camera and feedback signals representing the positions of the camera and the table with respect to the three axes are inputs to a computer. The computer determines the positional relationship between the reference point on the printing plate and the predetermined position of the printing cylinder and moves the support table and the turntable to position the printing plate at a desired position for mounting on the printing cylinder. A plurality of grooves formed in the turntable are selectively connected to a vacuum source to retain the printing plate. The printing cylinder is rotated by a drive motor through an anti-backlash gearbox.
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