Drum surface scanner and method for plate size check

Details Drum surface scanner and method for plate size check Drum surface scanner and method for plate size check

2007-07-03

2007-07-03

Moe, Aung S. (Department: 2625)

Facsimile and static presentation processing

Facsimile

Picture signal generator

C358S400000, C271S037000, C250S234000, C359S197100

Reexamination Certificate

active

10140954

ABSTRACT:
Provided is a drum surface scanner with which punched holes and/or cuts can be formed in a plate which has been correctly defined by position, and the plate can be clamped to a recording drum. When a plate P comes in front of movable pins113,i.e., on a hole punch unit4side, the upper roller of a conveyor roller125moves down, and conveyor rollers124and125,and conveyor belts111all start rotating in the positive direction. Once the plate P moves out of the range covered by a sensor PH159,the movable pins113follow the tail end of the plate P at a given distance therefrom. When the front end of the plate P reaches the hole punch unit4,the movable pins113which have been chasing the plate P push the tail end thereof to make the front end thereof abut to the hole punch unit4.At the same time, based on the movement amount of the movable pins113from their original positions to current positions pushing the tail end of the plate P, the plate P is checked for its length Y. Plate conveyance with respect to positioning pins51on the recording drum5is carried out in a similar manner.

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