Dainippon Screen Mfg. Co., Ltd.

Ryuzo Tokimasa

Toru Kawada

Toshio Tamura

Susumu Takahashi

Shiro Kitawaki

Hiroshi Miyoshi

Junichi Nagamine

Daisuke Yoneda

A plate feeding apparatus of this invention includes a storage unitfor storing a plurality of plates P with end edges thereof arranged even by a stopper, a first and a second nip rollersand, a suction devicedisposed at a distal end of an armswingable about a moving unitfor sucking and holding an upper surface adjacent an end edge of each plate, a moving mechanism for moving the moving unitalong the surfaces of the plates, and for swinging the armabout the moving unit, thereby to invert a portion adjacent the end edge of each plate sucked and held by the suction device, and subsequently to move the portion to a position to be pinched by the first nip roller or second nip roller, and a storage unit moving mechanismfor moving the storage unitin directions perpendicular to the axes of the first and second nip rollersand

Plate feeding apparatus

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 pinsi.e., on a hole punch unitside, the upper roller of a conveyor rollermoves down, and conveyor rollersandand conveyor beltsall start rotating in the positive direction. Once the plate P moves out of the range covered by a sensor PHthe movable pinsfollow the tail end of the plate P at a given distance therefrom. When the front end of the plate P reaches the hole punch unitthe movable pinswhich have been chasing the plate P push the tail end thereof to make the front end thereof abut to the hole punch unitAt the same time, based on the movement amount of the movable pinsfrom 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 pinson the recording drumis carried out in a similar manner.

Drum surface scanner and method for plate size check

An image recording apparatus for recording an image on a sensitive material mounted on a drum by emitting light beams to the sensitive material. The apparatus includes a cylindrical drum for supporting the sensitive material mounted peripherally thereof, a drive mechanism for rotating the drum with a rotary shaft disposed on an axis of the drum, guide members formed in opposite end surfaces of the drum and extending circumferentially about the rotary shaft, a pair of counterweights movable along each of the guide members, a moving mechanism for engaging each of the counterweights and moving relative to the drum, thereby to move the counterweight along the guide member, and a fixing mechanism for fixing the counterweight to the guide member in time of image recording.

Image recording apparatus with drum balancing

Growing community of inventors

Kyoto, Japan

Ryuzo Tokimasa