Agfa Corporation

Thomas P Marincic

William W Tice

Aron M Mirmelshteyn

Dennis W Dodge

Thomas E Robinson

Christopher Evans

Joseph Lyons

David B Larsen

Joseph R Lyons, Jr

Roger L Audet

Phillip A Rombult

James D Roberge

Matthew T Kowalczyk

Aaron Mirmelshteyn

A plate cassette loader for a platesetter comprises a cassette holder for receiving a cassette, containing a stack of plates. A cassette inverter then rotates this cassette to a feed position in which the plates can be fed into the imaging engine of the platesetter. In this way, the somewhat unwieldy process of loading plates into the imaging engine is handled by the cassette inverter, in combination with the fact that the stack of plates, contained in the cassette, can be loaded in one step, rather than requiring the feeding of individual plates by a dedicated operator.

Plate cassette loader for platesetter

An apparatus and method for supporting and feeding printing plates in an imaging system. The apparatus includes a vacuum system for picking up an edge of a top printing plate from a stack of printing plates, and a peeling system including a pair of rotatable belts, a plurality of plate feed beams attached to, and extending between, the pair of rotatable belts, and a drive system for rotating the pair of rotatable belts to displace the plurality of plate feed beams between the top printing plate and an underlying printing plate in the stack of printing plates, thereby peeling the top printing plate from the stack of printing plates.

Apparatus and method for peeling a printing plate from a stack of plates

An apparatus and method for picking a single printing plate from a stack of printing plates. The apparatus includes a plurality of suction cups, a peeler, a drive system for displacing the suction cups and the peeler against the surface of the top printing plate on the stack, a vacuum source for supplying a vacuum to the suction cups to secure the suction cups against the surface of the top printing plate, and a system for rotatably displacing the suction cups relative to the peeler to peel a portion of the top printing plate off of the stack. The center line of rotation of the displacing system is located at a contact point between the peeler and the surface of the top printing plate. This prevents any relative motion of the top printing plate against the next, underlying printing plate on the stack during the peeling operation.

Apparatus and method for picking a single printing plate from a stack of printing plates

A center justified pin registration system uses a plurality of pairs of registration pins having different thickness heads to align an edge of a printing plate when mounting the plate to a drum of an imaging system. The registration pins are optionally adjustable. The registration system avoids the requirement to punch holes or notches in a printing plate and does not require adjusting the thickness of a common registration pin. The registration system allows printing plates having different widths to be mounted without necessitating adjustments of the registration pins. An alternate embodiment employs a plurality of pairs of registration pins having uniform thickness heads.

Pin registration system for mounting different width printing plates

A vacuum system is provided including a vacuum source and plurality of suction cups coupled to the vacuum source, wherein at least one of the suction cups is coupled to the vacuum source using a non-constricted fitting, and wherein at least one of the suction cups is coupled to vacuum source using a fixed orifice fitting. The vacuum system is configured to pick a top printing plate from the stack of printing plates, such that each suction cup coupled to the vacuum source using a non-constricted fitting is configured to always engage the top printing plate.

Apparatus and method for picking printing plates of various sizes

A media handling system is provided for an imaging system, such as an external drum platesetter. An edge clamp used to secure a printing plate onto a cylindrical media support surface of the external drum is movable about the drum surface to accommodate the use of different size plates. The edge clamp includes a clamping bar which is radially movable with respect to the media support surface to attach to the media support surface and capture an edge of the printing plate by employing vacuum hold down force.

Media clamp for external drum imaging system

A pin registration system uses a plurality of registration pins having different thickness heads to align an edge of a printing plate when mounting the plate to a drum of an imaging system. The registration pins are optionally adjustable along the longitudinal axis of the drum. The registration system avoids the requirement to punch holes or notches in a printing plate and does not require adjusting the thickness of a common registration pin. The registration system allows printing plates having different widths to be mounted without necessitating adjustments of the registration pins.

The present invention provides a media handling system for an imaging system, such as an external drum platesetter. Separate input and output trays are provided, thereby allowing pre-staging of a second printing plate while a first printing plate is being imaged. The input tray is positioned over the output tray to reduce the floor space (i.e., footprint) of the imaging system.

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Tyngsboro, MA, United States of America

Thomas P Marincic