Abstract: A mechanism for holding a master or printing plate on a cylinder of a duplicating or printing machine. An elongated housing, including an anvil, extends transversely across the periphery of the cylinder. A die plate extends along the housing above the anvil and defines a gap between the die plate and the anvil for receiving an edge of the master. The die plate has a series of holes spaced therealong. A pin bar extends along the housing below the anvil for moving pins into the holes in the die plate. An actuator mechanism, including pivot pins and link arms, is operatively associated between the housing and the die plate and between the housing and the pin bar for conjointly moving the die plate toward the anvil to close the gap and moving the pins through the master and into the holes in the die plate to hold the master. The pins have sharpened ends for piercing masters that are not provided with pre-punched perforations.

Abstract: A cassette and heating arrangement for a photocopy machine having a transport system including an in-feed roller with conventional components for acting upon a sheet to produce a developed image during transport of the sheet from an entry way to a discharge slot. A copy sheet cassette is provided including a shallow rectangular tray for a stack of copy sheets having a cover hinged at the rear end of the tray to extend over the top of the tray but foreshortened to leave the front portion of the tray uncovered. The housing of the machine has a receptacle at the entry way for plugging in the cassette with the front portion of the cassette being totally accommodated within the housing and with the front portion of the stack of sheets carried by the cassette in engagement with the in-feed roller.