Abstract: A copying machine with an exposure carriage adapted for reciprocating movement along the top wall of the machine and to receive an object from which a copy is intended to be made wherein this exposure carriage comprises an angle-shaped rail member overlying one of the upper longitudinal edges of the machine and extending into the machine in engagement with reciprocating motive means within the machine, the carriage rail holding by a releasable clamping engagement a glass plate in a position overlying the top wall of the machine and adapted to support a copying object, as well as a hinge member in which is mounted an elastic pressure mat forming a cover for the glass plate. The pressure mat together with the hinge member may be pulled out of the carriage rail for providing an unimpeded access to the glass plate copying area, or may be locked in the carriage rail by e.g. a top mounted stop ledge.

Abstract: An electrophotographic copying machine with an improved means of cleaning the transfer drum to remove residual pigment uses a cleaning web and just a single driven pressure roller over which the web passes and which is arranged to press the web against the drum surface. The pressure roller constitutes the only movable element for guidance of the web. Preferably, the web is stored folded in concertina fashion in one chamber of a disposable cassette and the used web is returned to another chamber of the cassette. The invention obviates the need for any rotatable supply and take-up rollers for the cleaning web.There is also provided mechanism for reliably indicating the amount of unused web remaining at any time.