Browse Prior Art Database

Original Publication Date: 1977-Aug-31
Included in the Prior Art Database: 2004-Mar-30

Publishing Venue

Xerox Disclosure Journal


An electrophotographic printing machine employing a slide pro-jector may have the slides thereof automatically collated so as to produce ordered sets of copies therefrom-. In operation, the machine operator dials the number of copies, i.e., the number of sets to be reproduced and the number of originals being reproduced. For example, if five transparencies are to be reproduced as five ordered sets of copies, the five trans-parencies will be initially placed in compartment 16 of cylindrical member 14. The operator will set the number of copies 110 at five and the number of originals 108 at five. The operator will then depress print button 112. Thereafter, the control logic 104 activates the projector to project successive light images of each color transparency. The fore-going is repeated for five cycles so that five sets of copies are produced. These sets of copies are in an ordered se-quence. Cylindrical member 14 acts as a storage container for the various slides. Control logic 104 regulates the actuation of indexing motor 106 so as to rotate cylindrical member 14 at the appropriate time. For example, if the slide in compart-ment l6a is initially being reproduced, indexing motor 106 will be actuated by control logic 104 to advance compartment l6b into operative communication with the projection system of the slide projector after the first copy of the slide in compartment 16a has been obtained. Similarly, after the first copy of the slide in compartment in l6b has been obtained,