BOOK COPYING ON A "CVT" COPIER
Original Publication Date: 1985-Jun-30
Included in the Prior Art Database: 2004-Apr-04
Xerox Disclosure Journal
A "CVT", constant velocity transport, such as that illustrated in Figure 1 is a convenient, relatively inexpensive device for transporting a document over a stationary optical system in an automatic reproducing apparatus. In Figure I, the document 10 is inserted between insert document feed rolls 12 and 14 and transported across the optics platen glass 8 to output document feed rolls 16 and 18 to a receiving tray 24. Figure 2 is a top view illustrating the use of the bottom portion of the TVT" in order to transport a book across the fixed optics platen. In Figure 2, the two upper document feed rolls 12 and 16 lift up and the book is placed on a plastic sheet 20 overlying the document feed path. In essence, the plastic sheet is basically a moving platen that is driven in only one direction. A sprocket 22 is added to each of the input roll 14 and the output document feed rolls 18 which engage sprocket holes in the plastic sheet near one edge. A book is placed upon the plastic sheet against the lead edge of the guide and between the machine edge guides. The book is now ready to be transported across the fixed optics platen 8 and may be manually held in place by the operator if desired. The plastic sheet is driven across the optics platen with the book square with the optics and moving at a constant velocity.