REPRODUCING APPARAT OPTIC SCANNING MODULE
Original Publication Date: 1985-Aug-31
Included in the Prior Art Database: 2004-Apr-04
Xerox Disclosure Journal
The figures illustrate three positions of an optical scanning module which may be used in a copier apparatus. In the figures, a document is placed on a transparent viewing platen 26 and a photoconductive belt 10 is arranged below the viewing platen to move in a recirculating path completing two cycles for each copy produced. The optical scanning module 36 is positioned between the viewing platen and the photoconductive belt and includes a source 32 to illuminate a document on the platen to be reproduced,means 34 to focus a light image of the document onto a charged portion of the photoconductive belt, a corona generating device 42 for use in both charging the photoconductive belt prior to imaging and subsequently to electrostatically transfer the charged toner particles in the developed image on the photoconductive belt to the copy sheet 66. The scanning module also includes, copy sheet registration rolls 36 with the focusing means, the corona generating device and the registration rol Is being arranged in that order in the module in the scanning direction. A copy sheet feeder 50 is provided at the end of scan position which is actuated to feed a copy sheet to the registration rolls in the optical scanning module when i t is at the end of scan position to enable the registration rolls to capture at least the lead edge of the copy sheet as illustrated in the second figure. The optical scanning module is then returned to the start of scan position together with a copy sheet and the copy sheet registration rolls may then feed the lead edge of the copy sheet in the optical module in timed relation and into contact with the lead edge of the toner image on the photoconductive belt to transfer the toner image from the belt to the copy sheet by means of the combined charge/transfer corona generating device as indicated in Figure 3.