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ILLUMINATION SLIT FOR A REPRODUCING MACHINE

IP.com Disclosure Number: IPCOM000023430D
Original Publication Date: 1977-Oct-31
Included in the Prior Art Database: 2004-Mar-30

Publishing Venue

Xerox Disclosure Journal

Abstract

An improved exposure slit system 1 for controlling the pro-jected image illumination of an optical system of a repro-ducing machine, The optical system is arranged to strip-wise view an original. The exposure slit system 1 includes one illumination slit member 2 arranged along the optical ray path near the object plane, for example, just below the platen 3 of a copier as in Figure 1. A second illumination slit member 4 is arranged along the optical ray path near the image plane, for example, just above a photosensitive surface 5 as shown in Figure 2, The exposure slit profile for controlling illumi=- nation at the image plane in one mode of operation is com-prised in part by a portion of the profile of the exposure slit member 4 at the image plane and in part by a portion of the profile of the exposure slit member 2 near the object plane as projected at the image planes