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ILLUMINATOR FOR INTERDOCUMENT AND REDUCTION ERASE

IP.com Disclosure Number: IPCOM000024819D
Original Publication Date: 1982-Apr-30
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 70K

Publishing Venue

Xerox Disclosure Journal

Abstract

Figures 1 and 2 show a schematic view of the process station in a copy cycle. A photoreceptor drum acquires a charge upon its surface at station 10 with imaging taking place at station 12. Lamp 14, shown in detail in Figure 2, comprises a pair of tungsten lamps 16, 17 at opposing ends of a diffusely reflective cavity 18. Light from the cavity emerges through aperture 20. A specularly reflective disk 22 is arranged within the cavity and adjustably mounted so as to slide along the axis of the cavity maintaining optical isolation between the two compartments thus formed.

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Page 1 of 2

XEROX *DISCLOSURE JOURNAL

ILLUMINATOR FOR INTERDOCUMENT AND REDUCTION ERASE
Dominick J. Maiorano

Proposed Classification
U.S. C1. 355/8
Int. C1. G03g 15/28

FIG. I

107 Volume 7 Number 2 March/April 1982

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Page 2 of 2

ILLUMINATOR FOR INTERDOCUMENT AND REDUCTION ERASE (Cont'd)

Figures 1 and 2 show a schematic view of the process station in a copy cycle. A photoreceptor drum acquires a charge upon its surface at station 10 with imaging taking place at station 12. Lamp 14, shown in detail in Figure 2, comprises a pair of tungsten lamps 16, 17 at opposing ends of a diffusely reflective cavity 18. Light from the cavity emerges through aperture 20. A specularly reflective disk 22 is arranged within the cavity and adjustably mounted so as to slide along the axis of the cavity maintaining optical isolation between the two compartments thus formed.

Lamp 14 is thus capable of two functions. With disc 22 mounted at one end of the cavity, an interdocument erase function is implemented when both lamps are on. In a reduction mode, a reduced image formed on the drum 10 would leave a portion of unexposed photoreceptor. Disc 22 is moved to the appropriate position and selectively energized so as to discharge only the unexposed portion.

108

  XEROX DISCLOSURE JOURNAL Volume 7 Number 2 MarchIApril 1982

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