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Electrophotocopier-line-scanning-illuminator

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Electrophotocopier line scanning illuminator

Details

Inventors: Bosse, Thomas W.;
Assignee: Pitney Bowes Inc. (Stamford, CT)
Primary Examiner: Prescott; A. C.
Assistant Examiner:
Attorney, Agent or Firm: Sklar; Lawrence E., Soltow, Jr.; William D., Scribner; Albert W.

A line scanning, illuminating apparatus for use in an electrophotocopying machine. The apparatus includes a linear source of light, a hyperbolic reflector situated behind the linear light source, and a cylindrical lens located in front of the linear light source. The profile of the reflector is given by the equation: ##EQU1## wherein the x and y axes intersect at the center line of the reflector, and wherein B is a positive quantity on the x axis representing the distance between the center line of the reflector and a virtual image of the light source created behind the reflector, and wherein A is a negative quantity representing the distance between the center line of the reflector and the linear light source located in front of the reflector.

DETAILED DESCRIPTION The instant invention provides a line scanning, illuminating apparatus for use in an electrophotocopying machine.
The apparatus comprises a linear source of light, a hyperbolic reflector situated behind the linear light source, and a cylindrical lens located in front of the linear light source.
The profile of the reflector is given by the equation: ##EQU2## wherein the x and y axes intersect at the center line of the reflector, and wherein B is a positive quantity on the x axis representing the distance between the center line of the reflector and a virtual image of the light source created behind the reflector, and wherein A is a negative quantity representing the distance between the center line of the reflector and the linear light source located in front of the reflector.

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