Xerographic reproducing apparatus

Claim 2

Apparatus for scanning a document and projecting various size images of the document onto a moving image receiving surface including support means for maintaining a document in a stationary position, lighting means for illuminating a document on said support means, a movable member having an image receiving surface supported in an optical path emanating from an illuminated document positioned on said support means and terminating at said image receiving surface, a scanning mirror positioned to sweep an optical image of a document positioned on said support means across said image receiving surface to form a facsimile image of the document on said image receiving surface, a lens interposed in said optical path to project various size images of a document to said image receiving surface, drive means operatively connected between said scanning mirror and said movable member having an image receiving surface to form a driving connection therebetween for sweeping an optical image of a document positioned on said support means across said image receiving surface, and control means positioned between said scanning mirror and said image receiving surface operatively connected to said drive means for selectively varying the speed at which said optical image is swept across said image receiving surface to vary the size of the image projected thereto, in accordance with the size of the image projected by said lens to thereby produce an undistorted facsimile of said document.

Claim 3

Apparatus for scanning a document and projecting various size images of the document onto a moving photoreceptive surface including support means for maintaining a document in a stationary position, lighting means for illuminating a document on said support means, a movable member having a photoreceptive surface for selectively retaining distributed electrical charges thereon supported in optical path emanating from an illuminated document positioned on said support means and terminating at said photoreceptive surface, an oscillable scanning mirror positioned to sweep an optical image of an illuminated document on said support means onto said photoreceptive surface to form an electrical charge facsimile image of the document on said photoreceptive surface, a lens interposed in said optical path to project various size images of a document to said photoreceptive surface, drive means for oscillating said scanning mirror operatively connected between said scanning mirror and said movable member having a photoreceptive surface to form a driving connection therebetween for sweeping an optical image of a document positioned on said support means across said photoreceptive surface, and selectively variable control means positioned between said scanning mirror and said photoreceptive surface operatively connected to said drive means for controlling the oscillation speed of said scanning mirror at a rate determined by the size of the image to be projected onto said photoreceptive surface for creating an undistorted facsimile of the document thereon

Claim 4

Apparatus for scanning a document and projecting various size images of the document onto a moving photoreceptive surface including support means for maintaining a document in a stationary position, lighting means for illuminating a document on said support means, a movable member having a photoreceptive surface for selectively retaining distributed electrical charges thereon supported in optical path emanating from an illuminated document positioned on said support means and terminating at said photoreceptive surface, an oscillable scanning mirror positioned to sweep an optical image of an illuminated document on said support means onto said photoreceptive surface to form an electrical charge facsimile image of the document on said photoreceptive surface, a lens interposed in said optical path to project various size images of a document to said photoreceptive surface, drive means for oscillating said scanning mirror operatively connected between said scanning mirror and said movable member having a photoreceptive surface to form a driving connection therebetween for sweeping an optical image of a document positioned on said support means across said photoreceptive surface, and selectively variable control means positioned between said scanning mirror and said photoreceptive surface operatively connected to said drive means for controlling the oscillation speed of said scanning mirror at a rate determined by the size of the image to be projected onto said photoreceptive surface for creating an undistorted facsimile of the document thereon

Claim 5

The apparatus of claim 2 wherein said drive means includes a plurality of drive members operatively connected to said scanning mirror and said movable photoreceptive member selectively actuable to vary the oscillation speed of said scanning mirror in relation to the movement of said photoreceptive member to effect a variable sped scanning of an illuminated document on said support means.

Claim 6

The apparatus of claim 3 wherein each of said plurality of drive members is secured to one of a plurality of diverse radii concentric sectors operatively connected to said oscillable scanning mirror to effect a variation in the speed and length of the oscillation arc as defined by the radius of said sectors.

Claim 7

The apparatus of claim 3 wherein said control means includes a lever arm selectively actuable to engage one of said plurality of drive members to effect a variation in the speed and length of the oscillation arc of said scanning mirror.

Claim 8

The apparatus of claim 5 wherein said lever arm includes a rotatable bearing supported from one end of said lever arm and positioned to selectively engage each of said plurality of drive members to effect a driving connection between said oscillable scanning mirror and said moving photoreceptive surface.

Claim 9

The apparatus of claim 5 including means for limiting the movement of said lever arm between predetermined physically discrete positions.

Claim 10

The apparatus of claim 7 wherein said means for limiting the movement of said lever arm is adjustable to vary the limits of the physically discrete positions.

Claim 11

The apparatus of claim 7 wherein said physically discrete positions each define the start of scan position for said oscillable scanning mirror.