Device for automatically displaying and withdrawing an original positioning scale

Claim 1

Copying apparatus including a transparent original receiving surface (1), a light source (100), and means for exposing a copy sheet to light reflected from an original placed over the transparent original receiving surface (1) and illuminated by the light source placed at the side of said surface (1) opposite the side over which the original is placed, said apparatus also including first means (3 and 4, or B) moving between a first position held while said copy sheet is being exposed to light reflected from the original and a second position held at other times, wherein the improvement comprises an original positioning scale (23), a device for displaying the original positioning scale (23) to assist in proper positioning of the original over the surface (1) and for withdrawing the scale (23) for the duration of the exposure to avoid interference of the scale (23) with the light reflected from the original, said device including means (24, 26, 26a, 26b, 27, A) for supporting the scale (23) at the side of the original receiving surface (1) opposite the side over which the original is placed, means (36, 32a, 32, 34, 30, 29, 29a, 31, 25 or 39a, 40, 40a) connecting the first means (3 and 4 or B) and the support means for holding the support means (24, 26, 26a, 26b, 27, A), at the time the first means is in its second position, at a first position at which the scale (23) is adjacent to the transparent original receive surface (1) and visible therethrough from the side of the original.

Claim 4

A device for automatically displaying and withdrawing an original positioning scale for copying apparatus of the type having a transparent original positioning scale with an inner side and an outer side and in which reflected light is used for exposing copy sheets to an image of an original placed on the outer side and which includes an actuating member actuated in association with an exposing operation, means for mounting said original positioning scale at one end edge of the transparent original receiving surface on the inner side thereof, a support rod rotatably disposed along said one end edge of said original receiving surface for supporting said scale to operate as a unit, an arm affixed to said support rod, and drive means for operating said arm in conjunction with the operation of an actuating member actuated in association with an exposing operation to display said scale on said original receiving surface when an original is to be placed on the original receiving surface and to withdraw the scale to a position in which it is moved away from the original receiving surface at the time of exposure.

Claim 5

A device for automatically displaying and withdrawing an original positioning scale for copying apparatus of the type having a transparent original positioning scale with an inner side and an outer side and in which reflected light is used for exposing copy sheets to an image of an original placed on the outer side and which includes an actuating member actuated in association with an exposing operation, means for mounting said original positioning scale at one end edge of the transparent original receiving surface on the inner side thereof, a support rod rotatably disposed along said one end edge of said original receiving surface for supporting said scale to operate as a unit, an arm affixed to said support rod, and drive means for operating said arm in conjunction with the operation of an actuating member actuated in association with an exposing operation to display said scale on said original receiving surface when an original is to be placed on the original receiving surface and to withdraw the scale to a position in which it is moved away from the original receiving surface at the time of exposure.