Copying apparatus

A copying apparatus comprising:

• an original holder having a holding surface for supporting a thick original for exposure;
• sheet original transport means having at least two pairs of rollers, said apparatus further comprising an exposure station disposed between said pairs of rollers and provided independently from said original holder at a position contiguous thereto, said original holder and said sheet original transport means being integrally connected, wherein a sheet original is scanned while being fed by said transport means past said exposure station toward said thick original holding surface;
• movable optical means having a scanning range for scanning an image of a thick original supported on said holding surface, said optical means being movable substantially within the scanning range, wherein said movable optical means scans the thick original while moving toward said sheet original transport means;
• mode selecting means for moving said original holder between a first position wherein said exposure station of the sheet original is within said scanning range for the thick original to allow exposure operations for sheet originals substantially within said scanning range, and a second position wherein said exposure station of the sheet original is out of said scanning range;
• copy processing means for producing on copy material an image of an original image scanned by said optical means;
• a frame for integrally supporting said original holder and said sheet original transport means;
• and
• a guiding member for moving said original holder and sheet original transport means together with said frame through a distance substantially corresponding to the distance between said exposure station and a contiguous end of said holder surface, wherein the scanning distance for thick originals corresponds to the length of the holder surface.