초록 ▼

The apparatus has separate original placing stations for producing copies of an original which is bulky, as in the form of a book, and of an original which is in sheet form. In one of these two original placing stations the original remains stationary and is illuminated by a slit illuminating device

The apparatus has separate original placing stations for producing copies of an original which is bulky, as in the form of a book, and of an original which is in sheet form. In one of these two original placing stations the original remains stationary and is illuminated by a slit illuminating device which is reciprocated, while, in the other original placing station the original is moved and a slit illuminating device remains stationary to effect illumination of the original. Separate slit illuminating devices can be used for the two separate original placing stations, or a common slit illuminating device can be used for the two original placing stations. Even when separate illuminating devices are used, part of the optical system and a photosensitive member are used in common with the two stations. In the original placing station wherein the original remains stationary, copies of sizes different from the size of the original can be produced by varying the rate of movement of the slit illuminating device and the optical path length of the optical system. In the original placing station wherein the original is moved, copies of sizes different from the size of the original can be produced by varying the original feed speed and the optical path length of the optical system.

대표청구항 ▼

A copying apparatus, comprising, in combination, a first original placing station having a contact glass plate for placing a bulky original thereon; a second original placing station having a device for conveying an original in sheet form, and having an illuminating glass plate; at least one slit-il

A copying apparatus, comprising, in combination, a first original placing station having a contact glass plate for placing a bulky original thereon; a second original placing station having a device for conveying an original in sheet form, and having an illuminating glass plate; at least one slit-illuminating device operatively associated with said original placing stations to illuminate an original thereon; at least one optical system operable to form an optical image of an original placed on an original placing station; a photosensitive member arranged to be exposed to the optical image of An original to form thereon an electrostatic latent image of the original; a developing device operable to develop the electrostatic latent image into a visible image; and means operable to switch the copying operation between said first and second original placing stations; including means operable to vary the degree of magnification of an original placed in said second original placing station by changing the speed of the original conveying device thereof and by moving at least one of an element of said optical system, a surface of the original, and the photosensitive member, whereby to vary the optical path length.