Abstract A slit exposure device for projecting an image of a stationary original in linear portions onto a moving photosensitive belt (9), which device is movable back and forth parallel to said stationary original and comprises an exposure device (22), an optical system (20, 21), at least two interconnected deflecting rollers (10, 11) and drive means (6, 31, 32) for moving the rollers parallel with the optical system past the object plane (2). In said exposure device at east one deflecting roller deflects the photosensitive belt from its original direction of movement in the anti-clockwise direction and at least one deflecting roller deflects the photosensitive belt in the clockwise direction and the optical system (20, 21) projects the image in linear portions onto the photosensitive belt within the path formed by the deflecting parts and the part between the deflected parts of the photosensitive belt.
A slit exposure device for projecting an image of an original in linear portions onto a moving photosensitive element (9) in belt form, the device comprising a stationary object plane (2), an exposure device (22) for illuminating the original and an optical system (20,21) movable back and forth parallel to said stationary object plane (2), characterised in that the slit exposure device is provided with at least two interconnected deflecting rollers (10,11) and with drive means (6, 31,32) for moving said rollers (10,11) parallel with the optical system (20,21) past the object plane (2), at least one deflecting roller deflecting the photosensitive element (9) from its original direction of movement in the anti-clockwise direction and at least one deflecting roller deflecting the photosensitive element (9) in the clockwise direction, and the optical system (20,21) projecting the image in linear portions onto the photosensitive element (9) within the path formed by the deflected parts and the part between the deflected parts of the photosensitive element.
Claim 2
Dependent Claim
164 words
A slit exposure device for projecting an image of an original in linear portions onto a moving photosensitive element (9) in belt form, the device comprising a stationary object plane (2), an exposure device (22) for illuminating the original and an optical system (20,21) movable back and forth parallel to said stationary object plane (2), characterised in that the slit exposure device is provided with at least two interconnected deflecting rollers (10,11) and with drive means (6, 31,32) for moving said rollers (10,11) parallel with the optical system (20,21) past the object plane (2), at least one deflecting roller deflecting the photosensitive element (9) from its original direction of movement in the anti-clockwise direction and at least one deflecting roller deflecting the photosensitive element (9) in the clockwise direction, and the optical system (20,21) projecting the image in linear portions onto the photosensitive element (9) within the path formed by the deflected parts and the part between the deflected parts of the photosensitive element.
Claim 3
Dependent Claim
74 words
A slit exposure device according to claim 1, characterised in that the drive means (6,31,32) for the deflecting rollers (10,11) comprise a pulley or gear (31) fixed to the shaft of one of said deflecting rollers with the aid of disconnectable clamping means, and a substantially stationary guide member (32) which is arranged in a non-slip contact with said pulley or gear (31) and is at least largely parallel to the object plane (2).
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