Photocopying – Projection printing and copying cameras – Original moves continuously
Patent
1977-11-25
1979-11-06
Braun, Fred L.
Photocopying
Projection printing and copying cameras
Original moves continuously
355 8, 355 51, G03B 2748, G03B 2750
Patent
active
041734114
ABSTRACT:
Relative movement is effected between the original and the projection system of the copying machine, and the latter projects images of successive transverse strip-shaped sections of the original onto the recording medium. The projection system comprises a plurality of lens-row systems. Each lens-row system includes a first lens row which receives light from a strip-shaped section of the original and projects into an intermediate image plane, and a second lens row which receives light from the intermediate image plane and projects that light onto the recording medium. The lens-row systems are spaced apart in a direction transverse to the direction of elongation of the individual lens rows. The light passing through each lens-row system includes a plurality of central rays, each passing through the optical center of one lens element of the first lens row and through the optical center of the corresponding lens element of the second lens row. Optical deflecting structure is utilized to cause the central rays of the plural lens-row systems to converge both in the vicinity of the original and in the vicinity of the recording medium. Thus, when the plural lens-row systems image onto the recording medium a particular strip-shaped section of the original, this section is being imaged onto the recording medium by all lens-row systems simultaneously, not successively.
REFERENCES:
patent: 1752753 (1930-04-01), Owens
patent: 3346739 (1967-10-01), Jenkner
patent: 3584950 (1971-06-01), Gundlach
patent: 3592542 (1971-07-01), Kaufer et al.
patent: 3687545 (1972-08-01), Moorhusen
patent: 3788740 (1974-01-01), Shogren
Eppe Rudolf
Konigl Georg
Massengeil Hans A.
Pfeifer Josef
Schatz Anton
AGFA-Gevaert A.G.
Braun Fred L.
Striker Michael J.
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