The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 05, 1980
Filed:
Dec. 19, 1978
Paul Feneberg, Buchendorf, DE;
Georg Konigl, Munich, DE;
Gunther Kirchhof, Taufkirchen, DE;
Anton Schatz, Munich, DE;
AGFA-Gevaert, A.G., Leverkusen, DE;
Abstract
A copying-machine projection system successively projects successive strip-shaped zones of an original onto successive strip-shaped zones of a photosensitive surface. The projection system is of the type comprising at least one row of component projection objectives extending transverse to the direction of relative movement as between projection system and photosensitive surface. The individual component projection objectives are constituted by corresponding lenticular elements of plural lens bars, the lens bars extending transverse to the relative-movement direction and being provided with respective rows of lenticular elements. The projection system projects a strip-shaped image onto the photosensitive surface but also forms an intermediate image plane. Located at the latter is a lens-aperture plate, the lens apertures of which are so shaped that the adjoining boundaries of adjoining lens apertures extend at an angle relative to the direction perpendicular to the relative-movement direction, this angle being at most equal to 80.degree.. As a result of this inclination, if the individual light fields projected improperly overlap, improperly overlap more or less than they nominally should, or fail to contact each other, the resultant boost or decrease in illumination is not confined to a longitudinally extending stripe which would be visible in the final copy but instead is averaged out over a surface area whose breadth, measured perpendicular to the relative-movement direction is substantially greater than the breadth of the excessive or absent overlap.