Abstract: A coin actuated print control device for operating a conventional electrostatic or bond copy machine, the device having a coin-operated mode and a direct print bypass mode. The device is easily and quickly coupled to a conventional electrostatic or bond copy machine, eliminating complex, electrical modifications of the conventional copy machine circuitry for providing for reliable coin actuated or bypass operation. The control device circuitry includes a power control relay which provides power to a receptacle plug in the device which is connected to the copy machine, a variable time delay circuit to allow warm-up time between coin actuation and print actuation, and a variable print process timing circuit to allow for power process print time (necessary for different copy machines) prior to shut down of the device.

Abstract: In a projection printing system the pattern mask, whose image is projected onto a light sensitive layer, is encased in a glass sandwich so that any dirt particles on the surfaces of the sandwich are out of focus and are not printed in the light sensitive layer.

Abstract: A mechanism for advancing film relative to a film aperture is releasably mounted for movement between an active position at the film aperture and a passive position spaced from the film aperture and enabling threading of film relative to the film aperture.

Abstract: In the method of exposing a relatively large number of parallel, spaced apart stripe-like areas on the surface of a photo-sensitive member by directing light against such surface through an original photo-mask having a light-permeable pattern comprised of a relatively small number of parallel, spaced apart transparent stripes of lengths substantially smaller than the length of the areas to be exposed, and by effecting repeated relative scanning movements of the photo-sensitive member and photo-mask in the direction of the transparent stripes and relatively shifting the photo-sensitive member and the photo-mask in the direction transverse to the transparent stripes for each of the relative scanning movements so that, upon the completion of the repeated movements, light passing through the light-permeable pattern of the photo-mask will have scanned the desired relatively large number of stripe-like areas to be exposed on the surface of the photo-sensitive member; the transparent stripes of the original photo-ma

Abstract: A unity magnification catoptric image-forming system and an illumination system on the one hand, and an object- and image-surface supporting means on the other hand, are arranged for relative movement to retain the object and image surfaces in unity magnification conjugate planes of the catoptric system while effecting a scanning-type exposure of successive portions of the image surface to successively illuminated portions of the object. Fine motion mechanisms permit accurate preliminary adjustment of the object- and image-receiving surfaces relative to each other while under visual examination with the aid of the catoptric image-forming system.

Abstract: A programmable exposure control device for use on a photographic film printer for producing special effects in motion pictures such as a fade-in, fade-out, lap dissolve or other numerous special effects requiring variations in printing beam intensity. The exposure control device comprises a mechanical shutter capable of progressively varying the intensity of the printing beam at any predetermined rate. A control system is provided for operating the shutter and includes a memory portion for storing preselected operating curves for a plurality of film exposure characteristics. The control unit is connected to a tape reader for supplying information to the control unit, for example, relating to the length of the particular fade desired. The tape reader also may provide information for controlling the position at which a fade or other special effect is to begin or end.

Abstract: Apparatus including a stepping camera, partitioning means and an operating station is disclosed in which full size images of copy successively mounted on a subject holder can be optically imposed on preselected areas of a film (or a printing plate) in a required sequence when supported on a movable platen under control of a digitally programmed indexer. The camera components including the subject holder, objective support, image mask, platen and supporting structure therefor are so structured and related as to assure accurate placement of the images on a film in a programmed sequence at high speed and in such fashion that the images are uniformly sharp and of high resolution. The camera includes interchangeable subject holders such that it is equally useful with reflection copy, transparent originals and negative or positive film.

Abstract: The variation in transparency along the surface of an original is detected and a corresponding transparency-indicating signal is generated. The spectral components of the transparency-indicating signal having frequencies above a predetermined frequency associated with sharp images are integrated to form an integration signal corresponding to the time integral of these higher-frequency spectral components. The determination of whether the original bears an image whose sharpness warrants copying of the original is made by comparing the integration signal against a reference signal.

Abstract: The density of neighboring portions of each of a plurality of successive originals is monitored. An original is copied only if the original is comprised of at least one pair of monitored neighboring portions differing from each other in density by an amount exceeding a reference value.

Abstract: An electrophotographic copying apparatus wherein the original is placed face down onto a stationary transparent holder which is located above a reciprocating carriage for a lens element. The latter images the original onto a light receiving surface which travels along a straight path while the carriage moves in the same direction as the light receiving surface. The carriage can be moved by an eccentric drive, by a wiper which is attached to an endless belt or chain, or by a cam and follower assembly. The original is illuminated by flash lamps which are fired automatically while the carriage moves in the same direction as the light receiving surface.

Abstract: Coin photographic apparatus has a base to which guides are attached, the latter having slots to receive a slidable support or carriage that has recesses that receive a coin or medal to be photographed. A ruled grid rests on a holder and movable sits on a coin to be photographed. A camera and lighting means are operably associated with said apparatus.