Abstract: Rolls include a core and a glass outer coating on the core. The glass can be electrically charged and discharged. The outer coatings have smooth finishes and controlled electrical properties. The outer coatings can also provide selected mechanical, chemical and thermal properties. The rolls can be used in various applications in which controlled electrical properties are desired. For example, the rolls can be used as charge donor rolls in electrostatographic imaging apparatus.

Abstract: A photographic film strip in the form of a length of photographic film has a pre-exposed area and an unexposed area. The pre-exposed area is continuous and extends along one edge of the strip between ends of the strip. The unexposed area is also continuous and has a length suitable for making multiple single exposure frames with adjacent frames being separated by a frame line. Upon development the film, an image formed by the pre-exposed section of each print will extend between opposite edges of prints formed by individual frames without the need to preregister the film in a camera. The pre-exposure comprises a contact exposure. A strip of film can be placed in contact with a partially pre-exposed master on a cylindrical drum in a light tight housing so that pre-exposed section of the film can be exposed by one activation of an electronic flash located in the center of the drum.

Abstract: A photographic contact printing device has a point-like light source (17) and two uni-directionally curved parabolically cylindrical mirrors (18, 19) the axis of curvature (22, 23) of which are perpendicular to each other, and one axis (23) being parallel to the exposure plane.

Abstract: An illuminating apparatus for illuminating objects with lights has a rotary member having a plurality of types of fluorescent materials, a driving device for driving the rotary member, a lighting device for causing the fluorescent materials to emit lights, and a plurality of light paths for guiding the lights from the fluorescent materials to a plurality of objects. A recording apparatus making use of the illuminating apparatus has an image reading device capable of reading an image by device of an illuminating light, an image forming device capable of forming an image on the recording member by device of an illuminating light, a first illuminating light path through which the light emitted from one of the fluorescent materials is guided to the image reading device, a second illuminating light path through which the light emitted from one of the fluorescent materials is guided to the image forming device.

Abstract: A method and apparatus for locking the drive hubs of a forms overlay station in a laser electrographic printer to its transparent forms overlay drum includes counterboring a plurality of holes through the drum into the hubs, inserting a resilient member such as an O-ring into each counterbored hole, and compressing the resilient member to form an interference fit among the compressed resilient member and an interface formed within the counterbored hole by the drum and hubs.

Abstract: In a document handling device two drive rollers are located on opposite sides of an exposure position. A drum is urged against the rollers and guides document sheets through the exposure position. Because the drum is not radially constrained except for the drive rollers, it is inexpensive to mount and manufacture.

Abstract: An electrophotocopier for relatively large and valuable originals such as engineering drawings, wherein an electrostatic image is formed by contact exposure using a fluorescent light source and wherein contamination of the original by solid or liquid components of the developer is prevented by a transparent membrane disposed between the photoconductive imaging surface and the original.

Abstract: A device, which is especially useful in color scanning equipment and the like, for supporting a photograhic transparency on a scanning cylinder, in which the cylinder surface is provided with a window and a layer of magnetic rubber surrounding the window, and a trimming mask made of magnetic material held in position by the rubber magnet layer, thereby enabling the support of the photographic transparency to be scanned between the trimming mask and the magnet layer so that the transparency covers the window.

Abstract: Electrical components in an elongated array are suspended within the interior of a sleeve type closed loop member such as a rotatable photoconductor drum or closed loop belt of a compact copier. Preferably some of the components are mounted on a board and held within the sleeve by edge slots or the like in sleeve mounting end caps, attached to the machine frame. A drive motor can be attached as part of the array and further can be arranged to drive a fan blade so that cooling air is forced through the sleeve and over the components so that the sleeve acts as a plenum. Power can be coupled from the drive motor through the end mounts to motivate the sleeve in the direction of its closed loop and/or apply power to other components of the copier.

Abstract: Apparatus for the production of duplicate micro and other film from an original film in which the duplicate film of considerably greater length than the original film is housed on a spool in a light tight magazine and fed therefrom through a light trapped slot, the duplicate film and the original film being fed together over a transparent cylinder in a lamp house, an opaque slotted cylindrical sleeve surrounded by the cylinder and a lamp within the sleeve. The films are held in contact with the cylinder by an endless belt driven synchronously with the take up spools for the films, a sensing finger being mounted to engage the original film as it is taken up by the delivery spool to stop the apparatus a predetermined interval after the last image on the film. The duplicate film in the magazine operates a meter to register the length of film remaining on the spool in the magazine.

Abstract: A rotary open-ended tubular drum of transparent material is supported within a housing by a pair of spaced support rolls and an endless flexible belt entrained over a pair of spaced apart feed rolls, the belt being generally opposed to the support rolls. The belt and drum are driven by a motor to feed a master sheet and a sensitized sheet to be printed, in face-to-face contact, between a drum engaging feeding flight portion of the belt and the portion of the drum engaged by the belt. An ultraviolet lamp is mounted in outwardly spaced relation to one end of the drum, and delivers ultraviolet light axially toward the interior of the drum. A stationary mirror within the drum is positioned to reflect ultraviolet light from the lamp toward an interior surface of the portion of the drum that is engaged by the feeding flight of the belt.

Abstract: In the non-mechanical printing art relating to equipment for reproducing a negative on a photoelectric data carrier, a mechanical device for readily detachably applying a negative to a cylinder in such a manner as to assure flush application of the negative to the cylinder and proper positioning of the negative. The negative is provided with a spring contact strip at the leading edge and a knob contact strip at the trailing edge. The film is wrapped around the cylinder such that springs on the spring contact strip are caused to snap over knobs on the knob contact strip causing a tight wrapping of the film about the cylinder. The spring contact strip and the knob contact strip are positioned in proper registry with the film by the use of round and square locating markers and corresponding holes on the films and the strips respectively.

Abstract: A printing head assembly for exposing raw stock film with a preprint film in a contact film printer including a dual roller gate assembly. The dual roller gate assembly includes a pair of rollers mounted on a roller frame for engaging the preprint film and raw stock film on opposite sides of the printing aperture for wrapping both the preprint and raw stock film about a segment of the printing sprocket of substantially greater length than the printing aperture. An adjustable biasing spring permits regulation of the tension applied through the rollers to the film runs. The dual roller gate assembly includes a selectively operable retraction device to withdraw the rollers away from the printing sprocket for loading and unloading the film printer. In an alternate embodiment, the dual roller gate assembly is pivotally mounted by an offset shaft which permits pivotal movement of the dual roller gate assembly to provide clearance for loading the film printer.

Abstract: Disclosed is a sheet conveying mechanism for an original to be reproduced in a reproducing apparatus, comprising means, including a rotatable drum having an air-permeable circumferential shell surface, for supporting the original; non-rotatable means disposed within the drum for dividing the space within the drum and the circumferential shell surface of the drum into three separate regions; means associated with the drum for selectively producing positive and negative pressure within each of the separate drum regions; means for exposing and scanning the original, positioned adjacent a first one of said separate drum regions; means, associated with the drum and being responsive to movement of the original around the drum, for controlling the pressure-producing means; and first and second means, cooperating with the drum and located adjacent the circumferential shell surface of the drum in the area of a second one of the separate drum regions, for transporting the original around the drum.

Abstract: A film slewing device is incorporated into a contact printer of the type in which a free running inner copy film and a driven outer master film are transported in layered contact on the surface of a free wheeling drum through a light exposure region by use of a master film drive roller and a film coupling pressure roller. The slewing device can selectively provide independent drive of the master film while holding the copy film stationary. This is accomplished by use of a thin arcuate film separating member that is conformed to the outer surface of the drum and that slides on the outer surface of the copy film. The film separating member can be slideably inserted between copy and master films in the region of light exposure. It has idling rollers on its outer surfaces to permit free passage of the outer master film. The pressure roller is disengaged when the separating member is positioned between films to prevent movement of the copy film.

Abstract: A photographic duplicating apparatus comprising a curved film holder for holding a master film and a copy film in close proximity to a preferably elongate tubular light source mounted at the center of curvature of the holder, a shutter which preferably consists of an inner and outer tube mounted coaxially one within the other in the axis of the light source. Preferably a series of units are provided each with an outer tube and holder which rotate sequentially about the inner tube and light source.

Abstract: An apparatus for exposing flexible contact originals or negatives to flexible sensitized reproduction media consisting of a rotatable transparent or translucent cylinder, a fluorescent tube located axially therein, a flexible cover member attached thereto at one end with the other end being free and unsupported for manual pulling action, and spring biased return mechanism for drawing the cover member about the periphery of the cylinder. The apparatus has a manually controlled braking system which normally prevents rotation of the cylinder and is manually released by the operator of the apparatus to permit the spring biased return to draw the cover member about the cylinder.