Abstract: Outdoor lighting fixture utilizes lamp ballast which includes both solid-state control circuitry and a relatively massive inductor ballast. The solid-state control circuitry is mounted in a separate housing, such as the photocontrol housing, which is affixed to the exterior of the fixture by means of a plug-type receptacle, and the relatively massive inductor portion of the ballast is contained within the fixture body. Those portions of the solid-state control circuitry which require cooling use the separate housing as a heat sink. If troubles are encountered in the solid-state circuitry, the entire circuit can be replaced simply by plugging in a new unit.

Abstract: An active crossmixer comprising a pair of rotatably driven augers and a baffle for partially submerging the augers in developer is mounted in the development system of an electrostatic processor above the sump in a position to intercept the developer returning from the development zone and any additional toner added to maintain the toner concentration at a suitable high level. The developer is divided between the augers which, in turn, laterally transport the developer in opposite directions. Preferably, the baffle is apertured so that developer not only flows over the ends of the baffle but also through the baffle, thereby distributing the developer across the full width of the sump.

Abstract: An illumination means for use in association with a SELFOC image transmitter in a photocopying machine. The illumination means comprises at least one light generator in the form of a tubular fluorescent lamp or similar means emitting light through a slit disposed parallel to the longitudinal axis thereof, and an associated light-guide which is made of glass, plastic, or other material having a high refractive index, is generally equal in length to the light-generator, has a generally trapezoidal cross-section, and directs light emitted by the light-generator into an illumination slot or shutter means provided in or below a document rest for illumination of successive portions of a document to be copied, the light-guide broad base and narrow base being proximate to, in line with, and generally equal in width to the light-generator slit and the document rest slot, respectively.

Abstract: A fluorescent lantern includes a tubular extruded body portion closed with two covers at the respective opposite ends, one of which is removably mounted. A planar reflector, which extends along the length of the enclosure proximate to a curved side in the form of a lens, includes a tab at one end thereof to which the collector tab of an output transistor is mounted, the reflector tab acting as a heat sink for maintaining the output transistor at a low operating temperature. A fluorescent bulb extends along the length of the enclosure and is disposed between the curved lens and the reflector to enhance the amount of light transmitted through the lens. Electrical terminals and a switch are connectable to a source of direct voltage, either external or to batteries housed within the enclosure, and a circuit is disposed within the enclosure for converting the direct voltage into an alternating voltage suitable for energizing the fluorescent bulb when applied across the latter.

Abstract: An improved apparatus is disclosed for transferring toner from the surface of a toner-bearing drum, such as a xerographic drum, to a support medium for the toner, such as plain paper. The improvement relates to apparatus of the type which employs a transfer web or belt to remove toner from the toner-bearing drum and to transfer it to a support medium. In such apparatus, it is typical for the transfer web to be at least partially driven by means of its contact with the toner-bearing drum and/or transfer rollers.The improvement described herein comprises providing means for simultaneously disengaging the toner-bearing drum and at least one of the transfer rollers from the transfer web at least once per web cycle, and also providing means for mechanically correcting web alignment and registration while the toner-bearing drum and transfer roller are disengaged. Suitable means for disengaging the toner-bearing drum and transfer roller include the provision of indented surfaces on the drum and transfer roller.

Abstract: A capacitor-energized electromagnetic trigger device controls the energization of a camera motor which drives a film transport and shutter mechanism. For one-frame photography the motor is de-energized after a predetermined number of revolutions and then the transport and shutter mechanism is immobilized by a restraining device. For continuous photography the motor continues to operate and the restraining device is maintained ineffective. For repetitive one-frame photography, the capacitor is recharged after a one-frame cycle and the cycle is repeated. Embodiments are disclosed having different types of switching circuits, including different arrangements of transistor switches, SCR switches, mode selection switches, reset switches, and starting and holding coils.

Abstract: A system employing at least one separation roller continuously contacting the outside surface of a web and tracked to move in a fixed approximately elliptical path for compensating for web motion during separation of the web from another surface to enable a bead of accumulated material built up at the line of contact between the web and the other surface to pass therebetween without changing the web velocity. In a preferred embodiment, the system is employed in photoelectrophoretic imaging to bypass a bead of imaging suspension built up at the imaging nip during separation of two webs immediately after completion of imaging to thereby permit dissipation or passage of the liquid bead without changing the advancing web velocity.

Abstract: An electrophotographic fixing device which is fundamentally constructed by assembling a heat fusing roller made of a resilient material, a rigid press-contacting roller, and a heating roller, wherein the heat fusing roller is provided at a position to contact a copying material at the side thereof bearing a developed image, and has its surface heated by means of the heating roller, and wherein the copying material is pressed against the heat fusing roller by the press-contacting roller to complete the image fixing. The fixing device further includes means to apply an appropriate quantity of an image separating agent onto a front end part of a non-fixed reproduced image on the copying material, over a certain width, the device being provided at a position immediately preceding the fixing device and actuated by a timer.

Abstract: A color image reproduction system wherein there are recorded at different angular orientations on a deformation imaging member at least two images corresponding respectively to the color content of at least two different colors of an original multicolor image. Readout illumination provided by an extended light source is converted to a plurality of point sources and deflected to the imaged member by a member comprising a transparent substrate carrying a plurality of mirrored areas. The information- modulated illumination is then reflected to provide a reproduction of the original image at an output image plane.

Abstract: A simplified camera loading a film having perforations directly therein, wherein film advance and shutter actuation are effected by three basic elements, which are a shutter actuation plate, a film advance lever, and a release lever, thereby to render to minimize necessary elements and to reduce the cost thereof.

Abstract: An improved flash lamp attachment for self-developing collapsible cameras provides high pressure xenon flash illumination by means of removable and separate flash lamp and power-pack assemblies. The powerpack circuitry utilizes part of the voltage provided within the camera film battery pack along with voltage supplied by an auxiliary battery disposably contained within the power-pack assembly.

Abstract: Apparatus for illuminating under water without ground fault interrupters comprising a 12-volt sealed beam lamp, electrical cord, and cigarette lighter plug for powering from the electrical system of a vehicle. A housing is recessed to receive the lamp and two types of sealers, one sealing the terminals and the other generally filling the void between the lamp and recess. A threaded stud with threaded fastener and washer is embedded in the void filling material and penetrates the housing to receive a vacuum cup suitable for holding the lamp on the side or bottom of a pool.

Abstract: A biased roller electrostatographic image transfer system in which the diameter of a resilient bias transfer roll is slightly larger at its outer end areas in comparison to its central copy sheet engaging area, so that the majority of the roll loading pressure is absorbed by these larger diameter end steps, which roll directly against the imaging surface outside of the copy area, and so that a relatively lower roll pressure is provided against the copy sheet in the operating nip. This reduction in the mechanical pressure in the transfer nip can provide lower "hollow character" transfer defects, yet allows a sufficiently high roller loading force to prevent roll bounce and vibration.

Abstract: An apparatus for producing ring patterns from electron diffraction spot patterns, which comprises in combination a transparent disc rotatably mounted, rotating means for said disc, a light source beneath said disc, and photographic means above said disc. The invention also embodies a method for producing ring pattern negatives from an electron diffraction spot pattern negative by photographing the spot pattern negative while it revolves at a speed of at least about 0.5 rps.

Abstract: An apparatus in which a quantity of particles is stored and gradually dispensed to a mix thereof. Bridging and caking of the particles is prevented by forming grooves and inducing vibrations in the developer mix at predetermined intervals of time.

Abstract: Apparatus for developing exposed diazotype sheet material in which an accurately metered amount of liquid developer is applied to the sheet material by an applicator roller. The roller surface is essentially smooth and liquid developer is applied to the roller surface in an amount metered by a metering blade assembly which includes a flexible support member carrying a resilient backing layer which, in turn, carries a fine mesh screen held in contact with the smooth surface of the roller. A sheet of smooth, essentially continuous material is interposed between the screen and the roller surface when the apparatus is not in use and is retracted to enable direct contact between the screen and the roller surface when the apparatus is in use.

Abstract: An electrophotographic system is described in which a photoconductive ion modulator screen is used in conjunction with an anodized aluminum dielectric imaging surface. This combination enables the steps of image transfer and fixing to be carried out simultaneously without destroying the latent image produced on the dielectric imaging surface.A duplex anodized aluminum coating is prepared by forming a porous aluminum oxide layer by electrolytically oxidizing an aluminum surface and thereafter continuing the electrolytic oxidation under conditions which produce a barrier type aluminum oxide layer. The resulting duplex anodized aluminum coating containing both porous type aluminum oxide and barrier type aluminum oxide is used as the dielectric imaging surface in this electrophotographic system.

Abstract: An electric shutter having a shutter release stop device that detects the absence of cocking of the shutter and that an electromagnet in the exposure control circuit of the shutter is not properly energized either because the battery is ineffective because it is expended or improperly connected in the circuit or not in the circuit. Detecting means initiates the action of a lock lever or bar that engages the camera shutter release lever and locks it so that it cannot be completely depressed for taking of an exposure. The taking of a photographic exposure is accordingly precluded and the waste of power and film is avoided.

Abstract: A photographic camera equipped with an automatic film transporting mechanism, a portion of which is incorporated into a hingedly supported lid which is provided at the rear of the camera for selectively opening and closing a film receiving chamber and the other portion is incorporated into the body of the camera. Linkage between the portion of the transporting mechanism in the back lid and the portion thereof in the camera body is achieved by the use of a motion transmitter mounted on a support spindle for supporting the back lid to the camera body.

Abstract: An optical system in which a screened light pattern and a light image of an original document are projected onto a common region of a light receiving member forming a modulated light image thereon. Collimated light rays are employed in the formation of the screened light pattern.