Abstract: A reusable electric overlay measurement base pattern includes a pair of current pads forming first and second pads adapted to be contacted by point contacts, a first conductor of controlled width extending between the first and second pads, a pair of voltage pads forming third and fourth pads suitable for contacting by point contacts, two second conductors extending from the third and fourth pads to the first conductor contacting the first conductor at a predetermined spacing, and a fifth pad disposed adjacent and spaced from said first conductor approximately at the midpoint between the two second conductors. This permits a second level conductor to be deposited extending between the fifth pad and said first conductor which, when perfectly aligned, will intersect the first conductor at its midpoint. The misalignment of the second level conductor can be detected by measurements using the five pads.

Abstract: A photosensitive medium driving apparatus comprises a photosensitive medium driven rotatable in the circumferential direction at a uniform peripheral speed, a driving source for rotating the photosensitive medium, and a supporting member for supporting the photosensitive medium for movement in the axial direction of the medium, wherein the photosensitive medium is movable in the axial direction in relation to the rotation of the medium.

Abstract: The toner concentration of a xerographic reproduction device is maintained by use of a patch sensor, wherein the photoconductor's test patch is toned while the photoconductor voltage is substantially zero, and while the developing field is provided by a development electrode voltage source whose polarity is opposite that which is used during reproduction.

Abstract: An improved photographic filmstrip having localized transmission barriers for inhibiting propagation of light into still unimaged transparent portions of microfiche recording system intermediate filmstrips by light-piping action is described. The barriers serve to optically isolate the subsequently-to-be-imaged still unexposed portion of the filmstrip in a dispensing film head from the illumination used to transfer the previously developed image on the exposed portion of the strip onto a permanent recording medium, such as a microfiche film card. The barriers consist of arrays of holes spanning the width of the filmstrip. Multiple scattering and direct escape paths produced by the holes cause significant reduction in the undesired propagation. Additional propagation reduction is achieved by a fiber bearing element pressed over the hole arrays so as to insert fiber clusters into the holes. Use of the arrays for sprocket engagement to facilitate film transport is described.

Abstract: A fire extinguishing device for use with a heat fusing apparatus in an electrophotocopying machine, including a roller movably mounted above a copy paper conveyor associated with and located downstream of the heat fusing apparatus, a moving device for moving the roller into rolling contact with the conveyor when an abnormality is detected in the fusing apparatus during the copying operation, and a device for maintaining the roller out of rolling contact with the conveyor when no abnormality in the fusing apparatus is detected during the copying operation.

Abstract: In a solid-state imaging device wherein filters of the three primary colors in the mosaic filter configuration are stacked on a solid-state imager LSI in which a plurality of picture elements each consisting of a photoelectric conversion element and a scanning element are arrayed in the shape of a matrix; a method of producing a solid-state imaging device wherein the dimensions of filter layout patterns on exposure masks for the respective colors used in case of manufacturing the color filters of:T.sub.R <T.sub.B <T.sub.Gwhere T.sub.R denotes the thickness of the red filter, T.sub.G that of the green filter and T.sub.B that of the blue filter, are smaller than the dimensions of the picture elements, and especially, the dimensions of the filter layout patterns on the exposure mask for manufacturing the green filters are the smallest.

Abstract: In an electrostatic recording apparatus means are provided for precisely mounting various components or processing units about the photosensitive drum. In particular, a subassembly detachably connected to the apparatus supports the drum and is provided with fixed supports to which the processing units such as the charging electrode, developing device, image transfer electrode, etc. are attached. The arrangement assures a precise spacing of the said units relative to the drum.

Abstract: A case for an electrostatic copying apparatus includes a lower casing section and an upper casing section swingably pivoted on one end of the lower casing section. A support mechanism is attached to the upper casing secton for detachably supporting a photosensitive drum. A guide mechanism is attached to the lower casing section, and extends between a first position under the support mechanism and a second position at the other end of the lower casing section. The guide mechanism directs the removed drum from the first position to the second position as the drum is removed, and directs the drum to from the second position to the first position as the drum is inserted.

Abstract: A copy paper separating method for use in an electrophotographic copying apparatus which forms a latent electrostatic image on a recording member is provided. The method includes the step of depositing fine particles having insulating properties and charged to a polarity opposite of that of the toner image on the surface of the recording member before the copy paper is placed over the recording member, to cause the particles to reduce the electrostatic attraction between the copy paper and the recording member, thereby facilitating separation of the copy paper from said recording member.

Abstract: A fire extinguishing device for use with a heat fusing apparatus in an electrophotocopying machine, comprising a roller movably mounted above a copy paper conveyor associated with and located downstream of the heat fusing apparatus, means for moving the roller into rolling contact with the conveyor when an abnormality is detected in the fusing apparatus during the copying operation, and means for maintaining the roller out of rolling contact with the conveyor when no abnormality in the fusing apparatus is detected during the copying operation.

Abstract: A visually descriptive information transmission, storage, and retrieval set, and method of making a preliminarily reproduced set of same. The set utilizes a plurality of sheets of substantially white paper. Each sheet comprises an image area centrally located thereon and coding means of a different nature on each sheet in a set. The coding having a pattern, color, and saturation is located between the image area and at least one edge of each sheet. The coding readily visually identifies each sheet in the set as a distinct entity permitting proper routing or filing thereof. The paper set also has chemical coatings on each sheet which are pressure activated to cause reproduction on successive stacked sheets of data when pressure is applied to the top sheet. Portable vehicles in which sheets of the set may be placed are likewise coded for distinct identification. The method utilizes sheets or overlays of transparent material, having differing coding including a pattern, color, and saturation located thereon.

Abstract: A multiple mode image processing apparatus and method. The apparatus, in a copy mode, processes copies xerographically. In a write mode, images derived from image signals are written on the apparatus photoreceptor by a raster scanner, and in a read mode, the raster scanner scans images developed on the photoreceptor to produce image signals representative thereof. A multiple speed drive is provided for the photoreceptor to move the photoreceptor at a high speed when processing copies xerographically and at a lower speed compatible with the data transmission rate for image signals when writing or reading images.

Abstract: Disclosed is a protected document such as a negotiable instrument, a title instrument, identification document or other documents which should be kept secure from illegal copying by color copiers. The method of making the document comprising preprinting a "void" or other warning or cancellation phrase pattern in half tone or multitone on the document and camouflaging this pattern is also disclosed.

Abstract: A heat regulator for a fuser in a reproduction machine. The heat regulator includes a fuser cooling fan, and a controller having a cooling fan counter. The cooling fan counter manifests the number of copies reproduced up to a predetermined maximum in response to a document scan switch. The contents of the cooling fan counter is the basis for determining the length of time of operation of the cooling fan at the end of a reproduction run. Specifically, the machine cooling fan maintains operation during machine cycle out at the end of a reproduction run for a three second period for each count in the cooling fan counter up to a predetermined maximum.

Abstract: An apparatus for collecting copy sheets in facially reversed or overturned relation with respect to their discharge from a copying machine includes a guide member disposed proximate the discharge port of the machine. The guide member comprises a substantially planar guide portion inclined at a predetermined angle relative to the direction of copy sheet discharge from the machine, and a deflecting portion unitarily extending from the guide portion at a predetermined angle with respect thereto. The apparatus further includes a receiving tray spaced below the discharge port and toward which discharged copy sheets are deflected by contact with the guide and deflecting portions of the guide member for collection in overturned or face reversed orientation.

Abstract: This specification discloses a copying apparatus having an original feeding mechanism for feeding originals by moving the originals on the surface of an original supporting member, characterized in that discharging means acts on the original supporting member from that side thereof opposite to the original supporting side of the original supporting member to discharge the original supporting surface.

Abstract: Diagnostic capability is provided by setting a machine in a jam condition and using non-diagnostic dedicated circuitry. A selector switch is switched from a first predetermined number to a second predetermined number while simultaneously activating a start operation switch. Machine logic is then advanced to a diagnostic state. To exit the diagnostic state, a routine jam clearance is accomplished and the machine returns to the stand by state for normal operation.

Abstract: A color picture tube having a slit type apertured mask, wherein the slit apertures are arranged in columns and the apertures in each column are separated by webs is improved by increasing the radius of curvature of the ends of the apertures at the webs to substantially greater than half the width of the central portions of the respective apertures. Such aperture shape may be achieved by a method wherein the aperture images of a photomaster used in fabricating the mask have greater width at the ends thereof than at the centers of the aperture images.

Abstract: An electro-optical measuring system in a photogrammetric comparator or stereocompiler comprises a visible light transparent phase grating which is carried upon a surface of the photo support plate of the device. The grating is formed as a composite layer of .lambda./4 films of at least two dielectric materials of different refractive index which are deposited on the support in such a manner as to yield parallel bands in which the two film materials are in alternating sequence from band to band. As a result of this structure which ensures a constant physical and optical thickness with respect to transmitted imaging light over the whole granting pattern, image-degrading diffraction of the transmitted visible light is avoided, yet the grating pattern provides interfering diffraction in reflection which may be utilized in a precise displacement measuring system.

Abstract: An anti-copying system or method of coloring an original document with pre-selected background and image colors which, in combination, inhibit or prevent intelligible reproduction on xerographic and electrostatic copying machines.

Abstract: Disclosed is a protected document such as a negotiable instrument, a title instrument, indentification document or other documents which should be kept secure from illegal copying by color copiers. The method of making the document comprising preprinting a "VOID" or other warning or cancellation phrase pattern in half tone or multitone on the document and camouflaging this pattern is also disclosed.

Abstract: An electrographic apparatus provided at its exit opening portion through which a record sheet with a copied picture image formed thereon passes with eaves for preventing a photosensitive body from being exposed to an exterior light entering from the exit opening.

Abstract: There is disclosed a multi-layer tape system, of the type disclosed is Castelluzzo application Ser. No. 930,700, U.S. Pat. No. 4,182,789, for applying register marks or other symbols to aligned art-work sheets used in the graphic arts field. In a two-layer system, each of two superimposed tapes has aligned markings thereon. A weak adhesive secures the two tapes together, and the two outer surfaces are coated with a strong adhesive. In a four-layer system, a separator is disposed between a pair of two-layer systems; the separator has holes therein so that the two tape systems can adhere to each other and remain in alignment, contact being made in the regions of the holes. The relative adhesive strengths maintain the system integrity prior to use while also permitting tape sparation during use. Instead of using clear tapes and printed markings as in the Castelluzzo system, opaque or colored tapes with punched markings are employed.

Abstract: A method of making a mask and a wafer intimately contact each other by means of such a mask aligning apparatus comprising a base having a chamber, a piston apparatus movable up and down in the chamber, a wafer chuck provided at one end of the piston apparatus and adapted to fix the wafer, means for fixing the mask to the upper surface of the wafer in a superposed relationship, drive means adapted to impart a driving force to the piston, so as to move the wafer toward the mask, and means for biasing the piston apparatus in the direction to move the wafer away from the mask.

Abstract: There is described a unique mask and method of making same. The mask is especially useful in high resolution fabrication techniques such as in making magnetic bubble domain structures, semiconductor device structures and the like. The mask includes a suitable support of appropriate density to be substantially transparent to various types of radiation such as, but not limited to, E-beams, X-rays and the like. A layer of material which is substantially opaque to the same radiation and which can have the solubility thereof changed by application of E-beams or the like is provided on the support material. The mask is exposed to the solubility changing radiation wherein a pattern is defined in the layer, the layer is etched in a non-critical etch so that the soluble portion thereof is removed and the remaining material provides a suitable pattern. To the extent necessary, a suitable auxiliary support member can be provided to the support.

Abstract: A word processing system for displaying and reproducing alphanumeric characters on a photocopy machine capable of scanning an original document, having a housing including an electronic keyboard with keys representing individual alphanumeric characters, the housing including a display for viewing a portion of the information keys, and a memory circuit coupled to said keyboard for storing and spacing the alphanumeric indicia in memory.

Abstract: A dual purpose document and copy sheet receptacle for reproducing apparatus pivotally mounted at the copy output end of the apparatus and capable of acting as a copy catch tray in a first position or mode of operation and when pivotted to second position as a document catch tray in a second mode of operation. The dual purpose tray provides the reproducing apparatus in a first mode of operation with the ability to copy extra long documents such as fan fold sheets or rolled copy paper onto fan fold paper or rolled copy paper and neatly stacks the fan fold or collects the rolled paper at the output end of the apparatus and in the second mode of operation with the ability to copy extra long single document and catch them in a large catch tray.

Abstract: A transaction accounting system for the automated royalty accounting of copyright-coded paper documents. The system includes a document copier, a copier access control system which includes a transaction data terminal for input of transaction information such as the date of the transaction, coded copyright information such as contained in the standard serial numbering or standard book numbering systems, user identification and number of copies to be produced. The access control system includes enabling circuits to access the copier upon completion of the data input and one or more data recorders and/or data transmitters to permit use of telephone line transmission of the transaction data and/or other transmitting facilities to communicate with a royalty accounting system. The documents are copyright coded with an optically transparent, electrically conductive coating. The system includes a decoder with its output connected to the transaction data terminal to input the document data.

Abstract: A transaction accounting system for the automated royalty accounting of copyright-coded microfiche documents. The system includes a microfiche copier such as a duplicator and/or hard copy printer, a copier access control system which includes a transaction data terminal for input of transaction information such as the date of the transaction, coded copyright information such as contained in the standard serial numbering or standard book numbering systems, user identification and number of copies to be produced. The access control system includes enabling circuits to access the copier upon completion of the data input and one or more data recorders and/or data transmitters such as an acoustic coupler to permit use of telephone line transmission of the transaction data and/or other transmitting facilities to communicate with a royalty accounting system.

Abstract: The bridges between apertures located at the edge of the shadow mask of a color display tube are made at least 20% wider than the others. The width of the bridges increases linearly from row to row from the center to the edge of the mask whereby a continuously varying brightness distribution is obtained. The reproduction mask used in the fabrication of such a shadow mask can be made photographically by exposing photosensitive material through a pattern of bridges, rotating the pattern and repeating the exposure.

Abstract: An electrophotographic apparatus for producing printing masters utilizing modulated laser light as the exposure source and a continuous process for producing such printing masters involving the steps of plate conveyance, synchronous charging and exposure, and electrostatic development and fusing of electrophotographic printing masters suitable for use in offset or lithographic printing processes. The apparatus comprises a transport system for sequentially conveying printing masters to the exposure platen which retains the masters in a fixed plane for synchronous charging and exposure, utilizing as a light source, a modulated laser beam. The optical and deflecting components of the exposure system are mounted in a moveable carriage member adapted to traverse a plane substantially parallel to the plane of the exposure platen such that the exposure laser will raster scan the platen area.

Abstract: Process and apparatus for duplicating on microfiche the intelligence appearing on a photoplastic microfiche master by irradiating the duplicate through the master with high intensity moderately collimated light. Photoplastic film having a relatively thick thermoplastic layer is used as the master. The master and the duplicate are separated by a gap of predetermined size, which gap can be filled by air, plastic, glass or any other transparent medium. Multiple light sources isolated from one another, are used and provision is made for absorbing and dissipating some of the heat before the light reaches the master. Means are provided for assuring relatively uniform light intensity across the entire recording face and for assuring consistent irradiation of the duplicate irrespective of lamp age or line voltage variations.

Abstract: Drum support apparatus including outboard and inboard hubs having outer surfaces adapted for interface fitting with the inside surface of a drum. The hubs while being supported on a shaft that is cantilevered from a frame have recessed areas on central portions thereof to cooperate with locking tabs located on a tubular member loosely fitted on the shaft whereby rotation of the hubs by approximately 20.degree. creates a semi-rigid assembly that is rigidly secured to the shaft by the tightening of a single nut at the center of the drum. An assembly of this type creates an equal distribution of force on the hubs, thus diminishing circular run-out of the drum.

Abstract: Techniques to render documents and like objects uncopyable by photocopy means. Illumination spectral composition, object background color, and photoreceptor sensitivity are appropriately combined such that the photoreceptor perceives no object contrast. The result may be either a blackout or a whiteout of the object information.

Abstract: An electrophotographic copying machine includes a photosensitive drum rotatably mounted in a housing. The drum may be taken out from the housing through an opening formed in the top wall thereof by a supporting mechanism when a covering for closing the opening is pivoted to open the opening.

Abstract: A graphic aid and method and system associated therewith are provided for producing aligned patterns in registry such as circuit board patterns and portions thereof. Certain features of the invention make it especially useful in fabricating multiple patterns which are discrete but in registry and in which one pattern represents a portion common with all the rest. Such a system is exemplified by two sided or multilayer circuit boards. The aid includes a diaphanous layout sheet whereon one or more sets of light absorptive pattern elements and reflective marks are arranged to conform to desired circuit patterns for the surfaces of a printed circuit board. A light absorptive background sheet is also provided and it is selectively positioned behind the layout sheet, to produce visible contrast with the reflective pattern marks thereon.

Abstract: An apparatus for peeling off an adherent, electrostatically charged, flexible recording material from an electroconductive supporting plate, comprising an electroconductive supporting plate adapted to contact one side of the material, a guide for the recording material so mounted as to project beyond an image plane on the supporting plate in the direction in which the recording material is to be peeled off, a holding element positioned upstream of the guide and the supporting plate, and a pulling device for exerting a lateral pull on the recording material when the material is held by the holding element, whereby the material is progressively separated from the image plane in a wedge-like manner.

Abstract: An apparatus for use in producing an illumination pattern on an electrically conductive mask blank having a photoresist coating thereon for a color cathode ray tube. The apparatus comprises a rigid, transparent substrate which has a first preselected pattern on the substrate, having a preselected optical density. The first pattern has first areas corresponding in distribution to the pattern of apertures to be formed in a mask blank, at least a predetermined group of the first areas being smaller in size than the desired ultimate mask aperture size. The substrate has a second preselected pattern having second areas surrounding the first areas, at least a predetermined group of the second areas corresponding to the first group of areas and having the size and outer configuration of the desired ultimate mask apertures. A third area between the second areas of the second preselected pattern has an optical density substantially different from the optical density of the first areas of the first preselected pattern.

Abstract: An endless photosensitive belt assembly unit or "module" in a reproducing apparatus is supported near all four corners on slide rails for displacement to a position outside the apparatus. To give ready access to the photosensitive belt when the unit is in its outer position, the unit is pivotally mounted on the slide rails.

Abstract: In the alignment of successive masks relative to a photo-sensitive substrate in the manufacture of multi-layers respective fiducial marks on the substrate and on each mask are brought into the correct relative position for exposure of the substrate, without introducing the inaccuracy resulting from the superimposition of successive photographic images of the mask fiducial marks on the substrate. In one method the mask and substrate fiducial marks are arranged to be out of register with each other when the mask and substrate are correctly aligned, the two sets of fiducial marks being brought into register by an optical beam displacing arrangement.

Abstract: Disclosed is a photomask and a method for the manufacture thereof. A metal stencil is disposed on a glass substrate such that only preselected areas of the glass which are to be made opaque are exposed. A grit-etch step follows in which depressions are formed in the glass substrate in the preselected areas. Fusible masking material is sprayed in the depressions through the metal stencil. The masking material is preferably in particulate form in a volatile carrier liquid. The carrier liquid is preferably first driven off and, then, the combination is exposed to a relatively high temperature that fuses the masking material to the substrate.

Abstract: A roller is coupled to a movable support frame which in a first position bears a flexible halftone screen which is fully wound up about said roller. As the support frame is translated in a first direction across the film mounted upon a vacuum platen, the flexible screen unwinds and is laid flat across the platen. When the movable support frame is translated in a second direction, the screen is thereafter wound up about said roller somewhat in the manner of a "reverse windowshade.

Abstract: Disclosed is an electrophotographic copying apparatus comprising a cylindrical drum member having a circumferential wall and an aperture in the circumferential wall and a photoconductor belt having two end sections and covering the outer face of the circumferential wall, passing through the aperture to extend into the drum to form a seal for the aperture, and being secured within the drum, wherein one of the end sections is attached to a means for maintaining tension in the belt and the other end section is attached to a fixed member within the drum. The drum may also have end walls for attachment to the one or more fixed members within the drum.

Abstract: Methods for treating or producing original documents to inhibit, if not preclude, the reproduction of such documents by copying processes. The documents so produced favor the visual response of the human eye over the physical response of a copying machine so that the graphical information imprinted on the document background is readily perceptible by the human eye but imperceptible by the sensor and associated processes of a copying machine.

Abstract: Control apparatus for a xerographic type copying machine which enables the service technician to give the machine operator or user, as the operator's experience and training progresses, increased control over, and responsibility for, critical machine operating settings. The control apparatus includes a master lock to prevent unauthorized tampering with the machine settings by anyone except the authorized service technician. Individual locks, accessible only to the service technician, are provided for controls which it is expected that the operator or user, with training and experience, can ultimately handle. To nevertheless restrict and control the degree of operator responsibility and involvement in adjusting machine operating settings, means are provided with each control to enable the amount of adjustment that can be made limited.

Abstract: A process and apparatus for the production of exposed printing plates consisting of a resin layer and a support, said resin layer being prepared from a fluid photopolymerizable material which is introduced into a mold having at least one transparent wall which is covered with an image-bearing transparency, and being exposed through said image-bearing transparency, which causes photopolymerization of the exposed areas of the resin layer and bonds these areas to the support which is provided with an adhesive layer.

Abstract: In the alignment of successive masks relative to a photo-sensitive substrate in the manufacture of multilayers respective fiducial marks on the substrate and on each mask are brought into the correct relative position for exposure of the substrate, without introducing the inaccuracy resulting from the superimposition of successive photographic images of the mask fiducial marks on the substrate. In one method the mask and substrate fiducial marks are arranged to be out of register with each other when the mask and substrate are correctly aligned, the two sets of fiducial marks being brought into register by an optical beam displacing arrangement.

Abstract: A sensitive drum of an electrophotographic reproducing machine, when disengaged from its driving mechanism, is received by rails provided at the opposited ends thereof and, after pulled along the rails, received and supported rotatably by rotary supporting members provided on extensions of the rails, respectively, for the purpose of cleaning of the drum.

Abstract: A microfiche or other form of microfilm record having a main set of images thereon which may be selectively projected onto a viewing screen. In order to facilitate the making of reproductions of the recorded images without interposing a mirror between the sensitive film or the plate of the reproducer and the image projection system, the microfiche incorporates a companion set of images each being a reversed image of the corresponding image on the main set whereby when a reversed image is projected, it may be directly reproduced to produce a non-reversed, readable copy.

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.