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| Number | Title | Issue Date |
| 5673907 | Misfeed detector for multi tray sheet feeders The invention relates to an apparatus for detecting sheet misfeed from a multi-tray sheet feeder. The thickness of the first sheet fed from each tray is detected by a common sensor and a thickness value is placed in memory for that tray. Each sheet subseq... | 10/07/1997 |
| 4584590 | Shear mode transducer for drop-on-demand liquid ejector A single piezoelectric transducer is used to drive an array of drop-on-demand ink jet ejectors. This is accomplished by utilizing a plurality of electrodes which divide the piezoelectric transducer into discrete, deformable sections, each section correspo... | 04/22/1986 |
| 4326205 | Coincidence fluid displacement and velocity expression of droplet A coincidence ink jet principle is disclosed wherein each ink jet has two inlet passages communicated to an outlet orifice. Each inlet passage is communicated to a respective transducer chamber. The fluid displacement and fluid velocity effected by a pres... | 04/20/1982 |
| 4150402 | Method and apparatus for reducing the effect of laser noise in a scanning laser read system The output beam from a laser scans an input document and the signal reflected therefrom, corresponding to information on the document, is detected and amplified in a first amplifier and converted to an electrical signal. The laser beam is also sampled pri... | 04/17/1979 |
| 4138635 | Alternating current generator using light dependent resistor Parallel connections are provided from high voltage power supplies of opposite polarities through separate light dependent resistors to an electrical load. Separate light emitting diodes are associated with each of the light dependent resistors and are dr... | 02/06/1979 |
| 4127335 | Impact printer with cartridge print wheel An impact printer is provided with an easy load print wheel mechanism. A print wheel cartridge containing a print wheel therein, is inserted into position without disturbing the position of a print wheel drive motor, a ribbon cartridge or hammer mechanism... | 11/28/1978 |
| 4126711 | Charge pattern development method and apparatus A liquid developer is presented to a charge pattern on a photoconductor surface as an evenly distributed array of droplets passing tangentially to it. The droplets emanate from a series of jets and are spread into an even pattern electromagnetically. The ... | 11/21/1978 |
| 4126894 | Memory overlay linking system A mapping arrangement for memory overlay wherein the address coordinates are referenced to a main serial memory. This main memory is partitioned into pages of equal size. An accelerator memory is concurrently loaded with a few pages representing a small p... | 11/21/1978 |
| 4126893 | Interrupt request controller for data processing system A memory control processor adapted to expand a random access or accelerator memory by logical overlays which performs these overlays into memory fields (pages) on the basis of page usage history. To provide a quick reference to page use a chronological se... | 11/21/1978 |
| 4125318 | TIR modulator An electro-optic modulator/deflector for use with a light beam comprising at least two wavelengths of light including an electro-optical material and an electrode pattern adjacent a first surface of said material arranged in response to a voltage supply t... | 11/14/1978 |
| 4124312 | Impact printer with print wheel cartridge An impact printer is provided with an easy load print wheel mechanism. A print wheel cartridge, containing a print wheel therein, is inserted into a print wheel loaded position and removed therefrom without disturbing the position of a print wheel drive m... | 11/07/1978 |
| 4122539 | Magnetic bubble element A magnetic bubble element which is useful as an image information processing element. A thin film made of a magnetic bubble forming material has a plurality of wedge-formed patterns made of a non-magnetostriction soft magnetic thin film is formed on the u... | 10/24/1978 |
| 4121153 | Tapered resistor meter An improved analog meter is provided having no moving parts. This meter comprises a tapered resistor device having a tapered, electrically resistive element which develops a non-uniform temperature profile on electrical energization and a heat sensitive e... | 10/17/1978 |
| 4119907 | Power factor corrector for a resistive load An apparatus for substantially eliminating the effects of a nonsinusoidal current from a reactive or nonlinear load as applied to a resistive load requiring an input current that appears to be sinusoidal. If the amplitude of the current source as applied ... | 10/10/1978 |
| 4118112 | Method for reducing power dissipation in tapered resistor devices A tapered resistor device which includes generally a tapered resistive film comprising a semiconducting material or other suitable material with a negative temperature coefficient of resistivity is provided. It is apparent with reference to the curves whi... | 10/03/1978 |
| 4115765 | Autonomous display processor An autonomous processor for displaying on a video tube both text characters and facsimile data. To conserve memory space the facsimile data is stored in compressed form and is decompressed or unfolded in synchronism with the vertical and horizontal deflec... | 09/19/1978 |
| 4112389 | Diode laser with ring reflector A diode laser having an active region which has a section in the shape of a closed loop or ring, with the path length of the loop or ring causing a light wave traveling completely around the loop or ring section from a coupler section of the active region... | 09/05/1978 |
| 4111538 | Projection system of high efficiency There is disclosed a light system for projection of images onto a visual read out surface such as a screen or photo receptor recording device such as a xerographic drum. The projection system employs a nonpoint light source which forms a light beam of non... | 09/05/1978 |
| 4111521 | Semiconductor light reflector/light transmitter A semiconductor device which utilizes interferometric principles and electrical control to provide either light reflection or light transmission or partial light reflection/transmission. In a preferred embodiment, the device includes an input waveguide wh... | 09/05/1978 |
| 4110823 | Soft display word processing system with multiple autonomous processors A distributed function processing system utilizing a conventional microprocessor operated as a text processor in combination with a plurality of other autonomous processing devices arranged to operate in a coherent processing system. One of the autonomous... | 08/29/1978 |
| 4109316 | Method and apparatus for inverting the polarity of an input image formed on a surface of an image recording device Method and apparatus for inverting the polarity of an input image formed on a surface of an image recording device which deforms when illuminated in the presence of an electrostatic field applied thereacross. The image recording device, comprising a layer... | 08/22/1978 |
| 4109310 | Variable field length addressing system having data byte interchange A microprogrammable computer system including a central processing unit having a main memory storing data and a microprogrammed control memory consisting of a plurality of read-only memory chips containing microprograms, provides for various variable fiel... | 08/22/1978 |
| 4109104 | Vocal timing indicator device for use in voice recognition A vocal timing indicator for use in voice recognition systems. The timing indicator provides a visual or audible signal to a user to mark the beginning of the time period in which the user is to speak into the microphone associated with the system, thereb... | 08/22/1978 |
| 4104515 | Consumable credit card A consumable credit card is provided which comprises a recording device that is adapted to receive progressively advancing recording up to a limit at which time the card is consumed and thereafter is discarded. The card is adapted to be inserted into a re... | 08/01/1978 |
| 4101788 | MOS buffer circuit A MOS control circuit for controlling an output signal, said control circuit being coupled to first and second sources of potential. The magnitude or peak-to-peak amplitude of the first source of potential is greater than the magnitude developed by the se... | 07/18/1978 |
| 4099999 | Method of making etched-striped substrate planar laser A method of making a diode laser in which a pump current confining channel is formed on the substrate side of a diode laser prior to growth of the active or recombination region of the diode laser. The current confining channel is formed by providing, by ... | 07/11/1978 |
| 4099071 | Monolithic electronic scanning device A tapered resistor heating element is provided which sequentially heats and actuates in a controlled fashion heat sensitive media. In one embodiment a tapered resistor heating element sequentially heats in a controlled fashion heat sensitive switches. Hea... | 07/04/1978 |
| 4071754 | Beam alignment detector A mechanism is provided for observing laser beam alignment with a start-of-scan detector chip, while the laser beam is being scanned in a horizontal direction. The start-of-scan detector is located on a target panel along with the input ends of a pluralit... | 01/31/1978 |
| 4057807 | Separable liquid droplet instrument and magnetic drivers therefor An ink jet assembly comprises a magnetic driver and a liquid droplet instrument. The driver includes a plurality of magnets, which may be selectively energized. The instrument includes a diaphragm means, which forms an outer wall of each of a plurality of... | 11/08/1977 |
| 4047793 | Polygon scanner with an annular lip A scanning polygon assembly is provided which comprises a plurality of identical facet blocks arranged in abutting relationship on a platform. The platform has an annular lip against which two corners of each block abut so the facets form chords along the... | 09/13/1977 |
| 4036421 | Weighted pinch rolls A mechanism for biasing a plurality of pinch rolls into engagement with a drive roll is provided wherein the biasing force is effected by a weight or weights. The pinch rolls are mounted on a common rotatable shaft, which rotates on supports which indepen... | 07/19/1977 |
| 4032929 | High density linear array ink jet assembly A high density linear array ink jet assembly is provided wherein a multiple chamber unit comprises a chamber housing and at least one flexible diaphragm spanning and sealing the chambers from each other and forming one wall of each chamber. A plurality of... | 06/28/1977 |
| 4024544 | Meniscus dampening drop generator An ink jet includes a meniscus dampening passage, which carries a pressure front timed to arrive within an effective meniscus dampening vicinity of a droplet outlet orifice at substantially the same instant that a droplet leaves the orifice to dampen subs... | 05/17/1977 |
| 4017066 | Set separator A set separator for offsetting sets of sheets of paper is provided. A first set of paddle wheels is provided which, in one position, directs a sheet of paper forwards towards a stop wall and to one side, and in a second position directs the sheet of paper... | 04/12/1977 |
| 4015081 | Multifunction scanning system A scanning system is employed which utilizes an unmodulated beam for reading a document (original size or microfilm) and utilizes a modulated beam for printing an image (original size or a microimage) which beams both originate from the same laser source ... | 03/29/1977 |
| 4013362 | Adjustable forms guide An adjustable forms guide is provided on a xerographic computer printer platen for adjusting the position of a form on the platen to align or register the projection of the form through one optical system onto a photoconductor with data projected through ... | 03/22/1977 |
| 4012585 | Input and output flying spot scanning system A flying spot scanning system is provided which is capable of scanning an unmodulated beam to a reading station for reading a stationary document and a modulated beam to an imaging station for recording an image thereat. The system utilizes optical elemen... | 03/15/1977 |
| 3980406 | Duplex imaging system A duplex copying machine is provided wherein an original document, having images on both sides, is located between a transparent rotatable drum and conveyor belts and is automatically transported thereby to a first image station to expose to a photoconduc... | 09/14/1976 |
| 3978737 | Chain tensioning device A chain tensioning device is provided wherein a spring biased sprocket engages a chain to exert tension thereon. The device includes a mechanism to allow a service person to relieve the tension exerted on the chain by the tensioning device and to inactiva... | 09/07/1976 |
| 3974506 | Scanning system for imaging characters combined with graphic curves A flying spot scanning system is provided which has a separate scanning system for imaging characters onto a recording medium and has a separate x- y galvanometer operated mirror scanning system for imaging a graphic curve onto the recording medium.... | 08/10/1976 |
