Abstract: A Release Agent Management (RAM) system for a heat and pressure fuser apparatus utilized for fixing color toner images on substrates such as plain paper and transparency material such as Mylar.TM.. A donor/metering roll arrangement is provided with two oil metering blades, one of which is operative during two modes of operation and the other of which is operative during only one of the two modes of operation. During one mode of operation when color toner images are formed on a substrate such as plain paper, only one of the two blades is utilized. During a second mode of operation when color toner images are created on a transparent substrate such as Mylar.TM., both blades engage the surface of the metering roll so that a lesser amount of oil is ultimately conveyed to the surface of the heated fuser roll.

Abstract: A paper conditioner to control image dependent curl which uses one or more counter-rotating transfer rollers which are initially spaced from their respective back-up rollers in the intercopy gap, and which come together as the lead edge enters the nip area, and separates when the trail edge is about to pass. This permits the rollers to have a less demanding runout tolerance by bringing the rollers together when the sheet is in the nip, and then articulating the rollers apart in the intercopy gap.

Abstract: A novel image development method and apparatus are disclosed, whereby image-wise charging of a toner layer is accomplished by induce air breakdown electrical discharge such that free mobile ions are introduced in the vicinity of an electrostatic latent image coated with a layer of developing material. The latent image causes the free mobile ions to flow in an image-wise ion stream corresponding to the latent image, which, in turn, leads to image-wise charging of the toner layer, such that the toner layer itself becomes the latent image carrier. The latent image carrying toner layer is subsequently developed and transferred to a copy substrate to produce an output document.

Abstract: A printing machine and method for efficiently forming toner images such that a quantity of unused toner applied to a photoreceptor of the machine is significantly diminished are provided.

Abstract: An associative storage includes: a plurality of storage elements having at least one internal signal outputting element for outputting an internal outputting signal toward another storage element and at least one internal signal inputting element for receiving an internal inputting signal outputted form another storage element, a learning signal inputting element for each respective storage element for inputting a learning signal thereto, a recalling signal inputting element for each respective storage element for inputting a recalling signal thereto, an internal state switching element for each respective storage element for turning an internal state of the respective storage element to an ON state when either the learning signal or the recalling signal is inputted thereto and/or the sum of the internal inputting signals exceeds a threshold value while the internal state is kept in an OFF state, wherein the internal state switching element outputs the internal signal towards another storage element when the

Abstract: Disclosed is a process which comprises (a) applying to a recording sheet a marking material comprising a Raman-detectable component which, when irradiated with monochromatic radiation, exhibits a detectable Raman spectrum, thereby forming a mark on the recording sheet; (b) irradiating the mark on the recording sheet with monochromatic radiation; and (c) measuring the Raman spectrum of radiation scattered from the mark when the mark is irradiated with monochromatic radiation.

Abstract: A development system which includes a dual auger assembly, mounted in a housing, for mixing developer materials in which a trickle port is between the dual auger assembly at an end of the housing which enables combining the cleaner waste toner and trickle waste in a single without the need of an additional auger.

Abstract: A hyperacuity printing system includes a halftoner (20) which converts pixel intensity values into multi-bit gray values which drive a laser diode (62). The halftoner (20) includes a halftoner memory (22), a phase error look-up table (50), and a modulator (60). The halftoner memory (22) stores a pregenerated halftone dot pattern as a plurality of halftone dot planes or cells (24), each representing an intensity value. The halftoner memory (22) is addressed by the integer portion of a screen coordinate (x,y) and the intensity value, and outputs spatial coordinates (r, .theta.) to an edge of the halftone dot nearest the screen coordinate. The fractional portion (xFRACT, yFRACT) of the screen coordinate (x,y) is combined with the outputted spatial coordinates (r,.theta.) to provide corrected coordinates (r.sub.c,.theta.). The corrected coordinates (r.sub.c,.theta.) address a modulator drive function (56) which generates the multi-bit gray value used to drive the modulator (60).

Abstract: A sensor system for measuring physical properties of a sheet. In one embodiment, the sensor system measures paper curl and thickness using two sensors, each of which includes a member, a base, and measurement circuit. The two members are positioned in opposition to each other and both contact the sheet as it passes between them. Each member is coupled to a base, which includes a measurement circuit. Each measurement circuit measures the displacement of its associated member. In another embodiment, the sensor system measures stiffness and curl using two pairs of opposed sensors. In yet another embodiment, the sensor system measures thermal diffusivity of a sheet of paper using three sensors, one of which includes a heater for heating the sheet of paper and the other two sensors include thermocouples in contact with the sheet of paper for sensing the heat of the paper.

Abstract: A bottom sheet feeding system for feeding individual image substrate sheets for reproduction apparatus out from under a stack of such sheets by intermittently feeding the bottom sheet out from under the overlying stack of sheets in a sheet stacking tray with a bottom sheet feeder, which may be electrostatic, while that stack of sheets is intermittently at least partially levitated relative to the bottom sheet to substantially reduce the gravitational force of the overlying stack of sheets normally bearing down on the bottom sheet to resist the separation and feeding of the bottom sheet out from under the rest of the stack. This intermittent stack levitation may be accomplished by appropriate cyclical transducer system forces applied to the bottom of the stacking tray at a frequency coordinated with intermittent feeding of the bottom sheet out from under the stack.

Abstract: A programmable direction control scheme for an efficiently wired array of like integrated circuit chips which is capable of producing a rightward or leftward sequence of designated interaction is described. The member chips are incorporated into a system by connecting their existing addressing, data, and clock pads onto a mutual bus. The chips are additionally chained together by their qualification pads so that they may be individually designated for interaction with the system, by way of sequential token passing. A direction control bit within a programmable configuration register is included on each member chip in lieu of a dedicated input. The configuration register is given free access irrespective of the designation status of its incorporating chip, and thus the direction control bits of all of the member chips of the array may be expediently programmed even when the elsewise process of sequencing through the chips would be paradoxically self obstructed by an initial directional chaos condition.

Abstract: A method of printing and a printing medium containing a base paper and having a smoothness of less than or equal to about 110 Hagerty units, a formation index of at least about 40 and a caliper and charge acceptance sufficient to minimize or substantially or totally eliminate mottle.

Abstract: When an instruction sequence is divided into a plurality of subsequences and executed by a plurality of painting instruction operators, an effective parallel schedule can be drawn up even if there may exist image elements overlapped one another, thus enabling high-speed painting instruction to be executed. There are provided a control information configuror for giving a directed branch to a subsequence having order dependence upon receipt of subsequences divided by a sequence divider and for excluding, when the subsequence with the branch given has another subsequence having order dependence, the subsequence from the determination targets for order dependence; and a scheduler for processing, when on allocating subsequences to a painting instruction operator at the execution target, the subsequences to be allocated are dependent upon subsequences to be executed outside of the allocatee, after the processing of subsequences at the host is awaited.

Abstract: An electrostatographic imaging member including an anti-curl layer, a supporting substrate having an electrically conductive layer, at least one imaging layer, an optional ground strip layer and an optional overcoating layer, the anti-curl layer including a film forming polymer binder selected from the group consisting ofa polymer represented by the following structural formula: ##STR1## wherein m is an integer between about 100 and about 800 and X is selected from the group consisting of a halogen atom, a linear substituted or unsubstituted alkyl group containing 1 to 6 carbon atoms, and a substituted or unsubstituted cyclohexyl ring, anda polymer represented by the following structural formula: ##STR2## wherein p is an integer between about 100 and about 800 and X is selected from the group consisting of a halogen atom, a linear substituted or unsubstituted alkyl group containing 1 to 6 carbon atoms, and a substituted or unsubstituted cyclohexyl ring, andblends of these polymers,a copolyester adhesion promo

Abstract: Disclosed is a toner for developing an electrostatic latent image comprising a binding resin and a colorant, wherein the toner contains from 0.1% to 40% by weight of wax, the amount of wax disposed on the surface of the toner is from 1% to 10% by weight, and the number-average dispersion diameter of the wax is from 0.1 to 2 .mu.m. The toner is produced by a process comprising a step of dissolving or dispersing each of the raw materials of the resin, colorant, and wax into an organic solvent to form an oil-phase component, and a step of granulating the oil-phase component in an aqueous solvent, or a step of granulating the oil-phase component in an aqueous solvent and a step of suspension-polymerizing the particles formed in the granulation step. It is desirable that the wax be finely dispersed beforehand and that the wax be flake-shaped.

Abstract: A drive member for use in a printing machine is provided. The drive member cooperates with a drive shaft including a drive shaft feature. The drive shaft is adapted to transfer torque therebetween. The drive member cooperates with a torque transferring component to transfer torque therebetween. The drive member includes a body. The body defines an aperture therein. The body defines an axis of rotation thereof. The drive member further includes a torque transferring feature associated with the body for transferring torque between the body and the torque transferring component and a torque transmitting feature extending from the body in the direction of the axis, at least a portion of the torque transmitting feature having an arcuate periphery.

Abstract: A method to provide a highly intelligent, automated diagnostic system that identifies the need to replace specific parts to minimize machine downtime rather than require extensive service troubleshooting. In particular, a systematic, logical test analysis scheme to assess machine operation from a simple sensor system and to be able to pinpoint parts and components needing replacement is provided by a series of first level of tests by the control to monitor components for receiving a first level of data and by a series of second level of tests by the control to monitor components for receiving a second level of data. Each of the first level tests and first level data is capable of identifying a first level of part failure independent of any other test. Each of the second level tests and second level data is a combination of first level tests and first level data or a combination of a first level test and first level data and a third level test and third level data.

Abstract: A method adjusting variations in toner concentration in a printing machine by first determining a pixel count of documents to be imaged. The system then provides two test targets on the imaging surface in the image area, one of the test targets having a relatively low reflectance and the other test target having a medium reflectance. The reflectance value of the test targets is sensed and the difference between the reflectance values is calculated and compared to a reference value to provide an error value. The system then to the error value and the pixel count of documents to be imaged to determine a time period of dispense for a toner dispenser.

Abstract: The present invention provides a recording head for electrostatic recording having a plurality of lower electrodes and a plurality of upper electrodes constituting a matrix with an insulating layer interposed therebetween and a space for ion generation where corona discharge is caused by applying a voltage between the lower and upper electrodes characterized in that a plurality of short partial recording heads are formed by integrally firing the lower electrodes, insulating layer and upper electrodes and are joined to provide a recording head of a desired length.

Abstract: A fault-tolerant self-replacing xerographic light emitter array includes circuitry for operating an array of organic light emitting diodes (OLEDs). The light emitter array provides imaging from a single row of imagers which operate at high brightness and high current. The emitter area is extended by having multiple rows of emitters. When one or more of the pixels of a currently-selected row burns out or decays to a level insufficient for imaging, a new row is activated and imaging continues. This is possible because the emitter rows are closely spaced and share an optical lens wide enough to collect light with adequate throughput for all rows. This redundancy permits imaging to continue without adjusting or replacing any mechanical parts of the emitter array. In addition, because of the fault-tolerant design, a single bad row or pixel does not render the device unusable. This technique is applicable to a variety of emitters or light valves, but is particularly suited to inexpensive OLEDs.