Abstract: A continuous web substrate duplex printing system which can utilize a single otherwise conventional or existing xerographic, print engine (normally printing conventional cut sheet substrates) without substantial structural modification, and without requiring plural print engines on opposite sides of the web. The continuous web may be fed uncut into the print engine to two transfer stations alternatingly engaging a single endless belt imaging surface, which two alternating transfer stations are in line with one another in the direction of movement of the imaging surface, with web inversion and a controlled expandable/contractible web loop in between those two transfer stations, for respectively transferring the page print images onto the two respective sides of the continuous web in sequential batches of plural first and second side images, in the proper page sequence and positions and without any spaces between page images along the web.

Abstract: A process for the preparation of toner comprising(i) blending (a) a colorant dispersion containing a first ionic surfactant with (b) a latex emulsion comprised of an aqueous dispersion of core-shell polymer particles with a crosslinked polymer core and a linear polymer shell, and optional nonionic surfactant and a second ionic surfactant with a charge polarity opposite to that of said first ionic surfactant in said colorant dispersion;(ii) heating the resulting mixture at about below the glass transition temperature (Tg) of the linear latex shell polymer to form aggregates; and(iii) subsequently heating said aggregates about above the Tg of the linear latex shell polymer to effect coalescence and fusion of said aggregates.

Abstract: Original source verifying data defining a first source verifying image are stored in memory. The first source verifying image can be produced by a human making marks by hand in a field of a form, which can then be provided by a scanner or a facsimile transmission through image input circuitry. If a second source verifying image is received that is the same as the first source verifying image, an operation is performed that would not be performed if the images were not the same, such as an operation accessing a related item of data. For example, the first source verifying image can be received with a document image, and data defining the document image and the original source verifying data can be stored so that a source verifying image that is the same as the first source verifying image must be received before an operation can access the document data and provide it to image output circuitry for printing or facsimile transmission.

Abstract: A method of halftoning a digitized image is described, in which a "stoclustic" screen is used. The halftone outputs produced by stochastically clustered pixel screens of the present invention (also referred to herein as "stoclustic" screens) are clustered about arbitrarily or otherwise specified centers. According to one embodiment of the present invention, one step in the present invention requires that the locations of the set of stochastically distributed black and white cluster centers must be determined. Thereafter, according to block 104, a dot or pixel growth positioning sequence for adding pixels to the cluster about the selected cluster centers must be established.

Abstract: An encoding/compression technique using a combination of predictive coding and run length encoding allows for efficient compression of images produced by error diffusion.

Abstract: A device for storing a supply of particles for use in one of a first developer unit of a first electrophotographic printing machine and a second developer unit of a second electrophotographic printing machine is provided. The device is cooperable one of a first mechanism of the first developer unit of the first electrophotographic printing machine and a second mechanism of the second developer unit of a second electrophotographic printing machine to feed the particles from the device into one of the first developer unit and the second developer unit. The first mechanism includes a first mechanism feature and the second mechanism includes a second mechanism feature. The device includes a container defining a chamber for storing particles therein. The container defines an aperture therein. The first mechanism further includes a first member removably connectable to the container. The first member includes a first member feature.

Abstract: A contact cleaner roll cleaning system including a frame to support the system relative to a movable web having a first major surface and a second major surface on opposite sides of the web, at least a first rotatable contact cleaner roll supported on the frame disposed for rolling contact with the first major surface, an activatable web transporting device adapted to transport or interrupt the transport of the web past the first rotatable contact cleaner roll, and a first indexing device adapted to roll the first rotatable contact cleaner roll against the first major surface in a first direction while the transport of the web past the first rotatable contact cleaner roll is interrupted This system is used to clean coated and uncoated webs.

Abstract: When information held in an information holding section is distributed from an information distribution section to another information intervention system, a distribution sensing section senses the information distribution and records a distribution history thereof in a distribution history holding section. When an instruction for tracing information is given,a history collection section reads out the distribution history related to the information to be traced from the distribution history holding section, detects the distribution destination of the information, and instructs the information intervention system of the distribution destination to trace the information. History information is collected from the instructed information intervention system and is stored in a collected history holding section. The collected history information is analyzed by a tracing analysis section. For example, distribution routes, etc., are displayed on a tracing result display section.

Abstract: An electrophotographic photoreceptor comprising a conductive substrate having thereon a photosensitive layer, the photosensitive layer containing a hydroxymetal or hydroxysilicon phthalocyanine pigment represented by formula (I) as a charge generating material, the phthalocyanine pigment having been treated with an orcanometallic compound having a hydrolyzable functional group or a hydrolysis product thereof: ##STR1## wherein Me represents A, Ga, In, Si, Ge or Sn; X representsH, C, Br or I; m represents an integer of from I to 4; and n represents 1 where Me is A, Ga or In, or 2 where Me is Si, Ge or Sn.

Abstract: An ink supply device for supplying ink to a print head, the device containing a main ink chamber, an intermediate ink chamber, a first meniscus forming member with pores between the main and intermediate ink chambers and a joint portion between the first meniscus forming member and the print head. The ink supply device holds ink by negative pressure maintained therein and extends the efficiency of the ink supply device. Preferably, the intermediate ink chamber is hermetically sealed.

Abstract: A process for preparing mono-iodinated aromatic compound is disclosed, wherein the process comprises iodinating an aromatic compound, at least two portions of which can be iodinated, in a solvent mixture of water and acetic acid using iodic acid or periodic acid and iodine, wherein the iodic acid or periodic acid and iodine, and the aromatic compound are added in an amount so that the ratio of the atom number of iodine atom to the molecular number of the aromatic compound is less than 1.The process provides a mono-iodinated aromatic compound having high purity in a high yield.

Abstract: A method of redeeming for a seller electronic payments generated by and received from a customer using a master key unknown to the seller. In anticipation of making electronic payments, a customer sends a bank the master key that he will use to generate electronic payments. The bank stores the master key. Later, the bank receives from the seller a redemption request including a seller identifier, a first value of a payment index, and an electronic payment associated with the first value of the payment index. The bank authenticates the electronic payment by comparing the electronic payment to a hash of a string including the master key, the seller identifier, and the first value of the payment index. If the electronic payment is authenticated, the bank determines an amount due to the seller and credits that amount to the seller.

Abstract: The electronic document database searching system displays search results using a display attribute that corresponds to the attribute of the string in each original electronic document.

Abstract: To form an exposed image with striking contrast on photosensitive material and form a high definition and high quality image, a first beam modulated according to an image signal and a second beam modulated according to an inverted image signal generated by inverting this image signal with smaller deelectrification effect than the first beam are synthesized on the photosensitive material.

Abstract: Disclosed is an ink composition which comprises (a) water, (b) a colorant, and (c) a material of the formula ?(F.sub.3 C(F.sub.2 C).sub.n CH.dbd.CHCH.sub.2 OCH(OH)CH.sub.2).sub.2 NCH.sub.2 COO.sup.- !?X.sup.+ !, wherein X is a cation and n is an integer of from about 3 to about 20. Also disclosed are processes for preparing the ink composition and ink jet printing processes with the ink composition.

Abstract: Image fix level and Input Output Terminal (IOT) faults are minimized. The foregoing are effected by reducing fuser roll temperature sag or droop which can be a problem during the initial portion of a copy run. A heated fuser member is operated at a higher power level during the initial portion of a print cycle. This is effected using an existing controller without modifying the controller's hardware. The foregoing is accomplished by detecting voltages values applied to the fuser member, storing these values corresponding to fuser operating parameters in a LUT, detecting elapsed time from the start of a print cycle, using the operating parameters corresponding to the detected voltage during a portion of the print cycle, and determining the difference between a detected voltage and a predetermined voltage value and using the fusing operating parameter corresponding to this difference during the initial portion of the print cycle in accordance with elapsed time.

Abstract: Disclosed is an ink composition which comprises water, a colorant, and an additive selected from imidazolium formate, imidazolium phosphite, and mixtures thereof. Another embodiment of the invention includes a process which entails incorporating an ink composition of the present invention into an ink jet printing apparatus and causing droplets of the ink composition to be ejected in an imagewise pattern onto a substrate. In one preferred embodiment, the printing apparatus employs a thermal ink jet process wherein the ink in the nozzles is selectively heated in an imagewise pattern, thereby causing droplets of the ink to be ejected in imagewise pattern. In another preferred embodiment, the ink is used in a printing process which employs microwave drying of the printed image.

Abstract: An enhancement to the standard JPEG image data compression technique includes a step of recording the length of each string of bits corresponding to each block of pixels in the original image at the time of compression. The list of lengths of each string of bits in the compressed image data is retained as an "encoding cost map" or ECM. The ECM, which is considerably smaller than the compressed image data, can be transmitted or retained in memory separate from the compressed image data along with some other accompanying information and is used as a "key" for editing or segmentation of the compressed image data. The ECM, in combination with a map of DC components of the compressed image, can also be used for substituting background portions of the image with blocks of pure white data, in order to compress certain types of images even further.

Abstract: An output controlling device for reducing a processing time and substantially reducing erroneous determinations. In an image recording apparatus or the like, when a control language describing input data sent from a higher level apparatus is determined, determining rules set for respective control languages are consecutively applied. Since an optimum determining rule can be applied with respect to each control language, it is possible to simultaneously attain a reduction in the processing time and a lowering of the possibility of erroneous determination as compared with a case where the same determining rule is applied uniformly. In addition, if command groups are classified, and different determining rules are used for respective groups, the case is equivalent to a case where a plurality of determining rules are applied with respect to each control language, so that a further reduction in the processing time and a further lowering of the possibility of erroneous determination can be attained.

Abstract: A modulator for modifying a scanning beam to project a halftone image onto a photosensitive surface including a sensor providing sensor signals in relation to the speed of the photosensitive surface, a converter responsive to the speed of the photosensitive surface to provide a signal representing an image quality factor for altering the modulation of the beam of the scanning system to adjust the projected image in relation to the speed of the photosensitive surface, the projected image including banding errors, and a random signal generator responsive to the sensor signals for generating random signals, the random signals altering the modulation of the beam of the scanning system to counter the banding errors on the projected image.