Abstract: A ferrofluid comprising an aqueous suspension of an unsilanated or silanated nanocomposite comprised of Fe.sub.2 O.sub.3 nanoparticles and an ionic exchange resin, wherein the ferrofluid has a high magnetization moment of about 20 to about 40 emu/gram.

Abstract: Uniformity light output of an LED printbar is achieved by a technique which senses the operational on time of each LED. When the on time difference between the LED with the longest on time and the LED with the shortest on time exceeds a predetermined value, the outputs of at least some LEDs comprising the printbar are compensated for to normalize their light output. This normalization is achieved via a drive circuit which drives each LED based upon correction data, and by determining an update of the correction data based upon the difference between the on time of individual LEDs. The correction data is determined when the difference between the on time of the LED with the longest on time and the on time of the LED with the shortest on time exceeds a predetermined maximum difference.

Abstract: There is provided a technique for multi-mode printing of a job in a printing machine with a memory section communicating with a controller in which the controller determines whether the job is to be printed in a first print out time minimization mode or a job cost saving mode. In response to determining that the job is to be printed in the first print out time minimization mode, commencing production of the first print, with a print subsystem, about as soon as image data corresponding with a portion of the first print is buffered in the memory section so that the first print is delivered to the output area in a minimum amount of time; and, in response to determining that the job is to be printed in the job cost saving mode, commencing production, with the print subsystem, after image data corresponding with a selected plurality of prints has been buffered in the memory section so that cost attributable to dead cycle time in the print subsystem is minimized.

Abstract: Font attributes of characters or letters are estimated by an optical character recognition system using character, run or stroke-based techniques with or without character identification information.

Abstract: An apparatus that controls impact noise of a solenoid by energy dissipation through both resilient and pneumatic devices. This is achieved by providing a device between the plunger of the solenoid and a machine member. The device includes a predetermined number of orifices which are of different sizes and placed at different locations. This forms an air metering system and controls the stiffness of the device for maximum impact noise attenuation.

Abstract: An ink composition comprised of a colorant and a bisamide with a viscosity of from about 1 centipoise to about 20 centipoise at a temperature of from about 125.degree. C. to about 185.degree. C., and which bisamide is of the formula ##STR1## wherein R is an alkyl of from about 2 to about 30 carbon atoms or aryl; R' is an alkylene with from about 2 to about 30 carbon atoms, or R' is a polyalkyleneoxide with from about 2 to about 30 carbon atoms.

Abstract: Toners comprised of a mixture of a cyan toner, a magenta toner, a yellow toner, and an optional black toner, each of said toners being comprised of resin and pigment, and wherein the pigment for the cyan toner is a .beta. type copper phthalocyanine, the pigment for the magenta toner is a quinacridone, the pigment for the yellow toner is a diazo benzidine, and the pigment for the black toner is carbon black.

Abstract: An electrophotographic printing machine, wherein an electrostatic latent image recorded on a photoconductive member is developed with toner to form a visible image thereof, wherein the improvement includes an apparatus for alleviating toner contamination of the electrophotographic printing machine while maintaining high quality visible images. The apparatus includes a first housing defining a chamber storing a supply of toner of a first color; the first housing including a first toner donor member spaced a first predetermined spacing from the surface and being adapted to transport toner of the first color to a region opposed from the surface, and a second toner donor member spaced a second predetermined spacing from the surface and being adapted to transport toner of the first color to the region opposed from the surface; and wherein the first predetermined spacing is substantially greater than the second predetermined spacing.

Abstract: An apparatus and method for retracting the cleaner from an imaging surface and preventing toner leakage. An apparatus and method that describes a DESB (i.e. dual electrostatic brush) cleaner in a multi-pass operation that not only has to clean the toner from the photoreceptor, but has to retract from the photoreceptor. The two brushes pivot about two defined pivot points in the cleaner housing during the retraction cycle to disengage from the photoreceptor during multi-pass operations. The first brush is pivoted up and the second brush is pivoted down. A further disclosure is the apparatus and method of using thin sliding and flexible plastic seals for a dual ESB that has moving (e.g. camming in and out) housings. The seals prevent leakage of the toner particles from the cleaner housing.

Abstract: An improved window managing system which displays and manages a plurality of windows on a display comprises window identifier list storage which stores a window identifier list having window identifiers designated by the user from among all displayed windows in the window system. In essence, the identifier list is a limited subset of all opened windows currently operating on the window system. In response to each depression of a key on the keyboard, a window is sequentially selected from the window identifier list.

Abstract: An improved back cut method is provided in a dicing procedure for separating a plurality of printheads formed in a silicon wafer. The wafer has alignment fiducial marks formed within a composite wafer. Infrared light is directed into the wafer and is reflected back through the wafer from the fiducial marks. The reflected light is detected by a CCD camera mounted on a dicing saw. The fiducial coordinates are stored in memory and displayed so that the dicing saw can be aligned with regard to the alignment marks. A back cut operation is enabled so that the saw partially cuts through the composite wafer. A subsequent dicing step separates individual printheads from the wafer.

Abstract: A job listing section displays four jobs of highest ranks in an output processing order among jobs currently stored. A window L1 indicates that a job shown therein is in a state of "printing" and windows L2-L4 indicate that jobs shown therein are in an output wait state. To check detailed settings of each job, an operator selects one of the jobs displayed on the job listing section by pressing the corresponding portion with a finger, whereby the selected job is reverse-displayed to inform the operator of the job selection. Detailed settings of the selected job are displayed on a job setting display section (pop-up window).

Abstract: An image character recognition process comprising: forming an image in a predetermined size and predetermined shape on a receiver member with a marking composition containing a superparamagnetic component; detecting the predetermined size and predetermined shape of the formed image by placing the resulting image bearing receiver member in a magnetic sensing field comprising at least one magnetic sensor and forming a magnetic size and magnetic shape profile map of the detected image; and recognizing the detected image by comparing the magnetic size and magnetic shape profile map of the formed image with reference magnetic profile image maps.

Abstract: A haloceramic material having integral, interpenetrating networks of haloelastomer, metal oxide, and optionally polyorganosiloxane forms highly advantageous seals such as gaskets, tapes, diaphragms, bearing, o-rings and the like. The haloceramer seals properties include a combination of thermal stability, chemical inertness and flexibility.

Abstract: A table recognition apparatus for recognizing a table image wherein coexist characters and ruled lines. The apparatus comprises a character/ruled line separating part for separating characters from ruled lines in the table image; a character block extracting part for extracting character blocks from the character image separated by the character/ruled line separating part; and a character block extending part for extending the character blocks extracted by the character block extracting part in such a manner that the edges of the character blocks are aligned according to the positional relations between the blocks.

Abstract: Semiconductor chips, such as photosensor arrays for a full-page-width scanner or printhead chips for a full-page-width ink-jet printer, are mounted on a substrate to maintain reasonably consistent spacing among adjacent chips. To remove a defective chip from the array, the substrate is urged evenly against a work surface defining a convex bow. Alternately, back-cuts are provided along abutting edges of the chips, and the silicon around these back-cuts can be sawed away to space defective chips from neighboring good chips. By increasing the spacing of a defective chip from neighboring chips, the defective chip can be removed while minimizing the risk of damage to neighboring chips. Also, batches of chips can be originally manufactured on a single wafer as either "regular" chips or "replacement" chips, with the replacement chips being slightly shorter in a critical dimension.

Abstract: A processing system for processing electronic images defined in terms of image signals, each image signal representing density at a discrete position within the electronic image, and quantizing image signals defined at "c" gray levels for use in a device requiring image signals defined at "d" levels, where "d" may be less than or equal to "c", the system including an image input receiving at least a portion of the electronic image as input signals; an error adding circuit, adding error signals determined from any previous thresholding processing to the input signals to generate corrected input signals; a thresholding processor, receiving corrected image signals defined at "c" levels, and quantizing the corrected image signals to "d" levels, by comparison to at least one threshold signal and outputting the corrected image signals at "d" levels as output signals; an image output, outputting output signals defined at "d" levels; a differencing circuit, generating a difference signal representative of the differe

Abstract: An electrostatographic imaging member assembly including a hollow cylindrical electrostatographic imaging member, the member including a substrate, an exterior imaging surface, an interior back surface, a first end and a second end, a rigid cylindrical core support member located within the interior of and coaxially aligned with the cylindrical electrostatographic imaging member, the cylindrical core support member extending from at least the first end to the second end of the imaging member and having an outer surface spaced from the interior back surface of the hollow cylindrical photoreceptor and at least one preformed resilient compressible sleeve under compression between the back surface of the imaging member and outer surface of the cylindrical core support, the compression being sufficient to render the electrostatographic imaging member substantially rigid and substantially free from distortion under electrostatographic image cycling conditions.

Abstract: Coated sheets or substrates such as paper, opaque MYLAR, TESLIN or the like are utilized in the creation of simulated, photographic-quality prints formed using non photographic imaging procedures such as xerography and ink jet. A first substrate which is transparent has a reverse reading image formed thereon. Such an image may be formed using conventional color xerography. A second substrate having a right reading image containing different information from the first substrate is adhered to the imaged side of first substrate. The foregoing results in a simulated photographic-quality print which when viewed through the non-imaged side of the transparent substrate contains all right reading information.