Abstract: A method and a fusing apparatus for producing a reduced recovery time period from a low energy-saver mode temperature back up to a high fusing temperature. The fusing apparatus includes a heating member for heating and fusing toner images onto a copy sheet; a temperature sensor mounted relative to the heating member for sensing temperature of the heating member; a source of primary power supply for supplying heating power to the heating member; a source of secondary power supply, that is less in level than the source of primary power supply, for supplying secondary heating power to the heated member; and a controller connected to the temperature sensor, and to the source of primary and the source of secondary power supplies for turning the source of primary and the source of secondary power supplies on and off responsively to the temperature sensor.

Abstract: A registering device for an electrophotographic printing machine. A steerable pair of drive nips is located in the paper path. A lead edge sensor detects when a sheet is within the steerable drive nips. The steerable nips are turned so that the sheet is transported toward a side registration sensor located in the paper path. When the side registration sensor detects the edge of the sheet the actuator causes the steerable nips to be straightened. The sheet may be forwarded to a second, higher accuracy registration device for final registration. The steerable nip device provides a course preregistration device which may utilize inexpensive and non complex components. This device also enables the use of less expensive components in the fine registration device as the range of correction required by the fine registration device can be much narrower due to the preregistration device.

Abstract: A process for the preparation of toner comprising(i) solubilizing an imide based resin in water at pH of from about 10 to about 13 and which solubilizing is accomplished in the presence of nonionic surfactants and anionic surfactants; followed by precipitating the resulting dissolved imide resin into colloidal particles with a size diameter of from about 20 nanometers to about 500 nanometers, and which precipitating is accomplished with a high shearing device operating at a speed of from about 500 to about 2,000 revolutions per minute; acidifying the resulting mixture to a pH of from about 2 to about 4;(ii) preparing a pigment dispersion in water, which dispersion is comprised of a pigment, an oppositely charged ionic surfactant and optionally charge control agent;(iii) shearing (i) and (ii), thereby causing a flocculation of the resin, pigment, surfactants, and optional charge control agent;(iv) heating the resulting flocculent mixture of (iii) with stirring at a temperature of from about 25.degree. C.

Abstract: A process including providing a flexible substantially rectangular sheet having a first major exterior surface opposite and parallel to a second major exterior surface, removing or displacing material from the first major exterior surface adjacent and parallel to a first edge of the sheet to form a new first surface having an elongated, curvilinear "S" shaped profile when viewed in a direction parallel to the first edge, overlapping the new first surface and a second surface adjacent a second edge of the sheet whereby the first new surface contacts the second surface to form a mated surface region, the second surface being adjacent to or part of the second major exterior surface to form the sheet into a loop, the second edge being at an end of the sheet opposite from the first edge, and permanently joining the new first surface to the second surface into a seam to form a seamed belt of this invention.

Abstract: A toner composition comprised of a polyester resin with hydrophobic end groups, pigment, optional wax, optional charge additive, and optional surface additives.

Abstract: An image communication system wherein transmission of an image between an image transmission apparatus and an image reception apparatus which include image output sections having different performances can be performed without making an inquiry for the performance prior to transmission is disclosed. An image is inputted by an image input section and sent to a hierarchization section in the image transmission apparatus. The hierarchization section converts the inputted image into and transmits hierarchized data to a selection section of the image reception apparatus. The selection section extracts only necessary ones of the data transmitted thereto in accordance with the performance of an image output section of the image reception section and then sends the necessary data to the image output section after, if necessary, they are converted into image data. The image output section visualize the image data transmitted thereto from the selection section.

Abstract: A detector array method and apparatus for real time in-situ color control in printers and copiers includes an array for performing a linear matrix transformation on color patch information generated by a printer or copier. A light sensor array detects color components from a series of color test patches and performs a predetermined matrix transformation on the color information to produce a set of control signals for feedback to the printer or copier. In another embodiment, the light sensor array is extended to produce a fully analog neural network processor which is capable of arbitrary mappings of the color information into control signals for use by the printer or copier apparatus. The system is fully programmable, adaptive and, in one embodiment, trainable using backpropagation or other techniques.

Abstract: A homogenizer for a laser irradiation apparatus which provides single-pulse homogeneity by using optical components which result in an interference pitch which is smaller than the thermal diffusion length of the target material. Under this invention, the non-uniform heat distribution from a laser beam can be averaged out through thermal diffusion, achieving single-pulse homogeneity.

Abstract: A toner for developing an electrostatic latent image, which comprises toner particles and treated titanium oxide fine particles obtained by coating titanium oxide fine particles with 0.1 to 2.0% by weight, in terms of Al.sub.2 O.sub.3, of aluminum or Al.sub.2 O.sub.3 and further subjecting the coated particles to surface treatment with a treating agent.

Abstract: A system for logically identifying document elements from a document includes an input port for inputting a signal representing the document image, a computer having a document structural model, a document white region extraction system that extracts major white regions separating and within document elements in the input document image, a major white region selecting device and a column string selection device that generate matching column string of document elements that match the extracted major white regions in a column, a column expression comparison device that selects the best matching column string and a logical tagging device that logically tags and then extracts the document elements in the document image using the best matching column string.

Abstract: A photosensitive body for electrophotography having improved properties in the charging characteristics, photosensitivity, and stability in repeated use. The photosensitive body for electrophotography comprises a photoconductive layer formed on a conductive support through an undercoat layer, the undercoat layer containing at least one polyester compound having repeated units represented by the following general formula (I): ##STR1## wherein A and B each independently represents a divalent aliphatic hydrocarbon or aromatic hydrocarbon which is optionally substituted, at least one of A and B being selected from the group consisting of specific divalent groups, and n is 10-10,000.

Abstract: An electronic circuit package in which several high voltage components are packaged along with low voltage components using standard circuit boards and minimizing the space needed for the entire assembly. A miniature circuit board, constructed of standard circuit board material, is used to mount several electronic components, some of which require high voltages. To meet isolation requirements, requiring a dielectric strength more than that provided by the board itself, between the high and low voltage nodes the circuit board incorporates slots or other cut out shapes in the board. The slots or other cut out shapes provide two functions. The first use for the slots or other cut out shapes is to prevent charge migration on the surface of the board between high and low voltage nodes. This is accomplished by placing the slots or other cut out shapes between high and low voltage nodes. The circuit board is then encapsulated within a potting material.

Abstract: A process for fabricating an electrophotographic imaging member including providing a supporting substrate, forming a charge generating layer on the substrate, applying a coating composition to the charge generating layer, the coating composition including a film forming charge transporting polymer dissolved in methylene chloride and a solvent selected from the group consisting of 1,2 dichloroethane, 1,1,2 trichloroethane or mixtures thereof, the charge transporting polymer having a backbone comprising active arylamine moieties along which charge is transported, and drying the coating to form a charge transporting layer.

Abstract: An ink composition comprised of a colorant and a vehicle component, and which vehicle component is comprised of the condensation product of an organic acid and an amino alcohol.

Abstract: An ink jet printhead has improved resistance to the corrosive effects of ink by coating ink sensitive areas with a photo-imageable benzocyclobutene (BCB) polymer. The BCB can be patterned so as to provide a protective coating over selected areas while leaving other areas uncoated. In one described embodiment, a thermal ink jet printer is formed by bonding together a channel plate and a heater plate. Resistors and electrical connections are formed in the surface of the heater plate. A BCB layer is formed so as to overlie the heater plate to protect the electrical elements while providing pit structure for the heater and for ink flow bypass.

Abstract: An electroforming process and apparatus for forming an electroform with a roughened surface. The present invention roughens the surface of the mandrel using a sandblasting device in the center region of the mandrel allowing the two end regions to remain smooth. The intersection of the roughened center region and each of the two end regions form a step. This step on either side of the roughened center region facilitates sealing while the roughened center region enables toner distribution. The electroform created using the step roughened mandrel surface is separated from the mandrel without destroying the mandrel. The step roughened mandrel can then be reused to create another electroform with a roughened surface.

Abstract: An apparatus and method for registering and deskewing a sheet along a paper path. A pair of independently driven selectively actuable nips are used to drive a sheet transverse to a paper path direction until the edge of a sheet is registered laterally and in skew. The transverse nips are then deactivated and a drive nip moves the sheet in a process direction along the paper path. A first transport sensor senses the lead edge of a sheet, a second sensor is used to also detect the lead edge of a sheet within a certain distance from the detection by the first sensor. The transport drive nip can then be adjusted based on the transport time between the first transport sensor and the second transport sensor so that the sheet arrives at a registration sensor at the prescribed time. This apparatus and method allows the use of simple point type sensors as opposed to more complex and expensive sensor arrays.

Abstract: A multiple wavelength surface emitting laser has a first and second broad bandwidth distributed Bragg reflector (DBR) which reflect light at multiple wavelengths. The surface emitting laser structure comprises at least two cavities with each cavity containing one or more active layers for respectively emitting light at different wavelengths. In a preferred embodiment for a dual wavelength surface emitting laser, a first cavity contains a first active layer for emitting light of a first wavelength and a second cavity contains only a second active layers and emits only light of the second longer wavelength. The second layer has been eliminated in the first cavity and the first active layer has been eliminated in the second cavity by layer intermixing before completing the epitaxial growth.

Abstract: A dynamic "mailboxing" unit and system for separating by users the sheet outputs of various users of a shared users printer (including facsimile receivers, copiers or combination units). It provides for stacking the sheets sequentially outputted from the printer in separate job sets into one or more temporarily and variably assigned "mailboxes" of a "mailboxing" job sowing accessory unit. The "mailboxing" unit has locking "privacy doors" for restricting access to at least some of the mailbox bins, with electrical unlocking of selected bin doors in response to entry of a user access code. When the door is opened, an access handle is visible and the user can pull the handle which causes the job print sets to be moved to the door opening for easy removal. A second embodiment has the removal handle which extends through the door and when released and pulled by the user causes the door to open and the sets to be moved to the opening.

Abstract: A process for the preparation of polycarbonates which comprises the reaction of a bisphenol, an arylcarbonate and a catalyst, which reaction is accomplished by heating said bisphenol, said arylcarbonate and said catalyst, in the presence of supercritical carbon dioxide, and subsequently extracting byproducts with supercritical carbon dioxide.