Abstract: Areas of a predetermined gray-scale in a desired image are printed on a sheet by a linear array of ink-jet ejectors. The individual ejectors are operated according to a probability function which controls the frequency of a random activation of the ejectors as the sheet moves past the ejectors. The frequency of activation is a function of the desired gray-scale of the area being printed. The resulting spots on the sheet are distributed in uniform lines in one dimension and randomly in another dimension.

Abstract: Disclosed is a process for forming images which comprises generating an electrostatic image on an imaging member, developing the electrostatic image with a toner, optionally transferring the developed toner image from the imaging member to a substrate, applying to the developed toner image a curable liquid in which the toner is at least partially soluble, and curing the liquid to a solid.

Abstract: Workspaces provided by an object-based user interface appear to share windows and other display objects. Each workspace's data structure includes, for each window in that workspace, a linking data structure called a placement which links to the display system object which provides that window, which may be a display system object in a preexisting window system. The placement also contains display characteristics of the window when displayed in that workspace, such as position and size. Therefore, a display system object can be linked to several workspaces by a placement in each of the workspaces' data structures, and the window it provides to each of those workspaces can have unique display characteristics. The display system object can operate continuously despite switching between one workspace and another, and the windows it provides in successive workspaces can share features so that they appear to the user to be the same window or versions of the same window.

Abstract: An image forming apparatus and method for interlace scanning plural light beams by deflecting the plural beams with a rotating polygon onto a recording medium wherein the spacing between adjacent beams hold the relation ##EQU1## wherein I is an interlace factor equal to the number of reference scans between adjacent beams from a single facet of the polygon on the photoreceptor. The photoreceptor velocity is V.sub.o, w is the polygon angular velocity, f is a number of facets per revolution of the polygon, Q is the number of beams and B is the beam spacing.

Abstract: A toner image is transferred from an electrostatographic imaging member to an image receiving substrate. A biased transfer member in the form of a roller or a belt forms a nip with the imaging member. A compliant intermediate transport member passes through the nip for receiving a toner image from the imaging member. The intermediate transport member is preferably semiconductive, and self-discharges in less than one second. In a preferred process for transferring the toner image to a conductive conformable intermediate, both the intermediate transport member and the biased transfer roller are conductive.

Abstract: A toner composition comprised of resin particles and pigment particles comprised of a fullerene or fullerenes.

Abstract: A method and apparatus for cleaning photoreceptor substrates where at least one substrate is rotated in a bath of moving dry ice particles. The dry ice particles contact the outer surface of the substrate, melt locally upon contact and refreeze to capture particulate contaminants on the outer surface of the dry ice particles. An inert gas counter current to the flow of moving dry ice particles is supplied to enhance cleaning efficiency and assist in removing carbon dioxide, contaminants and small dry ice particles.

Abstract: A plurality of input/output connector modules are located along a time multiplex bus. Each module has a plurality of programmable cells comprised of digital components. Each cell can be electronically programmed to receive one bit of information. These bits of information are used by each module to determine the address and input/output configuration assumed by the module. Programming data is sent via a serial input data (SID) line to the programming cells. The SID line has a plurality of delays which are located between the modules. The delays allow all of the programming cells of one module to be programmed before the next module receives the data along the SID line. The delays are created by the intrinsic resistance of the SID line and capacitors connected to the SID line which cause a delay in the programming data. The SID line is also clamped to ground out the programming signals after each cell has been programmed.

Abstract: An ink cartridge for an ink jet printer that supplies ink at a negative pressure is disclosed. The cartridge includes a cartridge housing having an upper chamber and a lower chamber and a first wall therebetween. The upper chamber has an aperture exposed to atmosphere and it also contains a capillary foam having a specifiable capillarity for absorbing ink. The lower chamber is airlocked until the ink level in the upper chamber is sufficiently low to allow the passage of air through the pores. A printhead is disposed at a vertical height greater than a top level of the lower chamber. A supply line is provided which conveys ink by capillary action of the nozzles to the printhead. A second capillary foam has a specifiable capillarity greater than the capillarity of the first capillary foam. The second foam is in fluidic communication with the upper and lower chambers and with the supply line.

Abstract: An apparatus for transferring a developed image from a surface to a heated intermediate member. The intermediate member is reheated to at least partially melt the image therein. Thereafter, the image is transferred from the intermediate member to a sheet and fixed thereto.

Abstract: Low lateral force rolls used in supporting a photoreceptor belt to minimize lateral belt motion on a multi-pass color copier. Single piece, widely spaced mounting through shafts are used in connection with side support structure of the module drawer to reduce inboard and outboard misalignment. An integral tensions slide/side plate guidance control system is employed to reduce misalignment of the tension roller. Use of these features aid in minimizing undesirable belt movement.

Abstract: An electroforming process is used to prepare a thin, deformable metal member by immersing an electrode having an outer surface with an undulating cross-section of hill-like and valley-like shapes in an electroforming bath. The hill-like shapes are narrower than the valley-like shapes, and, in a preferred embodiment, the bottoms of the valley-like shapes are electroformed to be thinner than the tops of the hill-like shapes. The metal member is useful as a spring in a fluid bearing such as an air bearing.

Abstract: The alkoxy squaraines essentially as represented by the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 independently represent alkyl or aryl groups; X is hydrogen, halogen, alkyl, hydroxy, or alkoxy; and n is a number of from 0 to about 2.

Abstract: An electrophotographic imaging member includes two charge generator layers and a charge transport layer. The first charge generator layer is fabricated in the form of a dot or line pattern and is sensitive to a wavelength region to which the second continuous generator layer is both transparent and insensitive. This imaging member may be employed in an electrophotographic imaging process to produce textual or pictorial reproduction on demand.

Abstract: An improved method is disclosed for using a linear mixing space, such as a CIE color space, to determine the quantities of coloring agents needed to reproduce a color, applicable for example to printing a color which matches an original color on a CRT display. The calculations match hue, saturation and reflectance so that the matching color appears like the original color and so that characteristics of an original image are preserved. An original color's definition is converted into coordinates in the linear mixing space. An achromatic region in the linear mixing space, preferably elliptically shaped, is defined to include the coordinates of the neutral coloring agents. Original colors falling within the achromatic region are matched with quantities of neutral coloring agents only. The coordinates of a pure hue approximating the hue of the original color is then determined in the linear mixing space from the coordinates of selected primaries.

Abstract: A carrier composition comprised of a core with a coating thereover comprised of a mixture of first and second polymers that are not in close proximity thereto in the triboelectric series, which mixture contains a charge enhancing additive.

Abstract: A method and apparatus for applying a coating to a front face of an ink jet print head die or print head die comprise positioning a die in a cut out in a top surface of a block such that the die extends from the top surface of the block. An applicator such as a roller or flat blade is used to apply the coating to at least an upper surface of the die as the applicator rides along the upper surface of the die. When a roller is used as the applicator, the roller has a recess corresponding to the extension of the die from the top surface of the block. The roller recess contains a piece of elastomeric material which extends to an outer portion of the roller adjacent to said roller recess. The method and apparatus facilitate transfer of a thin, uniform film of coating to an ink jet printer print head die or a completed ink jet printer print head.

Abstract: Electrophotographic imaging members are disclosed which incorporate a charge transport layer comprising an arylamine/siloxane polymer.

Abstract: An apparatus for a Nozzleless Droplet Projection System (10) is disclosed. The invention employs a novel geometry for producing a thin film of ink (26) having a constant depth traveling at a constant velocity across a tubular transducer head (16a, 16b). The head includes a smooth exterior perimetrical surface (18) that faces toward a sheet of paper (14) and a laminar flow regulator (28) that resembles a knife-edge. An array of electro-acoustic transducers (15) submerged beneath the transducer head support surface (17) generates tone bursts (20) of acoustic energy which are focused by a corresponding array of acoustic lenses (19) inscribed along the length of the transducer head (16a, 16b). A constant thickness and constant velocity fluid film (26) is generated by forcing pre-regulated, pressurized fluid (33) through a narrow slit (30) and across the smooth perimetrical surface (18) of the transducer head (16a, 16b).

Abstract: Methods and apparatus are provided for forming images on a moving, charge retentive surface using a stream of radiant energy, modulated in imagewise fashion, wherein the intensity of the stream of radiant energy is controlled based on measured variations of the actual speed of the imaging surface from a set speed. In particular, a motion encoder, which is preferably the same motion encoder previously used to control the proper location of each line of information on the imaging surface is used to monitor the actual, instantaneous speed of the imaging surface to produce an actual speed signal. This actual speed signal is compared to a set speed signal to produce a speed variance signal which represents the difference between the actual imaging surface speed and the set speed. The variance speed signal is then used to control the intensity of the stream of radiant energy.