Abstract: An ink for ink jet printing includes a liquid vehicle comprising water and toner particles with a colorant dispersed in or associated with the toner particles. The ink composition combines the print quality advantages of xerographic printing with the economic advantages of ink jet printing, thereby providing waterfast, archival quality prints.

Abstract: An ink sheet having an ink layer, containing ink to be molten by heat generated by its absorption of received light, includes a magnetic layer being magnetized to have a preset magnetic pattern. The direction of polarization of the reflecting light varies depending on a state of the magnetization on the magnetic layer when part of the received light is incident on and reflected from the magnetic layer. The ink sheet is combined with a printer in which a recording medium and the ink sheet are coupled together, and ink is transferred to the recording medium when the ink sheet receives light. The printer includes optical heads for projecting a light beam upon the ink sheet while moving in the width direction of the ink sheet, sensors for sensing a state of polarization of the light beam reflected from the ink sheet, and actuators for adjusting an irradiating position of the light beam on the ink sheet on the basis of a state of polarization of the reflecting light that is sensed by the sensor.

Abstract: An electrostatographic reproduction machine including a movable photoconductive member having an image bearing surface; devices for forming a latent image electrostatically on the image bearing surface; a developing assembly including toner particles for developing the latent image to be transferred onto a sheet; a moving device for moving waste toner particles from the image bearing surface and from the developing assembly; a toner particle cartridge having a waste toner receiving opening for receiving waste toner particles from the moving device; and a non-interfering dual-use cartridge sealing device for accessibly presealing the receiving opening for receiving waste toner particles, and for effectively resealing the receiving opening during shipping of the toner cartridge to a recycling location.

Abstract: A toner comprising toner particles comprising a binder resin and a colorant, wherein the toner particles have a number average particle diameter of from 3 to 10 .mu.m and satisfy relationship (1) or (2):M.sub.50 (b)>M.sub.50 (a)>M.sub.50 (c) (1)M.sub.50 (b)<M.sub.50 (a)<M.sub.50 (c) (2)wherein M.sub.50 (a) is an average shape index at a number average particle diameter D.sub.50 which is calculated from cumulative 50% particles counting from the larger diameter side, M.sub.50 (b) is an average shape index at a number average particle diameter D.sub.16 which is calculated from cumulative 16% particles counting from the larger diameter side, and M.sub.50 (c) is an average shape index at a number average particle diameter D.sub.84 which is calculated from cumulative 84% particles counting from the larger diameter side.

Abstract: An assembly is provided for detection of radiation directed through an object. A phosphor converter disposed to receive the radiation pattern generates visible light representative of the radiation pattern. A plurality of light sensors are disposed to define a sensor array for receiving the visible light and generating a pixel signal pattern representative of the radiation pattern. A plurality of reflectors are disposed at locations for reflecting a portion of the visible light radiating in a direction to avoid being received in the plurality of light sensors. The light is reflected back into the phosphor converter where a diffuse reflection of the reflected light redirects the light back towards the sensors.

Abstract: The present invention provides an image forming method which is featured by the advantages such as a high-quality image, a relatively high speed operation, a low running cost, energy saving, resource saving and friendliness to both environments and users.First, there is prepared an image forming medium which comprises on an electroconductive substrate an electroconductive polymer layer capable of taking in and holding an ionic dye as a result of the change in at least two states selected from the group consisting of an oxidized state, a neutral state and a reduced state of the electroconductive polymer and which holds an ionic dye. Next, an image receiving medium, which has OH.sup.- ions having the same polarity as that of the ionic dye held in the electroconductive polymer layer, is brought into contact with the electroconductive polymer layer. Accordingly, there occurs an ion exchange between the ionic dye held in the electroconductive polymer layer and the OH.sup.

Abstract: An image forming apparatus heats and presses a toner image retaining medium, with a toner image being formed thereon, and a sheet of print paper in face-contact with each other so that the toner image is transferred and simultaneously fixed onto the print paper, and rectifies the curling of the face-contact medium and paper during the heat-pressing process, thereby attaining a high print quality without creases on the paper which would otherwise emerge due to the heat-pressing process.

Abstract: A luminescent composition containing a mixture of a fluorescent material and a metal chelate compound of the formulaL.sub.n --M.sup.+n (I)wherein M represents a metal; n is a number of from 1 to 3, and L is a ligand of the formula ##STR1## wherein Ar is an aryl; X is selected from the group consisting of oxygen, sulfur, and selenium; N is nitrogen; O is oxygen, and Z is a suitable aromatic component.

Abstract: A development system including a developer transport adapted for depositing developer material on an imaging surface having an electrostatic latent image thereon, including a housing defining a chamber storing a supply of developer material including toner. A donor member is mounted partially in said chamber and spaced from the imaging surface, for transporting developer on an outer surface thereof to a region opposed from the imaging surface. The donor member has a magnetic assembly, which includes a plurality of poles, and a sleeve, enclosing said magnetic assembly and rotating about said magnetic assembly. A sensor measures a magnetic field of said donor roll at a predefined position on said donor roll. A magnetic system generates a magnetic field to reduce developer bed height of said developer material on said donor member in a development zone.

Abstract: An rapid wake up fuser system member for use in an electrophotographic apparatus for fusing toner images to a copy substrate, the fuser member having a substrate, a heat transmissive layer having a silicone material and a Q-resin provided on the substrate layer, and a polymer-containing toner release layer provided on the heat transmissive layer.

Abstract: A method and system accumulates an error from an error diffusion process used for rendering continuous images. A scan from an original document generates a plurality of original pixel values which are adjusted by an accumulated error value corresponding to the total effect of neighboring pixels. The adjusted pixel error value is determined between the adjusted pixel value and an output. The adjusted pixel error value is weighted by a predetermined weighting technique and diffused among a plurality of neighboring pixel locations to generate a plurality of intermediate pixel error values. Intermediate pixel errors are accumulated and stored in an error buffer before being combined with an original pixel value. Repetitive access to a memory location associated with the adjusted pixel value is obviated by accumulation of the intermediate pixel values in intermediate registers. A compressor compresses the diffused error values before storage in a buffer as accumulated error values.

Abstract: An address line arrangement which uses weighted sets of mutually independent rather than binary address lines to enable the accessing of any number of targeted elements at one time. The elements in a device are divided into groups of elements. For a numerical example, assume four elements per group and eight groups per device. One set of four address lines is wired to access one or all groups in one half of the device and a second set of four lines will access one or all groups in the other half of the device. A third set of four address lines is wired to all elements and will access one, two or all elements in each group at a time. Each element is wired to one line in the first or second group and one line in the second or third group. Since all address lines can be individually turned on, one or more elements can be accessed at one time.

Abstract: Temporary states are used transitionally in run-time situations and are unknown to the object database. A temporary state is created if, when an object is performing a requested event, interim work needs to be performed before the object reaches a permanent destination state. Use of a temporary state is transparent to the caller of the requested event. Within a single flow of control, an unlimited number of nested locks may be acquired. A request to unlock an object will only truly unlock the object if the unlock requester is at the highest level of locking. For recursive or embedded functions, no knowledge of the previous locking condition is necessary. Attribute-based locking provides a mechanism for allowing only certain members of the system to lock an object for writing while the object is in a predetermined state. However, any thread may obtain a read lock on an object in order to examine its attributes.

Abstract: An apparatus in which the developability and interactivity of electrostatically charged particles in a mixture of particulate material is measured. The sensor apparatus includes a transparent member positioned closely adjacent to a developer roller of an electrophotographic printing machine. Electrostatically charged particles are attracted from the particulate mixture being transported by the developer roller to the member. A beam of energy is transmitted through the member. The intensity of the internally reflected beam is detected and a signal generated indicative of the quantity of charged particles adhering to the member. A cleaning field bias is applied, to determine if a signal indicative of the charge particles being removed (interactivity) from the member is generated.

Abstract: A hot melt ink composition comprised of a triblock copolymer vehicle, and a dye or pigment.

Abstract: An apparatus for use in a printing machine including a member for storing a latent image thereon of a document is provided. The printing machine is adapted to produce a printed copy of the document on a substrate. The apparatus adjusts the printed copy output rate thereof. The apparatus includes a latent image generating device for generating the latent image of the document. The latent image generating device has a switch for initiating the generating the latent image of the document. The apparatus further includes an adjustable timer for setting an elapsed time between sequential generations of the latent image of the document and a controller for controlling the printed copy output rate of the printing machine. The controller is adapted to provide for a plurality of printed copy output rates based on the time elapsed between sequential generations of the latent image of the document.

Abstract: An ink-jet recorder is disclosed which has an arrangement of a plurality of heat-generating elements, drivers for driving the heat-generating elements, and a drive circuit for controlling the drivers according to image data, wherein the drive circuit includes; a split-block drive circuit that divides the plurality of heat-generating elements into a plurality of blocks, and drives the heat-generating elements on a block-by-block basis in a time-sharing manner, and a data retaining circuit for retaining print data; and the split-block drive circuit that; drives each of the blocks of the heat-generating elements at printing operations, using a pre-pulse during which ink is not squirted and a main pulse during which ink is squirted; and drives another group of heat-generating elements differing from the currently-driven group of heat-generating elements, during intervals between the pre-pulse and the main pulse.

Abstract: The present invention provides a charged member which has no reduction in the amount of electrostatic charge at high temperature and high humidity and no extreme increase in the amount of electrostatic charge at low temperature and low humidity, improves the adhesion force between a charged member and a coating layer, prevents deterioration of developer through peeling of the coating layer. It provides excellent durability without deterioration of toner through adhering of a toner to the carrier. More particularly, a carrier for electrophotography and a sleeve for electrostatic development which use as a coating material a high-molecular compound containing as an essential component the first monomer represented by the following general formula (1) and/or (2), the second monomer represented by the following general formula (3) and/or (4) and a coupling agent containing a vinyl group are provided.

Abstract: A thermal ink-jet printhead includes ejectors wherein a heating surface is disposed within a channel retaining liquid ink. The heating element within each ejector includes a converter for converting applied electrical energy to heat energy, and a distributor, for distributing the heat energy over a portion of the heating surface. The structure of the heating element allows the effective area of nucleation within the heating area, the size of which directly affects the volume of the ejected liquid ink droplet, to be varied with voltage and/or pulse width.

Abstract: Method and apparatus for processing color images wherein a black ink having a low infiltrate rate and color inks having a high infiltration rate are used for color printing are described. In the method and apparatus, part of black image data is converted into image data for other colors so that part of a portion to be printed with black ink droplets is printed with color ink droplets. Alternatively, part of the portion may be printed with black ink dots and other color dots being superposed. By this, bleeding between black and other color inks can be suppressed with the resultant image being a black density and sharp edge when printed on ordinary paper.