Patents Examined by Gerald E. Preston
  • Patent number: 5223858
    Abstract: A recording apparatus using a recording head driven in accordance with print information includes a feeder for feeding a recording material; a discriminator for discriminating presence or absence of next printing information before completion of discharging of a current printed recording material; and a controller for controlling the feeder to start feeding of the next recording material prior to completion of the discharging of the current recording material, when the discriminator discriminates the presence of the next printing information.
    Type: Grant
    Filed: April 12, 1991
    Date of Patent: June 29, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuyuki Yokoi, Mikio Shiga
  • Patent number: 5216452
    Abstract: An ink storing device comprises a first storing portion storing a first type of ink therein and a second storing portion having the interior thereof divided into a plurality of spaces and storing a plurality of types of inks therein. The first type of ink is that type of ink which is used more frequently than the rest of the types of inks, for example, black ink.
    Type: Grant
    Filed: April 20, 1989
    Date of Patent: June 1, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tetsuo Suzuki
  • Patent number: 5210615
    Abstract: A frame line inserting circuit in a printer for enabling the printing video data within a defined printing area of a printing paper, and enabling the printing of frame lines at selected horizontal and vertical boundaries of the printing paper where no video data is found.
    Type: Grant
    Filed: April 12, 1991
    Date of Patent: May 11, 1993
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Sang-Chul Kwon
  • Patent number: 5196860
    Abstract: A drive control system automatically maintains nozzle drive voltage within a proper range. The control system monitors the state of the "intermediate satellites" positioned between ink drops used for printing. When these satellites are neither forwared nor backward merging, a first cardinal point designated C(L) is identified. A second cardinal point, C(H), is determined when the drop breakoff point stops decreasing, relative to said nozzle, with increasing nozzle drive voltage. From the two cardinal values, a desired operating range for a particular ink can be computed and the control system automatically set. The computed value is essentially independent of temperature.
    Type: Grant
    Filed: May 16, 1990
    Date of Patent: March 23, 1993
    Assignee: Videojet Systems International, Inc.
    Inventors: James R. Pickell, Robert I. Keur, James E. Clark
  • Patent number: 5179393
    Abstract: An automatic lead feeding apparatus is used in an automatic drafting machine adapted to exchange pencil holders between a line drawing head and a writing instrument stocker. The automatic lead feeding apparatus has a unit holder moving in a direction of approach and separation from the writing instrument stocker to take a writing instrument or pencil holder removably arranged on the stocker. In consequence, the pencil holder is exchanged between the writing instrument holder and a writing instrument holder of the stocker. A lead feeding reservoir-stocker has a plurality of lead reservoirs containing plural leads. The lead feeding reservoir-stocker is arranged above the travelling path of the writing instrument holder. Lead is fed one by one from the reservoir-stocker by a shutter placed under the stocker and the lead is pushed in the pencil holder by a predetermined distance by a lead pusher.
    Type: Grant
    Filed: October 30, 1990
    Date of Patent: January 12, 1993
    Assignee: Mutoh Industries Ltd.
    Inventor: Isamu Takahashi
  • Patent number: 5177497
    Abstract: This is an apparatus and associated method for rolling large pieces of a flexible media such as completed plots produced by a plotting pen plotter. The rolling mechanism is placed adjacent an exit of the pen plotter to received ejected media pieces therein. Upon detecting the leading edge of a media piece while in an open position, the mechanism closes to form a guide slot to a cylindrical rolling chamber. The media piece is then urged along the guide slot and into the rolling chamber where it is rolled by a drive roller. Upon detecting the trailing edge of the media piece, the mechanism opens allowing the rolled media piece to fall into a receiving bin. The stationary portion and the rotating portion are formed of a plurality of slats having low contact area edges disposed for media pieces to move along whereby the media pieces move along a low friction path.
    Type: Grant
    Filed: April 17, 1991
    Date of Patent: January 5, 1993
    Assignee: Calcomp Inc.
    Inventors: Jose L. Calderon, Patrick Nguyen, John M. Bertalan
  • Patent number: 5170183
    Abstract: A recording medium discharge mechanism which discharges a recording medium (S) into a discharge tray (14) using a sheet discharge roller (69) and a sheet discharge biasing roller (72) that confronts the sheet discharge roller (66). The sheet discharge roller (69) has a plurality of vortical teeth extending in the direction of rotation of the sheet discharge roller. When the tail end of the recording medium (S) approaches the discharge roller (69), the circumferential speed of the sheet discharge roller (69) is increased so that the recording medium (S) can be accelerated into the sheet discharge tray (14) while biasing the tail end of the recording medium (S).
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: December 8, 1992
    Assignee: Seiko Epson Corporation
    Inventors: Hiromu Hirabayashi, Satoshi Fujioka
  • Patent number: 5168285
    Abstract: An ink jet pen has two modes of operation, a normal speed mode and a high speed mode. In the normal speed mode, the pen's ink reservoir is maintained at a desired below-atmospheric pressure by a bubble generator orifice that introduces air from an atmospherically vented chamber into the reservoir to relieve the partial vacuum caused by ejection of ink. In the high speed mode, a heater heats air trapped in the ink reservoir. As the air tries to expand, it pressurizes the ink and causes it more quickly to refill the pen's ink-ejecting nozzle after firing. The pen can thus be fired at a faster rate. The bubble generator orifice is blocked during the high speed mode by the first droplet of ink expelled through the orifice, which acts to wet and seal a vent tube.
    Type: Grant
    Filed: November 7, 1990
    Date of Patent: December 1, 1992
    Assignee: Hewlett-Packard Company
    Inventor: Thomas H. Winslow
  • Patent number: 5164740
    Abstract: The present invention provides an ink-jet ejection device which is capable of ejection or ink (including hot melt ink) jet frequencies greater than 50,000 Hz. A cantilevered beam of selected shape is mounted at its base to a piezoelectric element which oscillates the base. The beam is shaped so that its moment of inertia is reduced toward its free end. The element is activated by an oscillating electrical signal the frequency of which is equal to or close to a natural frequency of oscillation of the beam. In the preferred embodiment herein a third or higher modal frequency is utilized. Because of the structural configuration of the cantilevered beam and the selected frequency of oscillation thereof, the tip of the beam oscillates over an amplitude which is significantly greater than the oscillation amplitude of the base. The beam is highly damped and made of low density material so that the tip amplitude is extremely responsive to variations in the base amplitude.
    Type: Grant
    Filed: April 24, 1991
    Date of Patent: November 17, 1992
    Inventor: Yehuda Ivri
  • Patent number: 5162619
    Abstract: A membrane for a loudspeaker is designed so as to facilitate manufacture and to improve the tone of the loudspeaker. The membrane consists of a first plastic film (5a) which serves to retain the shape and a second plastic film (56) laminated to the first film which serves to damper partial oscillations. The membrane is particularly suitable as a conical membrane for a loudspeaker for a television receiver.
    Type: Grant
    Filed: January 3, 1990
    Date of Patent: November 10, 1992
    Assignee: EWD Electronic-Werke Deutschland GmbH
    Inventors: Karl-Heinz Thiele, Jurgen Ehmann, Klaus Harbarth
  • Patent number: 5160940
    Abstract: An ink jet printing machine for elongate cylindrical articles such as tubes or straws for biological fluids, includes an automatically controlled ink-jet printing station. The printing station includes a printing head, handling apparatus for the straws or tubes comprising an admission passage for receiving, guiding and feeding straws or tubes, a wall panel, a suction port disposed in the wall panel at a downstream end of the admission passage and connected to a source of vacuum, a transfer plunger mounted for reciprocating along the wall panel between the suction port and a conveyor, the leading straw or tubes being transferred from the suction port to the conveyor by displacement of the transfer plunger toward the conveyor.
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: November 3, 1992
    Inventors: Robert Cassou, Maurice Cassou, Bertrand Cassou
  • Patent number: 5160939
    Abstract: A device for controlling and regulating a continuous ink jet printer wherein a jet (J) is fractionated into droplets charged in a charge electrode (6) and which then pass between deflection electrodes, a sensor (8) is provided which includes a conductor element (8c) having two parts which are symmetrical with respect to the trajectory of the droplets. The device includes a circuit (9) which determines and processes the first I(t) and second J(t) derivatives with respect to the time of the charge induced in the conductor element (8c) by charged droplets (Gc) in order to determine their speed. The device includes means for regulating the speed of droplets and means for regulating the ink quality.
    Type: Grant
    Filed: May 17, 1990
    Date of Patent: November 3, 1992
    Assignee: Imaje S.A.
    Inventors: Paul Bajeux, Alain Dunand
  • Patent number: 5157411
    Abstract: A recording head has a plurality of arranged recording elements, wherein the recording elements are selectively supplied with driving signals and driven by electrical energy. The head includes a dividing unit for dividing a plurality of arranged recording elements into at least two blocks each simultaneously operable, and correcting unit for correcting the characteristics of the recording elements in accordance with electrical energy at respective blocks, whereby the recording head's life is prolonged and a high quality picture image can be obtained.
    Type: Grant
    Filed: February 1, 1991
    Date of Patent: October 20, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nobuhiko Takekoshi, Hisashi Fukushima, Haruhiko Moriguchi
  • Patent number: 5153603
    Abstract: A self-contained alcohol purging and cleaning system for direct writing type trace recorders utilizes a source of compressed air, a tank of R-22 refrigerant and a tank of isopropyl alcohol. A main supply line tube may have its inlet port end selectively connected to either the source of the compressed air or the R-22 tank. The outlet port end of the main supply line tube is connected to the inlet port of the alcohol tank. A first elongated tubing member has its one end connected to the outlet port of the alcohol tank and its free output port end may be detachably connected to inlet end of an output hose whose outlet end is detachably connected to the ink supply manifold of a direct writing type trace recorder. By opening various valves of the system, pressurized gas passing through the main supply line tube forces the isopropyl alcohol into the ink supply manifold and out through its outlet ports until thickened ink is purged and the isopropyl alcohol flowing therefrom is reasonably clear.
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: October 6, 1992
    Assignee: General Dynamics Corporation, Space Systems Division
    Inventor: Michael J. Spence
  • Patent number: 5150131
    Abstract: A graphics printer including a device for ensuring contact between a print medium and a guiding platform at the printing zone of the graphics printer, including a suction chamber, a suction means for creating a partial vacuum in the suction chamber located beneath the guiding platform and a plurality of orifices formed across the width of the platform communicating with the suction chamber, the print medium being guided over the platform covering a variable portion of the width of the platform as a function of the format of the print medium, the suction chamber being provided with one or more partitions separating the chamber width-wise into compartments while leaving a limited air passage section between the adjacent compartments.
    Type: Grant
    Filed: January 22, 1991
    Date of Patent: September 22, 1992
    Assignee: OCE Graphics France, S.A.
    Inventor: Thierry Le Jaoudour
  • Patent number: 5148189
    Abstract: A thermal print head includes a plurality of selective electrodes formed on a substrate, a common electrode formed on the substrate at a distance from the selective electrodes, and a fiber mounted on the substrate at a position between the common electrode and the selective electrodes. The fiber projects higher than the top surfaces of the common and selective electrodes, and is fixed to the substrate by an adhesive having a top surface which is upwardly inclined toward the fiber. Heat resistive films overlay the fiber and adhesive and electrically connect the selective electrodes to the common electrode.
    Type: Grant
    Filed: May 16, 1991
    Date of Patent: September 15, 1992
    Assignee: Casio Computer Co., Ltd.
    Inventors: Osamu Kuwabara, Jiro Mutoh, Akihiko Abe
  • Patent number: 5146237
    Abstract: A method of resistive sheet transfer recording is disclosed, in which the thermal diffusion coefficient of a resistive sheet (1) in the range of 1 to 100.times.10.sup.-6 m.sup.2 /s is combined with that of an electrode head (2) in the range of 0.1 to 50.times.10.sup.6 m.sup.2 /s, thereby making it possible to form a high-quality image at high sensitivity and high speed.
    Type: Grant
    Filed: January 11, 1990
    Date of Patent: September 8, 1992
    Assignee: Matushita Electric Industrial Co., Ltd.
    Inventors: Nobuyoshi Taguchi, Akihiro Imai, Hiromu Matsuda, Tetsuji Kawakami, Keiichi Yubakami
  • Patent number: 5144330
    Abstract: A method and apparatus for printing identification markings on pipes in a pipe processing system including a print engine having a microcontroller connected to a host or main frame computer. The print engine is connected to a printing device having a printing head which is rotatable relative to a pipe being conveyed through the printing station. Rotation of the printing head facilitates altering the character height printed by the head within a continuous range of possible sizes.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: September 1, 1992
    Inventor: Charles G. Bennett
  • Patent number: 5144334
    Abstract: A thermosensitive recording method comprising the steps of superimposing a sublimation-type thermosensitive image transfer recording medium on an image receiving sheet, and applying heat imagewise to the recording medium while moving the recording medium and the image receiving sheet in such a manner that the running speed of the image receiving sheet is greater than that of the recording medium. The recording medium for use with the above method comprises an ink layer containing a sublimable dye and one or more organic binder agents in which the sublimable dye is dispersed in the form of granules.
    Type: Grant
    Filed: February 7, 1990
    Date of Patent: September 1, 1992
    Assignee: Ricoh Company, Ltd.
    Inventors: Akira Suzuki, Hidehiro Mochizuki, Masaru Shimada, Hiroyuki Uemura, Naoya Morohoshi
  • Patent number: 5142298
    Abstract: A method for the continuous marking of elongated material (1) which is moved in its longitudinal direction, by which ring-shaped markings which are limited in axial direction are applied to the surface of the material (1) by means of ink jets (2). The ink jets (2) emerge under pressure from two nozzles (6, 7) which are arranged parallel to each other and swing continuously on a swing shaft (5). If only one nozzle (6) is to function, the other nozzle (7) is closed by a 3/2-way valve (20). At the same time, a bypass (18) is opened through which the quantity of ink intended for the disconnected nozzle (7) is conducted away. The ink jet (2) of the still functioning nozzle (6) is then retained without change.
    Type: Grant
    Filed: January 2, 1990
    Date of Patent: August 25, 1992
    Assignee: Kabelmetal electro Gesellschaft mit beschrankter Haftung
    Inventors: Ernst Hoffmann, Harry Staschewski, Siegfried Wandelt