Patents by Inventor Haruhiko Moriguchi
Haruhiko Moriguchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 4809063Abstract: The likelihood that differently colored inks will overlap is minimized in a multicolor printing system employing the dither method by using a different dither matrix for each color and arranging the lowest threshold valued cells of the dither matrices so that they do not overlap when repeated across a printing surface. A preferred embodiment uses rectangular dither matrices of different size, shape, and arrangement of threshold values.Type: GrantFiled: May 26, 1988Date of Patent: February 28, 1989Assignee: Fuji Xerox Co., Ltd.Inventors: Haruhiko Moriguchi, Inui Toshiharu
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Patent number: 4701811Abstract: In a half-tone recording method and apparatus, half-tone expressing units, each consisting of several recording picture elements, express gradations of density in a document. The recording picture elements in the units are assigned various half-tone levels with the half tone level of at least one of the recording picture elements both increasing and decreasing as the gradation of the half-tone expressing unit increases.Type: GrantFiled: May 14, 1985Date of Patent: October 20, 1987Assignee: Fuji Xerox Co., Ltd.Inventors: Haruhiko Moriguchi, Toshiharu Inui, Yoshihiro Ishida
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Patent number: 4685069Abstract: A heat storage correction apparatus and method determines the degree of solidity of a picture data to be recorded and increases the quantity of energy supplied to data elements recording substantially solid portions of the picture elements.Type: GrantFiled: December 21, 1984Date of Patent: August 4, 1987Assignee: Fuji Xerox Co., Ltd.Inventors: Toshiharu Inui, Haruhiko Moriguchi, Masayuki Hisatake, Takashi Ohmori
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Patent number: 4679055Abstract: Each picture element is made to correspond to a plurality of dots and the ratios of printing energy corresponding to respective dots in each picture element are determined to correspond to respective tones. The heat accumulation state of a heat generating member corresponding to a picture element to be printed is detected from the tones of picture elements about the picture element to be printed for controlling the printing energy supplied to the heat generating members corresponding to respective dots of the picture image to be printed in accordance with the printing energy ratio and the detected state. With this method it is possible to provide a half tone print having uniform high quality regardless of the tone of a previous line and tones of surrounding picture elements.Type: GrantFiled: March 31, 1986Date of Patent: July 7, 1987Assignee: Fuji Xerox, Co., Ltd.Inventors: Toshiharu Inui, Haruhiko Moriguchi
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Patent number: 4651167Abstract: A printing method is shown in which printing quality is improved when superimposed thermal-transfer recording is performed. According to the present invention, at least one of a plurality of thermal-transfer media is made of a material of different thermal characteristics from the remaining media. Different thermal-transfer media thermal characteristics are obtained by changing the thickness, melting point or viscosity of the thermal-transfer ink on the thermal transfer media, or by changing the thickness, quality of material or density of the base material of the thermal-transfer media.Type: GrantFiled: September 24, 1985Date of Patent: March 17, 1987Assignee: Fuji Xerox Co., Ltd.Inventors: Haruhiko Moriguchi, Toshiharu Inui, Takashi Ohmori, Yoshiki Kikuchi
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Patent number: 4638372Abstract: A copier capable of producing both color images and monochrome images is disclosed, which comprises a platen for mounting thereon a manuscript, a scanner unit adapted to reciprocate relative to the platen and generate image signals divided in three primary colors by reading the manuscript for each line or for each set of a plurality of lines, four thermal heads for receiving image signals and, in response thereto, selectively actuating heat generation elements, means for supplying the thermal heads with ink donor films of four colors including black, and means for effecting thermal transfer printing on record paper.Type: GrantFiled: September 26, 1984Date of Patent: January 20, 1987Assignee: Fuji Xerox Co., Ltd.Inventors: Svay Leng, Hiroyuki Saitoh, Toshiharu Inui, Norihiko Koizumi, Haruhiko Moriguchi, Takashi Omori, Masami Kurata, Yasuo Katoh
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Patent number: 4622595Abstract: An image reproducing apparatus wherein a halftone of an image is reproduced by repeating a picture element pattern composed of a plurality of dots as a unit and each dot display density of which is gradually controlled. The repetition of the same picture element patterns is avoided to improve tone reproducing performance.The image display unit includes a means for determining a disposition of dots composing a specific picture element pattern, i.e., display density of each dot in response to tone density of the original image, a means for comparing the disposition of dots of the specific picture element pattern determined by said means with a dot disposition or dispositions of one or plural surrounding picture element pattern or patterns, and a means for changing the dot disposition of said specific picture element pattern in the case when it is identical with dot dispositions of a predetermined number or more of surrounding picture element patterns.Type: GrantFiled: December 6, 1984Date of Patent: November 11, 1986Assignee: Fuji Xerox Co., Ltd.Inventors: Masayuki Hisatake, Haruhiko Moriguchi, Toshiharu Inui, Akio Noguchi
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Patent number: 4607262Abstract: A thermal head drive circuit for use with a thermal head comprising multiple heat generating elements for data recording comprising a heat accumulation calculating unit (36) for calculating the heat residual from prior recording steps and a pulse width calculating unit (38) for calculating the pulse widths of voltage to be applied to an element dependent on the calculated residual heat and the pulse width of the prior recording step.Type: GrantFiled: January 10, 1984Date of Patent: August 19, 1986Assignee: Fuji Xerox Co., Ltd.Inventors: Haruhiko Moriguchi, Toshiharu Inui, Masami Kurata
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Patent number: 4590487Abstract: A thermal head drive circuit is provided in which the thermal energy applied during printing is corrected due to the black-white ratio, the thermal head's heat accumulation and the heat history data. The circuit includes a heat accumulation state operator, a pulse width calculator, a pulse width memory and a pulse width determining circuit. The circuit also includes a fundamental pulse width determining circuit and an auxiliary pulse width determining circuit for determining the additional pulse width to be applied with the output from the fundamental pulse width determining circuit.Type: GrantFiled: September 28, 1984Date of Patent: May 20, 1986Assignee: Fuji Xerox Co., Ltd.Inventors: Akio Noguchi, Haruhiko Moriguchi, Toshiharu Inui, Masayuki Hisatake
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Patent number: 4574293Abstract: Electric energy to be applied to each heating element of the thermal head is controlled by taking into account the energy applied to the heating element one scan period before as well as the effect of heat accumulated in heating elements surrounding the heating element, and then the energy thus controlled is recorrected taking into consideration the temperature change in a thermal head base plate or the change in printing time between lines.Type: GrantFiled: May 16, 1984Date of Patent: March 4, 1986Assignee: Fuji Xerox Co., Ltd.Inventors: Toshiharu Inui, Haruhiko Moriguchi
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Patent number: 4574281Abstract: An image displaying device uses a thermal head to selectively create a magnetization pattern on an endless belt magnetic recording medium according to a signal applied thereto by heating the magnetic recording medium to its Curie temperature. Polarized light is then passed through or reflected from the belt and fed to an analyzer to obtain an image.Type: GrantFiled: July 22, 1982Date of Patent: March 4, 1986Assignee: Fuji Xerox Co., Ltd.Inventors: Haruhiko Moriguchi, Yoshiki Kikuchi, Takashi Ohmori
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Patent number: 4568948Abstract: A thermal recording head is provided with a driving system wherein higher printing speeds may be obtained. Particularly, in the case where the image to be printed by a divided block of elements is totally black, all common driving terminals corresponding to the block are selected for simultaneous recording.Type: GrantFiled: March 15, 1982Date of Patent: February 4, 1986Assignee: Fuji Xerox Company LimitedInventors: Haruhiko Moriguchi, Takashi Ohmori
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Patent number: 4568817Abstract: In a thermal printing utilizing a heat sensitive printing paper or an ink donor film, sticking of a heat sensitive color developing layer on the printing paper or a substrate film of the ink donor film to a thermal head is prevented by supplying a predetermined amount of electric energy to heat generating elements of the thermal head during time intervals between successive printing heat generations in the heat generating elements. For this purpose, warming pulses generated from a warming pulse generating circuit are applied during the time intervals to the heat generating elements for warming the same.Type: GrantFiled: June 26, 1984Date of Patent: February 4, 1986Assignee: Fuji Xerox Co. Ltd.Inventors: Svay Leng, Toshiharu Inui, Haruhiko Moriguchi
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Patent number: 4567488Abstract: A method and device for driving a thermal head taking into consideration not only picture data already recorded and picture data on the line containing the aimed data currently being recorded, but also picture data intended to be recorded.Type: GrantFiled: December 27, 1984Date of Patent: January 28, 1986Assignee: Fuji Xerox Co., Ltd.Inventors: Haruhiko Moriguchi, Toshiharu Inui, Masayuki Hisatake, Takashi Ohmori
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Patent number: 4563691Abstract: A thermo-sensitive recording apparatus individually controls the energization level of each of a plurality of heater elements formed on a substrate and constituting a thermal print head. In generating each energization level, the present and previous status of an individual heater element and selected neighboring elements are taken into consideration. Other factors combined in a selectively weighted manner include the latent heat of the individual heater element and its neighboring heater elements, the resistance of the heater element, the percentage of heater elements to be activated during the printing of a line, and the temperature of the substrate.Type: GrantFiled: December 24, 1984Date of Patent: January 7, 1986Assignee: Fuji Xerox Co., Ltd.Inventors: Akio Noguchi, Haruhiko Moriguchi, Norihiko Koizumi, Takashi Ohmori, Toshiharu Inui
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Patent number: 4560988Abstract: A thermal head for use in thermal printing is operated according to a method in which the data of one line are recorded divisionally, with recording operations for the first and second halves of a line being carried out alternatingly and repeatedly.Type: GrantFiled: July 16, 1982Date of Patent: December 24, 1985Assignee: Fuji Xerox Co., Ltd.Inventors: Haruhiko Moriguchi, Toshiharu Inui, Takashi Ohmori
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Patent number: 4549221Abstract: A facsimile communication system in which transmission is carried out in such a manner that, when the time of transmission of the video signals of lines provided by scanning an original is shorter than that determined by a facsimile on the signal receiving side, fill bits are transmitted in succession with the video signals so that the time of transmission of each line is adjusted to that determined by the facsimile on the signal receiving side. The period of time required for the facsimile on the signal receiving side to record video signals per line is discriminated by a facsimile on the signal transmitting side for every line according to the contents of video signals. The period of time thus discriminated is utilized as the time of transmission to transmit the video signals for each line.Type: GrantFiled: January 14, 1983Date of Patent: October 22, 1985Assignee: Fuji Xerox Co., Ltd.Inventors: Tadashi Yamamoto, Haruhiko Moriguchi
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Patent number: 4536774Abstract: A thermal head drive circuit with the input connected to a source of printing data and the output connected to a thermal head including heater elements, so as to improve the printing quality of a thermal head recording apparatus for printing successive lines. Improved printing quality is effected by using data from previously printed lines to compute a corrected pulse energy for the line being printed. The circuit uses a heat accumulation state operator for computing the heat storage state of each of the heater elements constituting a thermal head, a pulse energy operator for computing a printing pulse energy to be applied to each of the heater elements, a memory for storing the electrical pulse energy used in the previously printed line, and either a pulse interval detector for detecting a time interval from a termination of printing of a previously printed line, or a temperature detector for detecting an internal-temperature of a thermal head.Type: GrantFiled: March 21, 1984Date of Patent: August 20, 1985Assignee: Fuji Xerox Co., Ltd.Inventors: Toshiharu Inui, Haruhiko Moriguchi
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Patent number: 4535340Abstract: A thermal head is provided with a plurality of juxtaposed heat generating resistors for applying heat to heat sensitive printing medium for reproducing a picture. The resistance values of the heat generating resistors are individually detected at predetermined times and used to update the contents of a memory means. An arithmetic operating circuit calculates quantities of electric power to be supplied to respective heat generating resistors for causing them to generate the same quantity of heat irrespective of the difference in the resistance values of the heat generating resistors.Type: GrantFiled: June 13, 1984Date of Patent: August 13, 1985Assignee: Fuji Xerox Co. Ltd.Inventors: Haruhiko Moriguchi, Takashi Omori, Toshiharu Inui
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Patent number: 4524368Abstract: A thermal head drive circuit with the input connected to a source of printing data and the output connected to a thermal head including heater elements, so as to improve the picture quality of a thermal head recording apparatus for printing successive lines. Improved picture quality is effected by using data from previously printed lines to compute a corrected pulse energy for the line being printed. The circuit uses a heat storage state operator for operating the heat storage state of each of the heater elements constituting a thermal head, a pulse energy operator for computing a printing pulse energy to be applied to each of the heater elements, a memory for storing the electrical pulse energy used in the previously printed line, and a counter to count the number of dots on the line to be printed. The pulse energy operator uses data from the heat storage state operator, the counter, and from the memory which has data on the pulse energy used in previously printed lines.Type: GrantFiled: March 30, 1984Date of Patent: June 18, 1985Assignee: Fuji Xerox Co., Ltd.Inventors: Toshiharu Inui, Haruhiko Moriguchi