Patents by Inventor Koichi Katoh
Koichi Katoh 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: 7212753Abstract: An image forming apparatus includes an image carrier; an exposing unit that exposes the image carrier to light to form an electrostatic latent image on the image carrier; a developing unit that has at least a toner, and develops the electrostatic latent image formed on the image carrier as a toner image; a transfer unit that transfers the toner image onto a recording medium; a fixing unit that fixes the toner image transferred on the recording medium; an exposure-energy modulating unit that modulates exposure energy of the exposing unit; and a development-time detecting unit that detects operation time of the developing unit. The exposure-energy modulating unit modulates the exposure energy based on a result of detection by the development-time detecting unit.Type: GrantFiled: January 7, 2005Date of Patent: May 1, 2007Assignee: Ricoh Company, LimitedInventors: Hirokatsu Suzuki, Hiroshi Nakai, Hideki Kosugi, Ichiro Kadota, Jun Yura, Koichi Katoh, Kei Yasutomi, Kazumi Suzuki
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Publication number: 20050152707Abstract: An image forming apparatus includes an image carrier; an exposing unit that exposes the image carrier to light to form an electrostatic latent image on the image carrier; a developing unit that has at least a toner, and develops the electrostatic latent image formed on the image carrier as a toner image; a transfer unit that transfers the toner image onto a recording medium; a fixing unit that fixes the toner image transferred on the recording medium; an exposure-energy modulating unit that modulates exposure energy of the exposing unit; and a development-time detecting unit that detects operation time of the developing unit. The exposure-energy modulating unit modulates the exposure energy based on a result of detection by the development-time detecting unit.Type: ApplicationFiled: January 7, 2005Publication date: July 14, 2005Inventors: Hirokatsu Suzuki, Hiroshi Nakai, Hideki Kosugi, Ichiro Kadota, Jun Yura, Koichi Katoh, Kei Yasutomi, Kazumi Suzuki
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Patent number: 6579215Abstract: A tool, attachable to a spindle of a machine tool and capable of changing independently a rotational speed of a cutting tool from that of the spindle, provided with a cutting tool for machining a workpiece, an electric motor for driving the machining tool, a generator for generating electric power to drive the electric motor by the rotation of the spindle, a tool holding part for rotatably holding the cutting tool, a casing for holding the electric motor, the generator, the tool attachment part, and the tool holding part, and a locking part for preventing rotation of the casing by engagement with a non-rotating part of the machine tool.Type: GrantFiled: July 22, 2002Date of Patent: June 17, 2003Assignee: Toshiba Kikai Kabushiki KaishaInventors: Koichi Katoh, Yasunori Katoh
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Publication number: 20020183178Abstract: A tool, attachable to a spindle of a machine tool and capable of changing independently a rotational speed of a cutting tool from that of the spindle, provided with a cutting tool for machining a workpiece, an electric motor for driving the machining tool, a generator for generating electric power to drive the electric motor by the rotation of the spindle, a tool holding part for rotatably holding the cutting tool, a casing for holding the electric motor, the generator, the tool attachment part, and the tool holding part, and a locking part for preventing rotation of the casing by engagement with a non-rotating part of the machine tool.Type: ApplicationFiled: July 22, 2002Publication date: December 5, 2002Applicant: Toshiba Kikai Kabushiki KaishaInventors: Koichi Katoh, Yasunori Katoh
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Patent number: 6474913Abstract: A tool, attachable to a spindle of a machine tool and capable of changing independently a rotational speed of a cutting tool from that of the spindle, provided with a cutting tool for machining a workpiece, an electric motor for driving the machining tool, a generator for generating electric power to drive the electric motor by the rotation of the spindle, a tool holding part for rotatably holding the cutting tool, a casing for holding the electric motor, the generator, the tool attachment part, and the tool holding part, and a locking part for preventing rotation of the casing by engagement with a non-rotating part of the machine tool.Type: GrantFiled: May 30, 2001Date of Patent: November 5, 2002Assignee: Toshiba Kikai Kabushiki KaishaInventors: Koichi Katoh, Yasunori Katoh
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Publication number: 20010049325Abstract: A tool, attachable to a spindle of a machine tool and capable of changing independently a rotational speed of a cutting tool from that of the spindle, provided with a cutting tool for machining a workpiece, an electric motor for driving the machining tool, a generator for generating electric power to drive the electric motor by the rotation of the spindle, a tool holding part for rotatably holding the cutting tool, a casing for holding the electric motor, the generator, the tool attachment part, and the tool holding part, and a locking part for preventing rotation of the casing by engagement with a non-rotating part of the machine tool.Type: ApplicationFiled: May 30, 2001Publication date: December 6, 2001Applicant: TOSHIBA KIKAI KABUSHIKI KAISHAInventors: Koichi Katoh, Yasunori Katoh
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Patent number: 5940192Abstract: An image processing apparatus includes a plurality of memories for storing input image data in units of lines, and a processing unit for controlling write and read access operations of the memories to perform mosaic processing of an input image.Type: GrantFiled: June 7, 1995Date of Patent: August 17, 1999Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Ichikawa, Yoshinori Ikeda, Koichi Katoh, Mitsuru Kurita, Yasumichi Suzuki, Toshiyuki Kitamura
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Patent number: 5617224Abstract: A copying apparatus includes an input device for inputting image data, a processing circuit for performing mosaic processing of the input image data, and a reproduction circuit for reproducing an image based on the processed image data. The processing circuit divides the input image data into a plurality of block areas and paints each block area with a uniform color according to the image data in the area so that the resolution of the image data is lower than the resolution of the original image.Type: GrantFiled: February 3, 1994Date of Patent: April 1, 1997Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Ichikawa, Yoshinori Ikeda, Koichi Katoh, Mitsuru Kurita, Yasumichi Suzuki, Toshiyuki Kitamura
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Patent number: 5585945Abstract: There is provided an image processing system in which when two images are synthesized, a first image is transmitted from a first image processing section to a second image processing section and a third image is obtained by synthesizing the first and second images, wherein the system has means for adding image effective area information for synthesization and for transmitting simultaneously with the first image information, and the image synthesization is executed on the basis of the image effective area information.Type: GrantFiled: February 16, 1993Date of Patent: December 17, 1996Assignee: Canon Kabushiki KaishaInventors: Yoshinori Ikeda, Koichi Katoh, Masanori Sakai
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Patent number: 5368972Abstract: A method of preparing composite particles is disclosed, which comprises the steps of dispersing matrix organic resin particles having a polar group on a surface thereof in a hydrophilic organic liquid, water or mixture thereof to prepare a dispersion of the matrix organic resin particles; dispersing a wax in a hydrophilic organic liquid, water or mixture thereof by use of a nonionic surface active agent to prepare an emulsion of the wax; mixing the dispersion of the matrix organic resin particles and the emulsion of the wax in the presence of a surface active agent with a polarity opposite to that of the polar group on the matrix organic resin particles to obtain a dispersion in which finely-divided particles of the wax are caused to adhere to the surface of the matrix particles; and heating the dispersion to fix the finely-divided particles of the wax on the surface of the matrix organic resin particles.Type: GrantFiled: February 11, 1993Date of Patent: November 29, 1994Assignee: Ricoh Company, Ltd.Inventors: Hiroshi Yamashita, Akihiro Kotsugai, Yoichiro Watanabe, Koichi Katoh, Hiromitsu Kawase
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Patent number: 5311336Abstract: This invention provides an image processing apparatus provided with an outline extracting section for extracting an outline of an input image and a color converting section for converting the color of the outline extracted into a predetermined color. This apparatus is therefore capable of extracting the outline of an input image, applying color conversion to the outline extracted, and emphasizing a pattern such as a character, a graphic pattern or the like. The apparatus is further provided with a converting-color designating section for designating a converting color to be applied to the outline, a color detecting section for detecting a portion having a predetermined color in the input image, and a region designating section for designating a predetermined region in the input image. Accordingly, the outline alone can be independently processed so that an outlined character, a shaded character or the like can be formed.Type: GrantFiled: October 20, 1992Date of Patent: May 10, 1994Assignee: Canon Kabushiki KaishaInventors: Mitsuru Kurita, Yoshinori Ikeda, Yasumichi Suzuki, Koichi Katoh, Hiroyuki Ichikawa
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Patent number: 5296946Abstract: There is provided a color image processing apparatus in which, by making use of an image reading apparatus of a digital full-color copying apparatus, the designated color to be obtained after conversion is input and stored as component ratio of color-separated image data, and monochromatic image data proportional to the gradation levels, e.g., density, lightness, luminance and so forth are obtained from the color separated image data produced from the original image, the monochromatic image data thus obtained being converted into the color separation data corresponding to the component ratio of the designated color to be obtained after conversion, thereby making it possible to preserve the hue of the designated color and to effect color conversion to the designated color having gradation proportional to the gradation of the original image.Type: GrantFiled: August 31, 1992Date of Patent: March 22, 1994Assignee: Canon Kabushiki KaishaInventors: Toshihiro Kadowaki, Tetsuya Ohnishi, Koichi Katoh, Yasumichi Suzuki, Toshio Honma
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Patent number: 5267031Abstract: There is provided a color image processing apparatus comprising color conversion circuit for converting image data to a desired color, feature extraction circuit for extracting a feature of the image data and image correction circuit for correcting the image data on the basis of the feature extraction circuit, characterized in that a color conversion processing is executed prior to extraction of feature from the image data.Type: GrantFiled: September 19, 1990Date of Patent: November 30, 1993Assignee: Canon Kabushiki KaishaInventors: Koichi Katoh, Yoshinori Ikeda, Mitsuru Kurita, Hiroyuki Ichikawa
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Patent number: 5244765Abstract: A toner for developing latent electrostatic images which comprises a binder resin comprising a styrene polymer or a copolymer thereof, a releasing agent, dispersed in the above binder resin, comprising a low-molecular-weight polypropylene with a weight-average molecular weight of 3000 to 25000, and a coloring agent, dispersed in the above binder resin, with the styrene polymer or copolymer thereof being contained in a ratio of 10-50% and the low-molecular-weight polypropylene in a ratio of 5-60% at a surface portion of the above toner measured by the electron spectroscopy for chemical analysis (ESCA), and a maximum particle diameter of the low-molecular-weight polypropylene contained in the releasing agent being 5000 .ANG. or less.Type: GrantFiled: July 13, 1992Date of Patent: September 14, 1993Assignee: Ricoh Company, Ltd.Inventors: Koichi Katoh, Masami Tomita, Tomoe Hagiwara
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Patent number: 5140413Abstract: An image processing apparatus includes a first indicator for indicating movement of an objective color image, a second indicator for indicating conversion of a specific color in the objective color image and a processor for moving the objective color image in accordance with the indication by the first indicator, and for performing the conversion of the specific color in the objective color image in accordance with the indication by the second indicator.Type: GrantFiled: April 18, 1991Date of Patent: August 18, 1992Assignee: Canon Kabushiki KaishaInventors: Yasumichi Suzuki, Yoshinori Ikeda, Koichi Katoh, Tetsuya Ohnishi, Toshihiro Kadowaki, Toshio Honma
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Patent number: 5034806Abstract: An image processing apparatus includes first and second input units for inputting an image data, a memory for storing first image data input by the first or second input unit, and a processor for processing second image data input by the first or second unit using the image data stored in the memory.Type: GrantFiled: September 18, 1990Date of Patent: July 23, 1991Assignee: Canon Kabushiki KaishaInventors: Yoshinori Ikeda, Koichi Katoh, Mitsuru Kurita, Hiroyuki Ichikawa
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Patent number: 5021876Abstract: There is provided an image processing apparatus for modulating a concentration of input image data, comprising: an inputting device to input image data; a RAM to store first image data input by the inputting device; a processing unit to execute a modulating process to at least one area such as a non-rectangular area in second image data input by the inputting device by using the first image data stored in the RAM; and a detector to detect a predetermined color of the second image data. The area is specified by the color detected by the detector. The inputting device includes a CCD for reading an original and generating RGB color component signals. With this apparatus, a texture process is executed to at least one non-rectangular area and the result can be output in a real-time manner.Type: GrantFiled: September 18, 1990Date of Patent: June 4, 1991Assignee: Canon Kabushiki KaishaInventors: Mitsuru Kurita, Yoshinori Ikeda, Yasumichi Suzuki, Koichi Katoh, Hiroyuki Ichikawa, Toshiyuki Kitamura, Toshihiro Kadowaki
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Patent number: 4996591Abstract: There is provided a color image processing apparatus in which, by making use of an image reading apparatus of a digital full-color copying apparatus, the designated color to be obtained after conversion is input and stored as component ratio of color-separated image data, and monochromatic image data proportional to the gradation levels, e.g., density, lightness, luminance and so forth are obtained from the color separated image data produced from the original image, the monochromatic image data thus obtained being converted into the color separation data corresponding to the component ratio of the designated color to be obtained after conversion, thereby making it possible to preserve the hue of the designated color and to effect color conversion to the designated color having gradation proportional to the gradation of the original image.Type: GrantFiled: May 13, 1988Date of Patent: February 26, 1991Assignee: Canon Kabushiki KaishaInventors: Toshihiro Kadowaki, Tetsuya Ohnishi, Koichi Katoh, Yasumichi Suzuki, Toshio Honma
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Patent number: 4982277Abstract: There is disclosed a color image processing apparatus comprising color conversion circuit for converting image data to a desired color, feature extraction circuit for extracting a feature of the image data and image correction circuit for correcting the image data on the basis of the feature extraction circuit, characterized in that a color conversion processing is executed prior to extraction of feature from the image data.Type: GrantFiled: November 14, 1989Date of Patent: January 1, 1991Assignee: Canon Kabushiki KaishaInventors: Koichi Katoh, Yoshinori Ikeda, Mitsuru Kurita, Hiroyuki Ichikawa
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Patent number: RE43636Abstract: A tool, attachable to a spindle of a machine tool and capable of changing independently a rotational speed of a cutting tool from that of the spindle, provided with a cutting tool for machining a workpiece, an electric motor for driving the machining tool, a generator for generating electric power to drive the electric motor by the rotation of the spindle, a tool holding part for rotatably holding the cutting tool, a casing for holding the electric motor, the generator, the tool attachment part, and the tool holding part, and a locking part for preventing rotation of the casing by engagement with a non-rotating part of the machine tool. A tool includes an AC generator, an AC motor and a case holding the generator and motor such that the generator and the motor are arranged in the case along a center axis and a longitudinal direction of a rotatable portion of the generator.Type: GrantFiled: September 10, 2007Date of Patent: September 11, 2012Assignee: Toshiba Kikai Kabushiki KaishaInventors: Koichi Katoh, Yasunori Katoh