Patents by Inventor Akihiko Machida
Akihiko Machida 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: 6943815Abstract: A thermal printer in which color thermosensitive recording material is used is provided. A thermal head records an image to the recording material by applying heat thereto. One or two photo fixing xenon flash lamps apply electromagnetic rays to the recording material, to fix the image. The electromagnetic rays are emitted in the first and second wavelength ranges, and are ultraviolet or visible. A controller changes over electromagnetic rays received by the recording material from the xenon flash lamps. The controller, when in a first step, sets the electromagnetic rays in the first wavelength range by means of a UV absorbing filter, to fix a first coloring layer for yellow. In a second step next to the first, the electromagnetic rays are set in the second wavelength range, to fix a second coloring layer for magenta.Type: GrantFiled: February 28, 2003Date of Patent: September 13, 2005Assignee: Fuji Photo Film Co., Ltd.Inventors: Akihiko Machida, Nobuo Katsuma, Kenichi Inatsuki
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Patent number: 6870558Abstract: A yellow luminous-element array, which is an optical fixing unit, includes a large number of yellow LEDs emitting ultraviolet rays. The LEDs in each of lines extending in a feeding direction are connected in series. Integral illuminance of each line is adjusted by changing electrical energy to be supplied to the respective lines. The integral illuminance of each line extending in the feeding direction is measured to obtain illuminance distribution relative to a scanning direction when the yellow luminous-element array is examined at the time of manufacture thereof. The integral illuminance of each line is corrected so as to even the illuminance distribution.Type: GrantFiled: January 24, 2003Date of Patent: March 22, 2005Assignee: Fuji Photo Film Co., Ltd.Inventors: Nobuo Katsuma, Akihiko Machida
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Publication number: 20040080601Abstract: The thermosensitive color recording paper is rolled around a roll core. On a side of the roll core, a code of fixing sensitivity of the thermosensitive color recording paper to a fixing light is depicted. The code is read by a code reading device, and a code data of the code is input in a controller. The controller obtains from a data table memorized in a memory a light quantity of the fixing light that corresponds to the code data. On the basis of the light quantity, the target luminance of fixing lamps and a target feeding velocity of the thermosensitive color recording paper are determined so as to be adequate for a sort of the thermosensitive color recording paper. In the luminance and the feeding velocity, the optical fixation of said each mono-color image is performed.Type: ApplicationFiled: October 23, 2003Publication date: April 29, 2004Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Akihiko Machida, Nobuo Katsuma
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Publication number: 20040036759Abstract: A xenon lamp is used as a light source of an optical fixing unit. A discharge stop switch for compulsorily stopping discharge of the xenon lump is provided. Further, a timer circuit for measuring a discharge time of the xenon lamp is provided. The timer circuit is activated after a predetermined time, which is set in advance, to stop the discharge of the xenon lamp. The inside of a printer is prevented from becoming a high-temperature state caused by ingredients of an infrared region of the xenon lamp. It is possible to improve efficiency of optical fixation.Type: ApplicationFiled: August 15, 2003Publication date: February 26, 2004Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Nobuo Katsuma, Kenichi Inatsuki, Akihiko Machida
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Publication number: 20030164872Abstract: A thermal printer in which color thermosensitive recording material is used is provided. A thermal head records an image to the recording material by applying heat thereto. One or two photo fixing xenon flash lamps apply electromagnetic rays to the recording material, to fix the image. The electromagnetic rays are emitted in the first and second wavelength ranges, and are ultraviolet or visible. A controller changes over electromagnetic rays received by the recording material from the xenon flash lamps. The controller, when in a first step, sets the electromagnetic rays in the first wavelength range by means of a UV absorbing filter, to fix a first coloring layer for yellow. In a second step next to the first, the electromagnetic rays are set in the second wavelength range, to fix a second coloring layer for magenta.Type: ApplicationFiled: February 28, 2003Publication date: September 4, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Akihiko Machida, Nobuo Katsuma, Kenichi Inatsuki
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Publication number: 20030142195Abstract: A yellow luminous-element array, which is an optical fixing unit, comprises a large number of yellow LEDs emitting ultraviolet rays. The LEDs in each of lines extending in a feeding direction are connected in series. Integral illuminance of each line is adjusted by changing electrical energy to be supplied to the respective lines. The integral illuminance of each line extending in the feeding direction is measured to obtain illuminance distribution relative to a scanning direction when the yellow luminous-element array is examined at the time of manufacture thereof. The integral illuminance of each line is corrected so as to even the illuminance distribution.Type: ApplicationFiled: January 24, 2003Publication date: July 31, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Nobuo Katsuma, Akihiko Machida
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Patent number: 6583555Abstract: A flat fluorescent lamp has a vessel or housing including first and second substrates opposed to each other at a small distance, and having discharge gas enclosed therein. A first planar electrode layer being transparent is disposed on an inner surface of the first substrate. A second planar electrode layer is disposed on an inner surface of the second substrate, for electrical discharge in cooperation with the first planar electrode layer. First and second dielectric layers are disposed on respectively the inner surfaces of the first and second substrates to cover the first and second planar electrode layers. First and second fluorescent layers are overlaid on respectively inner surfaces of the first and second dielectric layers, for emitting electromagnetic rays upon the electrical discharge between the first and second planar electrode layers. A pattern of plural projections is formed with the inner surface of the second dielectric layer.Type: GrantFiled: August 22, 2001Date of Patent: June 24, 2003Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroyuki Matsukawa, Nobuo Katsuma, Yoshihiro Yamaguchi, Hiroshi Fukuda, Satoru Ikeya, Akihiko Machida
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Publication number: 20020024294Abstract: A flat fluorescent lamp has a vessel or housing including first and second substrates opposed to each other at a small distance, and having discharge gas enclosed therein. A first planar electrode layer being transparent is disposed on an inner surface of the first substrate. A second planar electrode layer is disposed on an inner surface of the second substrate, for electrical discharge in cooperation with the first planar electrode layer. First and second dielectric layers are disposed on respectively the inner surfaces of the first and second substrates to cover the first and second planar electrode layers. First and second fluorescent layers are overlaid on respectively inner surfaces of the first and second dielectric layers, for emitting electromagnetic rays upon the electrical discharge between the first and second planar electrode layers. A pattern of plural projections is formed with the inner surface of the second dielectric layer.Type: ApplicationFiled: August 22, 2001Publication date: February 28, 2002Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Hiroyuki Matsukawa, Nobuo Katsuma, Yoshihiro Yamaguchi, Hiroshi Fukuda, Satoru Ikeya, Akihiko Machida