Patents by Inventor Koyo Midorikawa
Koyo Midorikawa 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: 5682187Abstract: An ink jet recording head, which can be used in a recording apparatus, is manufactured by preparing a first base plate provided with an energy generating structure for generating energy to discharge ink, preparing a second base plate provided with a discharge opening plate member on which are to be formed ink discharge openings for discharging the ink and recessed portions for forming ink flow paths, the ink flow paths being communicated with the discharge openings, and applying an ink repellant treatment on a surface of the discharge opening plate at a side where the ink is to be discharged in at least an area where the discharge openings are to be formed.Type: GrantFiled: October 31, 1996Date of Patent: October 28, 1997Assignee: Canon Kabushiki KaishaInventors: Takashi Watanabe, Kazuaki Masuda, Akira Goto, Hiroshi Kono, Takashi Kanzaki, Toshio Kashino, Akio Saito, Koyo Midorikawa, Toru Okumura, Masami Ikeda, Nobuyuki Kuwabara
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Patent number: 5208604Abstract: The present invention relates to a method for manufacturing an ink jet recording head having an ink path communicated with a discharge opening, a discharge energy generating element disposed in the ink path and a discharge opening plate on which the discharge opening is formed. The discharge opening plate is attached to an end surface of the ink path. The discharge opening is formed by irradiating an excimer laser light on the discharge opening plate from a side of the plate which is attached to the ink path.Type: GrantFiled: August 26, 1991Date of Patent: May 4, 1993Assignee: Canon Kabushiki KaishaInventors: Takashi Watanabe, Kazuaki Masuda, Akira Goto, Hiroshi Kono, Takashi Kanzaki, Toshio Kashino, Akio Saito, Koyo Midorikawa, Toru Okumura, Masami Ikeda, Nobuyuki Kuwabara
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Patent number: 4426132Abstract: A projecting device is disclosed which has plural element lens systems arranged in at least two rows in a staggered fashion in two grooved blocks, with one row displaced relative to the adjacent row by a distance equal to half the pitch of the adjacent row. Each lens system is composed of at least one bar lens for imaging a part of the object as a part of the corresponding image. An opaque elastomer material fills the space between the rows for preventing light from entering into the space while allowing the positional relation between the rows to be fine-adjusted.Type: GrantFiled: June 7, 1983Date of Patent: January 17, 1984Assignee: Canon Kabushiki KaishaInventors: Atsuo Tsunoda, Koyo Midorikawa, Hidetoshi Murase, Mikio Suzuta, Masazumi Moriwaki, Noritaka Mochizuki, Setsuo Minami, Yoshiya Matsui
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Patent number: 4402572Abstract: This specification discloses a projection device in which bar lenses of plastic, each having a great length in the direction of its optical axis as compared with its effective diameter, of the lenses are arranged in the form of a predetermined array. The bar lenses are shielded from the outside atmosphere by a holding member capable of easily setting the lenses. Further, transparent plates, such as glass plates or the like, are provided at the incidence end and the emergence end to seal the holding member, so that there occurs no deterioration of the predetermined optical performance resulting from variations in the environmental humidity which would otherwise cause variations in the plastic material.Type: GrantFiled: July 8, 1980Date of Patent: September 6, 1983Assignee: Canon Kabushiki KaishaInventors: Atsuo Tsunoda, Koyo Midorikawa, Hidetoshi Murase, Mikio Suzuta, Masazumi Moriwaki, Noritaka Mochizuki, Setsuo Minami, Yoshiya Matsui
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Patent number: 4350431Abstract: A projecting device having an array, in a plane perpendicular to the optical axis, of plural element lens systems each axially provided with two bar lenses of an axial length larger than the effective diameter thereof, characterized by the presence of an intermediate ring positioned between two bar lenses for extracting the effective beam emerging from the first bar lens and entering the second bar lens and providing a determined light intensity distribution on the projection plane.Type: GrantFiled: July 8, 1980Date of Patent: September 21, 1982Assignee: Canon Kabushiki KaishaInventors: Noritaka Mochizuki, Setsuo Minami, Yoshiya Matsui, Atsuo Tsunoda, Koyo Midorikawa, Hidetoshi Murase, Mikio Suzuta, Masazumi Moriwaki
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Patent number: 4316665Abstract: In a slit exposure type copying machine, a projection device basically includes transmission type element lens systems each including a lens having a great length in the direction of the optic axis thereof as compared with the effective diameter thereof. A part area of an original is projected upon a predetermined part area on an image plane and the light intensity distribution of the projected part area has a predetermined central area controlled by lens aperture eclipse and extending diametrically from at least the optic axis and a marginal area lying outwardly of the central area and weak in light intensity. A plurality of such element lens systems are substantially equidistantly arranged in the lengthwise direction of the slit in a plane perpendicular to the optic axis so that the marginal areas in at least the element lens systems are superposed upon one another.Type: GrantFiled: December 6, 1979Date of Patent: February 23, 1982Assignee: Canon Kabushiki KaishaInventors: Noritaka Mochizuki, Setsuo Minami, Yoshiya Matsui, Koyo Midorikawa, Atsuo Tsunoda, Hidetoshi Murase, Mikio Suzuta, Masazumi Moriwaki
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Patent number: 4275962Abstract: This specification discloses a compact projection device in which lens systems extending in the direction of the optic axis for projecting a part area of an object upon a predetermined part area on an image plane (hereinafter referred to as element lens systems) are initially set by a lens holding member having groove portions or hole portions extending in the direction of the optic axis, the distributions of intensity of light of the element lens systems on the image plane are controlled by an aperture eclipse such that the intensity of light is weaker in the marginal area than at least in the central area, a plurality of such element lens systems are arranged in a predetermined direction in a plane perpendicular to the optic axis and the distributions of intensity of light of the element lens systems are suitably superposed upon one another at least in the marginal area to provide uniformity of the distribution of the exposure amount integrated in the scanning direction with respect to the lengthwise directType: GrantFiled: December 20, 1979Date of Patent: June 30, 1981Assignee: Canon Kabushiki KaishaInventors: Koyo Midorikawa, Atsuo Tsunoda, Hidetoshi Murase, Noritaka Mochizuki, Setsuo Minami, Yoshiya Matsui, Masazumi Moriwaki, Mikio Suzuta