Patents by Inventor Tsuyoshi Orikasa
Tsuyoshi Orikasa 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: 6116714Abstract: A printing head has a plurality of heater boards, each of which includes a shift register to which printing data and selection data for selecting preheating pulse signals are applied as inputs, a latch circuit for latching the printing data, a selection-data latch circuit for latching the selection data, a selection circuit for selecting any one of a plurality of preheating pulse signals inputted in accordance with the latched selection data, and a plurality of heating resistors driven by the printing data or preheating pulse signals. Correction data, obtained by a head correcting apparatus, for performing printing at an average density by correcting the characteristics of each heater board is stored in a memory of the printing head. A printing apparatus decides the selection data in accordance with the correction data and sets the selection data in the selection-data latch circuit.Type: GrantFiled: March 2, 1995Date of Patent: September 12, 2000Assignee: Canon Kabushiki KaishaInventors: Yoshiyuki Imanaka, Masaki Inaba, Masami Ikeda, Yutaka Koizumi, Tsuyoshi Orikasa, Tatsuo Furukawa, Toshio Kashino, Hideaki Kishida, Seiichiro Karita, Shuji Koyama, Haruhiko Terai, Kimiyuki Hayasaki, Shuichi Katao, Akira Goto, Kouichi Omata, Hiroyuki Maru, Masaaki Izumida, Yuji Kamiyama, Takayuki Ono
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Patent number: 6113223Abstract: An ink jet recording apparatus includes a liquid passage for ejection of ink; a liquid chamber for supplying ink to the passage; a device for mounting the recording head on the ink jet recording apparatus at an angle not more than 45 degrees relative to the horizontal plane; wherein the chamber has an internal surface which is slanted in a direction from an ink inlet thereof toward the liquid passage at the angle of 5-40 degrees relative to an extension of the liquid passage.Type: GrantFiled: February 18, 1997Date of Patent: September 5, 2000Assignee: Canon Kabushiki KaishaInventors: Shigeaki Tanaka, Nobuyuki Kuwabara, Akira Goto, Takashi Watanabe, Kunihiko Maeoka, Masaaki Izumida, Koichi Sato, Tsuguhiro Fukuda, Hiroshi Sugitani, Yoshifumi Hattori, Masami Ikeda, Asao Saito, Kazuaki Masuda, Akio Saito, Tsuyoshi Orikasa, Takashi Ohba, Hiroshi Nakagomi, Teruo Arashima, Jun Kawai, Tsutomu Abe, Toshio Kashino, Makiko Kimura, Hideo Saikawa, Seiichiro Karita
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Patent number: 6059400Abstract: An ink jet head includes a base member, a first member having recesses and coupled with the base member to form ink passages using the recesses and a second member integral with the first member and extending at an angle from an end of the first member, the second member having ink ejection outlets communicating with the ink passages.Type: GrantFiled: October 14, 1997Date of Patent: May 9, 2000Assignee: Canon Kabushiki KaishaInventors: Makiko Kimura, Toshio Kashino, Teruo Arashima, Hiroshi Sugitani, Yoshifumi Hattori, Masami Ikeda, Asao Saito, Kazuaki Masuda, Akio Saito, Tsuyoshi Orikasa, Takashi Ohba, Kunihiko Maeoka, Jun Kawai, Tsutomu Abe, Hiroshi Nakagomi
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Ink jet head, ink jet cartridge incorporating ink jet, and ink jet apparatus incorporating cartridge
Patent number: 6048058Abstract: An ink jet head includes a plurality of ejection orifices for ejecting ink; a common liquid chamber for storing temporarily the ink to be supplied to each of the ejection orifices; a plurality of ink passages, being separated by liquid passage walls, and each of which connects one of the ejection orifices to the common liquid chamber; and a plurality of energy generating elements provided one for one in each of the ink passages for generating energy to eject the ink from each of the ejection orifices; wherein the ejection orifices are grouped into a plurality of control blocks comprising a predetermined number of the ejection orifices in sequence so that the energy generating elements are driven by the block; and wherein walls are provided in the common liquid chamber, at the dividing lines between the control blocks, for impeding the ink movement in the liquid chamber, between the adjacent blocks.Type: GrantFiled: April 15, 1997Date of Patent: April 11, 2000Assignee: Canon Kabushiki KaishaInventors: Masami Kasamoto, Hiroshi Sugitani, Yasuroh Kashima, Kazuaki Masuda, Tsuyoshi Orikasa, Hiroyuki Ishinaga, Makiko Kimura, Seiichiro Karita, Jun Kawai, Teruo Arashima, Yuji Kamiyama -
Patent number: 5992981Abstract: An ink jet head includes a heater board having a substrate on which a plurality of energy generating elements for generating energy utilized to discharge ink are provided, and a wall member joined to the heater board. The wall member has a plurality of flow passage walls which partially define flow passages, and the energy generated by the energy generating element acts through the flow passage so as to act on the ink to discharge the ink. The flow passages are fully defined when the heater board is joined to the wall member. A recessed portion provided in the heater board of the ink jet head is positioned between adjoining energy generating elements. The recessed portion has a bottom surface located at a position which is lower than a position for a heat acting surface of the heater board along which heat is transmitted to the ink. The flow passage walls of the wall member abut the heater board at the bottom surface.Type: GrantFiled: July 27, 1994Date of Patent: November 30, 1999Assignee: Canon Kabushiki KaishaInventors: Hiroshi Sugitani, Masami Kasamoto, Tsuyoshi Orikasa, Masashi Miyagawa, Jun Kawai, Teruo Arashima, Masaaki Izumida
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Patent number: 5964032Abstract: This invention relates to an assembly method, for head units mounting a plurality of head chips for discharging ink onto a frame, in which relative positions among head chips are determined and which the head chips are secured onto the frame so as to maintain the relative positions, to an assembly apparatus for head units based on the method, and further to an ink jet output apparatus incorporating those head units. According to this invention, correction by each image output will not be required because the head unit is able to complete adjustments of shifts of arrival positions of ink at its assembling stage, thereby making the apparatus compact and simple. In addition, correction of positional shifts will not be required when the heads are replaced, so that maintenance of the ink jet output apparatus will be easy.Type: GrantFiled: September 22, 1997Date of Patent: October 12, 1999Assignee: Canon Kabushiki KaishaInventors: Tsuyoshi Orikasa, Tsunenobu Satoi, Seiji Suzuki, Seiichiro Karita, Masahiko Higuma
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Patent number: 5940957Abstract: A common recess, grooves, and common recess and/or column members in the grooves are formed on a base board at the same time, and such board is made a second base board, which is coupled to a first base board on which elements for liquid discharging energy are formed; hence obtaining an ink jet recording head provided with a filter unit in an arbitrary position in the region formed by the ink paths and the common liquid chamber. The filter unit can be processed by a single processing in the ink paths and/or the common liquid chamber to make it possible to prevent disabled discharge from taking place due to dust particles intermingled at the time of head manufacture. In this way, the discharging stability is enhanced, making a high-speed printing possible. A workpiece is efficiently processed by a single processing which is performed to process a three-dimensional configuration with respect to the direction in which the laser beam is irradiated.Type: GrantFiled: March 2, 1995Date of Patent: August 24, 1999Assignee: Canon Kabushiki KaishaInventors: Akira Goto, Masaki Inaba, Yutaka Koizumi, Tsuyoshi Orikasa, Toshio Kashino, Seiichiro Karita, Shuji Koyama, Haruhiko Terai, Kimiyuki Hayasaki, Kouichi Omata, Kiyomitsu Kudo, Takayuki Ono, Shin Ishimatsu
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Patent number: 5930895Abstract: An ink jet recording head is produced by forming in a first substrate a plurality of orifices for ejecting an ink droplet and a reference object for registration; forming in a second substrate ejection energy generating elements for supplying energy for ejecting the ink placed in liquid passages communicating with the orifices; and joining the first substrate and the second substrate together on the basis of the reference object for registration.Type: GrantFiled: March 20, 1997Date of Patent: August 3, 1999Assignee: Canon Kabushiki KaishaInventors: Tsuyoshi Orikasa, Fumio Ichikawa, Kazuaki Masuda, Kunihiko Maeoka, Takashi Watanabe, Osamu Sato, Akira Goto
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Patent number: 5933163Abstract: An ink jet recording head for effecting recording with ejection of ink includes a plurality of element substrates each having a plurality of ejection energy generating elements for ejecting the ink; a base plate for supporting the plurality of element substrates on one surface thereof in an array; a grooved member having a length corresponding to a length of the array and having passages corresponding to the ejection energy generating elements of the plurality of element substrates.Type: GrantFiled: November 28, 1997Date of Patent: August 3, 1999Assignee: Canon Kabushiki KaishaInventors: Yutaka Koizumi, Hiroshi Sugitani, Masaki Inaba, Masami Ikeda, Masami Kasamoto, Tsuyoshi Orikasa, Makiko Kimura, Toshio Kashino, Seiichiro Karita, Shuji Koyama, Haruhiko Terai, Kimiyuki Hayasaki, Akira Goto, Kouichi Omata, Takayuki Ono
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Patent number: 5888333Abstract: An ink jet head manufacturing method, includes steps of disposing a plurality of heater boards each having a plurality of energy generating elements, on a base plate; mounting on the base plate a top plate having a plurality of ink passage forming grooves corresponding to respective energy generating elements; the improvement residing in that in said disposing step, said heater boards are directly disposed with a gap between adjacent ones, and that in said mounting step, the top plate is bonded on the base plate.Type: GrantFiled: October 31, 1995Date of Patent: March 30, 1999Assignee: Canon Kabushiki KaishaInventors: Takayuki Ono, Masaki Inaba, Tsuyoshi Orikasa, Haruhiko Terai, Kiyomitsu Kudo
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Patent number: 5850238Abstract: A sealed ink jet assembly which is removable from an ink jet apparatus includes an ink jet head which has an ejection outlet found at a first surface of the ink jet head, an energy generating element for generating energy to eject ink through the ejection outlet, and an electric contact portion for supplying an electric signal from the ink jet apparatus to the energy generating element by mounting the electric contact portion to the ink jet apparatus. The electric contact portion is provided on the surface of the ink jet head which differs from the first surface, and an integral sealing member covers both the ink ejection outlet and the electric contact portion. The integral sealing member is removed when the assembly is mounted onto the ink jet apparatus.Type: GrantFiled: August 13, 1993Date of Patent: December 15, 1998Assignee: Canon Kabushiki KaishaInventors: Seiichiro Karita, Hideo Saikawa, Hiroshi Sugitani, Yoshifumi Hattori, Masami Ikeda, Asao Saito, Kazuaki Masuda, Akio Saito, Tsuyoshi Orikasa, Toshiaki Nagashima, Norio Hikake
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Patent number: 5828496Abstract: An illumination optical system includes a beam dividing device for dividing a radiation beam into plural illumination beams, and an optical arrangement for superposing the illumination beams one upon another on a surface to be illuminated, the optical arrangement having different focal distances in substantially orthogonal first and second directions, and the optical arrangement being adapted to focus each of the illumination beams on the surface in the first direction while defocusing the same in the second direction, whereby a linear illumination region is defined on the surface.Type: GrantFiled: December 21, 1994Date of Patent: October 27, 1998Assignee: Canon Kabushiki KaishaInventors: Masayuki Nishiwaki, Hiroshi Sugitani, Tsuyoshi Orikasa, Akira Goto
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Patent number: 5815184Abstract: An ink container for storing ink and an ink jet apparatus having such an ink container is provided. The ink container has an ink tank providing an enclosed space within an inner wall of the tank. The ink container is filled with inner and outer porous members having open pores for holding ink. The inner porous members are disposed within the enclosed space so as to only contact and press against other inner or outer porous members or both. The outer porous members are disposed within the enclosed space so as to contact and press against the inner porous members and the inner wall of the ink tank. This arrangement of inner and outer porous members within the ink container prevents an uneven compression distribution which occurs when conventional porous members are inserted into ink containers or when ink containers containing such conventional porous members suffer impacts.Type: GrantFiled: September 15, 1997Date of Patent: September 29, 1998Assignee: Canon Kabushiki KaishaInventors: Toshihiko Ujita, Hiroshi Sugitani, Tsuyoshi Orikasa, Osamu Sato, Masahiko Higuma, Yasuo Kotaki, Jun Hinami
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Patent number: 5774151Abstract: A liquid ejecting head for a liquid ejecting apparatus for performing a recording operation by ejecting liquid from the liquid ejecting head includes as essential components a base plate having a plurality of liquid ejecting elements, and a grooved member having a plurality of grooves formed thereon corresponding to the liquid ejecting elements. The grooved member is connected to the base plate and composed of a grooved element and a supporting member. A liquid ejecting apparatus operable for performing a recording operation includes as essential components a liquid ejecting head of the foregoing type and a signal supplying unit for supplying,a series of signals to the liquid ejecting head for activating a plurality of liquid ejecting elements.Type: GrantFiled: September 11, 1997Date of Patent: June 30, 1998Assignee: Canon Kabushiki KaishaInventors: Hiroshi Sugitani, Masaki Inaba, Masami Ikeda, Yutaka Koizumi, Masami Kasamoto, Tsuyoshi Orikasa, Makiko Kimura, Toshio Kashino, Seiichiro Karita, Haruhiko Terai, Akira Goto
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Patent number: 5703632Abstract: An ink jet head includes a passage-forming member providing a plurality of ink passages and an orifice plate having an array of ejection outlets in communication with respective ink passages. The orifice plate has a plurality of edge portions and the ejection outlets are arranged along a line that runs parallel to at least one of the edge portions and intersects opposing edge portions at crossing points. A confining member is configured to hold the orifice plate against the passage-forming member only in areas proximate to the crossing points.Type: GrantFiled: December 9, 1996Date of Patent: December 30, 1997Assignee: Canon Kabushiki KaishaInventors: Teruo Arashima, Makiko Kimura, Toshio Kashino, Hiroshi Sugitani, Yoshifumi Hattori, Masami Ikeda, Asao Saito, Kazuaki Masuda, Akio Saito, Tsuyoshi Orikasa
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Patent number: 5657539Abstract: An ink jet recording head is produced by forming in a first substrate a plurality of orifices for ejecting an ink droplet and a reference object for registration; forming in a second substrate ejection energy generating elements for supplying energy for ejecting the ink placed in liquid passages communicating with the orifices; and joining the first substrate and the second substrate together on the basis of the reference object for registration.Type: GrantFiled: September 22, 1994Date of Patent: August 19, 1997Assignee: Canon Kabushiki KaishaInventors: Tsuyoshi Orikasa, Fumio Ichikawa, Kazuaki Masuda, Kunihiko Maeoka, Takashi Watanabe, Osamu Sato, Akira Goto
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Patent number: 5623287Abstract: An ink container, as well as a method of making the same, which has ink absorbing material for retaining ink, a casing for holding the ink absorbing material, an ink supply port through which ink is withdrawn from the absorbing material, and an air vent. The air vent and ink supply port are each provided adjacent to different longitudinal halves of the ink absorbing material, and the casing is initially filled with an amount of ink which is larger than the quantity of ink which can be retained by the ink absorbing material. Then, ink adjacent to the air vent is removed to such an extent that the casing contains the quantity of the ink which the ink absorbing material can retain. Thus, ink is retained at a higher density adjacent to the ink supply port than adjacent to the air vent.Type: GrantFiled: May 30, 1995Date of Patent: April 22, 1997Assignee: Canon Kabushiki KaishaInventors: Hideo Saikawa, Seiichiro Karita, Toshio Kashino, Akio Saito, Hiroshi Nakagomi, Teruo Arashima, Makiko Kimura, Hiroshi Sugitani, Yoshifumi Hattori, Masami Ikeda, Masaaki Izumida, Shigeaki Tanaka, Nobuyuki Kuwabara, Asao Saito, Kazuaki Masuda, Tsuyoshi Orikasa
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Patent number: 5567373Abstract: The invention provides a method and apparatus for manufacturing a liquid container having an enclosed space within an inner wall of the liquid container, the enclosed space filled with a plurality of porous members. The plurality of porous members include a plurality of inner porous members and a plurality of outer porous members. The method includes the step of packing the porous members into the enclosed space so that the inner porous members only contact and press against other inner porous members and/or outer porous members, and the outer porous members contact and press against the inner porous members and the inner wall of the liquid container. The method also comprises a step of compressing the porous members. The apparatus has compressing means for compressing the porous members and packing means for packing the porous members into the liquid container.Type: GrantFiled: January 27, 1995Date of Patent: October 22, 1996Assignee: Canon Kabushiki KaishaInventors: Osamu Sato, Hiroshi Sugitani, Tsuyoshi Orikasa, Toshihiko Ujita, Masahiko Higuma, Yasuo Kotaki, Jun Hinami
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Patent number: 5508725Abstract: An ink jet head includes a first member provided with an ejection energy generating element for generating energy contributable to ejection of ink; a second member provided with a recess for defining an ink passage with a trapezoidal cross-section by being coupled with the first member, corresponding to the ejection energy generating element; and a third member provided with an ejection outlet which communicates with the ink passage and through which the ink is ejected.Type: GrantFiled: October 3, 1994Date of Patent: April 16, 1996Assignee: Canon Kabushiki KaishaInventors: Akira Goto, Kazuaki Masuda, Takashi Watanabe, Kunihiko Maeoka, Nobuyuki Kuwabara, Shigeaki Tanaka, Masaaki Izumida, Koichi Sato, Tsuguhiro Fukuda, Hiroshi Sugitani, Yoshifumi Hattori, Masami Ikeda, Asao Saito, Akio Saito, Tsuyoshi Orikasa
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Patent number: 5500666Abstract: A recording head cartridge includes a recording head for ejecting recording liquid in the form of a droplet thereof; a container for containing the recording liquid; a communicating pipe for substantially balancing pressure in the container with an ambient pressure; a blocking plate disposed adjacent an inside opening of the pipe at a position away from the opening.Type: GrantFiled: August 9, 1994Date of Patent: March 19, 1996Assignee: Canon Kabushiki KaishaInventors: Yoshifumi Hattori, Seiichiro Karita, Hideo Saikawa, Toshio Kashino, Akio Saito, Hiroshi Nakagomi, Teruo Arashima, Makiko Kimura, Hiroshi Sugitani, Masami Ikeda, Asao Saito, Kazuaki Masuda, Tsuyoshi Orikasa