Patents by Inventor Hisashi Miyazawa

Hisashi Miyazawa 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).

  • Ink cartridge
    Patent number: 6945641
    Abstract: In an ink cartridge (1), an opening of an ink flow groove 35 and an opening of an atmosphere communication recess 36 are formed in the front surface of a container main body (2), and sealed by a film (57), thereby constituting flow paths.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: September 20, 2005
    Assignee: Silicon Valley Bank
    Inventors: Yasuto Sakai, Hisashi Miyazawa, Satoshi Shinada
  • Ink cartridge and vacuum-packaging product containing the same
    Patent number: 6938997
    Abstract: An ink cartridge includes: an ink accommodating portion for holding ink; an air passage for making the ink accommodating portion communicate with the atmosphere; and a valve mechanism, provided in the air passage, including an air-releasing valve member for sealing a communication hole provided in a partition wall for separating an ink-accommodating-portion side that is a side close to the ink accommodating portion from an atmosphere side that is a side close to the atmosphere, in a direction from the ink-accommodating-portion side to the atmosphere side, wherein the air-releasing valve member has a contact portion for opening the air passage by receiving an external force from the atmosphere side to the ink-accommodating-portion side.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: September 6, 2005
    Assignee: Seiko Epson Corporation
    Inventors: Koichi Toba, Satoshi Shinada, Hisashi Miyazawa
  • Ink cartridge
    Publication number: 20050174404
    Abstract: An ink cartridge having a container for storing ink therein and having an ink supply port formed at a leading end side in an insertion direction of the container, a memory device disposed on a first of two opposite surfaces parallel to the insertion direction of the container, the memory device having an electrode for electrical connection to the recording device; a retaining member disposed on the first surface and located at a trailing end side relative to the memory device in the insertion direction, the retaining member serving to selectively engage with the recording device; and another retaining member disposed on the second surface and which also serves to selectively engage with the recording device.
    Type: Application
    Filed: February 18, 2005
    Publication date: August 11, 2005
    Inventors: Hisashi Miyazawa, Munehide Kanaya, Yasuto Sakai, Masaki Shimomura, Satoshi Nakata, Yoshihiro Koizumi, Hiroshige Owaki, Takeo Seino, Satoshi Shinada
  • Ink cartridge and method of ink injection thereinto
    Patent number: 6926396
    Abstract: An ink cartridge 1 is detachably connected to a head of a record apparatus and has a vessel main body 2 having an ink tank chamber 11 opened to the atmosphere in a state in which the head and the cartridge are connected and an ink end chamber (second ink storage chamber 16, etc.,) communicating with the ink tank chamber 11 and leading to the head. The vessel main body 2 is formed with a first opening 85 communicating with the ink tank chamber 11 and a second opening 86 communicating with the ink end chamber.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: August 9, 2005
    Assignee: Seiko Epson Corporation
    Inventors: Mutsuhiko Ota, Yukiharu Suda, Hisashi Koike, Satoshi Shinada, Michinari Tsukahara, Hisashi Miyazawa
  • Ink cartridge
    Publication number: 20050146581
    Abstract: An ink cartridge having a container for storing ink therein and having an ink supply port formed at a leading end side in an insertion direction of the container, a memory device disposed on a first of two opposite surfaces parallel to the insertion direction of the container, the memory device having an electrode for electrical connection to the recording device; a retaining member disposed on the first surface and located at a trailing end side relative to the memory device in the insertion direction, the retaining member serving to selectively engage with the recording device; and another retaining member disposed on the second surface and which also serves to selectively engage with the recording device.
    Type: Application
    Filed: February 15, 2005
    Publication date: July 7, 2005
    Inventors: Hisashi Miyazawa, Munehide Kanaya, Yasuto Sakai, Masaki Shimomura, Satoshi Nakata, Yoshihiro Koizumi, Hiroshige Owaki, Takeo Seino, Satoshi Shinada
  • Ink-jet recording device and ink supply unit suitable for it
    Publication number: 20050134661
    Abstract: Ink maintained at a negative pressure state is supplied to an ink-jet recording head via an ink supply mechanism constructed as a differential pressure valve having a coil spring and a movable membrane normally contacted elastically with a valve seat by the coil spring.
    Type: Application
    Filed: April 6, 2004
    Publication date: June 23, 2005
    Inventor: Hisashi Miyazawa
  • Ink cartridge for ink jet recording device
    Patent number: 6905199
    Abstract: An ink cartridge for an ink jet recording device, includes: a container having an ink supply port; at least two ink chambers partitioned in the container, one being located substantially in an upper section and the other being located substantially in a lower section; an ink suction passage connecting a bottom region of the lower section ink chamber to a bottom region of the upper section ink chamber; and a negative pressure generating mechanism provided to a flow passage connecting the upper section ink chamber to the ink supply port.
    Type: Grant
    Filed: April 29, 2004
    Date of Patent: June 14, 2005
    Assignee: Seiko Epson Corporation
    Inventors: Hisashi Miyazawa, Yasuto Sakai, Satoshi Shinada, Atsushi Kobayashi
  • Method and device for heating preform
    Patent number: 6906290
    Abstract: While blowing out cooling air to a preform which is biaxially stretched and blow molded into a bottle shape, heat sources are made operative by a high power and the first heating process as quick heating is performed to the preform. Subsequently, the heated preform is left as it is and a temperature adjusting process to reduce a temperature difference between an outer surface temperature and an inner surface temperature of the preform to a predetermined value or less is executed. The second heating process to heat the preform until the outer surface temperature is equal to a temperature which is slightly lower than a crystallization temperature of the PET is executed to the preform obtained after completion of the temperature adjusting process while blowing out the cooling air to the preform. Thus, the quick heating of the preform is safely accomplished without causing an overheating state.
    Type: Grant
    Filed: June 25, 2002
    Date of Patent: June 14, 2005
    Assignee: Yoshino Kogyosho Co., Ltd.
    Inventors: Hisashi Miyazawa, Daisuke Uesugi
  • Ink-jet printing apparatus and ink cartridge
    Patent number: 6886927
    Abstract: An ink cartridge for a printing apparatus providing ink to a print head through a tapered ink supply needle and removably attached to the print head. The ink cartridge includes an ink chamber for containing ink, an ink supply port, a packing member and a valve device. The ink supply port supplies ink from the ink chamber to the print head of the printing apparatus, the ink supply port comprising an external opening. The packing member is provided in the ink supply port and forms an ink channel for allowing a flow of ink. The packing member seals the ink supply needle of the printing apparatus by fitting therewith. The valve device is contained in the ink supply port and elastically abuts against the packing member. The valve device selectively opens and closes the ink channel in conjunction with the ink supply needle.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: May 3, 2005
    Assignee: Seiko Epson Corporation
    Inventors: Satoshi Shinada, Takeo Seino, Hisashi Miyazawa, Koichi Toba, Takahiro Naka, Minoru Usui, Atsushi Kobayashi, Hitoshi Hayakawa
  • Ink cartridge
    Patent number: 6871944
    Abstract: An ink cartridge may have an ink accommodating portion shaped to contain ink, an ink supply hole disposed at a bottom of the ink accommodating portion, and a valve unit including a movable valve portion and a fixed valve portion, the movable valve portion being oriented such that a flow of ink is regulated by a horizontal motion of the movable valve portion. The valve unit may further include a main portion and an auxiliary portion, the movable valve portion being disposed on the main portion and the fixed valve portion being disposed on the auxiliary portion, wherein the auxiliary portion is selectively detachable from the main portion. The ink cartridge may further comprise a supply hole attachment located at the bottom of the ink accommodating portion, the supply hole being defined in a selectively detachable supply hole attachment.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: March 29, 2005
    Assignee: Seiko Epson Corporation
    Inventors: Takao Kobayashi, Hisashi Miyazawa
  • Ink cartridge for ink jet recording apparatus, connection unit and ink jet recording apparatus
    Publication number: 20050057626
    Abstract: An ink cartridge (1) for supplying the ink in an ink reserving chamber (3) via an ink supply port (4) into a recording head (21) has a differential pressure valve mechanism (5) disposed between an ink flow port (7) and the ink supply port (4) in the ink reserving chamber (3), whereby the ink is supplied an adequate amount to the recording head (21) by opening or closing the differential pressure valve mechanism (5) in accordance with an ink pressure of the recording head (21). As a result, it is possible to supply the ink at a substantially constant pressure to the recording head without regard to the variation in the amount of ink or the movement of the carriage.
    Type: Application
    Filed: September 27, 2004
    Publication date: March 17, 2005
    Inventors: Minoru Usui, Hisashi Miyazawa
  • Ink cartridge and ink-jet recording apparatus
    Patent number: 6863376
    Abstract: An ink cartridge has pivotable levers connected to walls of a container, and both pawls and protruded guide portions formed on the levers. The pawls are engageable with an ink cartridge holder. The protruded guide portions contact the ink cartridge holder to move the levers in the opening direction. Further, protruded stopper portions are formed to permit pivoting movement of the levers to such a degree as to disengage the pawls from the ink cartridge holder.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: March 8, 2005
    Assignee: Seiko Epson Corporation
    Inventors: Takeo Seino, Satoshi Shinada, Hisashi Miyazawa, Yasuto Sakai, Masaki Shimomura, Satoshi Nakata
  • Ink cartridge for ink jet printer and method of charging ink into said cartridge
    Patent number: 6854835
    Abstract: An ink cartridge including: an ink chamber for retaining liquid ink; a foam chamber maintained in fluid communication with the ink chamber through a communication hole. An ink supply port for supplying ink from a porous body accommodated in the foam chamber to a recording head is provided. The portion of the foam body confronting the ink supply port is compressed by the ink supply port. The ratio between the amount of ink initially charged in the ink chamber and that of ink absorbed in the porous body is in the range from 1:1 to 1:3. When a cartridge uses more than one color of ink for printing in color, a plurality of foam and ink cartridges are used. The cartridge is filled under reduced pressure while the interior of the cartridge is further evacuated before filling with ink.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: February 15, 2005
    Assignee: Seiko Epson Corporation
    Inventors: Takao Kobayashi, Satoshi Shinada, Kiyofumi Usui, Shoichi Hiraide, Kazuo Koshino, Hisashi Miyazawa, Seiji Mochizuki, Yoshinori Miyazawa, Takashi Suzuki, Eiko Yanagida
  • Inc cartridge
    Publication number: 20050030357
    Abstract: In an ink cartridge (1), an opening of an ink flow groove 35 and an opening of an atmosphere communication recess 36 are formed in the front surface of a container main body (2), and sealed by a film (57), thereby constituting flow paths.
    Type: Application
    Filed: September 1, 2004
    Publication date: February 10, 2005
    Inventors: Yasuto Sakai, Hisashi Miyazawa, Satoshi Shinada
  • Ink jet recording apparatus and cleaning control method for recording head incorporated therein
    Patent number: 6846062
    Abstract: A valve unit 36 is placed in an ink flow passage 35 between an ink cartridge 8 and a recording head 7 and can be controlled in association with the cleaning operation of the recording head 7. Under the control of a drive controller, the valve unit 36 holds for a predetermined time a state in which negative pressure produced by a suction pump is accumulated, and is opened after the expiration of the predetermined time or is opened with the negative pressure accumulated and driving the suction pump is continued. The air bubbles remaining in a stuck state in the ink flow passage can be peeled from the ink flow passage together with an instantaneous fast ink flow produced as the valve unit 36 is opened, and the peeled air bubbles can be discharged effectively from the ink flow passage following the subsequent ink flow.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: January 25, 2005
    Assignee: Seiko Epson Corporation
    Inventors: Shuhei Harada, Hisashi Miyazawa, Hitoshi Hayakawa, Atsushi Kobayashi, Hitotoshi Kimura, Yoshiharu Aruga
  • Ink cartridge and method of regulating fluid flow
    Publication number: 20050001887
    Abstract: An ink cartridge has an ink storage chamber, an ink supply port and a negative pressure generating mechanism which selectively blocks and opens fluid communication between the ink storage chamber and the ink supply port as a consequence of ink consumption. The negative pressure generating mechanism includes an elastic member having first and second surfaces and a sealing portion, the sealing portion having a through-hole, an ink flow path communicating with the ink supply port and having an opening portion at a position where the sealing portion of the elastic member contacts with and separates from the opening portion, the opening portion facing the through-hole, and a communicating portion facing the first surface of the elastic member and communicating with the ink storage chamber. A space portion faces the second surface of the elastic member and communicates with the ink supply port.
    Type: Application
    Filed: November 11, 2003
    Publication date: January 6, 2005
    Inventors: Satoshi Shinada, Hisashi Miyazawa, Akira Ichihashi
  • Liquid container
    Publication number: 20040252146
    Abstract: The invention provides a liquid container for storing liquid to be supplied to a liquid consuming apparatus. The liquid container is constructed such that pressurized fluid is sent to its inside so that the liquid in the inside is delivered to the outside. The liquid container includes a container body which stores the liquid in its inside. The container body includes a pressurized fluid introduction port for introducing the pressurized fluid to the inside and a liquid delivery port for delivering the liquid to the outside. A detection unit is provided in the container body and outputs an output signal which is changed in accordance with a change in pressure of the liquid in the inside of the container body.
    Type: Application
    Filed: March 26, 2004
    Publication date: December 16, 2004
    Inventors: Takahiro Naka, Takahiro Katakura, Atsushi Kobayashi, Satoshi Shinada, Toshio Kumagai, Taku Ishizawa, Takeo Seino, Hisashi Miyazawa, Takakazu Fukano, Hitotoshi Kimura, Yasunao Uehara, Masahide Matsuyama
  • Ink cartridge for ink jet recording device
    Publication number: 20040239736
    Abstract: An ink cartridge for an ink jet recording device, includes: a container having an ink supply port; at least two ink chambers partitioned in the container, one being located substantially in an upper section and the other being located substantially in a lower section; an ink suction passage connecting a bottom region of the lower section ink chamber to a bottom region of the upper section ink chamber; and a negative pressure generating mechanism provided to a flow passage connecting the upper section ink chamber to the ink supply port.
    Type: Application
    Filed: April 16, 2004
    Publication date: December 2, 2004
    Inventors: Hisashi Miyazawa, Yasuto Sakai, Satoshi Shinada, Atsushi Kobayashi
  • Ink-jet printing apparatus and ink cartridge
    Publication number: 20040233260
    Abstract: An ink cartridge for a printing apparatus providing ink to a print head through a tapered ink supply needle and removably attached to the print head. The ink cartridge comprises an ink chamber for containing ink, an ink supply port, a packing member and a valve device. The ink supply port supplies ink from the ink chamber to the print head of the printing apparatus, the ink supply port comprising an external opening. The packing member is provided in the ink supply port and forms an ink channel for allowing a flow of ink. The packing member seals the ink supply needle of the printing apparatus by fitting therewith. The valve device is contained in the ink supply port and elastically abuts against the packing member. The valve device selectively opens and closes the ink channel in conjunction with the ink supply needle.
    Type: Application
    Filed: June 30, 2004
    Publication date: November 25, 2004
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Satoshi Shinada, Takeo Seino, Hisashi Miyazawa, Koichi Toba, Takahiro Naka, Minoru Usui, Atsushi Kobayashi, Hitoshi Hayakawa
  • Ink-jet recording apparatus
    Patent number: 6814435
    Abstract: An ink cartridge which is used with an inkjet recording apparatus includes a plurality of ink storage chambers. A first of the storage chambers can store light cyan ink, a second can store deep cyan ink, a third can store light magenta ink, a fourth can store deep magenta ink, and a fifth can store yellow ink. The ink storage chambers can all be accommodated integrally in a single ink cartridge. In one embodiment of the invention, the ink storage chambers are partitioned by partitioning walls which gradually increase in thickness as they approach the portion of the ink chambers having supply ports therein.
    Type: Grant
    Filed: January 7, 1998
    Date of Patent: November 9, 2004
    Assignee: Seiko Epson Corporation
    Inventors: Kazumichi Shimada, Hisashi Miyazawa, Takao Kobayashi