Patents by Inventor Yohji Matsufuji

Yohji Matsufuji 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).

  • Patent number: 5091737
    Abstract: A recording device comprises a plural number of ink jet device units, each unit comprising an ink jet head portion, its drive controlling portion and a wiring portion, juxtaposed on a common base plate.
    Type: Grant
    Filed: June 13, 1989
    Date of Patent: February 25, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shigeo Toganoh, Yohji Matsufuji, Hiroo Ichihashi
  • Patent number: 4694307
    Abstract: A recording device comprises a plurality of ink-jet recording units arranged separately from each other and an ink reservoir to supply an ink commonly to the recording units.
    Type: Grant
    Filed: June 9, 1986
    Date of Patent: September 15, 1987
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shigeo Toganoh, Yohji Matsufuji, Hiroo Ichihashi
  • Patent number: 4658272
    Abstract: An ink-supplying device for feeding ink to a plurality of ink-jetting heads comprises an ink reservoir common to all the heads and ink-feeding means disposed parallel in the reservoir.
    Type: Grant
    Filed: December 12, 1984
    Date of Patent: April 14, 1987
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shigeo Toganoh, Yohji Matsufuji, Hiroo Ichihashi
  • Patent number: 4623905
    Abstract: A liquid supply apparatus is characterized by the provision of pumping means for supplied liquid interposed between a liquid supply portion and a portion to be supplied with liquid, a first valve mechanism having a small resistance in a forward direction, and a second valve mechanism having a high checking characteristic.
    Type: Grant
    Filed: December 9, 1983
    Date of Patent: November 18, 1986
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroo Ichihashi, Shigeo Toganoh, Yohji Matsufuji
  • Patent number: 4597794
    Abstract: In an ink-jet recording process which comprises forming droplets of an ink and recording on an image receiving material by using the droplets, said ink is prepared by dispersing fine particles of pigment into aqueous dispersion medium containing polymer having both a hydrophilic and a hydrophobic construction portion. An average particle size (D micron) of the pigment and an average molecular weight of the polymer satisfy the relationship represented by the following equation.D.times.5.times.10.sup.2 .ltoreq.WAnd the ratio of molecular weight of the pigment to average molecular weight of the polymer is a value in the range from 1:2 to 1:150.
    Type: Grant
    Filed: July 3, 1984
    Date of Patent: July 1, 1986
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tokuya Ohta, Yasuhiro Yano, Yohji Matsufuji, Masahiro Haruta, Tsuyoshi Eida
  • Patent number: 4593295
    Abstract: An image recording device comprises a plural number of recording heads for jetting inks with respective different colors. The device performs recording of color images on a paper while reciprocally moving the recording heads in the direction in which they are arranged. First and second groups of recording heads are provided for respective colors, and the first group of recording heads are arranged in position with a predetermined pitch shifted in the direction of the arrangement of the ink jetting orifices of the respective heads from the second group of recording heads.
    Type: Grant
    Filed: May 20, 1983
    Date of Patent: June 3, 1986
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yohji Matsufuji, Hiroo Ichihashi
  • Patent number: 4590494
    Abstract: A multicolor recording apparatus having a plurality of independently drivable recording devices of the same color is provided with a distributor for distributing and supplying a recording liquid of the same color to the plurality of recording devices of the same color.
    Type: Grant
    Filed: December 7, 1983
    Date of Patent: May 20, 1986
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroo Ichihashi, Shigeo Toganoh, Yohji Matsufuji
  • Patent number: 4559543
    Abstract: A recording device comprises a plural number of ink jet device units, each unit comprising an ink jet head portion, its drive controlling portion and a wiring portion, juxtaposed on a common base plate.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: December 17, 1985
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shigeo Toganoh, Yohji Matsufuji, Hiroo Ichihashi
  • Patent number: 4521785
    Abstract: An image forming device is provided which comprises a means for supplying a recording medium for transfer, a means for recording on said recording medium, a means for supplying a transfer-receiving member, a means for pressure contacting to said recording medium with said transfer-receiving member. The recording medium for transfer has an ink receptive layer laminated on its substrate so that said receptive layer can be peeled off from said substrate.
    Type: Grant
    Filed: June 13, 1983
    Date of Patent: June 4, 1985
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yohji Matsufuji
  • Patent number: 4499478
    Abstract: An ink jet recording apparatus comprises an ink jet head section constructed with a plurality of pre-divided, discrete ink jet heads, a drive control section and a wiring section, and a common supporting member, on which these ink jet head section, drive control section, and wiring section are disposed and electrically connected each other.
    Type: Grant
    Filed: December 28, 1981
    Date of Patent: February 12, 1985
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yohji Matsufuji, Shigeo Togano, Hiroo Ichihashi
  • Patent number: 4477823
    Abstract: Ink jet recording apparatus having a full line multi-array orifice type ink jet head to perform the recording operation at its predetermined position, an ink storing tank to store ink for feeding to the ink jet head, and a common supporting member, on which the ink jet head and the ink storing tank are communicatively connected to each other in a manner not to cause relative positional displacement between them.
    Type: Grant
    Filed: December 11, 1981
    Date of Patent: October 16, 1984
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yohji Matsufuji, Shigeo Togano, Hiroo Ichihashi
  • Patent number: 4410899
    Abstract: A liquid droplet is formed by producing and eliminating a bubble in a liquid in such a way that the liquid flow in the liquid conduit is not intercepted even when the bubble reaches the maximum volume.
    Type: Grant
    Filed: March 27, 1981
    Date of Patent: October 18, 1983
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahiro Haruta, Yashuhiro Yano, Yohji Matsufuji, Tsuyoshi Eida, Tokuya Ohta
  • Patent number: 4395288
    Abstract: A liquid recording medium for use in a recording process, wherein said recording medium is discharged from a discharge orifice in a recording head and spattered in the form of droplets for recording, and containing (a) a recording agent for forming recorded images and (b) a carrier liquid capable of dissolving or dispersing the recording agent. The recording agent is a compound having 2-8 sulfo groups per molecule and having the formula (A) ##STR1## where the Q.sub.1 radicals are similar or dissimilar members selected from phenylene and naphthylene, the Q.sub.2 radicals are similar or dissimilar members selected from phenyl and naphthyl, the Q.sub.1 radicals and the Q.sub.2 radicals may be unsubstituted or amino substituted, hydroxyl substituted or sulfo substituted, R.sub.1 -R.sub.6 are similar or dissimilar members selected from hydrogen, amino, hydroxyl and sulfo, and said sulfo groups as mentioned above are all in the form of sodium salt or quaternary ammonium salt.
    Type: Grant
    Filed: April 5, 1982
    Date of Patent: July 26, 1983
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsuyoshi Eida, Yasuhiro Yano, Masahiro Haruta, Yohji Matsufuji, Tokuya Ohta
  • Patent number: 4373954
    Abstract: A recording liquid composed of an aqueous composition containing a water-soluble dye as the recording agent comprises a total concentration of halogen ions and acid radicals containing in said composition within the range from 0.00001 to 0.5% by weight.
    Type: Grant
    Filed: April 22, 1981
    Date of Patent: February 15, 1983
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsuyoshi Eida, Yasuhiro Yano, Yohji Matsufuji, Masahiro Haruta, Tokuya Ohta
  • Patent number: 4368476
    Abstract: An ink jet recording head of the type in which ink droplets are jetted from the orifice of the head toward a recording material to effect recording on the surface of the recording material with said ink droplets, said recording head characterized in that at least the area surrounding the jet orifice is treated with a compound of general formula: R.Si.X.sub.3 wherein, R is a fluorine containing group selected from fluoroalkyl, fluoroaryl, fluorocycloalkyl, fluoroalkaryl and fluoroalkylaryl, each having 1 to 20 carbon atoms, and the ratio in number of fluorines: other elements in said fluorine containing group being not less than 1:1, and X is halogen, a hydrolyzable group selected from alkoxy, alkyl and acyloxy each having 1 to 5 carbon atoms, or hyroxyl.
    Type: Grant
    Filed: December 3, 1980
    Date of Patent: January 11, 1983
    Assignee: Canon Kabushiki Kaisha
    Inventors: Haruo Uehara, Shigeyuki Matsumoto, Yasushi Takatori, Tokuya Ohta, Yohji Matsufuji
  • Patent number: 4361842
    Abstract: A recording method and a liquid composition for recording on a recording medium with a recording agent discharged from the discharge orifice of a recording head in the form of flying droplets by the repeated heating of a heating zone in the recording head, includes the steps of filling the heating zone with a liquid containing a liquid medium, a coating-film forming compound which undergoes thermal oxidation when subjected to heat energy for forming a coating film, and a recording agent, and causing heat energy to repeatedly act on the liquid to cause the repeated formation of coating film on the wall surface of the heating zone.
    Type: Grant
    Filed: September 8, 1980
    Date of Patent: November 30, 1982
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahiro Haruta, Yohji Matsufuji, Yasuhiro Yano, Tokuya Ohta, Tsuyoshi Eida
  • Patent number: 4338611
    Abstract: An improvement in a structure of a liquid jet recording head having a liquid ejecting portion constructed with an orifice side end part, at the tip end of which an orifice is provided to discharge liquid therefrom, an energy acting zone communicatively connected with the orifice and where energy acts on the liquid to form flying droplets, and a liquid inlet port side end part connected with the energy acting zone and having a liquid inlet port, through which the liquid is introduced into the energy acting zone.
    Type: Grant
    Filed: September 12, 1980
    Date of Patent: July 6, 1982
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsuyoshi Eida, Yohji Matsufuji, Yasuhiro Yano, Tokuya Ohta, Masahiro Haruta
  • Patent number: 4325735
    Abstract: A recording liquid composition whose small droplets are used for recording is composed of an aqueous liquid medium containing a water-soluble dye, and the composition contains a nitrogen-containing heterocyclic ketone compound and a member selected from urea and thiourea, or a nitrogen-containing 5-membered heterocyclic keto-acid.
    Type: Grant
    Filed: June 13, 1980
    Date of Patent: April 20, 1982
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tokuya Ohta, Tsuyoshi Eida, Yasuhiro Yano, Yohji Matsufuji, Masahiro Haruta
  • Patent number: 4222887
    Abstract: A liquid crystal composition comprising a mixture of at least one kind of liquid crystal substance represented by the following general formula (1) and at least one kind of compound selected from the groups consisting of the compounds represented by the following general formulas (2) to (8): ##STR1## wherein R.sub.1 and R.sub.2 are CN group or selected from C.sub.n H.sub.2n+1, C.sub.n H.sub.2n+1 O and C.sub.n H.sub.2n+1 COO groups where n is an integer of from 1 to 10, and both R.sub.1 and R.sub.2 are not CN group simultaneously; ##STR2## wherein R.sub.3 and R.sub.4 are CN group, or selected from C.sub.n H.sub.2n+1, C.sub.n H.sub.2n+1 O, C.sub.n H.sub.2n+1 COO and C.sub.n H.sub.2n+1 OCOO groups where n is an integer of from 1 to 10, and both R.sub.3 and R.sub.4 are not CN group simultaneously; R.sub.5 is selected from the above-described groups, except for CN group; and R.sub.6 is selected from --COO--, --C.sub.2 H.sub.4 --, --O--CH.sub.2 -- and --C.sub.2 H.sub.2 --.
    Type: Grant
    Filed: July 11, 1978
    Date of Patent: September 16, 1980
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yohji Matsufuji