Patents Assigned to Konishiroku Photo Industry Co., Ltd.
  • Magnetic recording medium and a process of fabricating such magnetic recording medium
    Patent number: 4562117
    Abstract: A magnetic recording medium comprising a support and provided thereon a magnetic layer containing magnetic powder and a copolymer capable of being soluble in water by 10 parts by weight or more per 100 parts by weight of water.Further, a process of preparing a magnetic recording medium wherein magnetic powder is treated with a copolymer capable of dissolving 10 parts by weight or more per 100 parts by weight of water in an aqueous medium under presence of a metal ion and a magnetic paint containing this treated magnetic powder is coated on base to form a magnetic layer is also provided.
    Type: Grant
    Filed: May 25, 1984
    Date of Patent: December 31, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Shozo Kikukawa, Yoshitaka Yasufuku
  • Ion modulating electrode
    Patent number: 4562447
    Abstract: An ion modulating electrode having at least one row of a plurality of apertures, which is capable of enhancing or blocking the passage of an ion flow through said apertures. The ion modulating electrode comprises a continuous layer of a conductive material and a segmented layer of a conductive material separated from each other by an insulating layer. The ion modulating electrode comprises at least one of said continuous layer and segmented layer has a resistance layer having a resistivity of not more than 10.sup.10 .OMEGA.cm thereon.
    Type: Grant
    Filed: February 17, 1984
    Date of Patent: December 31, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Noriyoshi Tarumi, Haruo Iwahashi, Masahiko Matsunawa, Hiroshi Tokunaga
  • Film mounting device
    Patent number: 4561167
    Abstract: A film mounting device wherein a mounting frame constituted by a pair of foldable main and auxiliary plates is transferred from a stocking position to a mounting position by a cam means, a developed film is fed so as to be set in place one frame at a time in the mounting frame by a detecting means, one frame thus of the film fed out is cut, the film is fitted into the main plate of the mounting frame and the auxiliary plate of the mounting frame is folded on the main plate by means of a folding rod which is driven by a cam, and finally the auxiliary plate is pressed on the main plate intimately by using rollers.
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: December 31, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventor: Kaneo Saito
  • Apparatus for and method of processing and packaging photographic film
    Patent number: 4561235
    Abstract: Apparatus for and a method of processing and packaging a photographic film in which the whole process starting with preparation of a long film blank in a base magazine to the loading in a cartridge is conducted without taking any intermediate rolling step wherein the film is rolled before further processing. The film is sliced and the sliced film is continuously processed by a splicer, a printer, perforating device, sizing cutter, and rolling chute conveyor. The whole process is divided into a suitable number of steps and carried out in apparatus having intermediate partitions to form independent dark rooms or dark sections covered by a light shielding cover, so that exposure of the film can be avoided even if the other sections are illuminated.
    Type: Grant
    Filed: December 15, 1982
    Date of Patent: December 31, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Akira Yanagisawa, Hisashi Yazawa, Toshio Kato
  • Nitrogen-containing heterocyclic blocked mercapto development inhibitors
    Patent number: 4562138
    Abstract: This invention relates to nitrogen containing heterocyclic compounds represented by the general formula ##STR1## wherein Z is non-metallic atoms necessary to form a tetrazole, a benzotriazole or a benzothiazole, either substituted or unsubstituted, n is either 1 or 2 and R is alkyl or phenyl. The above mentioned compounds can be suitably used in a photographic material as a development inhibitor precursor.
    Type: Grant
    Filed: August 21, 1984
    Date of Patent: December 31, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Morito Uemura, Kaoru Onodera
  • Developing unit
    Patent number: 4559898
    Abstract: The present invention relates to developing unit for an electrostatic reproducing apparatus, and more particularly to the developing unit comprising a developer mixing device thereof by which the developer is mixed up inside the developing unit in order to develop an electrostatic latent image.
    Type: Grant
    Filed: October 20, 1982
    Date of Patent: December 24, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Masakazu Fukuchi, Keiji Oishi, Yasuyuki Iwai
  • Purging system for ink jet recording apparatus
    Patent number: 4558326
    Abstract: In an ink jet recording apparatus of the ink-on demand type, the recording ink is forcibly sent from a pressure chamber in the recording head to nozzles which jet the recording ink onto a recording medium. An ink cartridge is a closed-up rigid body having an opening therein which permits gas to flow in and out of the rigid body. The rigid cartridge body contains a flexible ink container bag which contains recording ink. A pressurized gas supply is connected to the ink cartridge body in communication with the opening thereof for increasing the pressure inside the ink cartridge body and for thereby increasing the pressure of the ink in the flexible container bag due to flexing of the bag under increased pressure.
    Type: Grant
    Filed: September 6, 1983
    Date of Patent: December 10, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Yoshiaki Kimura, Yasuhiko Tanaka
  • Developing method
    Patent number: 4557992
    Abstract: A developing method wherein a developer layer formed on a developer feeding carrier is conveyed, into an oscillating electric field, and an electrostatic latent image on an image retainer is developed by the developer of the developer layer inside the oscillating electric field. The developer has carrier particles and toner particles and the average particle size of the carrier particles is from 5 to 50 .mu.m. The average particle size of the toner particles is up to 20 .mu.m. The carrier particle and the toner particle are sphered.
    Type: Grant
    Filed: March 26, 1984
    Date of Patent: December 10, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Satoshi Haneda, Seiichiro Hiratsuka
  • Toner for development of electrostatic image containing binder resin and wax
    Patent number: 4557991
    Abstract: There is disclosed a toner for development of electrostatic image which comprises a binder resin selected from the group consisting of a polyester resin, a vinyl polymer, a styrene-butadiene copolymer, a styrene polymer, a styrene-containing copolymer and a polymer containing a reactive prepolymer; and a wax comprising a polyolefin.The toner of the present invention has excellent non-offset properties and a very low minimum fixing temperature, has high fluidity and has excellent developing and transfer properties.
    Type: Grant
    Filed: March 12, 1984
    Date of Patent: December 10, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Hiroyuki Takagiwa, Jiro Takahashi, Meizo Shirose, Naomi Inaba, Megumi Seki
  • Analytical element
    Patent number: 4557901
    Abstract: An analytical element for use in analysis of a component in an aqueous fluid, comprising(a) a light-transmissive support;(b) a reagent layer; and(c) a porous spreading layer,being characterized in that the reagent layer contains a substantially water-dispersible copolymer obtained by copolymerization of at least one copolymerizable monomer, which is water soluble and has a nonionizable group in the side chain, with at least one copolymerizable hydrophobic monomer.The analytical element of this invention is good with less formation of fogging, higher in color forming density and indicating higher sensitivity.
    Type: Grant
    Filed: October 29, 1982
    Date of Patent: December 10, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Mikio Koyama, Kenichiro Okaniwa, Masakuni Saruhashi, Yuko Ohmachi
  • Photographic printing apparatus
    Patent number: 4557591
    Abstract: Disclosed herein is a photographic printing apparatus including at least one of image-rotating lenses 25 and 26 which enables the production of prints of the same size from photographic films both of full size and half size by a 45-degree rotation of said image-rotating lenses 25 and 26.
    Type: Grant
    Filed: February 8, 1983
    Date of Patent: December 10, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Moriyoshi Serizawa, Haruo Hakamada
  • Picture image discriminating apparatus
    Patent number: 4556916
    Abstract: A picture image discriminating apparatus which operates for scanning a document and transmitting a picture signal obtained through converting a light signal photoelectrically at every unit reading size of 0.01 mm.sup.2 or over to a signal processing division for picture image discrimination by a peak interval of a time series output of the picture signal. The picture image discriminating apparatus has a differentiating circuit to differentiate a time series output of the picture signal obtainable according to the light signal, a binary-coding circuit to compare an output signal from the differentiating circuit with a specific level and output a binary pulse signal, and a counter to count an output pulse from the binary-coding circuit.
    Type: Grant
    Filed: December 21, 1982
    Date of Patent: December 3, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventor: Masahiko Matsunawa
  • Magnetic recording medium
    Patent number: 4555443
    Abstract: A magnetic recording medium comprising a support having a magnetic layer on a first side of said support and a back coat layer on a second side of said support, which second side is opposite said first side, said back coat layer containing at least a silicon-modified polyurethane and a carbon black having a BET value of from 200 to 500 m.sup.2 /g, said silicon-modified polyurethane being obtained by the reaction of an isocyanate and an active hydrogen compound having a siloxane linkage.
    Type: Grant
    Filed: June 25, 1984
    Date of Patent: November 26, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Shozo Kikugawa, Yoshitaka Yasufuku
  • Developing apparatus
    Patent number: 4555172
    Abstract: A developing apparatus equipped with a sleeve and a scraper member to scrape off the developer from the circumferential surface of the sleeve, wherein the scraper member is normally urged resiliently in the direction which considerably separates it from the circumferential surface of the sleeve, and when there is developer on the scraper member the tip of the scraper member comes close to the circumferential surface of the sleeve. A gap is defined in a limited width between the sleeve and a restriction member for restricting the flow rate of the developer. The gap can be non-uniformly changed along the axial direction of the sleeve.
    Type: Grant
    Filed: July 8, 1982
    Date of Patent: November 26, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventor: Michio Mogi
  • Method of producing support for photographic paper
    Patent number: 4554175
    Abstract: Disclosed is a method of producing a support for a photographic paper, which comprises applying primary irradiation of electron beams to at least one coated layer formed on one side or both sides of a substrate and curable by irradiation of electron beams, bringing the surface of said coated layer into contact with a form member and then peeling it from the form member, followed by applying secondary irradiation of electron beams to the coated layer. The primary irradiation is carried out in the manner that the surface of the coated layer may hold shapes substantially corresponding to shapes on the surface of the form member at the stage where the coated layer has been peeled off from the form member.
    Type: Grant
    Filed: March 15, 1984
    Date of Patent: November 19, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Toshiaki Shibue, Koichi Nagayasu
  • Apparatus and method for developing electrostatic latent image
    Patent number: 4553500
    Abstract: A method of and apparatus for developing an electrostatic latent image wherein an oscillating electric field is formed between a developing member and an electrostatic latent image receptor in synchronism with the rotation of the developing member. A voltage having a waveform obtained by periodically superposing a pulse-like voltage is applied on the developing member.
    Type: Grant
    Filed: July 24, 1984
    Date of Patent: November 19, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Masahiko Itaya, Satoshi Haneda, Makoto Tomono
  • Silver halide photographic material
    Patent number: 4554247
    Abstract: A silver halide photographic material having as essential photographic layers at least one photosensitive silver halide emulsion layer and at least one non-sensitive hydrophilic colloidal layer on a support is disclosed. At least one of said photographic layers contains fine oil globules at a density of 1 or more, and a hardener having at least three functional groups is incorporated in at least one photographic layer containing said fine oil globules and/or at least one photographic layer which is farther from said support than the photographic layer containing said fine oil globules.
    Type: Grant
    Filed: February 13, 1984
    Date of Patent: November 19, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Kiyotoshi Yamashita, Minoru Ishikawa, Hideo Ohta, Kenji Kumashiro
  • Silver halide photosensitive materials for color photography
    Patent number: 4554244
    Abstract: There is disclosed a silver halide photosensitive material for color photography which comprises a phenol type cyan coupler having the formula: ##STR1## wherein the substituents X.sup.1, X.sup.2, Y, Z and n are as defined in the specification and claim of this application.The cyan coupler mentioned above is a novel cyan dye image-forming coupler and the photosensitive material containing the same according to the present invention has removed the various drawbacks in the prior art.
    Type: Grant
    Filed: June 4, 1984
    Date of Patent: November 19, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Ryosuke Sato, Katsunori Kato, Takashi Sasaki, Hiroshi Sugita
  • Cleaning device
    Patent number: 4552451
    Abstract: A cleaning device for separating residual magnetic toner on an image carrier from the image carrier and for magnetically absorbing the separated magnetic toner by a rotary magnet member and transferring on a guide member on the surface of which a shifting field is induced by the rotary magnet member and which covers the surface of the magnet member from the part approaching the image carrier to the part on the opposite side where the magnetic toner drops down by its own gravity and removing it away. A vibration imparting device is provided for vibrating the guide member.
    Type: Grant
    Filed: June 13, 1983
    Date of Patent: November 12, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Yoshio Yamazaki, Takashi Itoh
  • Packaged photographic product
    Patent number: 4551367
    Abstract: A packaged photographic product, comprising a composite having a light-sensitive photographic material interposed between protective materials, which composite is further packaged within a barrier packaging material, said barrier packaging material having at least a metal layer provided internally and at least one layer of a polyolefin or a polyolefin derivative prepared by extrusion lamination, and said product also satisfying at least one of the conditions (a) and (b) shown below:condition (a): the surface potential of said barrier packaging material on the side of said protective material having an absolute value of not higher than 75 V;condition (b): the surface specific resistance of said protective material being not higher than 1.times.10.sup.11 .OMEGA. under the condition of the relative humidity of 60%.
    Type: Grant
    Filed: May 2, 1984
    Date of Patent: November 5, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Toshio Nagatani, Norio Chiba, Takao Hatanaka, Toshio Saito