Patents Assigned to Konishiroku Photo Industry Co., Ltd.
  • Patent number: 4963466
    Abstract: A silver halide photographic light-sensitive material comprising a support bearing thereon at least one silver halide emulsion layer containing a dye-forming coupler and a compound represented by Formula [I] as defined in the specification. The light-sensitive material further comprises at least one silver halide emulsion layer containing silver halide grains having a silver chloride content of not less than 90 mole percent and a compound represented by Formula [S] as defined in the specification.The presence of the compounds of Formula [I] and Formula [S] provide a material having a suitable contrast and having additional advantages such as excellent BF contamination resistance and pH variation resistance.
    Type: Grant
    Filed: January 24, 1990
    Date of Patent: October 16, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Makoto Kajiwara, Masanobu Miyoshi, Kaoru Onodera, Eiichi Sakamoto
  • Patent number: 4963473
    Abstract: A method of processing an imagewise exposed pre-sensitize lithographic printing plate which entails uniformly applying a desired amount of developer, that has not been substantially used to the surface of the printing plate by a developer supply member comprised of two plates and having a slit at the lowermost portion thereof, and then transferring the plate containing the developer to a developer storage tank, immersing the plate in the developer storage tank, and removing the developer from the plate.
    Type: Grant
    Filed: May 1, 1989
    Date of Patent: October 16, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Miegi Nakano, Minoru Seino, Masafumi Uehara, Akira Nogami
  • Patent number: 4963475
    Abstract: A method of processing an imagewise exposed light-sensitive silver halide photographic material. The material contains a silver halide emulsion layer containing silver halide grains which are sensitized with a monomethine dye. The material is processed with a developer solution containing an aromatic primary amine color developing agent in the presence of at least one hydroxylamine derivative and at least one nitrogen containing heterocyclic mercapto compound.
    Type: Grant
    Filed: March 28, 1989
    Date of Patent: October 16, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Kazuhiro Murai, Keiji Ohbayashi, Kaoru Onodera
  • Patent number: 4960664
    Abstract: A toner for developing an electrostatic latent image containing a polyester resin binder obtained by condensation polymerization of a diol component and a mixture of acid components. The acid components are an aliphatic unsaturated dicarboxylic acid or an acid anhydride thereof and a polybasic carboxylic acid having not less than three carboxylic acid groups or an acid anhydride thereof. A ratio of the polybasic carboxylic acid having not less than three carboxylic acid groups or the acid anhydride thereof to the total acid components is in the range of from 5 mol % to less than 30 mol %.
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: October 2, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Hiroyuki Yamada, Hiroyuki Takagiwa, Hiroya Masaki, Takahira Kasuya, Jiro Takahashi, Masafumi Uchida, Satoru Ikeuchi
  • Patent number: 4956270
    Abstract: A silver halide photographic material that has at least one hydrophilic colloidal layer on a support is disclosed, wherein said at least one hydrophilic colloidal layer contains an organic fluoro-compound and/or a nonionic surfactant having a polyoxuehylene unit and is hardened with a high-molecular weight hardening agent.
    Type: Grant
    Filed: February 28, 1989
    Date of Patent: September 11, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Noriki Tachibana, Eiichi Ueda, Nobuaki Kagawa, Hideo Ota
  • Patent number: 4953229
    Abstract: An image processing apparatus has an image memory storing a image data input by a image reader, a data interface means converting the picture element density of the image data transferred from the image memory through a transfer control circuit, a frame memory storing the converted image data, a display controller controlling the converted image data as to display on a display, and an operating means producing a layout command for the displayed image data, wherein the display controller processes the converted image data stored in the frame memory in accordance with the layout command and changes the displayed image data.
    Type: Grant
    Filed: October 31, 1989
    Date of Patent: August 28, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Yoshinori Abe, Masahiko Matsunawa
  • Patent number: 4948713
    Abstract: There are disclosed a processing solution of a light-sensitive silver halide color photographic material, which comprises containing a compound represented by the formula (I) shown below, and a processing method of the same, which comprises subjecting a light-sensitive silver halide color photographic material having at least one layer of silver halide emulsion layer on a support to imagewise exposure and then applying processing including at least a color developing processing, characterized in that the color developing solution to be used in the color developing processing contains a compound represented by the formula (I) shown below: ##STR1## wherein R.sub.1 represents an alkyl group having 1 to 5 carbon atoms substituted with an alkoxy group, and R.sub.2 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or an alkyl group having 1 to 5 carbon atoms substituted with an alkoxy group, and R.sub.1 and R.sub.2 may be bonded with each other to form a ring containing an oxygen atom.
    Type: Grant
    Filed: March 27, 1989
    Date of Patent: August 14, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Kazuhiro Kobayashi, Shigeharu Koboshi, Satoru Kuse, Masao Ishikawa
  • Patent number: 4943507
    Abstract: A method of developing an electrostatic latent image wherein an electrostatic latent image with a negative polarity is formed on an organic photoreceptor and developed with a toner bearing a positive electric charge. The toner used to develop the latent image includes a binder resin, a coloring agent, silica, zinc stearate, and at least one oxide selected from hydrophobic aluminum oxide and hydrophobic titanium oxide. This method of developing the electrostatic latent image produces an image having a higher maximum image density.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: July 24, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Jiro Takahashi, Kenzi Tsuzita, Hiroyuki Takagiwa, Kunio Shigeta, Hiroya Masaki
  • Patent number: 4942121
    Abstract: A silver halide photographic light-sensitive material comprising a support having at least one hydrophilic colloidal layer having spectrally sensitized silver halide grains. There are particular sensitizers which are used and the colloidal layer contains gelatin which has a saturated solubility of not more than ten in an amount of at least 35% by weight.
    Type: Grant
    Filed: December 19, 1985
    Date of Patent: July 17, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Makoto Kajiwara, Kaoru Onodera, Toshio Kimura, Kazuo Komorita
  • Patent number: 4940134
    Abstract: An apparatus for treating a waste solution generated when a photosensitive material is processed by an automatic developing machine includes a waste solution reservoir which is maintained at a constant level. A drum, partially immersed in the waste solution, is rotated to coat its surface. The drum is heated to produce a waste vapor. The waste vapor is condensed by a condenser and filtered and solid wastes are scraped from the surface of the drum. The condenser has a drain tank for collecting condensate and a non-condensable gas component. The interior of the drain tank is sealed to form an air tight seal and has a vent for exhausting the non-condensable gas component from the interior portion to the outside. The air vent includes an absorption tower to treat the non-condensable gas component.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: July 10, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Syozo Aoki, Satoru Kuse, Shigeharu Koboshi
  • Patent number: 4940644
    Abstract: This invention relates to a toner for development of electrostatic images to be used for development of electrostatic images formed in electrophotography, electrostatic printing, electrostatic recording, etc., and an image forming method by use thereof.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: July 10, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Akitoshi Matsubara, Satoru Ikeuchi, Kunio Akimoto, Yoshio Takizawa
  • Patent number: 4939073
    Abstract: A method of stabilizing a light-sensitive silver halide color photographic material. A developed silver halide color photographic material is contacted, subsequent to a processing step in a bleach-fixing bath or a fixing bath and substantially accompanied by no washing step, at the last stage of color processing with a dye stabilizing solution adjusted to a pH value between 3.0 and 9.0 and containing a soluble complex salt of an iron ion obtained by reacting an iron ion with a compound selected from the group consisting of ##STR1## The soluble complex salt of an iron ion is present in the dye stabilizing solution at a concentration of at least 1.times.10.sup.-4 mol/l.
    Type: Grant
    Filed: October 6, 1989
    Date of Patent: July 3, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Shigeharu Koboshi, Masayuki Kurematsu
  • Patent number: 4939537
    Abstract: A color copying machine for copying an image on a photosensitive material having a movable scanning exposure element with a light source for irradiating a document to be copied and projecting light reflected from the document through a window. At most, two of three primary color filters correct the spectral intensity of the light by being inserted into the light path in both directions perpendicular to the direction in which the photosensitive material is conveyed. The ratio of the total area of a sectional plane of the light path to the area of the sectional plane covered by the color correction filter is adjusted to obtain the required spectral intensity. At least one diaphragm in the light path regulates the sectional plane of the light path whereby the controlled diaphragm does not cause a change in the adjusted ratio, and the amount of light is regulated without changing the corrected spectral intensity thereof.
    Type: Grant
    Filed: October 3, 1989
    Date of Patent: July 3, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Keiji Masuda, Fumiaki Hiraike
  • Patent number: 4937047
    Abstract: An analytical element for analyzing a specific component in a liquid sample, comprising a light-transmissive and liquid-impermeable support having thereon successively a first reagent layer and a second reagent layer, and a porous spreading layer provided above said second reagent layer, and containing an electron transport agent, a dye-forming precursor material, an oxidized type coenzyme, a buffering agent and at least one reagent capable of converting said oxidized type coenzyme to a reduced type coenzyme through a specific component in a liquid sample, wherein said oxidized type coenzyme is contained in said porous spreading layer, and a lactate dehydrogenase inhibitor is contained in at least one of said second reagent layer and said porous spreading layer.According to this invention, error originating from LDH and lactic acid present in a biological liquid sample can be eliminated and the accuracy of analysis can be improved.
    Type: Grant
    Filed: March 27, 1987
    Date of Patent: June 26, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Morio Kobayashi, Seiji Hidaka, Takashi Ishihara, Isao Haga, Hiroshi Iwadate
  • Patent number: 4935338
    Abstract: A silver halide photographic material is disclosed, which has at least one silver halide emulsion layer on a support, said silver halide emulsion layer containing a latex which has been stabilized by a protective colloid which is at least one substance selected from among natural water-soluble polymers, derivatives thereof, and synthetic hydrophilic polymers having at least one nonionic group and at least one anionic group in the molecular structure.
    Type: Grant
    Filed: July 15, 1988
    Date of Patent: June 19, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Kosaku Masuda, Eiichi Ueda, Noriki Tachibana
  • Patent number: 4931375
    Abstract: Disclosed is a toner powder for developing latent electrostatic images comprising as a binder for pigment material a block or graft copolymer composed of a crystalline polyester and an amorphous vinyl polymer. The amorphous vinyl polymer has at least two peaks in its molecular weight distribution curve. One is between 100,000 and 1,000,000 and another is between 2000 and 20,000.
    Type: Grant
    Filed: May 19, 1989
    Date of Patent: June 5, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Kunio Akimoto, Satoru Ikeuchi, Yoshio Takizawa
  • Patent number: 4929539
    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: May 6, 1988
    Date of Patent: May 29, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Ryosuke Sato, Katsunori Kato, Takashi Sasaki, Hiroshi Sugita
  • Patent number: 4928134
    Abstract: A platen for a thermal transfer printer includes a support and a platen body mounted on the support and made of an elastic material. The platen body has a first layer located on a thermal printer head side and having a high hardness and a second layer having a hardness lower than that of the first layer. The hardness of the first layer is a JIS A hardness of 60 to 100. The front layer is treated such that a surface roughness of the first layer is not more than 30 .mu.m and a friction coefficient of a surface thereof is small.
    Type: Grant
    Filed: March 8, 1989
    Date of Patent: May 22, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Tai Hasegawa, Jun Monnai, Masatoshi Matsuzaki
  • Patent number: 4925735
    Abstract: Disclosed is a resin composition for heat-sensitive transfer recording medium, comprising (A) a silicone resin and (B) at least one resin selected from the group consisting of polyester resins, polyamide resins, cellulose type resins and acrylic resins.Disclosed is also a heat-sensitive transfer recording medium having at least one colorant layer containing a heat-fusible substance on a support, comprising a backing layer formed from (A) a silicone resin and (B) at least one resin selected from the group consisting of polyester resins, polyamide resins, cellulose type resins and acrylic resins provided on the surface of the support where no colorant layer is provided.The resin composition for heat-sensitive transfer recording medium of the present invention has sufficient heat resistance.
    Type: Grant
    Filed: November 2, 1988
    Date of Patent: May 15, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Kunihiro Koshizuka, Masao Asano, Toshiaki Tezuka, Tatsuichi Maehashi, Yasuhiko Tanaka
  • Patent number: 4924256
    Abstract: A slit exposure type color image forming apparatus having a first conveying device for transferring a photosensitive material to an exposure position, a second conveying device for transferring the photosensitive material from the exposure position to another position, an exposure unit adapted to expose an image on a silver halide photosensitive material while transporting the photosensitive material by the second conveying device, and a processor adapted to form a visible image on the photosensitive material. The image on the photosensitive material exposed on the basis of a signal from a detecting member, which is adapted to detect the passage of the photosensitive material. The first conveying device is released from the photosensitive material clamping force while the material is being exposed.
    Type: Grant
    Filed: May 4, 1988
    Date of Patent: May 8, 1990
    Assignee: Konishiroku Photo Industry Co. Ltd.
    Inventor: Hiromi Yanatori