Patents Assigned to Konica
  • Patent number: 4868078
    Abstract: An electrophotographic image forming method is disclosed. The method comprises the steps of developing an electrostatic image formed on an image-forming member with a particulate toner for forming a toner image and transferring said toner image onto a receiving material, in which the image-forming member has a surface-improving layer comprised principally of amorphous silicon, and the toner has a weight average particle size within the range of from 1 .mu.m to 6 .mu.m and contains a constituent having a weight average particle size of not more than 5 .mu.m which accounts for not less than 20% by weight of the whole amount of the toner. An electrophotographic copy bearing a high-resolution and high-quality image can be stably obtained by this method.
    Type: Grant
    Filed: December 30, 1987
    Date of Patent: September 19, 1989
    Assignee: Konica Corporation
    Inventors: Eiichi Sakai, Yuki Okuyama, Yoshihide Fujimaki, Toshinori Yamazaki, Satoru Ikeuchi
  • Patent number: 4868100
    Abstract: A silver halide photographic light-sensitive material is disclosed, which is improved on color reproducibility, image stability and toe gradiation. The photographic material comprises a support having thereon at least one silver halide emulsion layer containing at least one coupler represented by the following Formula I and a water-soluble iridium salt in an amount of from 10.sup.-9 mol to 10.sup.-3 mol per mol of silver halide;Formula I ##STR1## In Formula I, at least one of the groups represented by R.sub.1, R.sub.2, R.sub.3 and R.sub.4 contains at least one group represented by the following formula II;Formula II--R.sub.5 --SO.sub.2 --R.sub.6.
    Type: Grant
    Filed: August 22, 1988
    Date of Patent: September 19, 1989
    Assignee: Konica Corporation
    Inventor: Toyoki Nishijima
  • Patent number: 4868102
    Abstract: A light-sensitive silver halide direct-positive photographic material which comprises a support and, provided thereon a light-sensitive direct-positive silver halide emulsion layer containing silver halide grains having an internal latent image and a core-shell structure comprising a core and at least one shell stratum either partly or entirely covering said core, the outermost stratum of said shell having been formed in the presence of a nitrogen-containing heterocyclic compound having a mercapto group therein.
    Type: Grant
    Filed: February 2, 1988
    Date of Patent: September 19, 1989
    Assignee: Konica Corporation
    Inventors: Keiji Ogi, Atsushi Kamitakahara, Eiichi Sakamoto, Nariko Isozaki
  • Patent number: 4865961
    Abstract: A silver halide color photographic light-sensitive material comprising a silver halide emulsion layer containing a cyan coupler represented by the following general formula [I]. The color photographic material is improved in sensitivity, density of cyan image, density losing of cyan image due to processing by a fatigued bleach or bleach-fix solution.
    Type: Grant
    Filed: February 22, 1988
    Date of Patent: September 12, 1989
    Assignee: Konica Corporation
    Inventors: Norio Miura, Shuji Kida, Satoshi Nakagawa, Toshihiko Kimura
  • Patent number: 4864357
    Abstract: A color image processing apparatus wherein different color filters are provided in an image pickup device corresponding to plural groups of small pixels, each group of which is one unit of color pixels, and color image signals are obtained from the common position of the small pixel groups by suitably interpolating color image signals obtained from the small pixel groups.
    Type: Grant
    Filed: December 3, 1987
    Date of Patent: September 5, 1989
    Assignee: Konica Corporation
    Inventors: Masahiko Matsunawa, Hiroyuki Yamamoto, Yoshinori Abe
  • Patent number: 4863844
    Abstract: A silver halide light-sensitive photographic material which is excellent in the aptitude for rapid processing and highly sensitive and of which the sensitivity and gradation are stable against the change of the temperature at the time of exposure is disclosed. The silver-halide photographic material comprises a support and, provided thereon, a silver halide emulsion layer, wherein said silver halide emulsion layer contains silver chloro-halide grains containing not less than 90 mole % of silver chloride and having been chemically sensitized in the presence of a labile sulfur compound and a gold compound, and an organic compound of which solubility product (Ksp) with a silver ion is not more than 1.times.10.sup.11.0, said organic compound having been added to said silver halide emulsion layer during the period between after the formation of said silver halide grains and before the completion of the chemical sensitization thereof.
    Type: Grant
    Filed: November 17, 1987
    Date of Patent: September 5, 1989
    Assignee: Konica Corporation
    Inventors: Mitsuhiro Okumura, Keiji Ohbayashi, Shigeo Tanaka
  • Patent number: 4863035
    Abstract: A packaging box and a method of packaging wherein a paste flap is bonded to an end of side wall sections interconnected with each other through folding lines to form a square cylinder, inner flaps, bonding flaps and end sections provided at each end of the side wall sections are folded, and the bonding flaps and the end sections are bonded together. A perforated line is provided on the paste flap and the side wall section. The perforated line extends from the external side of the paste flap excluding its folding line, cuts across the folding line, extends into the side wall section, cuts across the folding line back again, and extends to the external side of the paste flap. A perforated line extends from one side of the paste flap excluding its folding line, runs along a non-bonding portion provided in the paste flap, cuts across the folding line, extends into the side wall section, cuts across the folding line back again, and extends to the other side of the paste flap.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: September 5, 1989
    Assignee: Konica Corporation
    Inventor: Wataru Hiroshima
  • Patent number: 4863846
    Abstract: A silver halide photographic light-sensitive material is disclosed which is decreased in variation of light-sensitivity caused by a change in environmental humidity and a prolonged storage of the photographic material.
    Type: Grant
    Filed: June 21, 1988
    Date of Patent: September 5, 1989
    Assignee: Konica Corporation
    Inventors: Shigeo Tanaka, Mitsuhiro Okumura, Makoto Kajiwara, Masanobu Miyoshi
  • Patent number: 4863824
    Abstract: A toner for developing electrostatic latent images which comprises a colorant and two kinds of polyester is disclosed.The fFirst polyester is a nonlinear polyester that is composed of monomers including monomers of trivalence or higher valency and which satisfies the following conditions A1 and A2, the second polyester is a nonlinear polyester that is composed of monomers including monomers of trivalence or higher valency and which satisfies the following conditions B1 and B2, and the difference between the softening points of said first and second polyesters is at least 10.degree. C.condition A1: the monomers of trivalence or higher valency represent from 0.05 mol % to less than 15 mol % of all the monomers present;condition A2: the softening point is in the range of from 120.degree. C. to 160.degree. C.;condition B1: the monomers of trivalence or higher valency represent from 0.05 mol % to less than 15 mol % of all the monomers represent;condition B2: the softening point is in the range of from 80.degree.
    Type: Grant
    Filed: March 9, 1988
    Date of Patent: September 5, 1989
    Assignees: Konica Corporation, Kao Corporation
    Inventors: Masafumi Uchida, Hiroyuki Takagiwa, Satoru Ikeuchi, Hideyo Nishikawa, Shingo Tanaka, Kuniyasu Kawabe
  • Patent number: 4863842
    Abstract: A silver halide photographic light sensitive material, which contains at least one magenta dye image forming coupler expressed by the following general formula [I], at least one piperazine or homopiperazine compound expressed by the following general formula [XIIIa], at least one compound selected from a coumarane or a chroman compounds expressed by general formula [XIIIa] and hydroxyindane compounds expressed by [XIIIb], below, is described as being stable to light and moisture, and featuring an excellent color reproducibility. ##STR1## The effect of the invention is further improved by additionally employing a metallic compound wherein an optical quenching rate of singlet oxygen is more than 3.times.10.sup.7 M.sup.-1 .multidot.sec.sup.-1.
    Type: Grant
    Filed: August 9, 1988
    Date of Patent: September 5, 1989
    Assignee: Konica Technosearch Corporation
    Inventors: Yutaka Kaneko, Kenzi Kadokura, Toyoki Nishijima, Kaoru Onodera
  • Patent number: 4861702
    Abstract: A silver halide photographic light-sensitive material and a process for processing it are disclosed. The light-sensitive material is improved in photographic sensitivity, drying property and anti-roller-mark property and is suitable for the disclosed ultra-rapid processing by an automatic processor in which the photographic material is processed for the time of 20 sec to 60 sec in total. The light-sensitive material comprises a support having on at least one side thereof one or more hydrophilic layers containing gelatin which comprise at least one light-sensitive silver halide emulsion layer. An amount of the gelatin contained in said hydrophilic layer or layers is within the range of from 1.90 to 3.50 g/m.sup.2 and a swelling amount of said hydrophilic layer or layers is within the range of from 30 to 58 g/m.sup.2 when said light-sensitive material is treated in a specific condition for 15 sec. at 35.degree. C.
    Type: Grant
    Filed: January 11, 1989
    Date of Patent: August 29, 1989
    Assignee: Konica Corporation
    Inventors: Akio Suzuki, Eiji Yoshida, Satoru Nagasaki, Masumi Arai, Nobuaki Tsuji
  • Patent number: 4860063
    Abstract: A control method of supplying toner to a developing device wherein a toner supply to the developing device is controlled so that a level of the toner density is increased in a range not more than a predetermined level at a predetermined interval of an integrated development period while the developing device continues its developing operations without any continuous interruption longer than a constant period, and the level of the toner density is decreased when the continuous interruption is longer than said constant period.
    Type: Grant
    Filed: December 14, 1987
    Date of Patent: August 22, 1989
    Assignee: Konica Corporation
    Inventor: Yukio Okamoto
  • Patent number: 4855781
    Abstract: A camera includes an LCD, a microcomputer for detecting the presence/absence of a main power supply battery so as to detect an exchange of the main power supply battery, and a battery check circuit for detecting a voltage state of the main power supply battery. When the microcomputer detects the exchange of the main power supply battery, the battery check circuit is started to cause the LCD to display the voltage state of the main power supply battery.
    Type: Grant
    Filed: February 4, 1988
    Date of Patent: August 8, 1989
    Assignee: Konica Corporation
    Inventor: Yasushi Hoshino
  • Patent number: 4847189
    Abstract: A silver halide photographic material is capable of super-rapid processing with the total time of 20 to 60 minutes and is high in sensitivity, low in fogginess and excellent in pressure resistance and graininess. The photographic material is comprises a support bearing a hydrophilic colloial layer including at least one light sensitive silver halide emulsion layer thereon, whereinsilver halide grains contained in the silver halide emulsion layer are mainly comprised of tabular grains which have an aspect ratio of the grain size to the grain thickness of not lower than 5, and the projective areas of the whole tabular grain occupy not less than 50% of the projective areas of the whole silver halide grain in the emulsion layer,the melting time of the silver halide photographic light-sensitive material is within the range of from not shorter than 45 minutes, andon the side bearing the hydrophilic colloidal layer containing the silver halide emulsion layer, an amount of gelatin is within the range of from 2.
    Type: Grant
    Filed: March 9, 1988
    Date of Patent: July 11, 1989
    Assignee: Konica Corporation
    Inventors: Akio Suzuki, Eiji Yoshida, Satoru Nagasaki, Masumi Arai, Nobuaki Tsuji
  • Patent number: 4847188
    Abstract: A thermally developable light-sensitive material having at least a light-sensitive silver halide, a reducing agent, a binder and a dye-providing material on a support is disclosed. The dye-providing material is a compound that releases or forms a diffusible dye as a function of development and which has a group capable of reacting with the nucleophilic agent.
    Type: Grant
    Filed: February 1, 1988
    Date of Patent: July 11, 1989
    Assignee: Konica Corporation
    Inventors: Tawara Komamura, Hidenobu Ohya
  • Patent number: 4847149
    Abstract: A base for reflection-photographic elements is disclosed which has a biaxially stretched film support, said film comprising polyester resin and titanium dioxide, wherein said film contains at least one compound represented by the following general formula (I) or (II). ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 each represents a hydrogen atom, a halogen atom, an unsubstituted or substituted alkyl group, an alkoxy group, a dialkylamino group or an aryl group, provided that R.sup.1, R.sup.2, R.sup.3 and R.sup.4 may cooperate to form a ring. ##STR2## wherein A represents --CH.dbd.CH--, ##STR3## and R.sub.6, R.sub.7, R.sub.8 and R.sub.9 each represents a hydrogen atom, a halogen atom, an unsubstituted or substituted alkyl group, an alkoxy group, a dialkylamino group or an aryl group, provided that R.sub.6 and R.sub.7, and R.sub.8 and R.sub.9 each may cooperate to form a ring.
    Type: Grant
    Filed: November 2, 1987
    Date of Patent: July 11, 1989
    Assignee: Konica Corporation
    Inventors: Kazuto Kiyohara, Yoshiyuki Funabashi, Naoko Shimomura
  • Patent number: 4841361
    Abstract: In the color image processing apparatus according to the invention which reads an image on an original, generates a plural sets of color image components and extract color signal based on the color image components, to eliminate a density fluctuation in such color image processing, the density treatment is performed simultaneously with the color ghost treatment.
    Type: Grant
    Filed: December 3, 1987
    Date of Patent: June 20, 1989
    Assignee: Konica Corporation
    Inventors: Masahiko Matsunawa, Hiroyuki Yamamoto
  • Patent number: 4841337
    Abstract: A color image forming apparatus wherein a latent image is formed on an image retainer based on an image data obtained by processing a color-separated image of a document, and developed by a plurality of developing devices having therein toners each different in color, one of the plural developing devices being selected corresponding to a specific color of the document, and the developing step being repeated plural times, so that a multi-color toner image is formed on the image retainer.
    Type: Grant
    Filed: April 19, 1988
    Date of Patent: June 20, 1989
    Assignee: Konica Corporation
    Inventors: Seiichiro Hiratsuka, Kunihisa Yoshino, Satoshi Haneda, Hisashi Shoji
  • Patent number: 4840883
    Abstract: There is disclosed a light-sensitive silver halide color photographic material containing novel cyan coupler which comprises a light-sensitive silver halide color photographic material having at least one silver halide emulsion layer on a support, characterized in that at least one layer of the silver halide emulsion layer contains at least one cyan coupler represented by the formula (I) shown below: ##STR1## wherein R.sub.1 and R.sub.2 each represent an alkyl group, an aryl group, a heterocyclic group, a dialkylamino group, an anilino group, an alkoxy group or an arloxy group; R.sub.3 represents a hydrogen atom or an alkyl group; R.sub.4 represents a hydrogen atom, an alkyl group, an aryl group, A R.sub.5 CO--group or a R.sub.5 SO.sub.2 --group; provided that R.sub.3 and R.sub.4 cannot be hydrogen atoms at the same time; R.sub.
    Type: Grant
    Filed: June 14, 1988
    Date of Patent: June 20, 1989
    Assignee: Konica Corporation
    Inventors: Toyoaki Masukawa, Hidetaka Ninomiya, Hiroyuki Iizuka
  • Patent number: H674
    Abstract: A silver halide photographic light-sensitive material comprising a support having the first photographic structural layer comprising one or more layers on a side of the support and the second photographic structural layer comprising one or more layers on the other side of the support, in which at least one of the photographic structural layers comprises a silver halide light-sensitive emulsion layer, and the total amount of gelatin contained in the photographic structural layer comprising the silver halide emulsion layer is within the range of from 2.25 g/m.sup.2 to 3.15 g/m.sup.2. The uppermost layer of the photographic structural layer comprising the silver halide emulsion is formed by coating of a solution having a surface tension of from 15 to 26 dyn/cm, and the second photographic structural layer is coated and gelled simultaneously with coating and drying of the first photographic structural layer.
    Type: Grant
    Filed: November 3, 1987
    Date of Patent: September 5, 1989
    Assignee: Konica Corporation
    Inventors: Satoru Nagasaki, Akio Suzuki, Eiji Yoshida, Masumi Arai, Nobuaki Tsuji