Patents Assigned to Kinyosha Co., Ltd.
-
Patent number: 6321061Abstract: Disclosed is a belt type fixing apparatus for thermally fixing an unfixed toner layer on a paper sheet. The fixing apparatus has a heating roll and a resilient endless belt stretched by a plurality of rolls such that the endless belt is partly pressed against a part on the circumferential outer surface of the heating roll to form a nipping portion. The heating roll having a hard, non-resilient surface has a mandrel, a halogen lamp arranged inside the mandrel and a release coating layer formed on the outer circumferential surface of the mandrel.Type: GrantFiled: February 12, 1999Date of Patent: November 20, 2001Assignee: Kinyosha Co., Ltd.Inventors: Saburo Sonobe, Akio Onuki
-
Patent number: 6303215Abstract: Disclosed is a transfer belt for an electro-photographic apparatus, comprising a seamless reinforcing layer made of a continuous string, and a semi-conductive rubber layer formed on the reinforcing layer.Type: GrantFiled: November 12, 1998Date of Patent: October 16, 2001Assignee: Kinyosha Co., Ltd.Inventors: Saburo Sonobe, Akio Onuki
-
Patent number: 6289809Abstract: Disclosed is a blanket for an offset printing, comprising a metallic sleeve, a base layer formed on the metallic sleeve, a compressible rubber layer formed on the base layer, an inextensible layer formed on the compressible rubber layer, and a surface rubber layer formed on the inextensible layer, wherein the inextensible layer consists of a thread that is compressed in advance to 90% to 50% of the original thickness and wound about the compressible layer.Type: GrantFiled: October 12, 1999Date of Patent: September 18, 2001Assignee: Kinyosha Co., Ltd.Inventor: Saburo Sonobe
-
Patent number: 6244176Abstract: Disclosed is a printing apparatus comprising a driving roll, a supporting roll, an endless offset blanket stretched between the driving roll and the supporting roll, a plurality of plate cylinders for transferring inks having a plurality of different colors onto the endless offset blanket, a plurality of first impression drums arranged to have the endless offset blanket held between the first impression drums and the plate cylinders, ink supply means for supplying the inks of the plural colors to the plate cylinders, and a second impression drum positioned to push the supporting roll and to have a printing medium held between the supporting roll and the second impression drum, the inks of the plural colors transferred onto the endless offset blanket being printed on the printing medium in a single operation.Type: GrantFiled: August 24, 1999Date of Patent: June 12, 2001Assignee: Kinyosha Co., Ltd.Inventors: Saburo Sonobe, Akio Onuki
-
Patent number: 5819646Abstract: A fixing device comprises a thermal fixing roll and a pressing roll forming a nip portion together with the thermal fixing roll. The pressing roll included in the fixing device comprises a core, a sponge rubber layer covering the outer circumferential surface of the core and provided with a large number of through-holes extending in parallel with the axis of the core and arranged equidistantly from the outer circumferential surface of the core, a rubbery elastic layer formed in a thickness of 350 to 4500 .mu.m to cover the outer circumferential surface of the sponge layer, and a fluorocarbon resin layer formed to cover the outer circumferential surface of the rubbery elastic layer.Type: GrantFiled: April 30, 1996Date of Patent: October 13, 1998Assignee: Kinyosha Co., Ltd.Inventor: Noritomo Fukunaga
-
Patent number: 5803887Abstract: A heat-fixing roll which includes a core shaft, and a rubber layer formed on an outer peripheral surface of the core shaft, wherein the rubber layer is formed of a silicone rubber compound of addition reaction curing type having a thermal conductivity of 1.5.times.10.sup.-3 cal/cm.multidot.sec.multidot..degree.C. or more and containing 1.5 parts by weight or more of silicone resin powder having an average particle diameter of 1 to 20 .mu.m.Type: GrantFiled: June 30, 1997Date of Patent: September 8, 1998Assignee: Kinyosha Co., Ltd.Inventor: Noritomo Fukunaga
-
Patent number: 5639549Abstract: Disclosed is a fixing roll, comprising a core metal, a heat resistant elastic layer formed to cover the circumferential outer surface of the core metal, and a surface layer formed to cover the circumferential outer surface of the heat resistant elastic layer, the surface layer being formed of a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer resin film of a double layer structure consisting of an inner layer having a volume resistivity of 10.sup.11 .OMEGA..cm or less and an outer layer having a thickness falling within a range of between 3 .mu.m and 50 .mu.m, and the entire thickness of the resin film falling within a range of between 20 .mu.m and 500 .mu.m.Type: GrantFiled: May 8, 1992Date of Patent: June 17, 1997Assignee: Kinyosha Co., Ltd.Inventors: Noritomo Fukunaga, Michiyoshi Kurosawa
-
Patent number: 5445588Abstract: A printer rolling includes a surface layer roughened by forming a plurality of lattice-shaped grooves such that a large number of diamond-shaped configurations are defined by the grooves, each diamond-shaped configuration including two diagonally facing corners each having an angle of 20.degree. to 160.degree., or by forming a number of parallel grooves each forming an angle of 10.degree. to 80.degree. with the axis of the metal core, so as to form a continuous groove.Type: GrantFiled: December 27, 1993Date of Patent: August 29, 1995Assignee: Kinyosha Co., Ltd.Inventors: Nobuyuki Ishibashi, Tsurumatsu Takano, Yoshio Mori
-
Patent number: 5195228Abstract: The present invention provides a roll for a fixing unit including a sponge layer which has a multiple of through holes parallel to a longitudinal direction of a metal core and aligned in a circumferential direction of the metal core at a predetermined gap, or a through hole helically formed along the longitudinal direction of the metal core, and which is formed on a circumferential surface of the metal core, and a surface coating layer applied on a circumferential surface of the sponge layer.Type: GrantFiled: November 12, 1991Date of Patent: March 23, 1993Assignee: Kinyosha Co., Ltd.Inventors: Noritomo Fukunaga, Mitiyoshi Kurosawa
-
Patent number: 5116669Abstract: The compressible rubber blanket for offset printing of the present invention is characterized by making the thickness of the solid rubber layer 0.25 mm or greater and setting the ratio of the thicknesses of the surface rubber layer, compressible layer and solid rubber layer to predetermined one, whereby it is enabled to be excellent in printability, to make reduction in the thickness during printing less, to be excellent in the action of absorbing a shock such as a mechanical impact, and to prevent the material to be printed from winding around the blanket cylinder. And, the blanket applies to printing machines such as sheet-fed offset presses, offset rotary presses and perfecting presses, and it is suitable for printing of coated papers, carton boards and the like.Type: GrantFiled: May 13, 1991Date of Patent: May 26, 1992Assignee: Kinyosha Co., Ltd.Inventor: Saburo Sonobe
-
Patent number: 5113760Abstract: According to a printing machine ink roller and a method of the invention for manufacturing the same, a surface layer (18) consisting of a synthetic resin or a rubber-like material, which has ink absorbency and which allows surface polishing, is arranged on a surface of a mandrel, a large number of substantially spherical particles are mixed in the surface layer (18), and a large number of independent projections (16) are formed by partially exposing predetermined substantial particles in a surface region (17) of the surface layer (18). The ink roller can maintain a function of transferring a predetermined amount of ink for a long period of time so that the performance of a printing machine can thus be improved, and such a printing machine can be very easily manufactured and repaired.Type: GrantFiled: January 31, 1989Date of Patent: May 19, 1992Assignee: Kinyosha Co., Ltd.Inventors: Saburo Sonobe, Nobuyuki Ishibashi
-
Patent number: 5099759Abstract: According to the invention, a surface layer consisting of a synthetic resin or rubber substance which has an ink suction property and can be subjected to surface grinding is formed on the surface of a core metal, a large number of substantially spherical grains and a recess forming substance are mixed in the surface layer, a predetermined amount of substantially spherical grains are partially exposed on a surface region of the surface layer to form a large number of mutually independent projections, and a large number of recesses are exposed on the surface layer by the recess forming substance. There are provided a printing machine ink roller which can maintain transfer function of a predetermined amount of ink for a long time period, can improve printing performance of a printing machine, and can be easily manufactured and repaired and a method of manufacturing the same.Type: GrantFiled: August 14, 1989Date of Patent: March 31, 1992Assignee: Kinyosha Co., Ltd.Inventors: Saburo Sonobe, Nobuyuki Ishibashi
-
Patent number: 5033380Abstract: Ink metering rollers include a core roller and a synthetic resin matrix layer formed on the periphery of the core roller. The matrix layer has a number of hemi-spherical depressions formed in its surface and also a number of hollow microballoons embedded therein. As the matrix layer of the ink metering roller is gradually worn, the hollow microballoons open in the surface of the matrix layer thereby forming spherical depressions. Hence, the spherical depressions are always distributed uniformly in the surface of the matrix layer, and hold a prescribed amount of ink. The ink metering roller therefore uniformly transfers and distributes a desired amount of ink onto the entire periphery of inking rollers associated with keyless printing machines.Type: GrantFiled: March 9, 1989Date of Patent: July 23, 1991Assignee: Kinyosha Co., Ltd.Inventors: Saburo Sonobe, Nobuyuki Ishibashi
-
Patent number: 4962578Abstract: A calender roll according to this invention requires no pre-operation, and has excellent heat and pressure resistance. In addition, the roll generates only a small amount of heat upon rotation, and can prevent scattering of a resin upon breakage. The roll of this invention is suitable to a resin calender roll such as a papermaker's calender roll.Type: GrantFiled: February 2, 1989Date of Patent: October 16, 1990Assignee: Kinyosha Co., Ltd.Inventors: Yuji Saito, Kazuo Yamada, Akiyoshi Inoue, Yasuhiro Takaoka
-
Patent number: 4438063Abstract: A press roll comprises an inorganic powder and a polyurethane obtainable by reacting an organic isocyanate and an organic compound having a functional group which reacts therewith. This roll is preferably used as a top press roll for manufacturing paper.Type: GrantFiled: December 17, 1980Date of Patent: March 20, 1984Assignee: Kinyosha Co., Ltd.Inventors: Masayoshi Suguri, Kazuo Yamada, Masaaki Nandate