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公开(公告)号：JP2001215802A
公开(公告)日：2001-08-10
申请号：JP2000012435
申请日：2000-01-21
Applicant: BRIDGESTONE CORP
Inventor： MOROOKA TAKUYA
Abstract: PROBLEM TO BE SOLVED: To provide a magnetic developing roller which can be manufactured with a simple procedure, besides, of which work accuracy is improved, and also, capable of easily attaining a desired surface shape. SOLUTION: As for the magnetic developing roller constituted by arranging a magnetic roller in a sleeve, the sleeve is a hollow cylindrical sleeve constituted of resin compound containing synthetic resin and conductive agent, and also, having a volume resistivity
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公开(公告)号：JP2521753B2
公开(公告)日：1996-08-07
申请号：JP11328987
申请日：1987-05-08
Applicant: BRIDGESTONE CORP
Inventor： SHINOGAYA TOSHIKAZU , MOROOKA TAKUYA
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公开(公告)号：JPH06233620A
公开(公告)日：1994-08-23
申请号：JP24273093
申请日：1993-09-29
Applicant: BRIDGESTONE CORP
Inventor： WATANABE YASUHIRO , SHINOGAYA TOSHIKAZU , MOROOKA TAKUYA , MATSUSHIMA YASUSUKE
IPC: A01F12/24
Abstract: PURPOSE:To provide the subject net realized in high wear resistance and prevented from clogging. CONSTITUTION:This handling chamber-receiving net is made up by arranging plural sheets of unit 21 in rows on and fixing them to an attachment frame; in this case, the sieve meshes 23 of each unit 21 are made by dividing with a synthetic resin material excellent in both wear resistance and water repellency.
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公开(公告)号：JPH024842A
公开(公告)日：1990-01-09
申请号：JP15439588
申请日：1988-06-22
Applicant: BRIDGESTONE CORP
Inventor： IWASAKI SHINICHI , SHINOGAYA TOSHIKAZU , ISHIDA YOZO , ISHIZUKA YUZO , MOROOKA TAKUYA
Abstract: PURPOSE:To obtain the subject blend, excellent in physical strength and abrasion and friction characteristics, further adhesion and decorative properties and useful as sealing materials for various packings by kneading ultrahigh-molecular weight polyethylene with a rubber compound having solubility different from that of the ultrahigh-molecular weight polyethylene at the softening point or above of the ultrahigh-molecular weight polyethylene. CONSTITUTION:The objective composition obtained by kneading, e.g., (A) 100 pts.wt. ultrahigh-molecular weight polyethylene having 800000-5000000 molecular weight with (B) 1-100 pts.wt. rubber compound containing carbon black (e.g., styrene-based or butadiene-based rubber) in the presence of (C) a radical polymerization initiator (e.g., thiazole-based, guanidine-based, thiuram-based initiator or zinc flower) at >=130 deg.C.
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公开(公告)号：JPH01307585A
公开(公告)日：1989-12-12
申请号：JP13748888
申请日：1988-06-06
Applicant: BRIDGESTONE CORP , GURASURON DAKUTO KK
Inventor： MOROOKA TAKUYA
Abstract: PURPOSE:To prevent the internal or the external expansion of a duct due to adsorption and blow by providing female screw members on the inwall faces of the duct and a male screw member connecting the female screw members to each other, inserting a bolt from the outside of the wall part of the duct and screwing the bolt with the female screw members. CONSTITUTION:A square glass wool duct 11 is an example of a duct having a reinforced constitution body 12 and two female screw members 13 make contact with the internal faces of the upper wall 11a and the opposing bottom wall 11b of the duct 11 via the flange parts of the members 13. Both boss parts 13b are screwed up with a male screw member 14 to connect the female members 13 with each other. Furthermore, two bolts 16 are inserted through the upper wall 11a and the bottom wall 11b of the duct 11 from the outside thereof and screwed with the female members 13 via washers 15 until tightened. As a result, the duct may sufficiently bear intake air and blow air and be reduced in resistance against fluid flow inside the duct.
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Patent Agency Ranking
公开(公告)号：JPH0197628A
公开(公告)日：1989-04-17
申请号：JP25441987
申请日：1987-10-08
Applicant: BRIDGESTONE CORP
Inventor： SHINOGAYA TOSHIKAZU , MOROOKA TAKUYA , KOYAMA HARUO
Abstract: PURPOSE:To reduce the number of steps as well as the loss of material, by filling the groove of the lower die with resin powder, by fitting the beam of the upper die for welding in an integral body on heating under pressure, and by releasing the product from the cooled die for winding on the curved surface of a drum. CONSTITUTION:The lower die 1 has a mesh groove 2, and the upper die 3 has a mesh beam 4 fitted into the groove 2. The groove 2 of the lower die 1 is filled with polyethylene powder P of molecular weight 500,000-6,000,000. Next, the beam 4 of the upper die 3 is fitted into the groove 2 to compress the powder P up to 45-70%, and the upper and lower dies 1, 3 are raised in temperature to melt the powder P of the groove 2 for welding. Then, the dies 1, 3 are cooled to release the compression force, and the molding is taken out and immediately pressed on a cylindrical drum to cool down, resulting in formation of a curved surface. As multistage filling compression, the powder P is compressed by 10-50%, and the cavity space is filled again powder P after opening of the dies; then, the powder P is compressed by 10-60%.
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公开(公告)号：JPS63276514A
公开(公告)日：1988-11-14
申请号：JP11328987
申请日：1987-05-08
Applicant: BRIDGESTONE CORP
Inventor： SHINOGATANI TOSHIKAZU , MOROOKA TAKUYA
Abstract: PURPOSE:To reduce the number production steps, avoid the generation of wasteful materials and enable easy formation of a synthetic resin net, by filling grooves of a lower metallic mold with a resin powder, and fusing the powder in a body by heating in a pressurized condition. CONSTITUTION:A lower metallic mold 1 is provided with reticulate grooves 2, and an upper metallic mold 3 is provided with reticulate protrusions 4 to be fitted into the grooves 2. The grooves 2 is filled with a powder P of polyethylene having a molecular weight of 50-5,000,000 to the brim of the grooves, then the upper mold 3 is mated, and the powder P is pressurized. The pressurization is so conducted as to achieve a 45-70% compression of the powder P. Next, the molds 1, 3 are heated to melt the powder P, thereby fusing the particles of the powder to each other. The maximum temperature in this heating is set to be not less than the melting point of the polyethylene. The molds 1, 3 are then cooled, the compressing force is released, and the molded product is taken out. Thus, the number of production steps is reduced, material loss is small, and there is no possibility of deterioration through oxidation.
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公开(公告)号：JPS63109714A
公开(公告)日：1988-05-14
申请号：JP29503986
申请日：1986-12-12
Applicant: BRIDGESTONE CORP
Inventor： WATANABE YASUHIRO , SHINOGAYA TOSHIKAZU , MOROOKA TAKUYA , MATSUSHIMA YASUSUKE
IPC: A01F12/24
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公开(公告)号：JP2001154489A
公开(公告)日：2001-06-08
申请号：JP33411499
申请日：1999-11-25
Applicant: BRIDGESTONE CORP
Inventor： MOROOKA TAKUYA
Abstract: PROBLEM TO BE SOLVED: To provide a magnetic developing roll that it can be manufactured in a simple process, processing precision is good and a desired state of a surface is easily produced. SOLUTION: Relating to the magnetic developing roll that a magnetic roll is arranged inside a sleeve, the sleeve is formed from a resin composition containing synthetic resin such as polyamide and conductive agent and a flange part is formed integrally on one edge of it.
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公开(公告)号：JP2001154478A
公开(公告)日：2001-06-08
申请号：JP33411599
申请日：1999-11-25
Applicant: BRIDGESTONE CORP
Inventor： MOROOKA TAKUYA
Abstract: PROBLEM TO BE SOLVED: To provide a nonmagnetic developing roller which may be manufactured by simple stages, is good in working accuracy and allows the easy appearance of a desired surface shape. SOLUTION: This nonmagnetic developing roller is constituted by integrally molding a hollow of solid cylindrical roller body and flange parts formed at its one end by using a resin composition containing a synthetic resin and a conducting agent.
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