-
公开(公告)号：JP2002187171A
公开(公告)日：2002-07-02
申请号：JP2000385150
申请日：2000-12-19
Applicant: BRIDGESTONE CORP
Inventor： KONO KOTA , MOROOKA TAKUYA , TSUDA TAKASHI
Abstract: PROBLEM TO BE SOLVED: To provide a method for molding a resin pipe, capable of obtaining the resin pipe excellent in dimensional accuracy and surface accuracy. SOLUTION: A support piece 7, to which one end part of a core 4 fitted, is attached to a movable mold 3 and a gate piece 5 is attached to a fixed mold 2, and the taper surface of the support piece 7 and the taper surface of the base end part of a core 6 are joined to position the one end part of the core through the support piece, and the taper surface of the gate piece and the taper surface of the core are joined to position the other end part of the core to accurately arrange and fix the core to the predetermined position in a cavity 41 to perform molding operation.
-
公开(公告)号：JP2002173605A
公开(公告)日：2002-06-21
申请号：JP2000372693
申请日：2000-12-07
Applicant: BRIDGESTONE CORP
Inventor： TSUDA TAKASHI , KONO KOTA , MOROOKA TAKUYA
Abstract: PROBLEM TO BE SOLVED: To obtain a resin molding material capable of certainly obtaining a molded product excellent in surface smoothness and efficiently producing a molded product requiring high surface smoothness such as the substrate body for photoconductive drums and the like. SOLUTION: This resin molding material has =1.5 μm highest height Rmax defined in JIS B0601.
-
公开(公告)号：JPH09148167A
公开(公告)日：1997-06-06
申请号：JP10579196
申请日：1996-04-25
Applicant: BRIDGESTONE CORP
Inventor： SAEGUSA TETSUJI , MOROOKA TAKUYA
Abstract: PROBLEM TO BE SOLVED: To provide a method of manufacturing a hollow magnet roller which is uniform in wall thickness in an axial direction, dimensions, and magnetic characteristics and shortened in a injection molding time. SOLUTION: A magnet roller 10 equipped with a magnet roller main body 1 having a continuous hollow 3 in an axial direction is manufactured through such a method that magnetic powder-containing resin compound is injected into the cavity of a molding die and solidified by cooling for the formation of intermediate members 1A and 1B, wherein the members 1A and 1B are formed like semicircular troughs which are obtained by dividing the magnet roller main body into two pieces in an axial direction. The intermediate members 1A and 1B are fused together into the magnet roller main body 1 through an ultrasonic bonding method.
-
公开(公告)号：JPH0615841A
公开(公告)日：1994-01-25
申请号：JP19909492
申请日：1992-07-02
Applicant: BRIDGESTONE CORP
Inventor： YASUNAGA KUNIAKI , MOROOKA TAKUYA , HASEGAWA HAJIME , KIMIJIMA ISAO
IPC: B41J2/175
Abstract: PURPOSE:To alter the density only of the necessary part of the foam material inserted in an ink tank by a simple structure, in the ink tank of a recording apparatus, by forming a projection on the inner wall of the tank and compressing the foam material inserted in the ink tank by the projection to form an area partially high in density. CONSTITUTION:An air port 3 is provided to the lid member 2 of an ink tank main body 1 so that the inner pressure of an ink tank becomes same to atmospheric pressure and an ink discharge port 4 is provided to the bottom part on the side remote from the air port 3 of the main body 1 and a projection 5 is vertically provided to the lid member 2 toward the ink discharge port 4. A urethane foam material 6 is inserted in the ink tank main body 1 and the ink tank main body 1 is closed by the lid member 2. The inserted urethane foam material 6 is partially compressed by the projection 5 and a high density area A is formed to the urethane foam material 6 only in the vicinity of the ink discharge port 4. Therefore, the ink in the ink tank is successively consumed from the low density area B of the foam material 6 to the high density area A thereof and the residual amount of the ink in the ink tank is markedly reduced.
-
公开(公告)号：JPH01229113A
公开(公告)日：1989-09-12
申请号：JP5408988
申请日：1988-03-08
Applicant: BRIDGESTONE CORP
Inventor： IWASAKI SHINICHI , SAKAYORI KIYOSHI , MOROOKA TAKUYA
IPC: F16C11/04
Abstract: PURPOSE:To facilitate fitting/exchanging of a cylindrical body and to aim at its utilization as a roller by fitting a split cylinder having a hole the diameter of which is smaller than that of a head and larger than that of a shaft, to the shaft of a shaft body with the head the top of which is fixed thereto, and fitting a cylindrical body having a hole the diameter of which is larger than that of the head to the split cylinder. CONSTITUTION:A split cylinder 3 is fitted to the shaft 1B of a shaft body 1 with a head the top end of which is fixed to a base 2 and a cylindrical body 4 is fitted thereto. Hereupon, the relation among the diameters a, b of the head 1A, and the shaft 1B, the diameters c, d of the holes of the split cylinder 3 and the cylinder body 4 is to be b
-
Patent Agency Ranking
公开(公告)号：JPS6452077A
公开(公告)日：1989-02-28
申请号：JP20698187
申请日：1987-08-20
Applicant: BRIDGESTONE CORP , TOYO TERUMII KK
Inventor： IWASAKI SHINICHI , MOROOKA TAKUYA
Abstract: PURPOSE:To completely seal the external and internal thread parts and to form a chemical plating only on the surface of a resin by screwing a resin composite bolt into a resin composite nut through a metallic pipe, and allowing both ends of the pipe to abut on the coating resin. CONSTITUTION:The head 2 of a bolt base body 1 is covered with a cap 3 of nylon resin to form the resin composite bolt A. Meanwhile, a nut base body 9 is covered with a resin 10 to form the resin composite nut B. The resin composite bolt A is screwed into the resin composite nut B through the metallic pipe 17 having a diameter enough to accommodate the external thread part 18 of the composite bolt A. As a result, both ends of the metallic pipe abut on the flange 18 of the composite bolt A and the flange 13 of the composite nut B, and are sealed. Since the external and internal thread parts are sealed in this way, a required plating can be applied only on the resin surface.
-
公开(公告)号：JPS63254011A
公开(公告)日：1988-10-20
申请号：JP9049687
申请日：1987-04-13
Applicant: BRIDGESTONE CORP
Inventor： MOROOKA TAKUYA , SAKAYORI KIYOSHI , IWASAKI SHINICHI , ISHIDA YOZO , ISHIZUKA YUZO , SHINOGAYA TOSHIKAZU
IPC: F16B37/14 , B29C39/10 , B29C39/26 , B29K105/22 , B29L1/00
Abstract: PURPOSE:To improve a not tightening strength and simplify the positioning man-hours of the base body of a nut, by a method wherein the base body of the nut is arranged at a predetermined position in a cavity and the whole surface of the same is coated with a resin in a predetermined thickness. CONSTITUTION:The base body 6 of a nut is screwed into a male screw 4, projected from a mold 1 having a height higher than the same of the base body 6. The molds 1, 2 are mated to form a cavity 3 and the base body 6 is arranged at a predetermined position in the cavity 3 by the pedestal 5, surrounding the base of the male screw 4. Polyamide resin is poured into and cured in the cavity 3 under this condition. When a resin coated nut A is screwed off the male screw 4, the surface of the base body 6 is coated by the resin 7 while the outer periphery of the base body 6 is provided with a hexagonal shape to engage for turning. A round recess 8 remains in a front resin 7', formed on the base body 6, while a female screw 9 is formed on a rear surface resin 7''. The female screw 9 is formed so as to have a diameter, slightly smaller than the female screw 10 of the base body due to contraction, whereby the female screw 9 bites the male screw thread of a bolt to be screwed thereto and an effect to prevent the nut from loosening can be obtained.
-
公开(公告)号：JPS62176828A
公开(公告)日：1987-08-03
申请号：JP1878086
申请日：1986-01-30
Applicant: BRIDGESTONE CORP
Inventor： MOROOKA TAKUYA , SAKAYORI KIYOSHI , SHINOGAYA TOSHIKAZU
Abstract: PURPOSE:To execute automatically and efficiently the locking operation of a resin bolt of nut with a resin washer, by setting up a resin washer and a resin bolt or nut in stacked state at a concaved part on a turn table, by transferring this pair to just under a press cylinder, and by pressing against the resin bolt or nut with this press cylinder. CONSTITUTION:A resin washer 9 is placed in a concaved part 12 at P1 position on a turn table 11. Here the washer 9 is placed with its convex portion 10 upward, namely, the surface locking with a resin bolt or nut upward. The resin bolt or nut to be locked with the washer 9 by a hand 18 with the working of an up and down cylinder 17 at P3 position is set up with the locking surface stacked. Then by the rotation of the turn table 11 which reaches to just under the press cylinder 13 (P3 position), a rod 14 descends and presses against both member. At this time the bolt or nut presses against the resin washer 9, whereby the washer 9 deflects downwardly at the center, and the convex portion 10 naturally fits into the groove portion of the resin nut.
-
公开(公告)号：JP2006023702A
公开(公告)日：2006-01-26
申请号：JP2004348313
申请日：2004-12-01
Applicant: Bridgestone Corp , 株式会社ブリヂストン
Inventor： TAKAGI MITSUHARU , AKAMA HIDEHIRO , MOROOKA TAKUYA
IPC: G03G15/08
Abstract: PROBLEM TO BE SOLVED: To provide a lightweight developing roller capable of reliably and stably giving high quality images free of white image fogging without causing image change or image unevenness over time even in continuous printing or in partial solid image printing, and to provide an image forming apparatus with the developing roller. SOLUTION: The developing roller 1 has a shaft member 2 comprising a hollow or solid cylinder made of a resin containing a conductive agent and one or more resin layers 4 disposed on the radial outside of the shaft member. When a roller periphery is charged by causing corona discharge by applying a voltage of 8 kV to a corona discharger 42 disposed at an interval of 1 mm from the roller periphery, the absolute value of surface potential decay speed in a range from 0.1 s to 0.2 s after imparting charges is ≥0.1 [V/s]. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract translation: 要解决的问题：提供一种轻质的显影辊，其能够可靠且稳定地产生没有白色图像起雾的高质量图像，而不会在连续打印或部分实心图像打印中随时间引起图像变化或图像不均匀，并且 提供具有显影辊的图像形成装置。 解决方案：显影辊1具有轴构件2，该轴构件2包括由包含导电剂的树脂制成的中空或实心圆筒，以及设置在轴构件的径向外侧上的一个或多个树脂层4。 当通过向距离辊周边1mm设置的电晕放电器42施加8kV的电压而进行电晕放电来对辊周边进行充电时，表面电位衰减速度的绝对值在0.1s〜0.2的范围内 施加费用后≥0.1[V / s]。 版权所有（C）2006，JPO＆NCIPI
-
公开(公告)号：JP2002189382A
公开(公告)日：2002-07-05
申请号：JP2000385194
申请日：2000-12-19
Applicant: BRIDGESTONE CORP
Inventor： MOROOKA TAKUYA , TSUDA TAKASHI , KONO KOTA
Abstract: PROBLEM TO BE SOLVED: To provide a substrate for photosensitive drum capable of omitting or simplifying a step for attaching a flange and a step for carrying out electrical grounding, enhancing the production efficiency and capable of reducing the cost. SOLUTION: The substrate for photosensitive drum has a flange 2a formed on at least one end of a cylindrical resin pipe 1 comprising an electrically conductive resin composition in one body with the same resin material as the resin pipe 1.
-
-
-
-
-
-
-
-
-
Search Results
52
records
(took 0.024 seconds)
