摘要:
A developing apparatus has a developer bearing member for bearing and carrying a nonmagnetic developer, a layer thickness regulating member for regulating a layer thickness of the developer borne by the developer bearing member, developing bias applying device for applying an alternating current voltage to the developer bearing member, and regulating member bias applying device for applying a direct current voltage to the layer thickness regulating member, and wherein |DC1|>|DC2| is satisfied when DC1 is an effective value of the alternating current voltage applied to the developer bearing member and DC2 is a value of the direct current voltage applied to the layer thickness regulating member, the direct current voltage value DC2 has a polarity, which is reverse to a charging polarity of the developer with respect to the effective value DC1.
摘要:
A portable massage device having kneading, finger rolling and tapping rolling features, so as to provide three kinds of massage effects. In order to provide these massage effects, a driving mechanism is disposed on a fixed plate and includes a driven rotary shaft. The speed of the driving mechanism can be changed, and two drum shaped tube members are provided which include a plurality of kneading members. The drum shaped tube members are oriented adjacent opposite ends of the driven shaft, and a pair of round plates are provided at the inner ends of the respective drum shaped members so that kneading massage can be provided. Finger rolling and tapping rolling massage can be provided by the kneading members.
摘要:
A portable massage device for providing effects of finger pressing massage and kneading massage (like fingers of a person repeatedly gripping and separating from each other) by kneading members including a driving mechanism 2 which is disposed on one of a pair of fixed plates 11 of a frame 1, a driven rotary shaft 3 which is rotatably held on the frame and driven to rotate by the driving member 2, driven rotary plates 4 which are disposed on the center part of the driven rotary shaft 3 and driven to rotate by the driving member 2, cam parts 41 which have a convex and concave surface 42 formed on one end, kneading members 5 which are disposed on shaft 3 and slide freely thereon, and have cam receiving parts 51 to contact the cam parts 41 of the driven rotary plates 4 for moving the kneading members toward and away from each other on the shaft 3, and a power spring member 6 which is disposed on the two kneading members 6 to make the motions of the kneading members 5 repeat continuously.
摘要:
Apparatus for loading and unloading a tape-type recording medium in a recording/reproducing device, such as a VTR. The apparatus has a rotary drum carrying magnetic heads, and a pair of rail members arranged around the rotary drum and each having a first elongated slot formed therein. Tape guides are guided along respective rail members, and a drum base is provided having a drum support portion for supporting the rotary drum. Second elongated slots are formed at the outer side of the drum support portion, the second elongated slots being connected to corresponding first elongated grooves so as to form continuous guide grooves for guiding the tape guides. Interconnectors are provided either on the drum base or on the rail members so as to interconnect the portions which define the elongated slots in the regions of these grooves near their open ends to prevent bending of the slots.
摘要:
A cutter body for counter sink drilling fiber reinforced plastic materials, such cutter body having a pilot portion at a distal end of the cutter body and a countersinking section formed adjacent to the pilot portion in a region on the base end side of the cutter body. The countersinking section comprises three unit machining sections disposed with equal angular intervals in the circumferential direction of the cutter body. Each unit machining section comprises an abrasive layer formed by electrodepositing diamond abrasive grains on a conical surface in turn provided on the cutter body with a chip discharge groove and a finishing edge overhanging from the abrasive layer by an amount t and disposed in order successively rearward in the direction of rotation of a drill or cutter. The finishing edge is formed on a hard sinter, which contains diamond grains as a main ingredient, on a laminar sinter.
摘要:
A fire-retardant polycarbonate resin composition comprising 100 parts by weight of a halogen atom-free conventional polycarbonate resin having a viscosity-average molecular weight of 10,000 to 30,000, a fire retardant in an amount necessary for imparting fire retardance, and 5 to 60 parts by weight of a halogen atom-free ultrahigh-molecular-weight polycarbonate resin having a viscosity-average molecular weight of 100,000 to 250,000, said composition showing a flow value of 0.01 to 0.3 cm.sup.3 /sec when measured at 280.degree. C. under a load of 180 kg/cm.sup.2 using a die having a hold diameter of 1 mm and a length of 10 mm and performance rated at class V-0 when conducting a burning test in accordance with a UL-94 test about a test piece having a thickness of 1 mm.