摘要:
Disclosed is an electrophotographic member containing as a charge transport material a fluorine-containing N,N,N',N'-tetraarylbenzidine derivative which is remarkably excellent in solubility in an organic solvent and/or a binder such as polycarbonate resin, etc., can show very excellent electrophotographic properties such as high sensitivity, low residual potential and high durability. Further, a fluorine-containing N,N,N',N'-tetraarylbenzidine derivative usable as a charge transport material, and a process for producing the same are disclosed. Furthermore, a fluorine-containing diarylamine usable for producing the fluorine-containing N,N,N',N'-tetraarylbenzidine derivative, and a process for producing the same are disclosed.
摘要:
An enamine derivative containing a fluoroalkyl group, a fluoroaryl group or a fluoroaralkyl group is effective as a charge transport material in an electrophotographic member excellent in sensitivity, residual potential, durability and the like electrophotographic properties.
摘要:
A golf club head 2 includes a face line 8 having a depth of D1 (mm) and a land area LA. When a boundary point between the land area LA and the face line 8 in a section line of a surface of the face line 8 is defined as Pa; a point of which a depth is T1 (mm) is defined as Pb; and a curvature radius of the section line between the point Pa and the point Pb is defined as R1 (mm), the golf club head 2 satisfies the following formulae (1) and (2): R1>T1 (1) 0.10≦T1≦0.5 (2) Preferably, a ratio (R1/T1) is greater than 1.0 and is equal to or less than 3.0.
摘要:
Disclosed is an information processing device with lighting function that realizes reduced power consumption and cost reductions. The optical connecting member 17 flexibly connects between a light guide plate 14 of a displaying part side and a light guide plate 21 of a key operating part side, thereby guiding light emitted from a white light LED 13 of a displaying part side to key operating part side.
摘要:
A hollow metal golf club head having a shell structure comprises a crown portion having a thickness gradually decreasing from the front edge toward the rear end of the head. A method of manufacturing the head comprises: making a face plate having an upper turnback which defines a front zone of the crown portion; making a crown plate which defines a back zone of the crown portion; making a hollow main shell having a front opening, a top opening and an in-between lateral frame defining a middle zone of the crown portion; and welding the face and crown plats to the main shell to cover the openings.
摘要:
A hologram optical element having a thin form and a high degree of light transmittance, moreover that provides superior handling ease, as well as a surface light source device employing this hologram optical element. The angle at which light can be bent in this hologram optical element, has low wavelength dependency, and the hologram optical element enables prevention of spectral separation in white light incident from an oblique direction which is bent to a vertical direction and emitted. A transmitting diffraction grating, when light of wavelengths λ1, λ2 and λ3 within the ranges 0.46≦λ1≦0.50 μm (blue light), 0.53≦λ2≦0.57 μm (green light), 0.60≦λ3≦0.64 μm (red light) is incident at angle θi, the maximum diffraction angle for diffractive efficiency of each wavelength is within the range from −5 degrees to +5 degrees.
摘要:
A golf club head comprises a face plate comprising a base portion including a front surface forming a club face for hitting a ball, a circumferential surface forming a front zone of a circumference of the club head, and a rib protruding from a back surface of the base portion backwardly and extending along the circumferential surface of the base portion so as to define a first region surrounded thereby on the back surface, and a head main body being provided with a face mount, the face mount comprising a recess holding the rib without contacting the first region.
摘要:
A back light device realizing improvement in hotspots and bright line in the region of light incidence and of darkness arising in between light sources is provided by forming the reflective surface of the reflector as a structured face comprising an iteration of prism elements of trapezoidal section.
摘要:
A hollow golf club head having a face portion for hitting a golf ball comprises a main body made of at least one kind of metal material, said main body having the face portion and at least two openings, and cover members attached to said main body so as to cover said openings, said cover members comprising at least one resin cover member made of a fiber reinforced resin and at least one metal cover member made of a metal material, and said resin cover member and said metal cover member each having specific gravity less than said main body.
摘要:
A golf club head including a face member forming at least a part of the club face for hitting a golf ball, and a main body to which the face member is attached in the form of a junction, in which the joint surface of the face member and the joint surface of the main body come into contact with each other, and at least one of the joint surface of the face member and the joint surface of the main body is machined using a machine tool such as NC lathe turning machine and NC milling machine.