摘要:
The magnetic head assembly including a magnetic head having a terminal composed of a conductive film and a supporting spring. The supporting spring has interconnecting patterns (lines) on the top thereof and a projective electrode. The terminal of the magnetic head is electrically connected to the projective electrode of the supporting spring by a solderless, direct contact connection. The magnetic head is fixed to the supporting spring by using a non-electrical bonding agent. This structure makes it possible to stabilize the position of the magnetic head assembly and the relative speed variation between the magnetic head element and the magnetic disk, thereby enhancing the reliability of the magnetic disk apparatus.
摘要:
A photosensitive resin composition or photosensitive heat-curing resin composition comprising a photocurable oligomer containing 2 or more polymerizable double bonds and a carboxyl group and a heat-curing component selected from a compound containing one polymerizable double bond and one epoxy group, a compound containing one or more polymerizable double bonds and one or more blocked isocyanate groups; a photosensitive resin composition comprising a photocurable oligomer containing a carboxyl group, a blocked isocyanate group and 2 or more polymerizable double bonds; and a novel compound containing one or more polymerizable double bonds and one or more blocked isocyanate groups are disclosed. The resin compositions have high photosensitivity, excellent developability and provide a solder resist pattern with excellent properties.
摘要:
The plastic lens of the present invention consists of a copolymer obtained by copolymerizing a monomer mixture consisting of given proportions of diethylene glycol bis(allyl carbonate), benzyl methacrylate, diallyl phthalate (these three monomers has been used as a monomer mixture for conventional plastic lenses) and, as an additional monomer, an alkyl methacrylate. This copolymer has excellent adhesion to upper and lower molds and, when immersed in, for example, a cleaning solution such as a methylene chloride-strong alkali mixed cleaning solution or the like, causes no separation from the molds; accordingly in the copolymer, there can be prevented the occurrence of surface roughening, cloudiness and striae which have been problems in conventional plastic lenses.
摘要:
A printer includes improved paper feeding mechanism. A manual paper guide plate below an automatic paper feeding device can guide a thick piece of paper into a printing position on the platen without bending it hard around the platen. A pin tractor below the manual paper guide plate can feed a continuous web substantially straight into the printing position. A print head below the platen prints out on the lower surface of printing paper, whereby the printed individual cut sheets of paper being piled up one after another with the printed surface facing downward in a proper page order. A paper tray for holding the printed paper can alternatively change its position to reverse the discharge direction of the printed continuous web. The printed and reversed paper can be stacked on the upper surface of the manual paper guide plate.
摘要:
A pre-drive circuit performs on/off control of a switching transistor element (Q.sub.1) through a pulse transformer (T) having two primary windings (P.sub.1, P.sub.2). Switching elements (Q.sub.2, Q.sub.3) are respectively connected to the primary windings. Feedback circuits (D.sub.1, D.sub.2) connect signal output terminals of the respective switching elements (Q.sub.2, Q.sub.3) to control terminals of the opposite switching elements (Q.sub.3, Q.sub.2).
摘要:
A snap switch with a self-cleaning function having a switch body with a fixed contact and a movable contact for performing make-break operations. A knob, mounted on the switch body, operates a contact operation member causing the movable contact to abut the fixed contact when the knob is rotated by a predetermined rotational angle and further causing the movable contact to slide on the fixed contact when the knob is further rotated.
摘要:
A power source for control equipment which is designed so that even if one or more independent power sources (700) are added to a main power source (600), the power source arrangement, as viewed from the control equipment supplied with power therefrom, can always be regarded as if one power source were connected thereto. The operative state of control circuit power sources (601, 701) provided in the main power source (600) and the additional power source (700) is detected by control circuit power source abnormality detecting circuits (603, 703), and the operative state of driving power sources (602, 702) provided in the main power source (600) and the additional power source (700) is detected by driving power source abnormality detecting circuits (604, 704). All the driving power sources (602, 702) are turned ON substantially concurrently after the outputs from all the control circuit power sources (601, 701) have reached their normal state, and they are turned OFF substantially concurrently when the output from any one of the control circuit power sources (601, 701) has become abnormal. An enable signal (EN), which is sent to the control equipment, is turned ON after all the control circuit power sources (601, 701) and driving power sources (602, 702) have reached their normal operative state, and is turned OFF when an abnormality has occurred in any one of the power sources.
摘要:
This invention intends to provide a speaker which assumes a comparatively large area in a device without spoiling various display effects. The transparent flat panel speaker of this invention is a speaker of high efficiency which can give forth a sound volume large considering the small-sized device even when driven by a low voltage.The transparent flat panel speaker of this invention comprises, at least, a transparent resonator plate and a plate of a piezoelectric material held between at least one pair of electrodes, the resonator being excited by the piezoelectric material plate, a periphery of the resonator plate having a shape which is represented by a curve or in which straight lines are connected by smooth curves with at least two centers of curvature.As the peripheral shapes, an ellipse, a curve expressed by X.sup.n /a+Y.sup.n /b=1, a plane figure obtained by molding the corners of a polygon circumscribed or inscribed to an ellipse, etc. are especially favorable for the speaker.
摘要翻译:本发明旨在提供一种扬声器,其在设备中呈现相当大的面积而不破坏各种显示效果。 本发明的透明平板扬声器是高效率的扬声器,即使在由低电压驱动的情况下,也能够考虑到小型装置而产生较大的音量。 本发明的透明平板扬声器至少包括保持在至少一对电极之间的透明谐振器板和压电材料板,谐振器由压电材料板激励,谐振器板的周边具有 由曲线表示的形状或通过具有至少两个曲率中心的平滑曲线连接直线的形状。 作为外围形状,椭圆,由Xn / a + Yn / b = 1表示的曲线,通过模制被外接或内接于椭圆的多边形的角所获得的平面图等对扬声器是特别有利的。
摘要:
A process for producing methacrylic acid by the vapor phase catalytic oxidation of methacrolein with molecular oxygen or a molecular oxygen-containing gas comprises using a catalyst of multi-elemental complex oxide having the formulaMo.sub.a P.sub.b As.sub.c V.sub.d Cu.sub.e Ce.sub.f Cr.sub.g O.sub.hwherein a, b, c, d, e, f, g and h respectively represent atomic ratios and a=12, b=0.5 to 3.0, c=0.01 to 1.2, d=0.01 to 2.0, e=0.01 to 2.0, f=0.01 to 1.2, g=0 to 2.0; and h is decided on the valences of the other components such as usually 37 to 60 which is prepared with or without a reduction using a dibasic carboxylic acid, an oxycarboxylic acid, mannitol or pyrogallol.
摘要:
A resin composition which is low in a roughness of an insulating layer surface and capable of forming thereon a plated conductor layer having a sufficient peel strength in a wet roughing step and which is excellent in dielectric characteristics and a coefficient of thermal expansion, is disclosed. The resin composition contains a cyanate ester resin and a specified epoxy resin.