摘要:
The present invention provides a non-halogen polyamide-imide resin soluble in an amide solvent at a concentration of 10%, the resulting varnish, when stored at 5° C. for 1 month, exhibiting a solution viscosity change ((solution viscosity after 1 month−initial solution viscosity)/initial solution viscosity), expressed as an absolute value, of not greater than 3.0, and the resin having a moisture absorption (25° C., 90% RH, 24 hours) of not greater than 2.0%; a flexible metal-clad laminates using such a resin; and a flexible printed wiring board prepared from such a flexible metal-clad laminate by circuit formation. The flexible metal-clad laminate of the invention does not curl under any conditions, including humid conditions, and exhibits excellent dimensional stability since the heat resistant resin used as an insulation material has low moisture absorption and low thermal expansion coefficient and there is less internal stress in the flexible metal-clad laminate. Moreover, since the solder heat resistance and the insulation properties are not impaired even after humidification and since the heat resistant resin is soluble in organic solvents with high solution stability, the flexible metal-clad laminate of the invention can be inexpensively produced.
摘要:
There are provided a water-lifting pump apparatus which is free of a discharge valve and a check valve, is low in cost, and is capable of reducing vibration and noise due to a waterfall after the end of water pumping operation, and a method of controlling operation of the water-lifting pump apparatus. The water-lifting pump apparatus has a suction tank (10), a discharge tank (20), a pump (30) for pumping water in the suction tank (10) into the discharge tank (20), and a discharge piping (50) connected to a discharge side of the pump, an actuating means (60) for actuating the pump (50), a reverse flow preventing mechanism (80) for preventing a reverse flow of water pumped into the discharge tank (20) toward the discharge piping (50), and a back flow rate control means (90) for controlling the flow rate of a waterfall falling from the discharge piping (50) into the suction tank (10) when pumping operation is finished.
摘要:
A stretching method and apparatus of an optical fiber base material including gripping both ends in a longitudinal direction of an optical fiber base material by a pair of gripping devices, and, while pulling the optical fiber base material by moving one or both of the pair of the gripping devices in a first direction parallel to the longitudinal direction, moving a heating device relative to the optical fiber base material in a second direction opposite to the first direction, wherein stretch of the optical fiber base material is performed while changing the relative moving speed Vb(x) in accordance with expression (1): Vb·[Dmax/D(x)]2≦Vb(x)≦Vb·[Dmax/D(x)]3 (1) where Vb represents a reference speed, Dmax represents a maximum outer diameter of the optical fiber base material, D(x) represents an outer diameter at a heated position x of the optical fiber base material, and Vb(x) represents a relative moving speed of the heating device relative to the optical fiber base material at the heated position x.
摘要:
An object of the present invention is to provide an embossed crepe paper which can clearly be formed into fine embossed shapes, and is excellent in the fluffy feel and therefore excellent in such as absorbency for fats. As a means of achieving this object, the method for manufacturing an embossed crepe paper, according to the present invention, is a method for manufacturing an embossed crepe paper comprising a step of embossing a raw crepe paper, wherein: a raw paper having a basis weight of 6 to 28 g/m2 is used as the raw crepe paper; and the embossing step includes the steps of: (a) supplying the raw crepe paper with water in an amount of 0.1 to 100 weight % based on the basis weight to thereby put the raw crepe paper in a wet condition; (b) embossing the wet-conditioned raw crepe paper; and (c) drying the embossed wet-conditioned raw crepe paper.
摘要翻译:本发明的目的是提供一种压花皱纹纸,其可以明显地形成为细小的浮雕形状,并且蓬松感觉优异,因此对于脂肪的吸收性优异。 作为实现该目的的手段,根据本发明的压纹皱纹纸的制造方法是一种压纹皱纹纸的制造方法,其特征在于,包括对原料绉纸进行压花的工序,其中, 重量为6〜28g / m 2的原料作为起皱纸使用; 并且压花步骤包括以下步骤:(a)以原料重量为基准,以0.1至100重量%的量向原料起皱纸供应水,从而使生皱纹纸处于潮湿状态; (b)将湿绉原料绉纹纸压花; 和(c)干燥压花的湿条纹生绉纸。
摘要:
An AR measuring apparatus receives the reflection light of an optical beam irradiated on an optical recording medium having a recording surface on which pre-pits are repeatedly formed between tracks by means of a first light receiving surface and a second light receiving surface, obtains a push-pull signal based on the difference between light receiving signals from the first and second light receiving surfaces, collects sample data by sampling the push-pull signals for a predetermined period of time, repeats the sampling for the predetermined period of time by a plurality of times, determines whether or not each data value corresponding to a pre-pit position of the sample data by the plurality of times is obtained by a predetermined number of times or greater, and when data values obtained by the predetermined number of times or greater are determined, calculates as an aperture ratio, a ratio between the minimum value and the maximum value of values corresponding to a pre-pit component of the data values obtained by the predetermined number of times or greater.
摘要:
In the operation button structure, pressing switch contact portions are satisfactorily pressed by a tilting button operating member even if the button operating member and the switch contact portions are a long distance apart from each other or positions of the switch contact portions vary. When an operator's finger presses a right end of a button operating member, a pressing portion on a right side moves in a direction perpendicular to an upper surface of a substrate, whereby a switch contact portion on the right side is pressed. On the other hand, when the finger is lifted from the button operating member, the pressing portion retracts from the switch contact portion by a connecting portion formed in a shape having elasticity.
摘要:
An optically recorded information recording and/or reading apparatus which eliminates the influence of stray light occurring within an optical system. In a state or a focus state which is forcedly set to position a reading point outside the outermost periphery of a disk surface, and the signal level is adjusted in a signal combiner circuit such that a light receiving level at that time matches a desired level.
摘要:
A method for manufacturing an optical fiber comprises setting a heating condition for heating a glass rod, which is a parent material of the optical fiber, and an elongating speed of the glass rod based on a prescribed numerical value which changes with a progress of elongation of the glass rod; heating and elongating the glass rod to generate a preform based on the heating condition and the elongating speed which are set by the setting; and drawing the preform to a filament-like form by further heating the preform to generate the optical fiber.
摘要:
An electronic equipment comprises a battery storage section that may store two types of rectangular battery which are mutually different in thickness, and a cover that covers the battery storage section, in which the electronic equipment is operative upon receipt of an electric power from the rectangular battery stored in the battery storage section. The battery storage section has a holding member movable between a holding position in which a thin rectangular battery is held and a save position in which it is permitted that a thick rectangular battery is stored in the battery storage section. The cover has a stopper section that stops the holding member at both times when the holding member is at the holding position and when the holding member is at the save position.
摘要:
An information recording apparatus for recording record information onto a record medium, on which (i) a plurality of information groups each comprising one series of the record information and (ii) management information including positional information indicating a recorded area of each of the information groups are recordable, is provided with: a detecting device for detecting the management information, which is recorded in advance on the record medium, from the record medium; a recording device for newly recording the record information onto the record medium; an outputting device for outputting an identification information to identify the information groups, which are recorded in advance on the record medium, on the basis of the detected management information while the recording device is newly recording the record information; a specifying device for specifying an erasable information from among the information groups which are identified by the outputted identification information while the recording device is newly recording the record information; and a controlling device for controlling the recording device to newly record the record information to a recordable area, which includes the recorded area of the specified erasable information as well as a non-recorded area where the record information is not recorded, of the record medium on the basis of the positional information included in the detected management information.