摘要:
A transparent resin obtained by polymerizing styrene, a methacrylic or acrylic acid ester, a polyfunctional monomer, and if necessary a copolymerizable vinyl monomer in the presence of a molecular weight modifier is suitable for producing a polymer lens having a low specific gravity, and excellent in transparency, edging ability with other good properties.
摘要:
A transparent resin obtained by polymerizing styrene, a methacrylic or acrylic acid ester, a polyfunctional monomer, and if necessary a copolymerizable vinyl monomer in the presence of a molecular weight modifier is suitable for producing a polymer lens having a low specific gravity, and excellent in transparency, edging ability with other good properties.
摘要:
Electroconductive composite metal powders comprising flat non-noble metal powders, each covered with a noble metal in an amount of 2 to 30% by weight in average based on the weight of the non-noble metal powders, on 50% or more in average of the whole surface area of the non-noble metal powders, interposing a layer of a mixture of the non-noble metal and noble metal between each non-noble metal powder and a noble metal covering layer, are suitable for providing an electroconductive paste after mixing with a binder, said paste showing excellent electroconductivity and prevention of migration.
摘要:
A light sensing apparatus for different control systems includes a photosensitive element which generates a light current depending on light incident thereto. A pre-circuit connected to the photosensitive element is operative for generating separate basic signals in response to the light current generated by the photosensitive element. Processing circuits connected to the pre-circuit are active simultaneously for converting the basic signals generated by the pre-circuit into conversion-resultant signals having different forms respectively. The conversion-resultant signals are outputted to the control systems respectively. At least one of the processing circuits may include an oscillation circuit which oscillates at a frequency depending on related one of the basic signals generated by the pre-circuit.
摘要:
A communication apparatus is used in a communication system, having a communication line, where an operation timing in each of the communication apparatus is coupled to the communication line and synchronized with the received signals in each of the communication apparatus. This communication apparatus comprises a signal-chip microprocessor having a central processing unit for executing main and interruption processing, a register storing data to be transmitted next, an output buffer for transmitting the transmission data, and an edge detector for detecting an edge in the communication line. The output buffer is directly responsive to an edge detection circuit, so that the transmission data can be immediately transmitted in response to the detection of an edge without a variable delay time caused by the operation condition which may be varied by the interruption processing or like.
摘要:
For a system which receives a sleep command to terminate the application of machine clock signals to a microprocessor and which clocks control execution time and stabilization time after the return from sleep control and resumes the supply of the machine clock signal, the clocking device for each of the time durations is implemented using a small-scale timing device. Following a sleep command from a microprocessor, sleep control, which terminates the operation of the main oscillator and the machine clock generation circuit that generates the machine clock signal based on the oscillation of the main oscillator, is started. Then, counting the oscillation signal from an RC oscillator used for clocking using an RC timer, the lapse time after starting sleep control is started and if the clocked time reaches a predetermined time, the main oscillator is reactivated. After reactivating the main oscillator, the RC timer is reset so that it begins to count the time thereafter starting from "0" and if the clocked time reaches the time needed for the oscillation of the main oscillator to stabilize, the machine clock generation circuit resumes its operations.
摘要:
1,3-Bis(dicarboxyphenyl)-1,1,3,3-tetraphenyldisiloxane derivatives useful as raw materials of polyimide resins, hardeners for epoxy resins and others and process for producing these derivatives, and polyamic acid and polyamic acid ester, and polyimide resins and processes for producing them from said disiloxane derivatives. The polyimide resins are good in properties such as adhesion to silicon substrates, heat resistance and mechanical properties.
摘要:
Data formulated according to a user's request signal is transmitted from a transmitter device to a receiver device under a wireless or a wired system. The transmitter device includes a transmission controller that formulates the data to be transmitted and memorizes the request signal as a backup signal. If the data transmission is not completed due to a power source trouble such as a voltage drop, the data to be transmitted is automatically formulated again based on the backup signal and sent out to the receiver. If the data transmission is successful, the backup signal is eliminated from a memory. Thus, the data requested by the user is transmitted without fail even if the transmitter becomes temporarily inoperative.
摘要:
A photosensitive resin composition comprising an aromatic polyimide precursor, wherein a 35 &mgr;m film made by imidating ring closure on a silicon substrate has a light transmittance at a wavelength of 365 nm of at least 1% and a residual stress of at most 25 MPa. The composition can be patterned through i-line exposure followed by development with alkaline solutions, and can be imidized into low-stress polyimide patterns. Electronic components having the polyimide patterns have high reliability.
摘要:
In the method for the preparation of a laminated ferrite inductor device comprising the steps of: laminating a ferrite green sheet lined with and supported by a substrate film of, for example, polyethylene terephthalate provided with a penetrating through-hole and a coil pattern to a second ferrite green sheet followed by removal of the substrate film by peeling to form a laminate of ferrite green sheets to be subjected to sintering, peelability of the substrate film from the ferrite green sheet can be improved to prevent the ferrite green sheet from occurrence of defects such as breaking, crease formation and stretching by providing a snap groove of an adequate incision depth having a rectangular profile of a frame and, along the outer periphery of the snap groove, a peel-facilitating reinforcement pattern by printing with a printing paste to have a specified line width and printing thickness.