摘要:
Method for forming a ceramic circuit board by forming a metal circuit pattern on a ceramic board through an active metal ingredient-containing brazing material and removing an unnecessary part of the brazing material by chemical liquor treatment.
摘要:
A substrate for mounting an electronic component, including a baseplate having a main surface formed with or without a recess. A ceramic substrate is provided on the main surface of the baseplate and has a smaller size than the baseplate. A metal layer is provided to cover both of the baseplate and the ceramic substrate. The metal layer has a surface remote from the baseplate and the ceramic substrate is made flat, the baseplate is made of a metal-ceramic composite of a metallic material and a ceramic material, and the metallic material in the composite and the metal layer have different compositions. Thereby, an integral ceramic circuit board, which is resistant to repeated thermal stress and is superior in reliability, can be realized.
摘要:
A substrate for mounting an electronic component, includes a baseplate having a main surface formed with or without a recess. A ceramic substrate is provided on the main surface of the baseplate and has a smaller size than the baseplate. A metal layer is provided to cover both of the baseplate and the ceramic substrate. The metal layer has a surface remote from the baseplate and the ceramic substrate is made flat, the baseplate is made of a metal-ceramic composite of a metallic material and a ceramic material, and the metallic material in the composite and the metal layer have different compositions. Thus, an integral ceramic circuit board, which is resistant to repeated thermal stress and is superior in reliability can be realized.
摘要:
An evaporation vessel for vacuum evaporation of electroconductive ceramic boat for use in the vacuum evaporation of a metallic or non-metallic substance by virtue of resistance heating, wherein the surface of the adjoining portion on the both sides of a cavity is lower than the top of the outside wall of the cavity.
摘要:
A substrate for mounting an electronic component, includes a baseplate having a main surface formed with or without a recess. A ceramic substrate is provided on the main surface of the baseplate and has a smaller size than the baseplate. A metal layer is provided to cover both of the baseplate and the ceramic substrate. The metal layer has a surface remote from the baseplate and the ceramic substrate is made flat, the baseplate is made of a metal-ceramic composite of a metallic material and a ceramic material, and the metallic material in the composite and the metal layer have different compositions. Thus, an integral ceramic circuit board, which is resistant to repeated thermal stress and is superior in reliability can be realized.
摘要:
A chlorosilane disproportionation catalyst comprising a tertiary amine of the formula: ##STR1## where each R represents an aliphatic hydrocarbon group and the sum of carbon atoms in the three aliphatic hydrocarbon groups as R is 12 or more, and a tertiary amine hydrochloride of the formula: ##STR2## where R is as defined above.
摘要:
According to a method of and apparatus for displaying as an autofluorescent-light image emitted from a target subject upon the irradiation thereof by a excitation light, even for cases in which a malfunction of the apparatus occurs that prevents an operator from obtaining a desired image, a standard-image is displayed so as to enable an operator to safely and expediently remove the insertion portion of the endoscope from the body of a patient, whereby the safety of the patient can be ensured. When an irregularity in the temperature of one of the light sources, the operation of one of the drive apparatus, or other cause of an operational irregularity occurring in of one of the light sources is detected by the semiconductor-laser temperature detecting means, the reference-light source temperature detecting means, or the emission-output detecting means, in response to a detection signal thereof, the standard-image display mode is switched to automatically.
摘要:
An accurate determination of the tissue state of a diseased portion is performed by use of an image obtaining apparatus employing a charge multiplying type solid state image obtaining element. A target subject is irradiated with an illuminating light that contains an excitation light, and the reflected light, which includes a fluorescence image, reflected from the target subject thereupon is detected by a charge multiplying type CCD. At this time, the fluorescent light image is passed through a rotating filter, and is detected as a wide band fluorescent light image and a narrow band fluorescent light image by the charge multiplying type CCD, and obtained as a wide band fluorescence image data and a narrow band fluorescence image data by an image processing unit. A fluorescence diagnostic image is obtained of the wide band fluorescence image data and the narrow band fluorescence image data, and displayed on a monitor.
摘要:
A glassy carbon-coated article contains a graphite substrate and a glassy carbon coating applied on the graphite substrate. The coating has a thickness of 15 to 200 microns. The glassy carbon is obtained by heating a raw material containing a thermal decomposition product of an organic polymer and a heat resistant inorganic substance. The difference of thermal expansion coefficient between the glassy carbon and the graphite substrate is not higher than 1.5.times.10.sup.-6 /.degree.C.
摘要:
A horizontal type blind having a novel mechanism for opening and closing slats which includes a pair of drive shafts juxtaposed in a housing fixed to a head box and adapted to be rotated in the same direction by pulling a slats-opening and closing cord and a pair of rollers connected to the drive shafts respectively and having two straps for holding the slats wound therearound respectively so as to feed either one of the straps while taking up the other according to the rotation of the rollers.