摘要:
A patterned structure including a plurality of patterned sheet members (2, 4, 12, 14, 22, 24, 32, 34) which have respective configurations and which are partially superposed on each other and which cooperate with each other to define a plurality of voids (8, 18, 28, 38). At least one (2, 4, 12, 14, 22, 32, 34) of the sheet members includes a thin-walled portion (2a, 4a, 12a, 12b, 14a, 14b, 22a, 32a, 34a) whose thickness is smaller than a thickness of the other portion (2b, 4b, 12c, 14c, 22b, 32b, 34b). The thin-walled portion is formed by etching the appropriate sheet member or members. The thin-walled portion of one sheet member engages the corresponding thin-walled portion or the other portion of the other sheet member or members.
摘要:
A patterned structure including a plurality of patterned sheet members (2, 4, 12, 14, 22, 24, 32, 34) which have respective configurations and which are partially superposed on each other and which cooperate with each other to define a plurality of voids (8, 18, 28, 38). At least one (2, 4, 12, 14, 22, 32, 34) of the sheet members includes a thin-walled portion (2a, 4a, 12a, 12b, 14a, 14b, 22a, 32a, 34a) whose thickness is smaller than a thickness of the other portion (2b, 4b, 12c, 14c, 22b, 32b, 34b). The thin-walled portion is formed by etching the appropriate sheet member or members. The thin-walled portion of one sheet member engages the corresponding thin-walled portion or the other portion of the other sheet member or members.
摘要:
A printing apparatus, for printing on a recording medium by using an ink film which has an electrically resistive layer and a thermally fusible and transferable ink layer, has a thermal head which has a substrate (6) and a plurality of recording electrodes (7) disposed on the substrate. Each electrode has a contact portion (8) held in contact with the resistive layer of the ink film. The contact portions of two electrodes cooperate to energize the electrically resistive layer of the ink film, so that the energized portion generates Joule heat for softening the ink material and transferring the softened ink material onto a recording medium. To give the head the desired wear resistance, the substrate (6) of the thermal head is made of a material having a low wear resistance, and at least the contact portion (8) of each electrode (7) is made of an electrically conductive material which has a major component which is a metal silicide; at least one of the metals chromium, titanium, tantalum, zirconium, hafnium and niobium; or at least one alloy or metal compound which contains at least one of those metals.
摘要:
There are disclosed zirconia ceramics consisting mainly of Zr0 2 and Y 2 0 3 in a molar ratio of Y 2 O 3 /ZrO 2 of 2/98-7/93 and consisting of crystal grains having a mixed phase comprising a tetragonal phase and a cubic phase or having a phase comprising a tetragonal phase, the average size of the crystal grains being not larger than 2µm; such ceramics have a high strength and undergo little deterioration in strength with lapse of time. There is also disclosed a method of producing such zirconia ceramics, by mixing zirconium oxide having a crystallite size of not larger than 1,000 A or amorphous zirconium oxide with an yttrium compound in the above mixing ratio, moulding the mixture into an article, and firing the moulded article at 1,000 to 1,550 °C.
摘要:
A printing apparatus, for printing on a recording medium by using an ink film which has an electrically resistive layer and a thermally fusible and transferable ink layer, has a thermal head which has a substrate (6) and a plurality of recording electrodes (7) disposed on the substrate. Each electrode has a contact portion (8) held in contact with the resistive layer of the ink film. The contact portions of two electrodes cooperate to energize the electrically resistive layer of the ink film, so that the energized portion generates Joule heat for softening the ink material and transferring the softened ink material onto a recording medium. To give the head the desired wear resistance, the substrate (6) of the thermal head is made of a material having a low wear resistance, and at least the contact portion (8) of each electrode (7) is made of an electrically conductive material which has a major component which is a metal silicide; at least one of the metals chromium, titanium, tantalum, zirconium, hafnium and niobium; or at least one alloy or metal compound which contains at least one of those metals.
摘要:
A thermoelectric conversion module having a large capacity and a curved surface is manufactured by immersing a honeycomb structural body having a number of through holes, openings of every other through holes being closed by clogging members, into a semiconductor material melt of one conductivity type to suck the semiconductor material melt into through holes whose openings are not closed, cooling the thus sucked semiconductor material melt to form semiconductor elements of one conductivity type, immersing again the honeycomb structural body after removing said clogging members into a semiconductor material melt of the other conductivity type to suck the semiconductor material melt into the through holes, cooling the thus sucked semiconductor material melt to form semiconductor elements of the other conductivity type, cutting the honeycomb structural body into a plurality of thermoelectric conversion module main bodies, and providing metal electrodes of both surfaces of a thermoelectric conversion module main body such that alternate semiconductor elements of one and the other conductivity types are connected in cascade.