摘要:
A process of cleaning the interior of a semiconductor substrate containing metallic impurities therein is provided. The semiconductor substrate is heated, with one side or the both sides thereof being in contact with a melt of a metal or an inorganic salt, at a high temperature such that the melt does not react with these semiconductor and the semiconductor is not melted. By this process, the impurities present inside the substrate are removed out of the substrate and the interior thereof is cleaned.
摘要:
A method of removing metallic impurities diffused in a semiconductor substrate, comprising, the semiconductor-substrate-heating step of heating a semiconductor substrate to at least 200.degree. C. or higher and promoting the release and rediffusion of metallic impurities diffused in the semiconductor substrate, and the metallic-impurity-removing step of dissolving the metallic impurities arrived at the surface of the semiconductor substrate with a chemical agent and removing them from the substrate.
摘要:
A laminated film comprising (A) an aromatic polyester film; and (B) a hydrophilic coating layer which is present on at least one side of the aromatic polyester film (A) and has a surface energy of at least 54 dyne/cm, the coating layer comprising (a) 50 to 80% by weight of a copolyester which contains a dicarboxylic acid component having a sulfonate group in an amount of 1 to 16 mol % of the total of all dicarboxylic acid components and has a secondary transition point of 20 to 90.degree. C., (b) 10 to 30% by weight of poly(alkylene oxide) homopolymer having a number average molecular weight of 600 to 2,000, and (c) 3 to 25% by weight of fine particles having an average particle diameter of 20 to 80 nm, based on the total of components (a), (b) and (c). The above laminated film is useful as a transparency for an overhead projector and a recording paper for an ink jet printer.
摘要:
A method of treating a semiconductor substrate, which comprises the steps of subjecting a surface of the semiconductor substrate to an annealing treatment, performing an etching treatment of the surface of the semiconductor substrate under a condition where the semiconductor substrate is substantially prevented from being etched and a precipitate exposed from the surface of the semiconductor substrate is selectively etched away, and forming a monocrystalline film of a semiconductor material constituting the semiconductor substrate on the surface of the semiconductor substrate.
摘要:
In a system allowing an application program (client) to call a procedure of another application program (server), when the client requests the server to supply a procedure call syntax, the server writes the procedure call syntax in a link management table. Thereafter, when the client searches the procedure call syntax from the link management table and calls the procedure, the server executes the procedure. Upon request of the procedure call, the server writes the procedure name and argument list specific to the server in the link management record. It is therefore unnecessary to consider the procedure call method when the client makes application programs.
摘要:
A base film for a photographic film, wherein (a) the refractive index (nz) in the thickness direction is at least 1.498, (b) the haze value is 2.0% or less, (c) the base film has one direction in which the tan.delta. value, at 80.degree. C. by tensile viscoelasticity at 0.05 Hz, is 0.09 or less, (d) the anti-curling ratio at 70.degree. C. is at least 45%, (e) the thickness is in the range of from 40 to 120 .mu.m, and (f) the base film is formed from polyethylene-2,6-naphthalendedicarboxylate as a substantial raw material. This base film has various performances such as anti-curling properties, transparency and lubricity, suitable for use in a photographic film.
摘要:
A multi-processor system wherein two processors are connected through a dual port memory which receives from one of the processors an interruption request signal together with the data to be transmitted to the other processor. The dual port memory then generates an interrupt signal for the other processor so that the other processor can fetch the data from the dual port memory using an interrupt procedure. The one processor also receives the interrupt signal transmitted by the dual port memory in order to confirm the status of the interrupt signal generating function of the dual port memory.
摘要:
A recording apparatus and, more particularly, a so-called thermal printer employs a thermal head as a recording head. A platen roller is in pressing engagement with the recording head and recording elements pass between the two. Biasing forces exerted on opposite ends of the recording head cause it to deform slightly. To accommodate for this deformation, the diameter of the platen roller is greater in the middle than at its opposite ends. This construction assures that both the recording head and the platen roller are pressed against each other under a uniform force, so that ink density irregularity on the recording paper, creasing of the recording paper and the ink sheet, and recording density irregularity resulting therefrom can be prevented, and thus stable recording performance can be assured.
摘要:
A paper feed apparatus includes, in a cassette, a separation plate mounted upright so that it is positioned close to a feed roller slightly forward thereof in the direction of paper feed, and an upper guide plate mounted so that it is positioned above a stack of papers being fed and at a level about even with the upper end of the separation plate when the forward end of the upper guide plate is pivotably moved downward. A guide plate, the position of which is adjustable according to the size of papers, partially guides the papers at one side thereof as seen in paper feed direction.
摘要:
A variable lead end mill has a plurality of peripheral cutting edges with different helix angles, the variable lead end mill having a flute bottom diameter of a plurality of helix flutes making up rake faces of the plurality of the peripheral cutting edges, the flute bottom diameter increasing in an axial direction from a tool tip toward a shank.