摘要:
A projection optical apparatus used for projecting a pattern in the photolithographic operation for semiconductor device fabrication and a photographic mask used with the apparatus. In the projection optical apparatus, the reflected light from the pattern of a mask is utilized in place of the transmitted light through the pattern of the mask for the purpose of projecting the pattern. For this purpose, the projection optical apparatus includes illuminating optical means for projecting an illuminating light to the pattern of the mask and light guide means for directing the illuminating light reflected by the pattern of the mask to a projection optical system. A mask adapted for use with the apparatus contains a pattern composed of two opaque areas which are different in reflectance from each other.
摘要:
In order to obtain a 3D circuit board manufacturing method capable of improving productivity and accuracy of circuit formation, the metal hoop material 1 provided with the positioning pilot holes 2 is employed. Since the 3D structures 3 are formed on the hoop material 1 with a preset interval maintained therebetween in a lengthwise direction of the hoop material 1, the series of processes can be conducted on a roll 1A (winding of the hoop material 1) basis, which results that handling between the individual processes can be done more easily while increase of troubles and manufacturing costs can be prevented. Further, since the positioning pilot holes 2 serve to facilitate accurate positioning, plating and/or laser processing can be conducted continuously with high precision while a tact time for the positioning work can be reduced.
摘要:
The invention provides an apparatus including first and second steering column members disposed for movement relative to one another. The apparatus also includes an anvil associated with one of the first and second steering column members. The anvil is spaced from the other of the first and second steering column members. The apparatus also includes a strap having a mounting end fixedly associated with the other of the first and second steering column members. The strap also includes a free end spaced from the mounting end. The strap is drawable over the anvil in response to movement between the first and second steering column members. The strap also includes a slot extending away from the mounting end to the free end. The slot has a length and a variable width along at least a portion of its length.
摘要:
A gas cushion apparatus with a support member to hold a blank, gas pressure cylinders that push the support member upwards, a hydraulic cylinder whose upper rod is connected to the support member, a pneumo-hydraulic converter for secondary lifting with a piston that partitions the interior into an oil chamber communicating with the oil chamber on the side of the rod of the hydraulic cylinder and a gas chamber, a check valve that allows oil to flow from the oil chamber on the side opposite to the above-mentioned rod to the oil chamber on the side of the aforementioned rod, and a drain port communicating with the oil chamber on the side of the above-mentioned rod of the hydraulic cylinder.
摘要:
A printer rolling includes a surface layer roughened by forming a plurality of lattice-shaped grooves such that a large number of diamond-shaped configurations are defined by the grooves, each diamond-shaped configuration including two diagonally facing corners each having an angle of 20.degree. to 160.degree., or by forming a number of parallel grooves each forming an angle of 10.degree. to 80.degree. with the axis of the metal core, so as to form a continuous groove.
摘要:
A television camera equipped with an active filter section capable of producing dynamic special effects in the picture. The filter section of the camera includes an electro-optic light control device which is arranged in the optical path of the imaging optical section of the television camera such that its light transmittance for the incident light to the image screen of the camera is varied in response to the application of an electric signal, and the variable transmittance area is divided into a plurality of sections adapted to be controlled and drived selectively. Also, the camera includes a drive unit for selectively controlling and driving the sections of the electro-optic light control device so as to vary with time the spread of the area of the sections having the transmittance varied in response to the application of the electric signal.
摘要:
The object of the invention is to provide an aqueous coating agent which I applied onto a recording medium in the ink-jet system to form a film excellent in scratch resistance, water resistance and gloss on the surface of an image, and an aqueous coating solution containing this aqueous coating agent. The means for solving is an aqueous coating agent for pigment ink-jet, which is characterized by comprising a graft copolymer that has a silicone-based side chain, and an ethylenically unsaturated carboxylic acid-containing monomer as an essential constituent in a main chain, and has an acid value in the range from 40 to 200 mg-KOH/g (solid) and a weight-average molecular weight in the range from 5,000 to 30,000; and an aqueous coating solution for pigment ink-jet comprising the aqueous coating agent which is characterized in that the aqueous coating solution is charged into a tank different from a tank for pigment ink, and is ejected and applied onto a recorded material from a nozzle different from a nozzle for pigment ink in ink-jet system.
摘要:
A water-soluble thickener which is highly effective even in thickening strongly acidic aqueous solutions and has excellent stability in such solutions. It comprises a water-soluble copolymer having a weight-average molecular weight of 6,000,000 or higher obtainable by polymerizing a monomer mixture which comprises 2-acrylamido-2-methylpropanesulfonic acid and/or a salt thereof and acrylic acid and/or a salt thereof as essential components and optionally one or more other copolymerizable monomer components including the compound represented by the following Formula (1) and/or a salt thereof, wherein the 2-acrylamido-2-methylpropanesulfonic acid and/or a salt thereof represents 20 mol % or more of all the monomers. (wherein n is an integer of 1 to 12).
摘要:
An aqueous resin composition for coating a metal, which can form a coating film having excellent water resistance and also having high hardness and excellent workability even after being subjected to a pressurized steam treatment is provided. The aqueous resin composition comprises (A) an aqueous copolymer obtained by neutralizing with a base carboxyl groups in a copolymer which is obtained by copolymerizing (a) a macromonomer which is a copolymer of N-alkoxymethyl (meth)acrylamide monomer units and other .alpha.,.beta.-ethylenically unsaturated monomer units, having a radically polymerizable group at one end thereof, (b) .alpha.,.beta.-ethylenically unsaturated carboxylic acid, (c) hydroxyalkyl (meth)acrylate, and (d) other .alpha.,.beta.-ethylenically unsaturated monomers, in specific proportions, and (B) an amino resin.