摘要:
Subcoils are provided on the core portion that serves as a deflection yoke, and a current for correcting convergence is supplied to the subcoils to correct convergence. Further, means is provided to suppress harmful current that is produced by mutual induction between the subcoils and the deflection coils, and whereby the deflection of electron beam and the correction of convergence are effected independently of each other.
摘要:
A cathode-ray tube apparatus capable of reducing a high frequency electric field radiated from the deflection yoke and the deflection and high voltage circuit to the outside of the cathode-ray tube apparatus. Mounted on the deflection yoke or on the cathode-ray tube are an induction coil for generating a pulse voltage opposite in polarity to a high pulse voltage applied to the h and an electric field cancellation electrode made of a conductive wire to which the opposite polarity pulse voltage is applied. When the opposite polarity pulse voltage is applied to the electric field cancellation electrode, the electric field cancellation electrode radiates an electric field opposite in polarity to the high frequency electric field radiated from the deflection yoke to the outside of the cathode-ray tube apparatus to reduce the intensity of the high frequency electric field.
摘要:
A cathode-ray tube apparatus capable of reducing a high frequency electric field radiated from the deflection yoke and the deflection and high voltage circuit to the outside of the cathode-ray tube apparatus. Mounted on the deflection yoke or on the cathode-ray tube are an induction coil for generating a pulse voltage opposite in polarity to a high pulse voltage applied to the h and an electric field cancellation electrode made of a conductive wire to which the opposite polarity pulse voltage is applied. When the opposite polarity pulse voltage is applied to the electric field cancellation electrode, the electric field cancellation electrode radiates an electric field opposite in polarity to the high frequency electric field radiated from the deflection yoke to the outside of the cathode-ray tube apparatus to reduce the intensity of the high frequency electric field.
摘要:
A synthetic resin laminate for use for transparent substrate materials and transparent protective materials is excellent in interlayer adhesiveness, form stability in high-temperature and high humidity environments, surface hardness and impact resistance. The synthetic resin laminate has a vinyl copolymer resin (A) layer and a polycarbonate resin (B) layer, wherein layer (A) is directly laminated on one surface of layer (B), and in which (A) contains a (meth)acrylate structural unit (a) represented by a specific formula and an aliphatic vinyl structural unit (b) represented by a specific formula, the total proportion of the (meth)acrylate structural unit (a) and the aliphatic vinyl structural unit (b) is from 90 to 100 mol % relative to the total of all the structural units in (A), and the proportion of the (meth)acrylate structural unit (a) is from 65 to 80 mol % relative to the total of all the structural units in (A).
摘要:
In the process of the present invention, a solvent-soluble polyimide is produced by polycondensing at least one tetracarboxylic acid component with at least one diamine component in a solvent in the presence of a tertiary amine. The tetracarboxylic acid component is selected from the group consisting of tetracarboxylic dianhydrides represented by the following formula 1: wherein R is as defined in the specification, and tetracarboxylic acids and their derivatives represented by the following formula 2: wherein R and Y1 to Y4 are as defined in the specification. Unlike the conventional techniques using an excessively large amount of a chemical imidation agent such as acetic anhydride and a chemical imidation catalyst such as triethylamine, in the process of the present invention, the solvent-soluble polyimide having a high polymerization degree is easily produced in a solvent with good productivity by using only a catalytic amount of the tertiary amine.
摘要:
The disclosed relates to a convergence apparatus to be used for a single electron gun type cathode-ray tube, and relates to a convergence yoke to be used for the convergence apparatus. Each of two magnetic poles for generating a bipolar magnetic field is constituted by a first one of a plurality of core protrusions located on a horizontal or vertical axis and at least one pair of second ones of the plurality of core protrusions located at positions equiangularly and symmetrically deviated from the horizontal or vertical axis, and a ratio of an ampere turn of the coil wound on each of at least one pair of second core protrusions to an ampere turn of the coil wound on the first core protrusion is suitably changed. A firt magnetic auxiliary plate and a second magnetic auxiliary plate are provided on a first core protrusion constituting each of a first pair of magnetic poles and on a second core protrusion constituting each of a second pair of magnetic poles respectively. Each of the first and second magnetic auxiliary plates has a fork end projected along an axis perpendicular to a horizontal axis as well as a vertical axis. The first and second magnetic auxiliary plates have respective widths existing within an angular range symmetrically deviated by 45.degree. from the horizontal axis and within an angular range symmetrically deviated by 45.degree. from the vertical axis respectively. Each of the first and second magnetic auxiliary plates has a substantially Y-shaped and axisymmetrical form.
摘要:
A convergence correcting device for correcting mis-convergence of a cathode ray tube having in-line electron guns and, at the same time, correcting coma at the top and bottom of the screen, the device comprising pole pieces provided for the outermost electron beams for producing 4-pole magnetic fields used for convergence correction, a convergence yoke for applying the magnetic fields to the pole pieces, a convergence coil wound on the convergence yoke, a coil for producing a coma correcting magnetic field which cancels a leakage flux created between the right and left pole pieces by the vertical deflection coil, and current sources for supply currents to the coils.
摘要:
Provided is a thermoplastic resin laminate including: a thermoplastic transparent resin (A) layer; a thermoplastic resin (B) layer formed of a methyl methacrylate-styrene copolymer and/or an acrylonitrile-styrene copolymer; and a thermoplastic resin (C) layer formed of a polycarbonate-based resin, the (B) layer being laminated on one surface, or each of both surfaces, of the (C) layer, and the (A) layer being laminated on the surface of the (B) layer, in which the thermoplastic transparent resin (A) includes a vinyl copolymer resin containing a (meth)acrylate constituent unit (a) and an aliphatic vinyl constituent unit (b) each having a specific structure at a molar ratio between the (meth)acrylate constituent unit (a) and the aliphatic vinyl constituent unit (b) of 15:85 to 85:15. The thermoplastic resin laminate has such characteristics as to be excellent in, for example, weather resistance against high-temperature, high-humidity environments, abrasion resistance, and interlayer adhesion, and is used, as a transparent substrate material or a transparent protective material, for an optical product, and in particular, portable display devices such as portable phone terminals, portable electronic game devices, and PDA's.
摘要:
The invention provides a synthetic resin laminate having a thermoplastic resin (A) layer and a thermoplastic resin (B) layer provided on each side of the thermoplastic resin (A) layer, the thermoplastic resin (A) having a styrene structural unit content of 65 to 90 mol % with respect to all the structural units forming the resin, characterized in that the thermoplastic resin (B) is a (meth)acrylic acid ester-styrene copolymer resin which is predominantly formed of a (meth)acrylic acid ester structural unit (a) represented by formula (1) and a styrene structural unit, and which has a ratio by mole of (meth)acrylic acid ester structural unit (a) to styrene structural unit of 70:30 to 84:16. The synthetic resin laminate is excellent in transparency, anti-warpage property, interlayer adhesion, adhesion to a hard coat layer formed from a photosensitive hard coating material, scratch resistance, and weather resistance.
摘要:
A synthetic resin laminate for use for transparent substrate materials and transparent protective materials is excellent in interlayer adhesiveness, form stability in high-temperature and high humidity environments, surface hardness and impact resistance. The synthetic resin laminate has a vinyl copolymer resin (A) layer and a polycarbonate resin (B) layer, wherein layer (A) is directly laminated on one surface of layer (B), and in which (A) contains a (meth)acrylate structural unit (a) represented by a specific formula and an aliphatic vinyl structural unit (b) represented by a specific formula, the total proportion of the (meth)acrylate structural unit (a) and the aliphatic vinyl structural unit (b) is from 90 to 100 mol % relative to the total of all the structural units in (A), and the proportion of the (meth)acrylate structural unit (a) is from 65 to 80 mol % relative to the total of all the structural units in (A).