摘要:
Provided is a natural leather having a novel coating layer which feels leathery. The coating film retains material properties such as strength and wearing resistance. When the user directly touches the natural leather, the coating layer present on the surface of the natural leather gives slick characteristics of natural leathers and smoothness. The natural leather has a coating film formed on a surface thereof, the coating film including: a color coat layer formed from a mixture of a hard component (10% modulus is more than 2.3 but no more than 3.0) and a soft component (10% modulus is more than 0.0 but no more than 1.0) of a two-component polyurethane resin; and a topcoat layer formed from a mixture of a medium component (resin having a 10% modulus of more than 1.0 but no more than 2.3) and a soft component (resin having a 10% modulus of more than 0.0 but no more than 1.0) of a two-component polyurethane resin.
摘要:
Provided is a natural leather having a novel coating layer which feels leathery. The coating film retains material properties such as strength and wearing resistance. When the user directly touches the natural leather, the coating layer present on the surface of the natural leather gives slick characteristics of natural leathers and smoothness. The natural leather has a coating film formed on a surface thereof, the coating film including: a color coat layer formed from a mixture of a hard component (10% modulus is more than 2.3 but no more than 3.0) and a soft component (10% modulus is more than 0.0 but no more than 1.0) of a two-component polyurethane resin; and a topcoat layer formed from a mixture of a medium component (resin having a 10% modulus of more than 1.0 but no more than 2.3) and a soft component (resin having a 10% modulus of more than 0.0 but no more than 1.0) of a two-component polyurethane resin.
摘要:
A leather obtained by a (1) pre-treatment before tanning, (2) tanning process where glutaraldehyde is used as a tanning agent, (3) process where a re-tanning agent is used which is constituted by synthetic tannin, resin and aluminum, of which the synthetic tannin is constituted by (a) condensation product of aromatic sulfonic acid with formaldehyde or mixture of aromatic sulfonic acid and condensation product of aromatic sulfonic acid with formaldehyde, (b) methylene cyclic polymer of aromatic sulfonic acid with hydroxy aromatic compound or mixture of aromatic sulfonic acid and methylene cyclic polymer of aromatic sulfonic acid with hydroxy aromatic compound and (c) glyoxal, while the resin is constituted by (a) acrylic acid, methacrylic acid, acrylic acid ester or methacrylic acid ester polymer(s) and mixture thereof, and copolymer(s) thereof or mixture thereof and (b) polycondensation product of melamine with formaldehyde, wherein the re-tanning agent having the aforementioned composition is used to perform re-tanning, followed by dyeing as well as fatliquoring treatment using a fatliquoring agent constituted by (a) synthetic oil and natural oil and (b) mixture of synthetic oil and natural constituent, and (4) post-treatment after re-tanning; wherein said leather is characterized in that it is flexible and has unique elasticity and softness beyond what is presented by the material hide and has restorability that prevents the leather from stretching more than it should, and also in that its conditions include a BLC stiffness/softness of 4.42 mm or more but 4.90 mm or less and maximum set ratio of 10.7 or more but 13.9 or less.
摘要:
A leather is obtained by a process where a re-tanning agent is used which is constituted by synthetic tannin, resin and aluminum. The synthetic tannin is constituted by (a) condensation product of aromatic sulfonic acid with formaldehyde, (b) methylene cyclic polymer of aromatic sulfonic acid with hydroxy aromatic compound, and (c) glyoxal. The resin is constituted by (a) acrylic acid, methacrylic acid, acrylic acid ester or methacrylic acid ester polymer(s), and copolymer(s) thereof, and (b) polycondensation product of melamine with formaldehyde.
摘要:
A voltage conversion apparatus includes a booster circuit, a boost stop circuit, a Zener diode, and a capacitor. The boost stop circuit includes a transistor. When an overvoltage equal to or larger than a breakdown voltage of the Zener diode is output to an output line of the booster circuit, the Zener diode is turned on. Accordingly, the transistor is turned on and a switching element is turned off to stop a boost operation. Further, the capacitor is charged through the Zener diode. Even when the Zener diode is turned off due to a drop in the output voltage after the stop of the boost operation, the transistor maintains its on state for a certain time by discharge of the capacitor. Thus, the stop of the boost operation is continued.
摘要:
The present invention relates to an optical connector including, a ferrule within which an integrated optical fiber is fixed, a clamp portion disposed at a rear of the ferrule, the clamp portion comprising: a base component and a lid component facing the based component, where the base component and the lid component together are configured to clamp an end portion of the integrated optical fiber and an end portion of a naked optical fiber abutting the end portion of the integrated optical fiber, and a naked optical fiber guide portion disposed at a rear of the clamp portion, where the naked optical fiber guide portion comprises a through hole through which the naked optical fiber can be inserted, and that guides the naked optical fiber to the clamp portion by the through hole.
摘要:
A GT-cut crystal resonator that can be provided with a support portion having a small and simple configuration without adverse effect on vibration characteristics includes: a crystal plate formed in an elliptical shape with a major axis and a minor axis respectively corresponding to vibration directions of two longitudinal vibration modes orthogonal to each other in a GT-cut; and a support portion that supports the crystal plate, the support portion being connected to a position on an outer periphery of the crystal plate where a minimum vibration displacement is obtained when the two longitudinal vibration modes are coupled.
摘要:
A motor drive device including a battery 10; switching elements 15 and 16 which are connected in series with a condenser C2 having a voltage Vdc resulting from an increase action of battery voltage and which are operated in a chopper control; a reactor L2 whose one end is connected with a common connection point of the switching elements 15 and 16; and an inverter 19 for driving a PM motor 20 which is connected between another end of the reactor L2 and a negative-pole terminal of the battery 10. In such a motor drive device, an electrical power W is determined based on the voltage Vdc of positive-side point P of the condenser C2, a current Idc flowing in the reactor L2, and a switching duty d1 of the switching element 15 which satisfies a condition of 0≦d1≦1, i.e., is determined by calculating Vdc·d1·Idc.
摘要:
A conductive resin composition which includes an epoxy resin (A), a compound (B) having a (meth)acryloyl group and a glycidyl group, a phenolic resin curing agent (C), a radical polymerization initiator (D) and a conductive particle (E). The conductive resin composition which may be B-staged (semi-cured) at a relatively low temperature to exhibit sufficient tack-free properties and excellent pressure-sensitive tackiness. This permits temporary bonding of parts without involving solvent evaporation or light illumination, thereby reducing or avoiding an increase in facility costs. The conductive resin composition may thereafter be cured (C-staged) to provide a cured product having a desirable bond strength, while maintaining a low specific resistivity.
摘要:
According to one embodiment, an image processing method for inspecting an image includes creating synthetic image information in which information is synthesized with main image information in a visible state which the human eyes perceive in an invisible state which is hard to perceive with the human eyes, printing the synthetic image information onto a medium, acquiring an image printed on the medium as an inspection image information, extracting information embedded in the main image information from the inspection image acquired, and determining a fault in the image printed on the medium based on an extraction result of information.