摘要:
A diisopropylnaphthalene mixture containing 50% or more of 2,7-isomer is substantially odorless, has a low viscosity and exhibits a high dissolving power particularly for an electron-donating color former including a black color former. By coating of micro-capsules of an ink comprising the solvent and a color former on a substrate, a carbonless copying paper which is odorless and excellent in color developing speed including that at lower temperatures, can be obtained.
摘要:
Disclosed herein is a pressure-sensitive recording material including such a sheet excellent in the durability and definition of the recorded images transcribed on another sheet, which is produced by the process comprising the step of applying the microcapsules encapsulating minute particles of a pigment dispersed in a solution of an adhesive and optionally, an oil-soluble colored dyestuff dissolved in the solvent onto a supporting material such as sheet, and a process for producing the same.
摘要:
A rotary cutter which includes an elongated handle having an aperture extending through its one end, a shaft extending through the aperture so as to be supported by the handle, a disc blade rotatably mounted on the shaft and lying in a plane perpendicular to the longitudinal axis of the shaft, and a member engageable with the shaft, with a bearing projection formed on the handle coaxially with the aperture.
摘要:
A microcapsule enclosing a color-former solution for a pressure-sensitive recording paper is prepared by a process in which a water-soluble cationic urea resin and at least one of prepolymer selected from the group consisting of melamine-formaldehyde prepolymer, urea-formaldehyde prepolymer and melamine-urea-formaldehyde prepolymer are polycondensed on the surface of a dispersed solvent droplet containing a color-former in the presence of an anionic surfactant, while causing complex-coacervation between the water-soluble cationic urea resin and the anionic surfactant.
摘要:
Two intermediate potentials of small current driving capacity are generated using load elements and MOS transistors, and are respectively supplied to the gates of two MOS transistors which are series-connected between power sources and have large current driving capacity, thus obtaining an intermediate potential from a node between the MOS transistors. The MOS transistors at the output stage are complementarily operated so as not to be turned on at the same time.
摘要:
Disclosed herein a process for producing a microcapsule having an excellent solvent-resistance and a thermal stability, and an extremely minute amount of unreacted formaldehyde, comprising the steps of dispersing a substance to be encapsulated into an aqueous solution containing a water-soluble cationic urea resin, at least one prepolymer selected from the group consisting of a melamine-formaldehyde prepolymer, a urea-formaldehyde prepolymer and a melamine-urea-formaldehyde prepolymer and an anionic surfactant and then, adding an acid-catalyst into the thus obtained aqueous dispersion thereby forming a wall membrane which encapsulates the dispersed microparticle of the substance to be encapsulated by polycondensing the prepolymer and the cationic urea resin followed by cross-linking while causing complex coacervation, and adding a monosaccharide into the aqueous dispersion while adjusting the pH of the aqueous dispersion with the addition of a hydroxide of an alkaline earth metal thereby removing the unreacted residual formaldehyde remaining in the aqueous dispersion.
摘要:
An electromagnetic cortical stimulation array structured to stimulate cortical regions during a presurgical localization of eloquent areas. The device includes array of miniature elongated magnetic coils (optionally overlaid on an array of electrodes) oriented substantially parallel to one another and structured to be inserted under the dura during an open cranial neurosurgery. Each coil and electrode is activated (optionally, selectively) to subdurally stimulate different regions of the cortex to determine functions of each cortical area.
摘要:
A indexable insert (1) of the present invention has a structure including at least a rake face (2) and a bearing surface (5), the indexable insert (1) including a substrate and a coating layer disposed on the substrate, wherein the coating layer includes one or more layers, and at least one layer of the one or more layers covers the entire surface of the substrate and satisfies the relationship F1
摘要:
The invention relates to a motorcycle engine arrangement which transmits a starting power to a crank shaft from a starter motor via a power transmission mechanism and a one-way clutch. The one-way clutch is installed at one end portion of the crank shaft, and a starter gear or a starter sprocket having a diameter smaller than an outer diameter of a clutch outer member is provided on the crank shaft portion further toward an outer side in an axial length direction of the crank shaft than the clutch outer member of the one-way clutch. Preferably, the clutch outer member is arranged further toward an outer side in the axial length direction of the crank shaft than a sprocket wheel for driving a cam or a gear for driving a cam provided at one end portion of the crank shaft.
摘要:
A multiple disc friction clutch comprises a clutch outer for take in power, a clutch hub for take out power, friction plates, a clutch spring pressing a pressing member to the friction plates for connecting the clutch, a spring receiving member supporting the clutch spring, and a coupling hub coupled to the spring receiving member as to be integrally movable. A spline inclined against an output axis is formed in a fitting portion between the coupling hub and a tube shaft, and moves the clutch spring in an axial direction of the tube shaft to a compressing side while relatively rotating the coupling hub against the tube shaft, in the case that an engine drive torque is equal to or more than a predetermined value, thereby increasing a pressing load.