Abstract:
An epoxy resin composition comprising (A) a naphthalene type epoxy resin in which 35-85 parts by weight of 1,1-bis(2-glycidyloxy-1-naphthyl)alkane and 1-35 parts by weight of 1,1-bis(2,7-diglycidyloxy-1-naphthyl)alkane are included per 100 parts by weight of the resin, (B) a phenolic resin curing agent, (C) a copolymer obtained through addition reaction of alkenyl groups on an alkenyl-containing epoxy compound and SiH groups on an organohydrogenpolysiloxane of 20 to 50 silicon atoms, and (D) an inorganic filler is best suited for semiconductor encapsulation because the cured composition has good thermal cycling, anti-warping, reflow resistance, and moisture-proof reliability.
Abstract:
An epoxy resin composition comprising (A) a polyfunctional epoxy resin, (B) a phenolic resin, (C) an inorganic filler, and (D) curing catalyst-containing microcapsules having a mean particle size of 0.5-50 &mgr;m is suited for semiconductor package encapsulation since it minimizes the warpage of packages and has satisfactory catalyst latency, storage stability and cure.
Abstract:
Process for the protection of a building that has already been built or is going to be built, whereby an effective amount of an insecticidally active compound is spread around or under the said building at discrete locations. The insecticide may be an arylpyrazole.
Abstract:
A sheet heating device for heating a developer sheet to fix an output image formed thereon. The sheet heating device includes a guide plate and a cover member to define an internal space therebetween. Within the space, a heater and a fan is provided. The fan generate circulating hot air stream which is directed in a traveling direction of the developer sheet. The hot air has a transversal width substantially the same as a transverse length of the developer sheet.
Abstract:
A method and apparatus for detecting a track and focus errors in an optical head comprises a step of dividing light beam which is reflected from a recording medium into at least a first, second, and third light beams belonging to first, second and third cross sectional regions thereof, and means therefor. The first region is expressed in its cross sectional position by the equations, ##EQU1## the second region is expressed in its cross sectional position by the equations, ##EQU2## the third region is excluded from said first and second regions and expressed in its cross sectional position by the equations, ##EQU3## where P is a pitch of pits or pregrooves of the recording medium, .lambda. is a wavelength of the light beam, .delta. is a value which is from equal to or more than zero to equal to or less than a maximum moving distance of the object lens in a direction of a track error, d is a diameter of the light beam which is reflected, X is an axis which is parallel to a track error direction to intersect the light axis of said light beam which is reflected, and Y is an axis which is orthogonal to the X to intersect said light axis. The track error is detected in accordance with the light beams of the first and second regions, and the focus error is detected in accordance with the light beam of the third region.
Abstract:
A tag label producing apparatus has a cartridge holder for setting a first roll configured by winding a base tape equipped with identification marks, which include marks formed by two black strips and arranged with a pitch 2Pp and marks formed by one black strip and arranged with the pitch 2Pp, at a plurality of portions, a feeding roller driving shaft that feeds the base tape supplied from the first roll attached to the cartridge holder a print head that makes a predetermined print on the base tape or a cover film to be bonded thereto, and a mark sensor that detects the identification mark on the base tape, and controls the feeding roller driving shaft and the print head in coordination with each other in accordance with the detection result of the identification mark by the mark sensor.
Abstract:
A light radiated from a light source is focused on an optical disc by a focusing lens. A light reflected from the optical disc is introduced to a signal detection system. In the signal detection system, the introduced light is diffracted by a birefringent diffraction grating element utilizing an optical crystal. The diffracted light is received by a photodetector. Consequently, focus and track errors are detected, and information stored in the optical disc is re-produced.
Abstract:
A support roller disposed on a side of a case main body of a facsimile apparatus is supported by a pair of right and left end holding members with associated coil springs for urging the support roller upward in an elevatable and oscillatable manner. A nose portion of a curl eliminating plate fixed to the lower surface of an upper cover member, which may be opened and closed, is disposed close to the circumferential surface of the support roller when the upper cover member is closed. When the upper cover member is closed, the support roller is inhibited from moving in either direction with respect to a feed path by restricting members projected downward from the upper cover member. The combination of the support roller and the nose portion of a curl eliminating plate define an S-shaped path through which the paper is fed to eliminate curl.
Abstract:
A thermal fixing unit provided with gas purification means for use in an image recording medium. The gas purification means traps gaseous component released from a developer sheet upon heating thereof. The purification means includes a duct body disposed to surround a main frame of the thermal fixing unit, a support body having one end connected to the duct body, a fluid passage being defined between the main frame and the duct body, and the fluid passage being connected between the one end of the support body and sheet inlet and sheet outlet of the thermal fixing unit, the gas venting fan rotatably provided at the support body for sucking fluid in the main frame through the sheet inlet, the sheet outlet and the fluid passage, and a filter member disposed in the support body for trapping the gaseous component released from the developer sheet.
Abstract:
A color copying machine has a sheet heating device for heating a color developer sheet while the sheet is being fed. The sheet heating device includes a sheet feed path along which the sheet is fed, a heater unit spaced from the sheet feed path, and a sheet protective member of an insulating material disposed between the sheet feed path and the heater unit. The sheet protective member has a plurality of holes defined therein for passing radiant heat from the heater unit toward the sheet feed path. The sheet protective member may comprise a mesh screen of intersecting filaments or a punched iron sheet.