摘要:
A treatment agent for animal fiber protection which comprises an aqueous solution containing divalent metal ions or a divalent metal salt. The treatment agent prevents hair and animal fiber damage associated with permanent wave treatments, bleaching treatments, etc.
摘要:
A planetarium moon projector of the direct casting type includes two alternatively interchangeable occulting elements which rotate at twice the period of moon phasing to intercept the projected light beam and effect the waxing and waning of the moon, and which are conically shaped with the same convergent angle as the projected convergent light and with an occulting relief angle. Two intermittent gears revolve integrally with the occulting elements and there is provided a fixed cylindrical rail with a rack, which keeps contact with the intermittent gears, and which interchanges the occulting elements when the intermittent gears are engaged with the rack. An eccentric drive coupling is provided to correct the dislocation of the moon phase caused by the occulting relief angle.
摘要:
A crosstalk correction coefficient of a multi component force detector provided in a rolling resistance testing machine is calibrated. A method of calibrating a multi component force detector provided in a rolling resistance testing machine including a spindle shaft to which a tire is attached, a running drum with a simulation road surface on which the tire is pressed, and a rotation torque meter provided in a rotation shaft of the running drum; in which, in performing a process of calculating a force acting on the tire from a measurement value of the multi component force detector by using a crosstalk correction coefficient that corrects an influence of crosstalk occurring in the multi component force detector, the crosstalk correction coefficient is calibrated by using a rolling test data including a rotation torque measured by the rotation torque meter and a force measured by the multi component force detector.
摘要:
A crosstalk correction coefficient of a multi component force detector provided in a rolling resistance testing machine is calibrated. A method of calibrating a multi component force detector provided in a rolling resistance testing machine including a spindle shaft to which a tire is attached, a running drum with a simulation road surface on which the tire is pressed, and a rotation torque meter provided in a rotation shaft of the running drum; in which, in performing a process of calculating a force acting on the tire from a measurement value of the multi component force detector by using a crosstalk correction coefficient that corrects an influence of crosstalk occurring in the multi component force detector, the crosstalk correction coefficient is calibrated by using a rolling test data including a rotation torque measured by the rotation torque meter and a force measured by the multi component force detector.
摘要:
A repair apparatus includes a heating head device configured to heat a soldering member, which is soldered to a circuit board. The heating head device includes a heating head and a contact member heated by the heating head. The contact member is formed of a material having a spring characteristic and a thermal conductivity higher than a thermal conductivity of the heating head. The contact member is configured to be brought into contact with a soldered surface of the soldering member with an elastic force so as to melt a solder joining the soldering member to the circuit board.
摘要:
An apparatus for mounting an electronic component includes a heating head that moves relative to the electronic component placed on a printed board, inclines according to the inclination of the electronic component, comes into contact with the electronic component, and heats a joining material that joins the printed board and the electronic component; a first sensor that measures the position and the inclination of the heating head; a second sensor that measures the position and the inclination of the printed board; and, a control unit that calculates the position and the inclination of the electronic component based on a measurement result of the first sensor in a state where the heating head is in contact with the electronic component, and determines the melted state of the joining material based on the measurement result of the second sensor and the position and the inclination of the electronic component.
摘要:
A signal processing circuit includes an auto gain control circuit and amplifies a signal with an amplification ratio determined based on a synchronous signal level having a positive potential with respect to a black level included in a high definition television video signal. In consequence, during the processing of the high definition television video signal, the signal processing is performed with a desired amplification ratio.
摘要:
A method and an apparatus for removing a micro component surely and leveling solder remaining on a substrate without imposing thermal damage to solder lands, the substrate and components on the periphery. A thermosetting adhesive (15) is provided on the surface (12a) of a micro component (12) opposite to the side of a substrate (11), and the distal end of a component holding pin (13) having cross-section area falling within the surface (12a) of the micro component (12) opposite to the side of the surface (11) is passed through the thermosetting adhesive (15) to abut against the surface (12a) of the micro component (12). Subsequently, solder (16) between the micro component (12) and the substrate (11) is heated to melt and the component holding pin (13) is moved in the direction receding from the substrate (11). Consequently, the micro component (12) is removed from the substrate (11).
摘要:
The present invention relates to a ball capturing apparatus and method of capturing one ball from plural balls having the same size, and to a solder ball disposing apparatus and method of disposing a solder ball containing solder in a predetermined position on a circuit board, thereby reliably capturing one ball from the plural balls having the same size. The apparatus includes: a holding member 111 including a holding wall 111a air-tightly closing a space S that holds a plurality of balls B having the same size and in which a hole 1111 larger than a size of one ball and smaller than a size of two balls is formed in an upper part of the holding wall; blowup means 112 for blowing the balls B held in the holding member 111 upward; and capturing means 12 for capturing a ball B blown up by the blowup means 112 and reached the hole.
摘要:
An apparatus and method for improving the underfill filling of a semiconductor chip element 100 which is ultrasonically bonded to and mounted on a circuit board. A semiconductor chip element 100 includes a silicon chip 101 and a group of stud bumps 117 formed on a bottom surface 101a of the chip 101. Signal stud bumps 113 are made of gold while power stud bumps 114, ground stud bumps 115 and dummy stud bumps 116 are all made of a gold-palladium alloy, which are harder than the signal stud bumps 113 and thus do not deform easily during ultrasonic treatment. Therefore, in a state in which the semiconductor chip element 100 is mounted, a gap of approximately 30 μm is maintained between the bottom surface 101a of the chip 100 and a top surface of the circuit board 120 on which the semiconductor chip element 100 is mounted.