摘要:
A component mounting apparatus includes a board transfer section for carrying in circuit boards to a component mounting position and carrying out the circuit board after component-mounting operation. A component feed section is provided for feeding, to a specified position, a component to be mounted onto the circuit board, and a component mounting section is provided for loading a suction nozzle matching the component to be mounted, sucking up the component from the component feed section and moving the component to the mounting position, and mounting the component on a specified site of the circuit board. A controller is provided for controlling operations of the individual sections is order to execute a productional operation of component-mounting onto the circuit boards. Also, a remaining-component discarding device performs an operation of discarding a component which remains at the suction nozzle during a time period following the component-mounting operation while the component mounting section is kept halted.
摘要:
A magnetic recording medium having pits corresponding to servo signals and grooves extending along recording tracks, in which a magnetic head undergoes only little variations in its floating amount during recording/reproduction. The ratio Lw/Gw, where Lw is the width of a land 4 as a protuberant portion between neighboring grooves 3 and Gw is the width of the groove 3, is set so as to be not less than 2.0.
摘要:
A magnetic disk yields an excellent off-track characteristics and a high coercive force if a track density is increased. The magnetic disk includes a non-magnetic plate on which data such as a servo signal is formed by convexo-concave patterns and an metallic magnetic film formed on the non-magnetic plate. The metallic magnetic film has a thickness of 50 nm or lower. Between the non-magnetic plate and the metallic magnetic film is formed a primary coat composed of a first and a second coats. The first coat is made of any one of C, Si and Ge and the second coat is made of Cr as a main component. The first coat has a thickness of 2 to 80 nm. The second coat has a thickness of 5 to 108 nm.
摘要:
Disclosed is a process for producing a masterbatch, comprising a step of melt-kneading an ionomer that an ethylene-unsaturated carboxylic acid copolymer is partially neutralized with potassium and a hydrophobic polymer comprised of a hydrocarbon compound, and a step of drying the melt-kneaded mixture at a temperature of not less than the Vicat softening point of the ionomer after the melt-kneading.
摘要:
An optical disc manufacturing method includes: an injection step of injecting a liquid material into a circular plate-shaped injection space having a center hole portion at a center from an injection hole connected to an inner edge portion in the injection space; a discharge step of discharging air and the liquid material from a discharge hole formed on a straight line passing through the injection hole and a center of the center hole portion in a plane direction of the circular plate and at a position opposite to the injection hole; a curing step of curing the liquid material injected into the injection space; and a takeout step of taking out the cured liquid material from the injection space.
摘要:
An optical information recording medium includes a recording layer that absorbs recording light in accordance with its wavelength, the recording light being condensed for information recording, and increases the temperature in the vicinity of a focus so as to form a recording mark and that has properties of increasing a light absorption amount with respect to the wavelength of the recording light by heating performed at a temperature of 120° C. or more.
摘要:
The present invention provides a device and a method for determining whether or not a component holder is good, which enable detecting component holders that are to affect correct component recognition and further enable preventing interferences between constituent devices, a component mounting apparatus with the determining device, and a component mounting method. The determining device has an illuminating device, a CCD camera and a controller to determine whether or not a suction nozzle is good based on luminance at a component hold face of the suction nozzle. The suction nozzle having light reflectance of the component hold face increased to a level whereat a correct recognition of an electronic component held by the suction nozzle is affected, can be detected accordingly. An interference preventing device is also provided, so that interference between the CCD camera and the suction nozzle can be prevented.
摘要:
A sales promotion system of merchandise utilizing an Internet site, includes information providing unit for sending predetermined information to an information terminal device of a user via the Internet site. And the sales promotion system of merchandise further includes unit for calculating a cumulative total of charges or point values converted from charges paid in a predetermined period in exchange for information provided by the information providing unit, so that the cumulative total is used for deciding a rebate amount rebated to the user when the user purchases a specific item of merchandise.
摘要:
A cassette control device by which high-speed processing can be expected even by using an arithmetical unit with current processing capability, even when the number of cassettes increases simultaneously with an increase in the number of nozzles which can suck electronic parts. There is provided storage unit (18) having storage regions in which programs for respective operation patterns of the cassettes (3-1 to 3-M) are set for each of the nozzles. An arithmetic unit (19) extracts a specific program required for driving in a specific operation pattern based on a command (17) inputted according to the content of packaging, from a specific region which is provided in the storage unit (18) to correspond to a specific nozzle to be used, and the arithmetic unit (19) operates the specific cassette using the specific program.
摘要:
An apparatus and a method for mounting electronic components are provided which shorten a cycle time required for mounting and enable a component mounting machine to be arranged in a small area. There is provided a controller, so that a retreat control for a second electronic component is performed to a second component feeder so as to avoid an interference if a first electronic component or a component holder interferes with the second electronic component of the second component feeder because of movement of a mounting head. The time conventionally required for moving up and down a component holder can be reduced, and moreover the need of uselessly moving along a detour at a time of moving the mounting head is eliminated. The cycle time can be shortened, and eventually costs can be reduced.