Plastic and nonmetallic article shaping or treating: processes – Forming sound grooves in records – Die pressing disk type records
Patent
1982-04-09
1985-10-22
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
Forming sound grooves in records
Die pressing disk type records
156267, 156530, 26432811, 425145, 425467, 425577, B29D 1700
Patent
active
045487774
ABSTRACT:
Information storage mediums such as video discs and digital audio discs are fabricated by extruding a mass of electrically conductive synthetic resin into a block assembly composed of a pair of separable blocks in which the mass is molded into a cake that is then carried by one of the blocks as separated into a press in which the cake is pressed into an information storage medium or disc blank. The blank is transferred into a trimmer for trimming an overflow off the disc blank as an annular scrap, which is in turn chopped by a chopper into pieces for reuse. A disc from which the scrap has been removed is fed to a hot stamping machine in which an identification foil piece is attached with heat to the disc. The disc with the foil piece stamped thereon is punched to form a central hole by a punching machine. A predetermined number of such finished discs are stacked on a pallet in a stacker, with partition plates alternating with groups of such piled discs, and the pallet loaded with the discs is discharged from the stacker.
REFERENCES:
patent: 1560368 (1925-11-01), Bartels et al.
patent: 3186029 (1965-06-01), Joseph
patent: 3412427 (1968-11-01), Flusfeder et al.
patent: 3543331 (1970-12-01), Rand et al.
patent: 3662051 (1972-05-01), Harlow et al.
patent: 3889563 (1975-06-01), Westermann
patent: 3937779 (1976-02-01), Simmons
patent: 4005965 (1977-02-01), Roczynski et al.
patent: 4034033 (1977-07-01), Carrere
patent: 4064674 (1977-12-01), Palmer
patent: 4243456 (1981-01-01), Cesano
patent: 4281816 (1981-08-01), Carroll et al.
patent: 4327047 (1982-04-01), McNeely
patent: 4380484 (1983-04-01), Repik et al.
Fukuda Tomeichiro
Furukawa Ikuo
Hayashi Takushi
Kumata Fujio
Nagano Susumu
Heitbrink Timothy W.
Victor Company of Japan , Limited
Woo Jay H.
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