|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||264/133 ; 264/16 ; 425/810|
|우선권정보||JP-0330383 (1989-12-19); JP-0052807 (1990-03-06); JP-0052808 (1990-03-06); JP-0062668 (1990-03-15); JP-0087540 (1990-04-03); JP-0087541 (1990-04-03)|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 18 인용 특허 : 0|
The present invention provides a process using a roll stamper which molds a substrate sheet for information recording mediums by continuously transferring preformat patterns on a resin sheet. The roll stamper has the feature that the preformat pattern on the roll stamper has a value of b/a of greater than 1 when the length of the preformat pattern in the direction parallel to the direction in which the resin sheet is transported is defined as a and the length in the direction perpendicular thereto as b.
A process for producing a substrate sheet for an information recording medium, having a preformat pattern with a length A and a width B, which comprise the steps of: melt-extruding a resin sheet; and passing the extruded resin sheet between a roll stamper, having on its periphery a pattern to be transferred corresponding to the preformat pattern, and a roll disposed opposite to the roll stamper, to transfer the pattern to be transferred to the extruded resin sheet, wherein the pattern to be transferred has a length a corresponding to the length A in the ...