发明名称 |
Method for copying optical information |
摘要 |
Methods for copying optical information are disclosed. The methods comprise the steps of disposing a master mask with a tracking signal or other information recorded therein over an optical memory material comprised of heat mode recording material which can be thermally altered in order to deform or remove the material upon the application of an energy beam, permitting recording on the altered recording material and irradiating the master disk with flash light for a period of 1 microsecond or less, or in the alternative, scanning with a laser beam focused to a spot having a diameter of at least 10 mu m on the master mask with the exposure time at each area of the optical memory material being preferably 1 microsecond or less. |
申请公布号 |
US4529991(A) |
申请公布日期 |
1985.07.16 |
申请号 |
US19820380318 |
申请日期 |
1982.05.20 |
申请人 |
FUJI PHOTO FILM CO., LTD. |
发明人 |
WADA, MINORU;TAKAHASHI, YONOSUKE;HASEGAWA, EIICHI |
分类号 |
B41M5/24;G03C1/705;G11B7/243;G11B7/257;G11B7/26;(IPC1-7):G01D15/34 |
主分类号 |
B41M5/24 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|