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公开(公告)号：DE3662825D1
公开(公告)日：1989-05-18
申请号：DE3662825
申请日：1986-01-21
Applicant: IBM
Inventor： HILDEN MAGDALENA MARIA , LEE JIA-KUEN JERRY , WU ANTHONY WAI
Abstract: A thin film of carbon is sputter-deposited as a protective overcoat on the coating of a magnetic recording disk of the type in which the coating includes magnetic particles dispersed in an organic binder. The carbon film exhibits excellent durability and lubricity, thereby eliminating the need to incorporate alumina or other load-bearing particles into the magnetic coating, and eliminating the need for a liquid lubricant on the disk surface.
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公开(公告)号：DE3278826D1
公开(公告)日：1988-09-01
申请号：DE3278826
申请日：1982-12-10
Applicant: IBM
Inventor： GRANT BARBARA DIANNE , HILDEN MAGDALENA MARIA , JONES CAROL RUTH , SINCERBOX GLENN TAVERNIA
Abstract: A method for making high diffraction efficiency holograms from dichromated gelatin material including the steps of curing the material for a specified time under controlled temperature and humidity conditions, placing a dye spot on the cured material, measuring the extent of diffusion of the dye spot after a predetermined time, replacing the material into the curing conditions, repeating the method until dye spot diffusion of a predetermined size occurs, and using the material to make holograms.
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公开(公告)号：BR8600424A
公开(公告)日：1986-10-14
申请号：BR8600424
申请日：1986-02-03
Applicant: IBM
Inventor： HILDEN MAGDALENA MARIA , LEE JIA-KUEN JERRY
Abstract: A thin film of carbon is sputter-deposited as a protective overcoat on the coating of a magnetic recording disk of the type in which the coating includes magnetic particles dispersed in an organic binder. The carbon film exhibits excellent durability and lubricity, thereby eliminating the need to incorporate alumina or other load-bearing particles into the magnetic coating, and eliminating the need for a liquid lubricant on the disk surface.
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