OPTICAL DATA STORAGE AND RECORDING MEDIUM HAVING A REPLACEABLE PROTECTIVE COVERPLATE

摘要

A protective removable coverplate for a reflective optical data storage and recording medium wherein a transparent coverplate is removably disposed over a transparent coating which is in intimate contact with the reflective medium. A slightly bumpy upper surface of the coating supports the coverplate with air gaps existing between the coating and the coverplate to a maximum depth of one micron under hand pressure on the coverplate.