The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 30, 1996
Filed:
Oct. 18, 1994
Masamichi Fujihira, Sakae-ku, Yokohama-shi, Kanagawa, JP;
Hiroshi Muramatsu, Chiba, JP;
Norio Chiba, Chiba, JP;
Tatsuaki Ataka, Chiba, JP;
Seiko Instruments Inc., , JP;
Other;
Abstract
There is provided an optical memory medium comprising a flat plate modified on the surface thereof by a photolytic residual group, an optical recording apparatus comprising an optical probe having a microscopic aperture on the leading end thereof, a light source, X-Y-Z position control means, and a controller for controlling the apparatus as whole and an apparatus for reading the optical memory medium comprising the optical memory medium, a friction detecting probe, an X-Y-Z position control means and a controller for controlling the apparatus as a whole. Further, information is written and read with high density less than the wavelength of light using an apparatus for writing to and reading from an optical memory piezoelectric medium comprising the optical memory piezoelectric medium constituted by a piezoelectric element modified on the surface thereof by a photolytic residual group, an optical probe having a microscopic aperture on the leading end thereof, a light source, an X-Y-Z position control means, a means for measuring the resonance characteristics of the piezoelectric element and a controller for controlling the apparatus as a whole.