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:
May. 25, 2004
Filed:
Dec. 28, 2000
Katsutaro Ichihara, Yokohama, JP;
Junichi Akiyama, Kawasaki, JP;
Akira Kikitsu, Yokohama, JP;
Tsutomu Tanaka, Oume, JP;
Kuniyoshi Tanaka, Miura, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
Electrons are directed from an electron emitter towards a magnetic recording medium to heat a recording portion of the magnetic recording medium and magnetic information is written by a magnetic recording head to the temperature-elevated recording portion. Otherwise, a magnetic head having a magnetic pole is used and the magnetic pole serves as an electron emitter as well. Alternatively, a space between the electron emitter and recording medium is made shorter smaller the mean free path of electrons in the atmosphere to considerably improve the recording density.