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Optical recording method and media therefor
| Details |
Inventors: Sasagawa, Katsuyoshi; Nishihara, Kunio; Ozawa, Hiroshi; Imai, Masao;
Assignee: Mitsui Toatsu Chemicals, Incorporated (JP)
Primary Examiner: Louie; Won H.
Assistant Examiner:
Attorney, Agent or Firm: McGlew and Tuttle
An optical recording method which comprises providing a recording layer containing a recording susbstance that has an absorption maximum in the visible and near infrared wavelength region of 600 to 1,200 nm and loses or diminishes its power to absorb visible or near infrared radiation in the aforesaid wavelength region upon exposure to ultraviolet radiation, X-rays, an electron beam or an ion beam, and irradiating desired locations of the recording layer with ultraviolet radiation, X-rays, an electron beam or ion beam to form a pattern based on the presence or absence, or variation in strength, of the power to absorb visible or near infrared radiation in the aforesaid wavelength region so as to record information in the recording layer; a method for reading optically recorded information which comprises illuminating a pattern formed as described above with laser light having a wavelength in the aforesaid visible and near infrared region and detecting the presence or absence, or variation in intensity, of absorption of the laser light to read the recorded information; and optical recording media for use in the above-described optical recording method. |
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DETAILED DESCRIPTION It is an object of the present invention to provide an optical recording method for recording information at high density without forming physical signal pits involving many problems from the viewpoint of production technology.
It is another object of the present invention to provide a method for reading the recorded information by means of a visible or near infrared laser.
It is still another object of the present invention to provide optical recording media for use in the above-described optical recording method.
Other objects of the present invention will be apparent from the following description.
In the present invention, information is recorded and read by utilizing the functions of a special photosensitive layer, and not by forming signal pits through plastic molding.
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Quantum Computing 
