Two-photon absorbing optical recording material and two-photon absorbing optical recording and reproducing method
AssigneeFUJIFILM Corporation
InventorsMasaharu AKIBA, Takeharu Tani, Hiroo Takizawa, Yoshio Inagaki
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Abstract
A two-photon absorbing optical recording material comprising at least one two-photon absorbing compound and a recording component is provided. Recording is made on it by utilizing the two-photon absorption of the two-photon absorbing compound in the material, and then the material is irradiated with light to thereby detect the difference in the reflectance between the recorded area and the unrecorded area thereof, and the recorded information is thereby reproduced from the material, and also provided are a photosensitive polymer composition and a photon-mode recording method for the material.
Claims13
A photon-mode recording method of recording on a photon-mode recording material comprising 1) a sensitizing dye and 2) a recording component, the recording component including a dye precursor capable of becoming a color-forming material having an absorption shifted to a longer wavelength than in the original state, and the recording component having:
- an absorption in a wavelength range differing from that of the sensitizing dye;
- and the ability to record the refractivity difference or the absorbance difference caused by the electron transfer or the energy transfer from the sensitizing dye or the excited-state color-forming material,
- the photon-mode recording method comprising:
- a first step of forming the color-forming material as a latent image through irradiation with light;
- and a second step of self-sensitizing and self-amplifying the latent image to perform a recording as the refractivity difference or the absorbance difference, wherein the first and second steps are performed with a dry treating.
Dependencies are inferred from the claim text.