Patent ID: 7771915

Claim:
A two-photon absorbing optical recording material comprising a two-photon absorbing compound and a recording component, in which a recorded area and an unrecorded area are formed by utilizing a two-photon absorption of the two-photon absorbing compound, and a reflectance or transmittance differs between the recorded area and the unrecorded area, wherein the recording component contains a dye precursor capable of becoming a color-forming material, the dye precursor containing at least a dye precursor of the following formula (32): A1-PD Formula (32) wherein A1 and PD are covalently bonded, A1 represents an organic compound moiety having a function of cutting the covalent bond with PD due to electron or energy transfer with the excited state of a two-photon absorbing compound, and PD represents an organic compound moiety capable of becoming a color-forming material when covalently bonded with A1 and becoming colored when released by the cutting of the covalent bond with A1, wherein the dye precursor of formula (32) is a compound represented by any one of the following formulae (33-1) to (33-6): in formulae (33-1) to (33-6), PD has the same meaning as in formula (32), R 71 , R 80 , and R 81 each independently represent a hydrogen atom or a substituent, R 72 , R 73 , R 78 , R 79 , R 82 and R 83 each represent a substituent, a71, a72, a74 and a75 each independently represent an integer of 0 to 5, a73 and a76 each independently represent 0 or 1, provided that when a71, a72, a74 and a75 each are 2 or more, multiple R 72 s, R 73 s, R 78 s or R 79 s may be the same or different and may combine with each other to form a ring, and each of the pairs R 80 and R 81 , and R 82 and R 83 may combine with each other to form a ring.