| 摘要 |
PURPOSE:To stabilize a color image by incorporating a compound represented by a specified general formula or a precursor thereof into a photosensitive layer. CONSTITUTION:A compound represented by formula I or a precursor thereof is incorporated into a photosensitive layer. In the formula, R is a group represented by formula IV; R' is R, 1-20C optionally substituted alkyl, cycloalkyl or aryl; each of R1 and R2 is H or alkyl; R1 and R2 may bond to R3 to form a 5-10C ring; both of them are not H; R3 is optionally substituted aryl; and n is 1-4. For example, a compound represented by formula II or III is used as said compound represented by the formula I . Said precursor is a compound which releases hydroquinone by hydrolysis or other reaction.
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