Abstract: A UV absorbent represented by the following formula (1) [R1 represents an alkenyl group, all of R1 represent the same group, and R2, R3 and R4 independently represent a hydrogen atom, an alkyl group, an alkoxy group, or a halogen atom], a method of preparing the UV absorbent due to a reaction of a compound represented by the following formula (2) and an alkenylating agent represented by the following formula (3) in the presence of a base [R2, R3 and R4 independently represent a hydrogen atom, an alkyl group, an alkoxy group, or a halogen atom, and X represents a halogen atom, —OSO2R5 or —OSO2OR1, and R5represents an alkyl group or an aryl group], a composition containing therein the UV absorbent, and an image forming method using the composition:

Abstract: A UV absorbent represented by the following formula (1) [R1 represents an alkenyl group, all of R1 represent the same group, and R2, R3 and R4 independently represent a hydrogen atom, an alkyl group, an alkoxy group, or a halogen atom], a method of preparing the UV absorbent due to a reaction of a compound represented by the following formula (2) and an alkenylating agent represented by the following formula (3) in the presence of a base [R2, R3 and R4 independently represent a hydrogen atom, an alkyl group, an alkoxy group, or a halogen atom, and X represents a halogen atom, —OSO2R5 or —OSO2OR1, and R5represents an alkyl group or an aryl group], a composition containing therein the UV absorbent, and an image forming method using the composition: 1

Abstract: Provided is a radio receiver for selective calling that improves the efficiency of a battery saving function and that can reduce the possibility that an incorrect time will be displayed. According to the radio receiver for selective calling of the present invention, when a controller receives input time information from a reception section, it compares the time indicated by the time information and time indicated by a clock. When the two times match, for a subsequent specified period of time the controller does not turn on the reception section, even at the time of transmission of time information. When the times do not match, the clock is adjusted to reflect the time indicated by the time information.