Polycarbonate resin composition

A polycarbonate resin composition, comprising:

• a polycarbonate resin (A) containing a polycarbonate-polyorganosiloxane copolymer (A-1) having a polycarbonate block comprising a repeating unit represented by the general formula (I) and a polyorganosiloxane block comprising a repeating unit represented by the general formula (II);
• a copolymer (B) having constituent units derived from acrylonitrile and styrene, and being free of a constituent unit derived from methyl methacrylate;
• and
• a copolymer (C) having constituent units derived from butadiene and methyl methacrylate,
• wherein a content of the polyorganosiloxane block moiety in the entire resin composition is from 0.50 mass % to 10 mass %, and a content of the constituent unit derived from butadiene in the entire resin composition is from 3 mass % to 10 mass %:
• wherein R1 and R2 each independently represent a halogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkoxy group having 1 to 6 carbon atoms, X represents a single bond, an alkylene group having 1 to 8 carbon atoms, an alkylidene group having 2 to 8 carbon atoms, a cycloalkylene group having 5 to 15 carbon atoms, a cycloalkylidene group having 5 to 15 carbon atoms, a fluorenediyl group, an arylalkylene group having 7 to 15 carbon atoms, an arylalkylidene group having 7 to 15 carbon atoms, —S—, —SO—, —SO2—, —O—, or —CO—, R3 and R4 each independently represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms, a and b each independently represent an integer of from 0 to 4, and n represents an average number of repetitions.