To provide a cartridge and a toner container each of which does not increase a material cost and is excellent in impact resistance against, for example, a vibration or a fall, the impact resistance being a needed function. The cartridge and the toner container each include a first part molded out of a laser light absorptive styrene resin composition and a second part molded out of a laser light transmissive styrene resin composition, the first part and the second part being joined with each other by laser welding. In each of the cartridge and the toner container, the transmittance of each of the parts is adjusted depending on, for example, the particle size and amount of rubber in each of the styrene resin compositions, or the kind of a flame retardant in each of the compositions.