| abstract |
An ink reservoir capable of retaining ink includes a case having a polypropylene, and a fibrous absorber (2) contained in the case, the fibrous absorber having an aggregate of fiber with a double-layer structure including a core (4) and a sheath (5), the sheath being fused at intersections of fiber loops. The core has a polypropylene homopolymer having a melting point of 140°C or more, and the sheath has an ethylene-propylene random copolymer having a melting point of less than 140°C and a melt mass-flow rate of 7 g/10 min or more as measured at 230°C and a load of 2.16 kg according to JIS K 7210. |