| 摘要 |
PROBLEM TO BE SOLVED: To provide a brush in which particles are appropriately heat-fusion bonded to bristles made of synthetic fiber by preventing adjacent bristles from heat-fusion bonding together, and also to provide a method for manufacturing the brush, a cleaning system, a chemical substance treatment system, and an electrophotographic device.SOLUTION: The bristles 12 are composed of polyester or the like and provided with a core-sheath structure having a core part 12a and a sheath part 12b, wherein the melting point of the core part 12a is higher than that of the sheath part 12b. The bristles 12 are heated at a temperature higher than the melting point of the sheath part 12b and lower than that of the core part 12a. As a result, at least to a part of the sheath part 12b, particles 13 whose average maximum diameter is ≤40% of the fiber diameter of the bristles 12 are heat-fusion bonded so as to be at least partly exposed. The bristles 12 in the number at least ≥70% of the total number of bristles 12 are each covered with the heat-fusion bonded particles 13 in the area at least ≥50% of the surface area per piece of bristles 12. |
