| 摘要 |
A carrier apparatus is provided with a first carrier mechanism (60), a second carrier mechanism (61), and a sensor (57, 70, 80). The first carrier mechanism (60) has a holding portion (34) holding a substrate, a driving pulley (52), an idler pulley (51), and a first endless belt (50), the first endless belt (50) being provided between the driving pulley (52) and the idler pulley (52) and the holding portion (34) being attached to the first endless belt (50). The second carrier mechanism (61) has a driving source (54) with a rotation output shaft (55), a speed reducing pulley fixed on the driving pulley (52) and more than one second endless belts (56), the above more than one second endless belts (56) being provided between the rotation output shaft (55) and the speed reducing pulley (53). A sensor detects the state of the second endless belt (56), for example, the occurrence of cutting. As a result, even if the state of a carrier belt deteriorates, the holding portion (34) is prevented from falling. <IMAGE> |
