| 摘要 |
Sheet sensing apparatus comprises a shaft (9); two roller assemblies (20) mounted on the shaft (9) by means including a resilient portion (30), the roller assemblies contacting guide surfaces (27) provided by drive rollers (17). Sensing means (37,38) are provided within the shaft (9) for sensing deflection of the resilient portion (30) relatively to the shaft in response to the passage of one or more sheets (44) through the nips (24) between the roller assemblies (20) and the drive rollers (17). Monitoring means (not shown) connected to the sensing means monitors the sensed deflections of the resilient portion (30). |
