TAPE TENSION CHECKING DEVICE FOR CASSETTE RECORDERS

摘要

This invention relates to a tape tension checking device for cassette type tape recorders. The torques to be measured are simulated by limiting-force clutches which are accommodated in a tape cassette (cartridge). From either the rotation of the simulated tape spools, or the standstill thereof it can be immediately determined whether there exists the necessary tape tension or torque respectively.