摘要:
A cartridge (30) for an electrophotographic machine is disclosed having a sump (33) for carrying an agitator (34) rotatably mounted in the sump (33) for engagement with toner (35). An encoded device (31) is coupled to a first end of the agitator (34). A torque sensitive coupling is connected to a second end of the agitator (34) which is connectable to a drive mechanism of the machine. The encoded device (31) includes coding means representing cartridge characteristic information. The coding means may be a plurality of cam surfaces or a plurality of reflective surfaces. Alternatively, the coding means may be a plurality of openings in the encoded plate which are detected by the use of a magnetic field sensor and a magnet.
摘要:
Torsion springs (1) are graded by both winding and unwinding them in a test fixture (20) having a central arbor (52a) and ledges (54, 58) functionally corresponding to the use of the springs. This takes hysteresis into account. Data obtained at a known location is approximated as separate straight lines for winding and unwinding. The rotation at the predetermined base or preload torque is determined from the straight lines, and the two values are averaged. To this average value a large predetermined amount (70 degrees) of rotation is added, the torque at that value of rotation is determined from the straight lines, and the two values are averaged. The spring is graded as acceptable when that average torque is within a predetermined range.
摘要:
Torsion springs (1) are graded by both winding and unwinding them in a test fixture (20) having a central arbor (52a) and ledges (54, 58) functionally corresponding to the use of the springs. This takes hysteresis into account. Data obtained at a known location is approximated as separate straight lines for winding and unwinding. The rotation at the predetermined base or preload torque is determined from the straight lines, and the two values are averaged. To this average value a large predetermined amount (70 degrees) of rotation is added, the torque at that value of rotation is determined from the straight lines, and the two values are averaged. The spring is graded as acceptable when that average torque is within a predetermined range.