Abstract: An inner-rotor brushless motor includes a holding member configured to hold a stator core. The holding member includes a mounting surface disposed perpendicular to a shaft and brought into contact with a mating member in which the inner-rotor brushless motor is installed; bent portions integrated with the mounting surface, bent upward so as to be substantially perpendicular to the mounting surface, and configured to hold the outer circumferential surface of the stator core; and mounting flanges used for fastening the motor to the mating member. The mounting surface, the bent portions, and the mounting flanges are integrated with each other.

Abstract: A recording medium determination apparatus that determines grammage of a recording medium by using an ultrasonic wave includes a transmission unit configured to output an ultrasonic wave having a predetermined frequency, a reception unit configured to receive the ultrasonic wave output from the transmission unit and transmitted through the recording medium and output a received signal, a calculation unit configured to calculate a signal having a peak component according to a cycle of the received signal, and a determination unit configured to determine the grammage of the recording medium based on the signal calculated by the calculation unit.

Abstract: A sheet formed by using as a main component an aliphatic polyester having a melt viscosity of 1.0.times.10.sup.3 -1.0.times.10.sup.6 poises at a temperature of 190.degree. C. and a shear rate of 100 sec.sup.-1, and having a melting point of 70.degree.-190.degree. C. The sheet of the present invention is biodegraded when buried in soil and is excellent in mechanical properties and transparency. The sheet is also superior in non-absorbency of aroma as well as heat-sealability and formability.