1, the feed stepper motor such as using the stepper motor sport carrying type conveying mechanism of the matrix, the location of the vertical and horizontal direction text distance decision stepper motor step Angle error is smaller, the dynamic torque. Type of wheel type number to match the resolution of stepping motor, will need to type to the type of hammer position location quickly after typing, the requirement of the stepper motor high speed position location, and requires high positioning accuracy and damping characteristics. Damping characteristics make type movable type not disorderly, progressive type of quality. Consider moving velocity, load factors, such as size, price, life typewriter general use stepper motor or dc motor. To reduce the action time, stepper motor rolling instruction makes typing choose not to exceed 180 °. The action of the stepper motor for frequent reciprocating motion. 。 Stepper motor can use HB type or low capital type PM stepping motor. The typewriter paper in addition to the large typewriter, type PM stepping motor for almost all the choice of the typewriter. Stepper motor used in typewriters, the basic function of action using a separate electric thought structure, so can reduce the load inertia, simplified function, progress printing precision, reliable type, freedom, functions, etc. The characteristics of the dc motor for high response capability, easy control and high efficiency. The overall processing speed of the typewriter, decided the feeding movement time, because of the least of the agency for the typewriter, so the characteristics of type PM stepping motor and low capital used in the agency. Measurements of control circuit of stepping motor is characterized by low and high life. 2, mobile type with stepper motor use inkjet printer more now, this kind of type typewriter yield decline, the use of VR motor or HB stepping motor. Computer peripherals ultimate computer files into printed words, Numbers, and graphics output, use a typewriter in the past. 3, type selection mechanism with step motor type printers including paper transfer mechanism and the blank space with two motors, and according to the typing method USES dot matrix type selection. the main products: stepper motor, brushless motor, servo motor, stepping motor drive, brake motor, linear motor and other kinds of models of the stepper motor, welcome to inquire. Telephone: