A card carrier including pairs of rollers disposed at predetermined spacings along a card conveyer passageway such that the respective pairs of rollers hold both sides of a card therebetween. A driver including a single motor, a power transmission including a plurality of timing pulleys and a plurality of timing belts for transmitting the drive force of the motor to all the rollers, and power interrupting means including a clutch mechanism disposed between the power transmission and the motor for transmitting the drive force of the motor to the power transmission when the motor arrives at a predetermined rated rotational speed and a brake mechanism for stopping the operation of the power transmission instantaneously. When the motor arrives at the rated rotational speed, the clutch mechanism is actuated to drive all the rollers. When the card is to be stopped at a predetermined position, the drive force of all the rollers is stopped instantaneously by the clutch mechanism and the brake mechanism.
A motor driver for drive-controlling a brushless motor being provided with a delay circuit that detects the motor pulse. When a stop signal is inputted, a transistor is activated, which in turn activates an electric brake to brake the brushless motor, while at the same time, the motor pulse detected by the motor driver is inputted to the delay circuit. After the stop signal is inputted, the motor pulse declines, which is detected by the delay circuit to activate the electromagnetic brake. The delay circuit is provided on the driver substrate for the motor driver.
A motor control method and apparatus for stopping an object moved by a motor accurately at a predefined target position, shortening the time period required in stop control, in which the motor is driven at a first (high) speed up to a distance from the target position adequate for stop control and then is sequentially braked to a predetermined speed lower than the first speed, driven at a second (low) speed up to a distance from the target position equal to the stopping distance, and braked to a stop. The method and apparatus are used in a time recorder. An impact printing apparatus is also disclosed with printing pin actuation timing correction dependent upon scanning speed or platen shape, striking duration timing dependent upon scanning rate, or printing pin actuation timing dependent upon stored shift amounts.
An impact printing apparatus is also disclosed with printing pin actuation timing correction dependent upon scanning speed or platen shape, striking duration timing dependent upon scanning rate, or printing pin actuation timing dependent upon stored shift amounts.
A card carrier part is inserted into a contact carrier part of a card reader together with a card to be read therein. The card carrier part is embodied such that it can be slipped onto an edge portion of the card, thereby clamping the edge in place. As a result, both the size of the card carrier part and the size of a card reader that uses such a card carrier part can be reduced to a minimum.
An IC card reader comprising an contact and a rotating member. The contact is for coming into contact with an IC contact terminal of a card. The rotating member is rotated by the insertion of the card. The rotating member starts to rotate as the card presses a portion of the rotating member, and the portion of the rotating member presses the card on a rear surface thereof when the rotating member rotates.
