Patent Number: 7,100,829

Title: Card reader and transaction processing apparatus

Abstract: An ultrasonic wave sensor is mounted on a card reader. A detection range of the ultrasonic wave sensor covers a front surface of an inlet. The ultrasonic wave sensor detects presence or absence of a foreign body at the time of standby until a card is inserted into a card slot. When a processing of the card is terminated and the card is discharged, the ultrasonic wave sensor detects presence or absence of the card or presence or absence of a foreign body. In the case where the ultrasonic wave sensor cannot detect the card although the card has been discharged, an abnormality signal can be output.

Inventors: Okada; Masanobu (Kyoto, JP)

Assignee: Omron Corporation

International Classification: G06K 7/00 (20060101)

Expiration Date: 9/05/02018