Form reading device and form detecting method

Abstract

A form reading device (1) is provided with a camera (3) for capturing an image of an information-recorded surface of a passport (P) wherein information readable using a predetermined wavelength for reading is recorded, an illumination part (4) for performing illumination of the wavelength for reading toward the information-recorded surface, an LED (8) for performing light emission for detection of the passport (P) from the rear side of the information-recorded surface using another wavelength for detection which is different from the wavelength for reading, and a control part (9) for controlling the form detection by the camera (3) and the light emitted from the LED (8). The form reading device (1) detects mounting of the passport (P) from the luminance level of light emitted from the LED (8) for detection when the image is captured. Light emitted from the LED (8) for detection is controlled to be turned off after the detection of the form is completed. Therefore, the form reading device allowing the detection of the passport by simple configuration is provided.

Description

technical field [0001] The present invention relates to a form reading device (Form reading device) having a function of detecting that a form is placed. Background technique [0002] Conventionally, document reading devices for reading forms such as passports are known. For example, document reading devices that read passports are used for immigration inspection at airports and the like. Such a slip reading device has a function of detecting that a reading object (passport) is placed. [0003] Conventionally, a method using a detection sensor is known as a technique for detecting whether or not a reading object is placed. This method is for example disclosed in Japanese Patent Application Publication No. 2001-16406 (page 5 figure 1 ) published in . In the conventional method, it is detected whether an object to be read (an original document) is manually placed on an original table by inputting data from two optical sensors (first and second optical sensors). [0004] H...

AI Technical Summary

Problems solved by technology

[0004] However, in the existing method, in order to detect the form, it is necessary to install a special sensor (detection sensor), and the device structure is complicated.

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