| 摘要 |
PURPOSE:To obtain detection accuracy of a reading range despite simplified constitution by designating the reading position of sheet paper by sensing light deflection quantity of a deflection means deflection processing the light. CONSTITUTION:A mail A is set at a corner K of the reference position of a reference surface block 22. The light a lamp 11 is irradiated through an aperture 12 of a mask 13 on a first deflector 14 to be reflected. The reflected light is irradiated on a second deflector 18 to be thereby reflected and irradiated on the mail A. From this state, operating knobs 16, 20 are turned and the light is scanned in (x) and (y) directions to target the light spot on the viewing range S. The rotational angle of the deflectors 14, 18 are detected by detectors 17, 21, the output signals are sent to the control parts, and the viewing range of the zip code is designated for a zip code automatic reading and classifying machine. By this device, excellent detection accuracy is obtained that is not afffected by the operator's eye position.
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