| 摘要 |
A scanning module including a light source to project light onto a document to be read, a lens unit to focus an optical signal read from the document being illuminated by the projected light, a plurality of mirrors to form an optical path from the light source to the lens unit, an image sensor to convert the optical signal focused by the lens unit into an electrical signal, a frame to house the light source, the lens unit, the mirrors, and the image sensor, and a fan to circulate air inside the frame.
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