| 摘要 |
A scanner has a movable carriage, a contact image sensor located on the carriage, and a platen that is substantially transparent to visible light overlying the carriage and the contact image sensor. The scanner is selectively configurable between a first scanning mode for scanning substantially opaque media positioned on the platen and a second scanning mode for scanning media substantially transparent to visible light underlying the platen. At least one image on the substantially opaque media is located within a depth of field of the contact image sensor when the substantially opaque media is positioned on the platen. At least one image on the media substantially transparent to visible light is located within the depth of field of the contact image sensor when the media substantially transparent to visible light underlies the platen.
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