Patent ID: 6268938
Filing Date: 2001-07-31
Classification: H04N

Abstract:
A scanner for scanning a document comprising:an image pickup module comprising a housing having a scanning surface, a light source and an elongated light sensor installed inside the housing under the scanning surface, the scanning surface comprising a line-shaped scanning position parallel to the light sensor wherein when the document is carried through the scanning position, the light emitted from the light source will be reflected from the document over the scanning position and received by the light sensor;a document roller rotatably mounted against the scanning surface of the image pickup module for carrying the document backward through the scanning position;wherein the scanning surface further comprises a groove having a transparent bottom installed at the scanning position for allowing the light reflected from the document over the scanning position to pass through so as to scan the document whereby when the document is carried through the scanning position of the scanning surface, it will not be in contact with the transparent bottom of the groove wherein one side of the groove is formed by a first thin material, and the first thin material is stuck over the scanning surface to form the groove.