Patent ID: 6717703
Filing Date: 2004-04-06
Classification: H04N

Abstract:
A scanner comprising:a housing with a transparent surface on a top of the housing, a document being placed on the transparent surface for scanning; a guide screw rod set in the housing along a front-to-back direction, the guide screw rod having a screw thread on its surface; a scanning module set on the guide screw rod, the scanning module moving forward and backward along the guide screw rod to scan the document; a gear device set on the guide screw rod, the gear device having at least one tooth to engage with the screw thread on the guide screw rod; a motor on a side of the gear device, the motor moving with the gear device to drive the gear device back and forth; wherein when the motor drives the gear device, the teeth of the gear device move along the screw thread on the guide screw rod so as to drive the gear device back and forth along the guide screw rod, and therefore the scanning module in the housing is driven back and forth by the gear device to scan the document.