The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 06, 2007
Filed:
Dec. 12, 2002
Sheng-kao Chen, Hsinchu, TW;
Sheng-Kao Chen, Hsinchu, TW;
BenQ Corporation, Taoyuan, TW;
Abstract
The present invention relates to an image scanning apparatus having a scanning module, a transmission belt, a speed-change gear module, and a driving device. The driving device drives the transmission belt by using the speed-change gear module so as to drive the scanning module positioned on the transmission belt to scan an image. The speed-change gear module provides various speed-change ratios so that the driving device may drive the transmission belt at different speeds under the same speed of the driving device. In the embodiment, the speed-change gear module has a switching platform for accommodating the speed-change gear module. The stepping motor serving as the driving device is connected with the speed-change gear module by the motor gear. The transmission belt is connected with the speed-change gear module by the belt wheel. When moving or rotating the switching platform to switch between the deceleration ratios, a first set of deceleration gear and a second set of deceleration gear selectively engages with a motor gear.