Automatic file feeding device and file feeding method thereof

Abstract

The invention relates to an automatic file feeding device supporting single-side and double-side scanning and a file feeding method thereof. The automatic file feeding device comprises a feeding path, a positive scanning discharging path, a negative scanning path and a negative scanning discharging path, wherein the positive scanning discharging path is selectively connected with the negative scanning path through a door structure, a file on the way can push the door structure to open a certain angle, the negative scanning path is provided with a clutch and a paper clamping block, the clutch comprises a transmission part and a brake part, the brake part is separated from the paper clamping block when the transmission part is meshed with a feeding roll, and the transmission part is separated from the feeding roll when the brake part is meshed with the paper clamping roll. The automatic file feeding device has low cost, small appearance size, and high scanning speed because the image scanning space is controlled little as soon as possible, and adapts to a high-end or low-end scanner.

Description

technical field [0001] The invention relates to an automatic document feeding device and a document feeding method using the device, in particular to an automatic document feeding device providing single-sided and double-sided scanning paths and a document feeding method thereof. Background technique [0002] In scanners, an automatic document feeding device is usually used to provide automatic feeding of documents, thereby improving work efficiency and quality. Generally, the automatic document feeding device can realize the document automatic feeding function of single-sided scanning and double-sided scanning. In addition, the current pursuit trend is small size, simple structure, easy control, low cost, and high speed, so most of the conventional technologies are developed towards this goal. [0003] U.S. Patent No. 5,438,435, published on August 1, 1998, discloses a double-sided scanning document feeder with a C+S path, which has a high document feeding speed, but at le...

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Problems solved by technology

[0003] U.S. Patent No. 5,438,435, published on August 1, 1998, discloses a double-sided scanning document feeder with a C+S path, which has a high document feeding speed, but at least one The feed roller needs to be reversed, which not only increases the complexity of the control method, but also makes the transmission mechanism more complicated and expensive

[0004] U.S. Patent No. 6,970,272 issued on November 29, 2005 discloses a U-shaped path double-sided scanning document feeder with a sorting function. When scanning the reverse side, it enters the scanning area from the end of the paper to scan , which will increase the distance between images, so that the double-sided scanning efficiency cannot be effectively improved; and due to the paper characteristics, the curvature and radius of walking on the document travel path are limited, making the appearance of the model with this design larger size

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