Image reading device with double image sensors

Abstract

The invention discloses an image reading device with double image sensors, which is applicable to a transaction machine provided with a transaction machine body and an automatic paper feed unit. The image reading device comprises a first image sensor arranged on the automatic paper feed unit and a second image sensor arranged on the transaction machine body, wherein the first image sensor and the second image sensor respectively sense and read information of the first face and the second face of a manuscript; the first image sensor at least comprises a first optical component, a first correcting element and an elastic contact part; the first optical component is composed of a first light source, a first sensing element and a glass surface; the first correcting element is arranged at the opposite side of the first optical component; one end of the elastic contact part is a fixed end while the other end thereof is contacted with the glass surface of the first optical component so as to lead the manuscript to be tightly attached on the glass surface.

Description

technical field [0001] The invention relates to an image reading device suitable for a business machine, especially an image reading device with dual image sensors. Background technique [0002] With the rapid advancement of electronic technology, all routine work in the office today is closely related to business machines such as photocopiers, fax machines, printers, scanners, etc., and the current electronic devices are mostly developed towards a multi-functional technology, so they can be integrated The aforementioned multifunctional business machines with multiple functions have gradually become the mainstream in the current market. [0003] Regardless of whether it is a scanner or a multi-function business machine, in order to maintain a certain quality of scanned data, the image reading device must be adjusted according to the environment, brightness, and the differences in the sensing element itself before reading the data. The sensing element performs parameter comp...

AI Technical Summary

Problems solved by technology

In addition, in order to speed up the scanning speed of the front and back images, it can be designed to read the images on the front and back sides by two image sensors respectively, but the reflection of light on the original surface where the two image sensors are located is not the same. Similarly, the quality level of the two image sensors will not be exactly the same, so the image quality read by the two image sensors will be different, so how to design two image sensors for image correction , so that the two image sensors maintain an equal scanning state is very important in an image reading device with dual image sensors

[0004] However, there may be shortcomings in the existing technology, for example, when the gap between the compensation correction position and the actual scanning position is too large, it will cause correction distortion, resulting in flawed scanning quality, or surface wear or contamination of the correction element due to paper passing. , will also cause correction distortion, making the scan quality flawed

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