1. Field of the Invention
The present invention relates to a paper staging mechanism capable of keeping a fixed distance between two adjacent papers in the process of being scanned.
2. The Related Art
A traditional paper staging mechanism includes a picking mechanism, a separating mechanism and an image scanning mechanism. In use, the separating mechanism separates papers from the picking mechanism and further transmits the separated paper to the image scanning mechanism where the paper is scanned to get a digital scan image. However, since the transmission of the papers is easily influenced by abrasion or skid of rollers of the paper staging mechanism, there is an unfixed relative distance between two adjacent papers which successively pass through the image scanning mechanism. As a result, the digital scan image has an uncertain size.
Accordingly, an object of the present invention is to provide a paper staging mechanism capable of adjusting a relative distance between two adjacent papers in the process of being scanned. The paper staging mechanism includes a picking mechanism, a separating mechanism and a detecting mechanism. The picking mechanism includes a picking roller assembly, a pressing mechanism and a driving mechanism. The driving mechanism is mounted to a side of the picking roller assembly and drives the picking roller assembly to rotate. The pressing mechanism is located over the picking roller assembly. The picking roller assembly rotates to pick up the paper and further feed the paper rearward under the cooperation of the pressing mechanism pressing against the paper. The separating mechanism is mounted to rear of the pressing mechanism and located over the picking roller assembly. The separating mechanism separates the papers from the picking mechanism and further transmits the separated paper rearward. The detecting mechanism is mounted to rear of the picking mechanism and the separating mechanism. The detecting mechanism includes a sending component and a receiving component which is apart disposed corresponding to the sending component. The separated paper by the separating mechanism co-working with the picking roller assembly of the picking mechanism passes rearward through between the sending component and the receiving component of the detecting mechanism. The sending component and the receiving component of the detecting mechanism detect the relative distance between two adjacent papers which successively pass through the detecting mechanism. When the relative distance is abnormal, the detecting mechanism feeds back abnormal signals to the driving mechanism. The driving mechanism controls the rotation of the picking roller assembly to speed up or slow down so as to achieve a fixed distance between two adjacent papers.
As described above, the embodiment of the invention of the paper staging mechanism utilizes the sending component and the receiving component of the detecting mechanism to detect the relative distance between two adjacent papers, so as to adjust the relative distance and keep a fixed distance between two adjacent papers in the process of being scanned. So it can effectively reduce scanned image problems.
The present invention will be apparent to those skilled in the art by reading the following description thereof, with reference to the attached drawings, in which:
Referring to the drawings in greater detail, and first to
Referring to
The separating mechanism 20 is mounted to rear of the pressing plate 121 of the pressing mechanism 12 and located over the second picking roller 112 of the picking roller assembly 11. In the embodiment of the present invention, the separating mechanism 20 includes a group of separating rollers. The separating mechanism 20 separates the papers from the picking mechanism and further transmits the separated paper rearward to the image scanning mechanism 42.
Referring to
In the embodiment of the present invention, the detecting mechanism 30 is a gap sensor. The sending component 31 is set over the receiving component 32 in vertical direction. The sending component 31 and the receiving component 32 are set by being not limited to above said position, the sending component 31 and the receiving component 32 can be set in a certain angle. Even the sending component 31 and the receiving component 32 can swap places.
Referring to
As described above, the embodiment of the invention of the paper staging mechanism 100 utilizes the sending component 31 and the receiving component 32 of the detecting mechanism 30 to detect the relative distance between two adjacent papers, so as to adjust the relative distance and keep a fixed distance between two adjacent papers in the process of being scanned. So it can effectively reduce scanned image problems.
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