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Media Feeding Device and Image Reading Device
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Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of feeding device and medium, applied in image communication, object supply, transportation and packaging, etc., can solve the problem that the movement detection part cannot detect and so on
Active Publication Date: 2022-07-12
SEIKO EPSON CORP
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Abstract
Description
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[0011] The space mentioned here is formed by the separation between the rear end of the first original and the rear end of the second original, but sometimes the following situation also exists: there is no gap formed between the rear end of the first original and the rear end of the second original. The gap is such that the rear end of the first document and the rear end of the second document advance directly downstream in the feeding direction, or even if the gap is formed, the gap is so small that the movement detection unit cannot detect the gap.
In addition, there may be cases where the trailing end of the second document is lifted and cannot be detected by the movement detection unit.
Method used
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no. 1 approach
[0137] Below, refer to Figure 9 and Figure 10 The gap forming mechanism 50A according to the first embodiment will be described.
[0138] The gap forming mechanism 50A is configured to include a protruding portion 51 protruding upward from the mounting surface 11a. In this way, the rear end P2E of the second document P2 is hooked to the protrusion 51 , so that the interval Gp equal to or greater than the detection interval Gr can be appropriately formed.
[0139] In addition, if the movement in the case where the rear end P2E of the second document P2 is hooked on the protrusion 51 will be specifically described as an example, when the feeding of the stapled first document P1 starts, the operation will be as follows: Image 6 As described above, the second document P2 is swollen upward, the rear end P2E of the second document P2 is hooked on the protrusion 51, and the movement in the +Y direction is temporarily stopped, thereby increasing the interval Gp. Further, when th...
no. 2 approach
[0148] Below, refer to Figure 11 The gap forming mechanism 50B according to the second embodiment will be described.
[0149] The gap forming mechanism 50B according to the second embodiment is constituted by the protrusions in the same manner as in the above-described first embodiment, but as Figure 11 As shown, the gap forming mechanism 50B according to the second embodiment forms a semicircle when viewed from the side.
[0150] Also according to such a gap forming mechanism 50B, the same effects as those of the above-described first embodiment can be obtained.
no. 3 approach
[0152] Below, refer to Figure 12 The gap forming mechanism 50C according to the third embodiment will be described.
[0153] The gap forming mechanism 50C according to the third embodiment is constituted by the protrusions in the same manner as in the above-mentioned first and second embodiments, but as Figure 12 As shown, the gap forming mechanism 50C according to the third embodiment includes a base 54 and a roller 53 . The roller 53 is provided so as to be rotatable relative to the base 54 . The base 54 and the roller 53 constitute protrusions.
[0154] According to such a gap forming mechanism 50C, the same functions and effects as those of the above-described first and second embodiments can be obtained, and further damage to the lower surface of the first original P1 can be suppressed more reliably.
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Abstract
A medium feeding device and an image reading device are provided to properly detect the stitching of the trailing end of the first document and the trailing end of the second document. The medium feeding device includes: a medium placing portion having a medium placing surface formed thereon; a feeding mechanism that contacts and feeds the medium at the lowest position among the media placed on the medium placing portion in the feeding direction; and a separating mechanism , separates the medium from the feeding mechanism; the movement detection mechanism is arranged in the medium placement part at a position opposite to the surface of the medium, and detects the movement of the medium at least in the feeding direction; the gap forming mechanism is in the feeding direction. It is provided upstream of the motion detection mechanism in the direction, and is used to be stapled together with the first medium at the rear end of the first medium in the lowest position sent out by the feeding mechanism among the mediums placed on the medium placing portion. The rear end of the second medium loaded on the first medium forms an interval in the feeding direction; and the control mechanism stops the feeding of the medium according to the detection interval of the detected value by the motion detection mechanism.
Description
technical field [0001] The present invention relates to a medium feeding device for feeding a medium, and an image reading apparatus including the medium feeding device. Background technique [0002] In the image reading apparatus and / or the recording apparatus, a medium feeding device for feeding the medium is provided. When feeding a medium, a feeding abnormality such as a skew of the medium may occur, and a technique for detecting such a feeding abnormality has been conventionally known. Patent Document 1 discloses a sheet feeding device including a placing portion for placing a sheet, a feeding portion for feeding a sheet on the placing portion side, A separation part for separating sheets one by one between parts, and a movement detection part for detecting movement of sheets on the placing part. [0003] In the configuration described in Patent Document 1, the movement detection unit employs a tracking-type optical sensor that irradiates light from a light source wit...
Claims
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Application Information
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