Paper feeder and image forming device

A technology of supplying device and paper, applied in the directions of transportation and packaging, separation of objects, separation of piles, etc., can solve problems such as difficult separation

Inactive Publication Date: 2004-04-28
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here, when the air paper feeding method is adopted, since the air injected from the side of the paper bundle has a constant flow rate, the upper part of the paper bundle floats in a bundle state at the inte

Method used

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  • Paper feeder and image forming device
  • Paper feeder and image forming device
  • Paper feeder and image forming device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0048] Below, refer to Figure 5 Embodiment 2 of the present invention will be described. It should be noted that, regarding the reference numerals in the drawings, the same reference numerals are assigned to the same structures as those of the above-mentioned first embodiment, and the description thereof will be omitted.

[0049] In this embodiment, an ejection pipe 413 is provided on the top end side of the sheet bundle in the sheet conveying direction. In addition, a separation nozzle 419 is provided on a separation pipe 418 connected to a separation fan (not shown), and the separation air is supplied obliquely toward the adsorption belt 407 through the separation nozzle 419 . This separated air is effective in making only the uppermost paper stick to the suction belt and separating and dropping the next paper below.

[0050] In the present embodiment, the shutter 415 starts from the highest position ( Figure 5 (a)) to the lowest position ( Figure 5 (b)) reciprocating...

Embodiment 3

[0054] Below, refer to Figure 6 and Figure 7 Embodiment 3 of the present invention will be described. It should be noted that, regarding the reference numerals in the drawings, the same reference numerals are assigned to the same structures as those of the first and second embodiments described above, and the description thereof will be omitted.

[0055] In this example, if Figure 6 and Figure 7 As shown, when the drive of the adsorption belt 407 (work), the wind speed of the injection air is set near the minimum wind speed (refer to Figure 7 (a)). The wind speed of the sprayed air can be based on the position of the shutter 415, the strength of the sprayed air supply source, or any one of the combined effects of the two. According to this, the paper is fed at a timing when the blowing air velocity is sufficiently low, so that it is possible to provide a paper feeding device in which the above-mentioned multiple sheets are hardly fed together.

[0056] In addition, ...

Embodiment 4

[0059] Below, refer to Figure 8 Embodiment 4 of the present invention will be described. It should be noted that, regarding the reference numerals in the drawings, the same reference numerals are assigned to the same structures as those of the first and second embodiments described above, and the description thereof will be omitted.

[0060]In this embodiment, the swing nozzle 421 of the air direction variable member that can rotate the upper side end of the paper bundle in the vertical direction is provided in the ejection pipe 413 provided on the top end side of the paper bundle. The swing nozzle 421 sprays continuously toward the side end of the sheet bundle S Figure 8 (a) up, Figure 8 (b) to the horizontal direction, Figure 8 (c) Downward air. The oscillating nozzle 421 sprays air while rotating up and down, so it can continuously supply air with changing wind direction to the bundle of paper, so that the air flows into the adsorbed paper or the gap between the loa...

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PUM

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Abstract

A sheet feeder has a plurality of sheets supported on an intermediate plate, and feeds sheets separately one by one by attracting them by a suction belt. Air is blown from a blowing duct through an opening toward a side edge of a sheet bundle supported by the intermediate plate in order to handle the sheet bundle, and so as to vary the speed and/or direction of air blown from the opening to reliably handle the sheet bundle, whereby a sheet conveying operation by the suction belt is performed when the speed of air blown on the side edge of the sheet located in the uppermost position bundle is not more than a predetermine value.

Description

technical field [0001] The present invention relates to a paper supply device that separates and feeds a bundle of paper sheets loaded in a paper storage unit one by one. Background technique [0002] Conventionally, in image forming apparatuses such as copiers and printers, slices of recording media that can be continuously fed are usually limited to high-quality paper and plain paper specified by copier manufacturers. In such paper, the smoothness of the surface is low, and the air permeability is also low, so air tends to flow into the paper. Therefore, when the paper is taken out from the loaded paper one by one, the paper is often adsorbed to each other, and many occurrences often occur. Zhang together supply the situation. [0003] However, in recent years, with the diversification of recording media, in addition to thick paper, OHP paper, tracing paper, etc., due to the market demand for colorization, in order to express whiteness and gloss, the art of coating on the...

Claims

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Application Information

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IPC IPC(8): B65H3/12B65H3/48
Inventor 古贺宽人
Owner CANON KK
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