JPH01261161A - Discharge device - Google Patents

Abstract

PURPOSE:To discharge paper sheets on a tray and align same on the tray by providing an auxiliary discharge roller having a flexible blade on the same axis as that of a discharge roller, and setting the length of the flexible blade in such a manner that the blade contacts the upper surface of the tray. CONSTITUTION:As driving force is not applied to a paper sheet which has passed between a discharge roller 13 and a pinch roller 15 during paper discharge operation, the paper sheet is put in the condition shown by a two-dot chain line 11a, so that sometimes the trailing end of the paper sheet is still in contact with the roller 13. As a blade 20a is rotated in the direction of an arrow A, the blade taps the trailing end of the paper sheet 11a to surely forward the paper sheet on a tray 17. Further, the blade 20a is moved in the direction of an arrow D while being in contact with the paper sheet 11 dropped on the tray 17, so that the paper sheet 11 is drawn in the direction of an arrow D to be brought into contact with the wall surface of an enclosure 18 and aligned. Accordingly, even if the paper sheet 11 discharged from the roller 13 is discharged with warp on the tray 17, immediately the paper sheet is aligned not to be dropped from the tray by the following paper sheet. Thus, discharged paper sheets are aligned and accumulated on the tray.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an ejection device for ejecting paper such as a document or a recording paper in a facsimile machine, a copying machine, or the like.

2. Description of the Related Art Conventionally, as shown in FIGS. 2 and 3, a device of this type includes a discharge row 22 and a pinch roller 3, which are disposed above and below a discharge path for paper 1 to be discharged, and a discharge roller. It has an auxiliary ejection row 24 that is arranged on the same axis as the ejection slot 2 and has a larger diameter than the ejection slot chive, and a tray 5 that receives and receives the ejected paper. pinch low 23
It was sandwiched between them and discharged onto tray 5. Here, the auxiliary discharge row 24 is provided to prevent the paper 1 that has exited the discharge row 22 and the pinch roller 3 from stopping at that position, and to reliably send the paper 1 onto the tray 5. Also, usually
The discharge row 22 is driven in the direction of the arrow by a drive device (not shown) K, and the pinch roller 3 is structured to rotate in the direction of the arrow. In addition, in the figure, 6 is a housing.

Problems to be Solved by the Invention However, since the conventional device with such a configuration is only for simply discharging paper, the paper fed crookedly is ejected onto the tray with the crooked state. Even paper that is fed straight may be bent and ejected by the ejection mechanism, causing it to be piled up on the tray in pieces, and in extreme cases, it may be pushed by the document behind it and fall from the tray. There was a problem.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a discharging device capable of arranging sheets discharged onto a tray on a tray.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides an auxiliary ejection roller having flexible blades on the same axis as the ejection roller located below the paper ejection path. The flexible blade has a length that makes contact with the upper surface of the tray.

According to the above-described structure, the auxiliary discharge roller rotates when the paper is discharged, and its flexible blade strikes the trailing edge of the paper that has exited the discharge roller, thereby reliably discharging the paper onto the tray. Further, the flexible blade contacts the upper surface of the paper stacked on the tray and pulls the paper toward the user, thereby aligning the paper with the wall at one end of the tray. In this way, it is possible to reliably eject the sheets and align them on the tray.

Example Hereinafter, the present invention will be described in detail as shown in the drawings.

FIGS. 1(a), 1(b), and 1(e) are schematic sectional views illustrating the operation of a discharge device according to an embodiment of the present invention. In the figure, 11 is paper, 12 is a guide forming a paper ejection path, 13 is an ejection roller disposed below the ejection path, and 1
4 is a discharge roller shaft that fixedly holds the discharge roller 13;
15 is disposed above the ejection row 213 and the ejection roller 13
Pinch roller pressed against, 16-pin pinch roller shaft,
Reference numeral 17 represents a tray on which the discharged sheets are deposited, and reference numeral 18 represents a housing. Normally, the ejection roller shaft 14 is connected to a drive device (not shown) and is configured to rotate the ejection roller 13 in the direction of arrow A. On the other hand, the pinch roller 15 is rotatable and is driven by the ejection roller 13. It is configured to be rotated in the direction of arrow B. Note that a configuration may also be adopted in which the pinch roller 15 is driven and the discharge roller 13 rotates along with the pinch roller 215.

m is an auxiliary discharge roller that is fixed to the discharge roller shaft 14 and rotates together with the discharge roller shaft 14. This auxiliary discharge roller has flexible blades 20a made of rubber or the like. The length of the blade 20a is determined so that the tip thereof extends outside the outer diameter of the discharge roller 13 and can come into contact with the upper surface of the tray 17, as shown in (b) and (e). There is.

The operation of the discharge device having the above configuration will be explained below.

1), the paper 11 to be discharged is pinched between the discharge roller 13 and the pinch roller 15, and both rollers 1
The paper is ejected onto the tray 17 by 3.150 rotations, and the trailing edge of the paper falls onto the tray 17 as shown by arrow C. During this paper ejection, no driving force is applied to the paper that has passed between the ejection roller 13 and the pinch roller 15, so for some reason the paper may be damaged as shown by the two-dot chain line 11a in FIG. 1(b). In this case, the trailing edge of the paper may remain in contact with the discharge roller 13. However, since the blades 20& are rotating in the direction of arrow A, they strike the rear end of the paper 11a and feed it onto the tray 17. In this way, the paper is reliably fed onto the tray 17. Furthermore, this blade 20a moves in the direction of the arrow while contacting the paper 11 that has fallen onto the tray 17. As a result, the sheets 11 are drawn in the direction of the arrow, and are aligned against the wall surface of the casing 18, as shown in FIG. 1(c). Therefore, the paper 11 ejected from the ejection roller 13 is transferred to the tray 1.
Even if it is discharged distorted on the top, it will be immediately aligned,
No subsequent sheets of paper will be thrown out of the tray. In this way, the sheets discharged from the discharge roller are aligned and stacked on the tray.

Note that in order for the blade 20a to pull the paper 11 on the tray 17 in the direction indicated by the arrow, it is desirable that the blade 20a make strong contact with the paper 11. Therefore, in the illustrated embodiment, the tip of the blade 20a is made thicker so that the blade 20a is not heavy. It is constructed so that a large centrifugal force acts on it. However, it goes without saying that the blade of the present invention is not limited to the structure shown in the drawings. Further, in the above embodiment, the auxiliary ejection roller is fixed to the ejection roller shaft 14 and rotates at the same speed as the ejection roller 13, but the auxiliary ejection roller does not necessarily need to rotate at the same speed as the ejection roller 13. Instead, the auxiliary ejection roller may be configured to be rotatable relative to the ejection roller shaft 14 and driven by a separate drive device, or connected to the ejection roller shaft 14 via a torque limiter.
It may be configured to rotate at a slower speed than the discharge roller 13.

Effects of the Invention As is clear from the above description, the present invention has the advantage of providing an auxiliary ejection roller with flexible blades on the same axis as the ejection roller located below the paper ejection path. The flexible blade is long enough to touch the top surface of the tray, so when the paper is ejected, the auxiliary ejection roller rotates, and the flexible blade hits the trailing edge of the paper that has exited the ejection roller, ensuring a secure feed. The flexible blades contact the top surface of the paper stacked on the tray, pull it toward you, and press the paper against the wall at one end of the tray to align it. This has the effect that it is possible to

[Brief explanation of the drawing]

FIGS. 1(a), (b), and (c) are sectional views explaining the operation of a discharge device according to an embodiment of the present invention, FIG. 2 is a sectional view of a conventional discharge device, and FIG. 3 is a sectional view of the conventional discharge device. FIG. DESCRIPTION OF SYMBOLS 11... Paper, 12... Guide, 13... Ejection roller, 14... Ejection roller shaft, 15... Pinch roller, 16... Pinch roller axis, 17... Tray, 1
8... Housing, addition... Auxiliary discharge roller, 20a...
Feather. Name of agent: Patent attorney Toshio Nakao #1 or 1 person 1ml Figure 2

Claims (1)

[Claims] A discharge roller located below the paper discharge path and discharges the paper, an auxiliary discharge roller disposed on the same axis as the discharge roller and equipped with flexible blades, and a paper discharged by the discharge roller. A discharging device comprising a tray for receiving the tray, and a flexible blade of the auxiliary discharging roller has a length that makes contact with the upper surface of the tray.