JPH0432431A - Paper separation device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a paper separating device used in facsimile machines, copying machines, and the like.

BACKGROUND OF THE INVENTION An example of a paper separation device in the prior art will be described below.

5(a) and 5(b) are a top view and a side view, respectively, of a conventional paper separating device excluding the paper loading table, and 21 is a sheet loading table having a downward slope in the paper conveying direction, 23 As shown in FIG. 5(c), the bins 23a and 23b are integrally molded in parallel to each other, and the separating plates 24a and 24b are attached to the roller 22 with the separating plates 23 inclined relative to the conveyance path of the paper. This is a support member in which bottles 23a and 23b are fitted into slightly larger holes 24c and 24d, respectively, so that the separation plate 23 can be freely rotated. Further, 25 is a spring that presses the separation plate 23 against the roller 22.

The operation of the sheet separating device configured as described above will be explained below.

First, the sheets stacked on the sheet stacking table 21 move toward the rollers 22 due to their own weight, but since the separating plate is pressed in an inclined state, only the sheets at the bottom move toward the rollers 22.
Close to 2. When the roller 22 is rotated in the direction of the arrow in this state, the bottom paper passes between the roller 22 and the separating plate 23 due to the frictional force with the roller 22, and only one paper is separated.

Problems to be Solved by the Invention However, according to the above-mentioned conventional configuration, when the separation plate is attached after long-term use, the separation plate becomes oblique to the roller as shown in Fig. 6 due to deterioration of accuracy and wear of the roller. If the separator plate came into contact with the separator plate, the separator plate was supported from both sides of the separator plate, so in the direction perpendicular to the axis of the roller, the separator plate could only rotate in the direction of the play between the axis of the separator plate and the bearing. Because the separator cannot move, the pressing force of the separator plate against the roller surface is not uniform on the left and right sides of the separator plate, causing skew or double feeding.

Means for Solving the Problems In order to solve the above-mentioned conventional problems, the present invention provides a notch in the center of an end of a separation plate, and pivotally supports the separation plate at the notch.

Function: Due to the above-described configuration, the present invention can rotate in a direction perpendicular to the axis of the roller at a larger angle than the conventional roller.

Embodiment FIG. 1 is a perspective view of a paper separation device in an embodiment of the present invention.

In FIG. 1, reference numeral 1 indicates a paper loading table, and 2 indicates rollers, which are the same as in the conventional technology. 3 is a separation plate in which a protrusion 3c is formed in the center, a notch 3a is formed in the center of the end, and a support shaft 3b is formed in the notch 3a, as shown in FIG. 2, and 4 is a separation plate in which the separation plate 3 rotates. Support shaft 3 so that it can be moved freely
A support member 5 supports the separation plate 3 by fitting the support shaft 3b into a hole 4a having a diameter slightly larger than the diameter of b, and a spring 5 presses the separation plate 3 against the roller 2.

If configured as above, in the direction perpendicular to the roller axis,
Even if the play between the support shaft 3b and the support member 4 is the same as before, the separation plate rotates at a larger angle than before, so installing the separation plate after long-term use may result in deterioration of accuracy or wear of the rollers. Even if the separation plate comes into contact with the roller surface diagonally, the separation plate can rotate along the roller surface, so double feeding and skewed feeding of sheets can be prevented.

Effects of the Invention In the present invention, a notch is provided at the end of the separation plate and the separation plate is supported axially at the notch, so even if the roller is attached diagonally to the roller surface due to deterioration of accuracy, the roller can be attached easily. Since it can be rotated along the same direction, double feeding and skewed feeding of paper can be prevented.

[Brief explanation of the drawing]

Figures 5 (a), (b), and (c) respectively show the conventional technology 1...paper loading table, 2...roller,
3...Separation plate, 4...Supporting member, 5.
...Spring. Name of agent: Patent attorney Shigetaka Awano and one other person

Claims (1)

[Claims] A paper mounting table on which paper is placed, a roller that transports the paper on the paper mounting table, and a notch in the center of the edge that is in contact with the roller and cooperates with the roller to transport the paper placed on the paper mounting table. A paper separating device comprising: a separating plate that separates only one sheet from a sheet; and a support means that pivotally supports the separating plate through the notch.