JPS612642A - Paper aligner mechanism for copier - Google Patents

Abstract

PURPOSE:To reduce screw in paper feed in a paper aligner mechanism for copier, by providing the shaft of an aligner roll rotatably around a fulcrum and varying the roll angle with correspondence to the reaction force functioning onto the roller. CONSTITUTION:When travelling (aligning) a paper 7, the aligner 1 is positioned as shown by solid line to feed the paper 7 along a guide 8. When the end section of paper 7 will travel along the guide 8, and load against the paper carrying force to be produced through lateral component P1 of the paper carrying force P will increase and function as the reaction force to bring the roll 1 between the solid line and the dashed line. Consequently, the force for pushing the paper 7 obliquely against the guide 8 will decrease. Upon contact of the paper 7 against the tip of a transport roll 9, the roll 1 will start slipping against the roll 1 and come to the dash line position as the reaction force increases. Since the direction of the carrying force P will be same with the advancing direction of paper, the next paper can be fed without screw.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to a paper aligner mechanism of a paper feed mechanism of a copying machine.

Conventional technology Conventionally, in an aligner mechanism, rollers are generally arranged diagonally with respect to the paper path direction, a guide is provided that abuts the edge of the paper parallel to the paper path, and the paper is guided along this guide. It has a mechanism to correct the position and skew in the side direction.

Problems to be Solved by the Present Invention However, in the case of the above method, the paper is generally pushed diagonally against the guide and fed due to the stiffness of the paper, the angle of the rollers, the pinch pressure of the rollers, etc. Therefore, there are large restrictions on the angle of the rollers, the type of paper, the length of the path, etc., and there is a drawback that it cannot be used in places with strict performance requirements.

Means and Function for Solving the Problems The present invention solves the above problems by making the shaft of the aligner roll rotatable around a fulcrum and changing the roll angle by the reaction force applied to the roller. This is a characteristic feature.

Embodiment In the accompanying drawings, an aligner roll 1 is pulled in one direction by a weak spring 2. 3 is a shaft, 4 is a guide for the shaft 4, 5 is a joint, and the shaft 3 is rotatable around a fulcrum 6.

When traveling (aligning) the paper 7, the position of the roll 1 is as shown by the solid line, and the paper 7 is fed so as to be aligned with the guide 8. Next, when the paper travels with the edge of the paper along the guide 8, the load of the paper transport force generated by the lateral component P1 of the paper transport force P increases, and this becomes a reaction force and the roll 1 falls between the solid line and the dashed line.

Therefore, the force obliquely pressing the paper 7 against the guide 8 is reduced. In the figure, P2 is a component force in the traveling direction.

Next, when the paper 7 hits the tip of the stopped transport roll 9, the paper stops and the aligner roll 1 begins to slip against the paper, and as the reaction force increases, it reaches the position indicated by the broken line. . Here, paper conveyance force P
Since the direction is the same as the direction in which the paper is to be advanced, the next paper can be fed without skewing.

Effects of the Invention In the aligner according to the present invention, the angle of the roll changes according to the reaction force generated by the conveying force applied to the paper, and this makes it possible to optimize the hector of the conveying force applied to the paper. It is possible to reduce the skew of the paper when it is delivered to the transport roll of the paper.

[Brief explanation of drawings]

The drawing is a plan view showing an embodiment of the present invention. 1... Aligner roll

Claims (1)

[Claims] A paper aligner mechanism for a copying machine, characterized in that the shaft of the aligner roll is rotatable around a fulcrum, and the roll angle is changed by a reaction force applied to the roll.