JPS5935771Y2 - Recording paper feeding device - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a recording paper feeding device.

2. Description of the Related Art In various recording devices or recording/reading devices, when feeding recording paper, it is necessary to ensure that the feeding direction is always perpendicular to the width of the recording paper.

If this feeding direction meanders, the recorded value or read value will change from the correct value.

Conventionally, therefore, it has been common practice to install a pair of sprockets coaxially with the feed drum, and to use recording paper with perforations at both edges.

According to this, the perforations are used to feed the recording paper through the pawls of the sprocket, so
It is sent without any meandering.

However, with this configuration, a sprocket must be provided and recording paper with perforations must be used.

Not only that, but only recording paper of a width that matches the spacing between the paired sprockets can be used, and recording paper of different widths cannot be fed correctly.

The purpose of this invention is to correctly feed recording paper regardless of the width of the recording paper without using a sprocket.

An embodiment of this invention will be described with reference to the drawings.

1 is a recording paper, 2 is a feed drum, 3 is a plurality of rollers, and 4 is a stopper.

The feed drum 2 is rotated in the direction of arrow A by a suitable driving source, and each roller 3, which is pressed against the feed drum 2 by a spring or the like, rolls into contact with the feed drum 2 and rotates in the direction of arrow B.

However, as can be understood from the figure, the rotation axis of each roller 3 is arranged to intersect with the rotation axis of the feed drum 2.

In the above configuration, the recording paper 1 is fed so as to be sandwiched between the feed drum 2 and each roller 3.

As the feed drum 2 rotates, the roller 3 also rotates, and the recording paper 1 is fed according to the direction rotation.

However, the rotational axis of the roller 3 is given a feeding force in a direction intersecting the rotational axis of the feed drum 20.

That is, in the example shown in the figure, one edge 1A of the recording paper 1 moves in the direction of arrow C.

This transition causes the ear end 1A to come into contact with the stopper 4.

Since the recording paper 1 does not move beyond this contact, the recording paper 1 ends up being fed with its edge 1A contacting the stopper 4 and sliding.

If the stopper 4 is installed at a fixed position, that is, on the edge 1A of the recording paper 1 when the recording paper 1 is fed by applying a feeding force in the direction perpendicular to the rotation axis of the feed drum 2, then The edge 1A always passes through its fixed position correctly, and as a result, meandering of the recording paper 1 is reliably prevented.

Note that as the intersection angle between the rotational axis of the roller 3 and the rotational axis of the feed drum 20 increases, the arrow C of the recording paper 1 increases.
The force in the direction becomes stronger.

If this force becomes too large, there is a risk that the recording paper 1 will bend and become wrinkled, so it is necessary to set the crossing angle to an extent that prevents this from occurring.

As described above, according to this invention, one end of the recording paper is fed through a fixed position regulated by a stopper, thus eliminating the need for sprockets and perforation-prone recording paper as in the past. Moreover, there is no need for recording paper with a fixed width, and recording paper having an arbitrary width can be fed.

[Brief explanation of the drawing]

The figure is a perspective view showing an embodiment of this invention. 1...Recording paper, 2...Feeding drum, 3...Roller, 4...Stopper 1 person...Ear end.

Claims (1)

[Scope of utility model registration request] A roller is rotated into contact with a rotationally driven feed drum, a recording paper is sandwiched between the feed drum and the roller, and feeding is applied, and the rotation axis of the roller intersects with the rotation axis of the feed drum. A recording paper feeding device comprising: a stopper disposed on one edge side of the recording paper, with which this edge comes into contact;