JPS6112367A - Paper feed apparatus - Google Patents

Abstract

PURPOSE:To provide a paper feed apparatus capable of using both of continuous paper and cut paper, by providing simple constitution such that a guide means is provided in the downstream side of a reference roller and the advance direction of the cut paper fed from a reference roller is deflected at the time of the paper feed of the cut paper. CONSTITUTION:When continuous paper is set, the leading end part 13 of a guide means 10 is downwardly pushed and the guide means 10 is rotated around a support shaft 9 toward the direction shown by the arrow 104 and stopped. In this state, a pin feed belt 7 is rotated to the direction shown by the arrow 103 and the continuous paper 2 is fed to the direction shown by the arrow 102. When cut paper is used, the guide means 10, of which the center of gravity is present in the side of a rear end part 14 from the support shaft 9, is energized to the direction shown by the arrow 105 and stopped in such a state that the leading end part 13 thereof is raised. Therefore, the leading end of cut paper 2' discharged between a platen 1 and a bail roller 5 is impinged to the leading end part 13 of the guide means 10 and upwardly guided along the smooth inclined surface of the leading end part 13.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a paper feeding device having a reference paper feeding roller.
In particular, the present invention relates to a filter paper feeding device capable of feeding both continuous paper and cut paper.

The invention can be applied to, for example, a paper feed mechanism of a recording device.

[Prior art]

FIG. 1 is a schematic side sectional view of a recording apparatus equipped with a conventional paper feeding device.

In the figure, continuous paper 2 is wound around a platen 1. As the platen l rotates in the direction of arrow 101, the continuous paper 2 is conveyed in the direction of arrow 102, and is discharged to the outside by the pin feed tractor 3. Recording is performed on the continuous paper 2 wound around the platen 1 by a recording head 4. In addition, the pail roller 5 is removably attached to the platen 1. ◎ FIG. 2 is a perspective view showing in more detail the configuration of the platen 1 and pin feed tractor 3 in FIG. 1. In the same figure, When using continuous paper 2, the pail roller 5 is fixed at a position A away from the grating 1, and when using cut paper, it is fixed at a position B where it presses the grating 1. Further, the platen 1 is fixed to a platen drive shaft 6, and the platen drive shaft 6 is connected to a drive system such as a motor (not shown) to provide desired rotation.

The pin feed tractor 3 has a pin feed belt 7 for conveying the continuous paper 2 and a bin feed belt 7 in the direction of an arrow 10.
It is composed of a rotation shaft 8 that rotates in three directions, and a support shaft 9. The rotation of the rotary shaft 8 is interlocked with the rotation of the zolatine, and paper is ejected without applying unnecessary force to the continuous paper 2.

In this way, the conventional paper feeding device equipped with the bin feed tractor 3 can feed continuous paper. However, paper feeding for cut paper has the following problems.

FIG. 3 is a schematic side view of the filter paper feeding mechanism in FIG. 2.

In the figure, when using the continuous paper 2, first fix the pale row 55 at position A, wrap the continuous paper 2 around the platen 1, and then use the bin feed belt 7 of the pin feed tractor 3.
The holes in the continuous paper 2 are aligned with the pins, and the recording operation begins.

On the other hand, when using cut paper 2', pail roller 5
is fixed at position BK, and the cut paper 2' is held between the platen 1 and the pale plate 25, and a recording operation is performed. However, since the bin feed tractor 3 is located in the direction of movement of the cut paper, there is a problem in that the recorded cut paper z is likely to get caught in the pin feed tractor 3 and cause clogging.

As described above, conventional paper feeding devices cannot stably and reliably feed both continuous paper and cut paper.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned conventional problems.
The purpose is to provide a paper feeding device with a simple structure that can use both continuous paper and cut paper without requiring any special operations.

[Summary of the invention]

In order to achieve the above object, the paper feeding device 9 according to the present invention is provided with a guide means rotatable within a certain angle around an axis provided parallel to a reference roller (for example, a platen) downstream of the reference roller, It is characterized in that the upstream end of the means is biased to divert the direction of movement of the cut paper when it is fed.

[Embodiments of the invention]

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 4 shows a guide means 1 used in an embodiment of the present invention.
◇ In the figure, the guide means 10 is provided with a hole 11 through which the support shaft passes, and a guide plate 12 is fixed in a direction perpendicular to the direction of the hole 11.

The tip 13 of the guide plate 12 is smoothly bent downward. On the other hand, the rear end portion 14 is formed to be heavy, and the center of gravity of the means 10 is centered at the rear end portion 14 with the hole 11 as a support position.
Set it to the 4th side.

FIG. 5 is a perspective view of an embodiment of the present invention in which the guide means 10 shown in FIG. 4 is attached. In the same figure, f
The support shaft 9 is inserted into the hole 11 of the guide means 10, and 141
The means 10 is arranged in a position parallel to the bin feed belt 7 of the pin feed tractor 3 so as to be rotatable about the support shaft 9. In the free state, the tip 1 of the guide means 10
3 is located above the top surface of the bin feed belt 7 and closer to the platen 1.

The operation of this embodiment having such a configuration will be explained using FIG. 6 and FIG. There is.

As already mentioned, the linked paper 2 recorded on the platen 1 is ejected by the bin feed tractor 3. Therefore, when the continuous paper 2 is set, the leading end 13 of the guide means 10 is pushed down, and the guide means 10 rotates about the support shaft 9 in the direction of arrow 104 and stops. In this state, the guide means 10 has virtually no effect on the paper feeding operation. That is, as already mentioned, the continuous paper 2 is conveyed in the direction of arrow 102 by the bin feed belt 7 rotating in the direction of arrow 103.

FIG. 7 is a schematic side view of this embodiment when cut paper is used.

In the figure, a cut sheet / is wound around a platen 1 and is held between the platen 1 and a pail roller 5, and recording is started. At this time, the tip of cut paper 2 is placed on platen 1.
The paper is directly ejected from between the pail row 25 and the bin feed tractor 3, and the bin feed tractor 3 is not used. Therefore, the guide means 10 whose center of gravity is closer to the rear end portion 14 than the support shaft 9 is indicated by the arrow 105.
The distal end portion 13 of the id means 10 is stopped in a lifted state by a locking means (not shown). Further, the tip portion 13 is located upstream from the tip portion of the pin feed belt 7, that is, at a position close to the platen 1. Therefore, the leading edge of the cut paper 2' discharged from between the slaten 1 and the pale row 25 is 142 means 10.
It hits the tip 13 of the tip and is guided upward along the smooth inclined surface of the tip 13. In this way, the cut paper l is ejected by the guide means 10 in the direction of the arrow 106 without touching the bin feed tractor 3.

Note that the shape of the guide means 10 is not limited to this embodiment; any shape can be used as long as the center of gravity is located at the rear of the support shaft 9 and the tip has a shape that allows the cut paper to be guided upward without difficulty. It is clear that such a shape may be used.

Further, in this embodiment, the center of gravity of the guide means 10 is placed rearward to urge the tip portion 13 upward, but it goes without saying that other urging means such as a spring may be used.

〔Effect of the invention〕

As described above in detail, the paper feeding device according to the present invention includes a guide means that is rotatable within a certain angle around an axis provided parallel to the reference roller, such as a platen, downstream of the reference roller; The upstream end of the guide means is biased to deflect the force sent from the reference roller and the traveling direction of the cut paper when feeding the cut paper.

Therefore, even when using cut paper, clogging may occur.
! By simply providing a simple guide means, it is possible to reliably and stably transport both continuous paper and paper.

[Brief explanation of the drawing]

Figure 1 is a schematic side sectional view of a recording device equipped with a conventional paper feeding device, Figure 2 is a schematic perspective view of the filter paper feeding mechanism in Figure 1, and Figure 3 is the paper in Figure 2. FIG. 4 is a schematic side view of the feeding mechanism; FIG. 4 is a perspective view of a guide means used in an embodiment of the present invention; FIG. 5 is a schematic perspective view showing an embodiment of the present invention; FIG. 7 is a schematic side view of this embodiment when continuous paper is used. FIG. 7 is a schematic side view of this embodiment when cut paper is used. DESCRIPTION OF SYMBOLS 1... Silatene, 2... Continuous paper, τ... Cut paper, 3... Bin feed tractor, 10... Guide means, 13... Front end, 14... Rear end. Figure 2 Figure 4 Figure 7

Claims (2)

[Claims] (1) In a paper feeding device that has a reference roller that wraps paper and feeds the paper, and a conveying means that is located downstream of the reference roller and that conveys continuous paper, the paper feeding device is provided in parallel with the reference roller. A guide means rotatable within a certain angle about an axis is provided downstream of the reference roller, and an upstream end of the guide means is located upstream of an upstream end of the conveyance means and is directed upwardly. A paper feeding device characterized in that the paper feeding device is biased to change the traveling direction of the paper without using the conveying means. (2) The paper feeding device according to item 1, wherein the guide means has a center of gravity on the downstream side of the central axis of rotation, so that the upstream end portion is biased upward.