JP3003106B2 - Recording paper cutting method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording paper cutting system,
In particular, the present invention relates to a recording paper cutting method capable of eliminating problems such as generation of paper dust and generation of waving at an end in a recording apparatus using a rotary movable blade and having a recording paper cutter using a one-side cutting method.

[0002]

2. Description of the Related Art In a conventional recording apparatus such as a facsimile apparatus that uses recording paper, cutting of the recording paper is performed using a cutter having a fixed blade and a movable blade that moves up or down with respect to the fixed blade. Was. However, since this type of cutter has a problem in that the operating noise and impact are large, a recording apparatus having a cutter using a rotary movable blade is being developed instead.

[0003]

The above-mentioned cutters using the rotary movable blade are classified into a one-side cutting type and a two-side cutting type. Here, the one-side cutting method means that the above-mentioned rotary movable blade starts a cutting operation from a fixed position (this is referred to as a “standby position”) and returns to the above-mentioned standby position after the operation is completed. The cutting method is such that the next cutting operation can be started from the cutting end position. Comparing the two, in the one-sided cutting method, it is necessary to return the movable blade to the standby position after the cutting operation is completed. However, since the overall structure is simple and adjustment is easy, the simple type recording apparatus has A one-sided cutting type rotary cutter is used. The problem when using the one-sided cutting type rotary cutter is that, in the recording paper cutting operation, the cutting is performed while pressing the recording paper in the width direction, or the cut recording paper (which corresponds to a portion for printing the next page). The cutting position of ()) does not match the position of the fixed blade of the cutter, and a phenomenon is seen in which the cutting blade slightly comes out to the movable blade side. In some cases, paper dust may be generated by rubbing the end of the recording paper, or the end of the recording paper may be wavy. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to solve the above-described problems in the related art, to use a rotary movable blade, and to use a one-side cutting system for a recording paper cutter. It is an object of the present invention to provide a recording paper cutting method which can eliminate troubles such as generation of paper dust and generation of waving at an end portion in a recording apparatus having the above.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a recording apparatus having a recording paper cutter using a rotary movable blade and using a one-side cutting method. After the paper is cut, the recording paper is conveyed in a direction opposite to the paper direction, and then the rotary movable blade is returned to the standby position.

[0005]

In the recording paper cutting system according to the present invention, the rotary movable blade moves in one direction and cuts the recording paper. When the movable blade is returned to the standby position, the movable blade is returned to the standby position after transporting the recording paper (which corresponds to the part to print the next page) in the direction opposite to the original paper passing direction.
The movable blade and the recording paper do not come into contact with each other, and the problem as described above does not occur.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 2 is a sectional view of a main part of a facsimile apparatus showing one embodiment of the present invention. In FIG. 2, 1 is a main body base of the facsimile apparatus, 2 is a platen roller, 3 is a rotary cutter main body, 3a is a fixed blade, 3b is a rotary movable blade, and 3c is a guide plate (cutter). 3 see the perspective view shown in FIG. 3). 4 is a paper discharge roller, 5 is a pressure roller facing the paper discharge roller 4, 6 is a spring for pressing the thermal head 7 against the platen roller 2, 8 is a bracket for supporting the thermal head 7, and 9 is a bracket. The upper base 10 is a roll of recording paper. Note that reference numeral 11 in FIG. 3 denotes a cutter driving unit. The paper discharge roller 4 is a roller with a one-way clutch in the paper discharge direction.

FIG. 1 is a timing chart showing the operation timing of the recording paper transport motor and the cutter drive motor in this embodiment. FIG. 1A shows the operation of the recording paper transport motor, and FIG. The operation of the cutter motor is shown. (C) shows the operation of the conventional cutter motor shown for reference. As can be understood from FIGS. 1A and 1B, the operation of the apparatus according to the present embodiment is such that the recording paper transport motor rotates forward during printing, and the cutter motor rotates forward when printing is completed. Then, the printing end portion of the recording paper is cut by the one-side cutting method described above. Then, after the operation of returning the leading edge of the recording paper to the printing start position by the reverse rotation of the recording paper transport motor, that is, at least at the time when the leading edge of the recording paper is pulled in from the fixed blade of the cutter, That is, the cutter motor rotates in the reverse direction to return the movable blade to the above-described standby position. Therefore, in this case,
As a result, the user can see the margin of time indicated by "a" in the figure, and this causes troubles such as generation of paper dust and generation of waving at the end caused by contact between the movable blade and the leading end of the recording paper. Can be eliminated.

On the other hand, in the conventional method shown for comparison, when printing is completed, the cutter motor rotates forward to cut the printing end portion of the recording paper, and immediately, the cutter motor rotates reversely to move. Return the blade to the aforementioned standby position. For this reason,
During this operation, the recording paper transport motor rotates reversely, and the operation of returning the leading end of the recording paper to the printing start position starts, causing the above-described problem. FIG.
The position (a) of the recording paper at the time of standby and at the start of printing, the position (b) of the recording paper at the end of printing (that is, at the start of cutting), and the position (c) of the recording paper at the start of printing the next page ) Is shown for reference. In the drawing, “print” indicates that printing is being performed. According to the above embodiment, paper dust is generated in a recording apparatus having a recording paper cutter using a rotary movable blade and using a one-side cutting method.
Troubles such as generation of waving at the end can be eliminated. Further, as compared with the conventional cutting method shown in FIG. 4C, there is also an effect that the printing interval can be shortened by the time indicated by "b" in the figure.

[0009]

As described above in detail, according to the present invention, paper dust is generated in a recording apparatus having a recording paper cutter using a rotary movable blade and a one-side cutting method.
This has a remarkable effect of realizing a recording paper cutting method capable of eliminating a trouble such as occurrence of waving at the end.

[0010]

[Brief description of the drawings]

FIG. 1 is a timing chart showing operation timings of a recording paper transport motor and a cutter drive motor according to an embodiment of the present invention.

FIG. 2 is a sectional view of a main part of the facsimile apparatus of the embodiment.

FIG. 3 is a perspective view showing a structure of a cutter.

FIG. 4 is a diagram showing a position of a recording sheet at each timing shown in FIG. 1;

[Explanation of symbols]

1: body base of facsimile machine, 2: platen roller, 3: cutter body, 3a: fixed blade, 3b: movable blade, 3
c: guide plate, 4: discharge roller, 5: pressure roller, 6:
Spring, 7: thermal head, 8: bracket,
9: upper base, 10: recording paper, 11: cutter driving unit.

Claims (2)

(57) [Claims] 1. A recording apparatus having a recording paper cutter using a rotary movable blade and using a one-side cutting method,
After the recording paper is cut using the rotary movable blade, the recording paper is conveyed in a direction opposite to the paper direction, and then the rotary movable blade is returned to a standby position. Cutting method. 2. The recording paper according to claim 1, wherein the operation of transporting the recording paper in a direction opposite to the paper passing direction also serves to transport the leading end of the next page of the recording paper to a printing position. Cutting method.