JP2002002041A - Roll sheet cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roll sheet cutter in which sheet jam does not take place even when a coreless roll sheet having a severe curl is used. SOLUTION: When cutting of a previous roll sheet (P) is ended, the roll sheet stops while touching the forward end thereof to the edge (12) of a fixed cutter (10) and a movable cutter (20) waits at a position on the left side of a slit (3). Current print is performed at a print section (34) under that state and when print of one line is ended, a feed roller (30) feeds the roll sheet by one line. When print of several lines is ended, forward end of the roll sheet having a severe curl slides strongly clockwise to abut against an auxiliary guide (100) disposed under a sheet guide (4). Consequently, the roll sheet is prevented from entering the gap A between a lower frame (1) and an upper frame (2) to generate sheet jam. When a required quantity of print is ended and the roll sheet is stopped, the movable cutter (20) moves in the rightward direction on the drawing and the roll sheet P is cut.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet cutter, and more particularly to a roll paper cutter.

[0002]

2. Description of the Related Art ECR (electronic cash register), POS
(Terminal-type cash register), ATM (Cash Automatic Teller Machine), and the like often use roll paper to create receipts and the like. In this case, each time printing of each line is completed by a printer or the like arranged below the frame, the roll paper is sent out from a slit provided in the frame, and when all printing is completed, the fixed roll attached to the frame is fixed. The blade is cut by sliding a substantially V-shaped movable blade having a concave center on the blade. Then, a paper guide is provided above the fixed blade so that the roll paper is smoothly fed out, and the leading end thereof hits the paper guide when the roll paper is fed out.

[0003]

A gap is provided between the paper guide and the fixed blade so that the movable blade can slide. On the other hand, in recent years, in order to suppress the generation of waste materials due to environmental problems and the like, a coreless type roll paper which does not have a core material and allows the roll paper to be used up to the last part is often used, In the case of paper, when the paper is fed out due to the tight curl of the center, the leading end may enter the gap between the paper guide and the fixed blade, causing paper jam. In view of the above problems, an object of the present invention is to provide a roll paper cutter that does not cause a paper jam even when a roll paper having a tight curl like a coreless type is used.

[0004]

According to the first aspect of the present invention, there is provided a frame having a slit from which roll paper is discharged, and a frame on the roll paper discharge side of the frame on the roll paper curl side relative to the slit. And a fixed blade having a cutting edge at the upper edge of the slit side end, and after a predetermined amount of roll paper comes out, slides on the frame from the non-curl side of the slit roll paper to the curl side. A movable blade that cuts the roll paper in cooperation with the fixed blade, the central portion of which is recessed on the anti-curl side, and both wing portions protrude on the curl side.
After cutting, at least the movable blade whose central portion is stopped near the blade edge of the fixed blade, and above the fixed blade above the fixed blade on the side of the winding habit than the slit, And a paper guide plate, the lower end of which is separated from the fixed blade so that the movable blade can move. A roll paper cutter is provided, wherein an auxiliary guide for extension is attached, and the lower end of the auxiliary guide is substantially in contact with the upper surface of the fixed blade outside the movable range of the movable blade. In the roll paper cutter thus configured, the leading end of the roll paper discharged from the slit hits the auxiliary guide and does not enter between the fixed blade and the paper guide.

According to a second aspect of the present invention, there is provided the roll paper cutter according to the first aspect, wherein the auxiliary guide extends downward at the position of the paper guide plate. According to a third aspect of the present invention, there is provided the roll paper cutter according to the first aspect of the present invention, wherein the auxiliary guide is provided only at a central portion in the paper width direction.

According to a fourth aspect of the present invention, there is provided the roll paper cutter according to the first aspect of the present invention, wherein the lower end of the auxiliary guide projects toward the slit. In the roll paper cutter configured as described above, the leading end of the roll paper discharged from the slit hits the auxiliary guide earlier.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the auxiliary guide extends to both sides including the central portion in the paper width direction, and the lower end has a shape of a movable blade stopped after cutting the roll paper. There is provided a roll paper cutter protruding toward the slit side. In the roll paper cutter configured as described above, the leading end of the roll paper discharged from the slit hits the auxiliary guide immediately after being discharged from the slit.

According to a sixth aspect of the present invention, there is provided the roll paper cutter according to the first aspect, wherein the auxiliary guide is formed of a thin plate integrally formed with the paper guide plate. According to a seventh aspect of the present invention, there is provided the roll paper cutter according to the first aspect, wherein the auxiliary guide is formed separately from the paper guide plate, and then attached to the paper guide plate.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a side view for explaining a roll paper cutter according to the first embodiment. Referring to FIG. 1, a lower frame 1 and an upper frame 2 are provided with a gap therebetween. Is formed with a slit 3, and a paper guide 4 having the same shape as that of the related art is attached to the upper frame 2. An auxiliary guide 100 according to the present invention integrally formed with the paper guide 4 extends downward from the bottom of the paper guide 4, and its lower end extends until almost touching the upper surface of a fixed blade 10 described later.

[0010] A portion of the lower frame 1 on the right side of the slit 3 in the figure is slightly inclined downward in the figure, and a fixed blade 10 is attached to the inclined portion.
1 is flush with the right side surface 3a of the slit 3, and its upper edge 12 is formed sharply.

The movable blade 20 is moved left and right in the figure by a driving means (not shown).
The lower surface of the fixed blade 10 is in contact with the edge 12 of the fixed blade 10. FIG. 2 is a top view showing the relationship among the slit 3, the paper guide 4, the fixed blade 10, and the movable blade 20. As shown in FIG. 2, the movable blade 20 has a substantially V-shape with a concave center, small projections 21 provided at both ends, and small notches 22 provided at the center. Before cutting, the small protrusions 21 at both ends are fixed blades 1 as shown by solid lines in FIG.
At a position such that it is above zero, after cutting, it stops at a position where the central small notch 22 overlaps the slit 3 as shown by a dashed line in FIG. In FIG. 1, the movable blade 20
Indicates the small notch 22.

Returning to FIG. 1, below the lower frame 1, a coreless type roll R of roll paper P is held by, for example, a receiving member 30 having a V-shaped cross section as shown. The bold line indicates the last portion of the roll R currently in use, and the thin one-dot chain line indicates the initial roll R. From the roll paper P, a guide 31 and at least one of the guides 3
The paper is fed to a printing unit 34 by a pair of feed rollers 32 driven by the printer 3. The print unit 34 includes a printer 35 and a back plate 36 that supports the paper from behind during printing. The arrangement of the receiver 30 and the print unit 34 shown in FIG. 1 is merely an example, and various arrangements are possible. However,
In this case, the roll R needs to be arranged in a direction in which a clockwise curl is formed.

Next, the operation of the device configured as described above will be described. When the previous cutting is completed, the roll paper P is stopped with its leading end in contact with the edge 12 of the fixed blade 10 as shown by a thick solid line, and the movable blade 20 is moved to the standby position on the left side of the slit 3. I have. In this state, the current printing is started by the printer 35 of the printing unit 34 in cooperation with the back plate 36.

When printing of one line is completed, the feed roller 32 feeds the roll paper by one line. When printing of several lines is completed, the end of the coreless roll paper P has a strong curl, and the leading end of the roll paper P wraps around clockwise strongly. To the gap A between the lower frame 1 and the upper frame 2 to prevent paper jam.

When the required amount of printing is completed, for example, the roll paper P is stopped in the state shown by the thick dashed line. Then, although the movable blade 20 moves rightward in the figure and the roll paper P is cut, the cut portion 22 provided at the center of the movable blade 20 does not cut the center portion but is connected to a subsequent portion. , Is prevented from being blown off by wind or the like. In the case of complete cutting without connecting to the subsequent part as described above, the cut 2 of the movable blade 20 is used.
The movable blade 20 may be moved until 2 is on the right side of the slit 3 in the drawing, or the cut 22 may not be provided in the movable blade 20. In FIG. 2, the position indicated by the thick solid line is the position of the leading end of the roll paper before printing. FIG. 3 is a perspective view showing the part of FIG.

Next, a second embodiment will be described with reference to FIG. 4 which is a perspective view similar to FIG. In the second embodiment, as shown in FIG.
10 is different from the first embodiment in that it is made separately and attached to the paper guide 4, but the other points are the same as those of the first embodiment, and the operation and effects are the same as those of the first embodiment. It is the same as the form.

Next, a third embodiment will be described. FIGS. 5, 6, and 7 show the third embodiment in a side view, a partial top view, and a partial perspective view, respectively, in which the auxiliary guide 120 does not hinder the movement of the movable blade 20. , And the roll paper P coming out of the slit 3 hits the auxiliary guide 120 earlier, so that the occurrence of paper jam can be more reliably prevented. In addition,
The auxiliary guide 120 of the third embodiment can also be made separately.

Next, a fourth embodiment will be described. 8, 9, and 10 show the fourth embodiment in a partial perspective view, a side view, and a partial top view, respectively.
The auxiliary guide 130 is formed three-dimensionally by a separate member, the lower side of which is narrowed, and the tip of the movable blade 20 extends to the vicinity of the notch 22 of the movable blade 20 within a range that does not hinder the movement of the movable blade 20. . Therefore, the roll paper P coming out of the slit 3 is immediately guided by the auxiliary guide 130, and the occurrence of paper jam can be more reliably prevented.

Next, a fifth embodiment will be described. FIGS. 11 and 12 show the fifth embodiment in the same manner as the partial perspective view and the partial top view, respectively. The auxiliary guide 140 is formed three-dimensionally by a separate member, and the first to fourth embodiments are different. It is extended in the lateral direction, while only the central portion is provided. Therefore, the roll paper P coming out of the slit 3 is immediately guided not only at the center part but also at the side parts by the auxiliary guide 140, and the occurrence of paper jam can be more reliably prevented.

[0020]

According to the roll paper cutter of the present invention, there is provided a frame having a slit from which the roll paper is discharged, and a frame on the roll paper discharge side of the frame closer to the curl side of the roll paper than the slit. A fixed blade having a cutting edge provided at the upper edge of the slit side end, and sliding the paper on the frame from the non-curl side of the slit roll paper to the curl side after a predetermined amount of the roll paper is discharged. A movable blade that moves and cooperates with the fixed blade to cut the roll paper, the central portion of which is concave toward the anti-curl side, and both side wing parts have a substantially V-shape protruding toward the curl side; After cutting, at least the movable blade whose central part is stopped near the blade edge of the fixed blade, and on the winding habit side than the slit, so as to extend upward with respect to the frame above the fixed blade over the fixed blade. The movable blade is movable A sheet guide plate is spaced from the fixed blade so that, although those having, in the paper guide plate,
An auxiliary guide extending downward from the lower end of the paper guide plate is attached, and the lower end of the auxiliary guide is configured to substantially contact the upper surface of the fixed blade outside the moving range of the movable blade. In the final part of coreless type roll paper, which has strong curl,
Paper jam can be prevented without entering between the fixed blade and the paper guide. As a result, the use of coreless type roll paper is promoted, which can contribute to resource saving and garbage saving. In particular, since the lower end of the auxiliary guide protrudes toward the slit side, the leading end of the roll paper discharged from the slit hits the auxiliary guide earlier, and the paper jam can be more reliably prevented. In particular, according to claim 5,
The auxiliary guide extends to both sides including the central part in the paper width direction, and the lower end protrudes toward the slit side along the shape of the movable blade stopped after cutting the roll paper, so the leading edge of the roll paper discharged from the slit Immediately hits the auxiliary guide immediately after being discharged from the slit over a wide width, and paper jam can be more reliably prevented.

[Brief description of the drawings]

FIG. 1 is a side view of a first embodiment.

FIG. 2 is a partial top view of the first embodiment.

FIG. 3 is a partial perspective view of the first embodiment.

FIG. 4 is a partial perspective view of the second embodiment.

FIG. 5 is a side view of the third embodiment.

FIG. 6 is a partial top view of the third embodiment.

FIG. 7 is a partial perspective view of the third embodiment.

FIG. 8 is a partial perspective view of the fourth embodiment.

FIG. 9 is a side view of the fourth embodiment.

FIG. 10 is a partial top view of the fourth embodiment.

FIG. 11 is a partial perspective view of the fifth embodiment.

FIG. 12 is a partial top view of the fifth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Lower frame 2 ... Upper frame 3 ... Slit 4 ... Paper guide 10 ... Fixed blade 20 ... Movable blade 30 ... Receiving part 34 (of the roll of roll paper) 34 ... Printing part 100, 110, 120, 130, 140 ... Auxiliary guide P ... Roll paper

Claims (7)

[Claims] A frame having a slit through which the roll paper is discharged; and a frame disposed on the roll paper discharge side of the frame on a frame closer to the curl side of the roll paper than the slit, and an upper edge of an end on the slit side. After the roll paper is discharged from the slit by a predetermined amount, the roll paper slides on the frame from the non-curl side of the roll paper to the curl side of the slit and cooperates with the fixed blade to form the roll paper. A movable blade that cuts off, the central portion is recessed on the anti-curl side, and both side wing portions have a substantially V-shape protruding on the curl side. After cutting, at least the central portion is a fixed blade. A movable blade that is stopped near the blade edge; and a winding blade that is disposed above the fixed blade and extends upward with respect to the frame above the fixed blade on the winding habit side than the slit so that the movable blade can move at the lower end. Is separated from the fixed blade A roll paper cutter having a paper guide plate, wherein an auxiliary guide extending downward from the lower end of the paper guide plate is attached to the paper guide plate, and the lower end of the auxiliary guide is formed on the upper surface of the fixed blade outside the movable range of the movable blade. A roll paper cutter characterized by being in contact with the roll paper cutter. 2. The roll paper cutter according to claim 1, wherein the auxiliary guide extends downward at the position of the paper guide plate. 3. The roll paper cutter according to claim 1, wherein the auxiliary guide is provided at a central portion in the paper width direction. 4. The cutter according to claim 1, wherein a lower end of the auxiliary guide projects toward the slit. 5. An auxiliary guide extending to both sides including a central portion in a paper width direction, and a lower end protruding toward a slit along a shape of a movable blade stopped after cutting the roll paper. Item 2. A cutter according to item 1. 6. The cutter according to claim 1, wherein the auxiliary guide comprises a thin plate formed integrally with the paper guide plate. 7. The cutter according to claim 1, wherein the auxiliary guide is formed separately from the paper guide plate, and then attached to the paper guide plate.