JPH074149Y2 - Sheet body cutting device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device for cutting a longitudinal sheet body such as roll paper for printers, facsimile receivers, copiers and the like.

PRIOR ART A typical prior art is shown in FIG. Recording paper, which is roll paper, is conveyed in the direction of arrow 2 on the conveyance path 1,
After passing between the upper and lower guide members 3 and 4, the blade is sheared and cut by the fixed blade 5 provided at a fixed position and the movable blade 7 angularly displaced around the rotation axis 6, and extends downstream of the fixed blade 5 in the transport direction. Stacked on the part 5a and the tray 8 as indicated by reference numeral 9.

In the prior art shown in FIG. 14 as described above, the trailing edge of the cut and stacked recording paper 9 leans against the rising portion 5b of the fixed blade 5, so that when the number of stacked papers increases, the recording papers The rear end portion of the trailing edge projects above the fixed blade 5, and paper jams easily occur.

In order to prevent such a paper jam, the rear end of the stacked recording papers 9 is set to the rising edge 5b of the fixed blade 5.
It is necessary to consider the inclination angle of the tray 8 and the traveling angle of the recording paper conveyed along the conveying path 1 as indicated by the arrow 2 so as not to lean against the design.
Therefore, there is a problem that the degree of freedom in design is small.

Furthermore, in the prior art shown in FIG. 14, the detection element 1 for detecting the recording paper conveyed between the guide members 3 and 4 is used.
0 is arranged below the guide member 4, so that the length 1 along the conveying direction for cutting increases, the structure becomes large, and a large mounting space is required.

A first object of the present invention is to provide a sheet body cutting device which is capable of eliminating paper jams, increasing the degree of freedom in design, and reducing the size.

FIG. 15 is a simplified cross-sectional view of another prior art. The roll-shaped recording paper 11 passes through the space 15 in a state where the fixed blade 12 and the movable blade 14 which is angularly displaced like the arrow 13 are separated from each other,
Be transported. A discharge guide member 16 is provided on the downstream side of the movable blade 14 for the purpose of improving safety in order to prevent an operator's hand or the like from getting in and getting injured.

According to the prior art shown in FIG.
As shown in FIG. 2B, the recording paper 11 has entered the gap between the movable blade 14 and the discharge guide member 16 as shown by the reference numeral 17, or the recording paper 11 has the reference numeral 18 again.
As shown in (4), it may be conveyed and may hit the discharge guide member 16. Therefore, the recording paper 11 may not be reliably ejected in a normal state as indicated by the reference numeral 19, and the recording paper has a poor flow. Further, the provision of the discharge guide member 16 results in an increase in the number of parts.

A second object of the present invention is to provide a sheet body cutting device capable of reliably conveying the sheet body and reducing the number of parts.

FIG. 16 is a simplified sectional view of still another prior art. In this prior art, the recording paper conveyed in the conveying path 21 is conveyed by a pair of feed rollers 22, 23, guided by upper and lower guide members 24, 25, and has a fixed blade 26 and a movable blade 27 which is angularly displaced. Pass through the space between as indicated by reference numeral 28. In the prior art, the combination of the guide members 24, 25, and the combination of the fixed blade 26 and the movable blade 27 are independent of each other, each of these combinations, the printer,
It is attached to the main body of a sheet processing apparatus such as a facsimile receiver and a copying machine. Therefore, the guide members 24, 25
The positional relationship between the fixed blade 26 and the movable blade 27 tends to vary. For example, the guide members 24 and 25 are separated from the fixed blade 26 and the movable blade 27 in the front and rear in the transport direction, and
The chart paper will
Proceeding like a, 29b and 29c, the fixed blade 26 and the movable blade 27 collide with each other to cause a paper jam.

A third object of the present invention is to provide a sheet body cutting device which reliably conveys a sheet body and prevents paper jams without making the mounting position of parts highly accurate.

FIG. 17 is a simplified sectional view of still another prior art. The thermal recording paper 31 is heated and printed between the platen 32 and the thermal head 32, passes between the upper and lower guide members 34, 35, and is separated from the fixed blade 36 and the movable blade 37 driven by angular displacement. It is guided between the pair of upper and lower discharge rollers 41, 42 through the space 38 and further through the upper and lower guide members 39, 40. The recording paper is discharged from the discharge port 44 of the main body 43, which is the cabinet of the sheet processing apparatus, by the discharge rollers 41 and 42. The movable blade 37 is angularly displaced like an arrow 45 to cut the roll-shaped recording paper. After the final recording of one page is completed in this way, the movable blade angularly displaces in the direction of arrow 45 as described above to cut the recording paper, and the main body 43 is discharged by the discharge rollers 41 and 42.
And the recording of one page is completed. This operation is repeated when a large number of pages are recorded.

In the prior art shown in FIG. 17 as described above, after the recording paper passes near the movable blade 37, the recording paper is directed toward the contact position 46 of the pair of discharge rollers 41, 42, and the recording paper is guided as described above. Therefore, a pair of upper and lower guide members 39, 40 are required. When designing the upper guide member 39, the broken line
The route indicated by 47 is assumed. In order not to obstruct the traveling path 47 of the recording paper, the end portion 48 of the guide member 39 on the upstream side in the transport direction is determined. There is a large vertical distance from the end portion 48 to the contact position 46. Therefore, in order to smoothly guide the recording paper to the contact position 46, it is required that the upper guide member 39 is inclined at a gentle angle. Normally, it is necessary that the angle θ1 is at most about 45 ° or less. The more the angle θ1 is the argument, the smoother the guide sheet can be guided to the contact position 46 along the guide member 39. However, if the angle θ1 is increased in this way, the length l2 of the guide member 39 along the transport direction must be increased. Therefore, the structure becomes large.

An object of the present invention is to provide a sheet processing apparatus, such as a printer, a facsimile receiver and a copying machine, which has a compact structure and is capable of smoothly discharging the sheet.

Still another prior art will be described. FIG. 18 is a front view of a conventional sheet body cutting device as viewed along the conveying direction. The fixed blade 50 and the movable blade 51 are the blades 5 in order to ensure good cutting performance when shearing and cutting the recording paper.
The intervals b1 and b2 in the separated state of 0 and 51 are different from each other in the width direction of the recording paper, that is, in the direction perpendicular to the conveying direction of the recording paper. In FIG. 18, b1> b2. In order to convey the recording paper into the space 52 between the fixed blade 50 and the movable blade 51, which are separated from each other, a pair of upper and lower guides are provided upstream of them as shown in FIG. 19 (1). The members 53 and 54 are provided, or a pair of upper and lower guide members 55 and 56 are provided as shown in FIG. 19 (2). Record paper 5
Transported as shown at 7,58.

In the prior art shown in FIG. 18 and FIG. 19 as described above, (I) stabilization of running guide property of recording paper and (II)
It is difficult to satisfy both of the requirements for ensuring good paper jam removal, and to establish both, the guide members 53, 54;
It is necessary to increase the dimensional accuracy such as 5,56. To stabilize and improve the guide performance of the recording paper, refer to Fig. 19 (1).
Also, the distances a1 and a2 shown in FIG. 19 (2) may be reduced to reduce the distance between the guide members 53 and 55 and the movable blade 51. However, if this is done, when a paper jam occurs, It becomes difficult to remove the recording paper, and the paper jam removing property is impaired. On the contrary, in order to secure good paper jam removing property, it is sufficient to increase the intervals a1 and a2, but doing so impairs the stability of the running guide property of the recording paper. Downstream of the guide members 53, 55 in the recording paper conveyance direction (the right end of FIG. 19 (1) and FIG. 19 (2))
Extends perpendicularly to the paper surface of FIGS. 19 (1) and 19 (2). In such a prior art, the intervals a1, a
2 must be set accurately, and therefore high dimensional accuracy is required, and accordingly, the degree of freedom in design is small, which hinders simplification of the component structure and cost reduction measures.

A fifth object of the present invention is to smoothly guide the sheet body without needing to improve the dimensional accuracy unnecessarily, and to easily remove the sheet body having the paper jam even if the paper jam occurs. (EN) Provided is a sheet body cutting device which can be removed.

Means for Solving the Problems The present invention provides a cutting blade of a fixed blade and a cutting blade of a movable blade which are inclined with respect to each other when viewed along the conveyance direction of the sheet body, and cuts the sheet body of the fixed blade. A pair of guide members for guiding the sheet body in a space in which the cutting blade of the movable blade is separated from the cutting blade of the movable blade,
In the sheet cutting device disposed upstream of the fixed blade and the movable blade, the guide member extends downstream in the transport direction on the side where the distance between the fixed blade and the movable blade is small. A sheet cutting device having a guide protrusion that is adjacent to the cutting edge.

According to the present invention, the pair of guide members are arranged on the upstream side of the fixed blade and the movable blade, and the sheet body is provided in the space in the state where the cutting blade of the fixed blade and the cutting blade of the movable blade are separated from each other. At this time, the two cutting edges are inclined with respect to each other when viewed along the transport direction of the sheet body, that is, from the upstream side in the transport direction or the downstream side in the transport direction. In order to make the cutting smooth, the guide member is provided with a guide protrusion extending on the downstream side in the transport direction and close to the cutting edge on the side where the distance between the cutting edges is small. Therefore, it is not necessary to pay much attention to other dimensional accuracy only by accurately positioning the guide protrusion. Therefore, it is possible to easily achieve both the stability of the traveling guide property of the sheet body and the securement of the good removability of the sheet body having the paper jam. As a result, it becomes unnecessary to make the dimensional accuracy of the components particularly severe. Since the dimensional accuracy does not have to be high in this way, it is possible to use other parts as the guide member.
By doing so, the number of parts can be reduced.

Embodiment FIG. 1 is a partial sectional view of an embodiment of the present invention. In a recording sheet processing apparatus such as a printer, a facsimile receiver, and a copying machine, which is a sheet body, the recorded recording sheet is conveyed from a conveyance path 61 as indicated by an arrow 62, and a fixed blade 63 and a movable blade are used. It is stacked as shown by reference numeral 66 on a tray 65 which is inclined with respect to the horizontal and forms an angle .theta.2 with respect to the horizontal line. The fixed blade 63 is provided at a fixed position of the processing apparatus main body, that is, the machine body, and the blade 67 and the blade
67 has a support member 68 that is fixed and supports the blade 67,
The cutting edge 68 of the blade 67 is above the transport path 61 and in the transport direction.
It faces the upstream side (left side of Fig. 1). The movable blade 64 is
It has a blade 69 and a support member 70 for supporting the blade 69, and the cutting blade 71 faces the downstream side (right side in FIG. 1) in the transport direction 62. The movable blade 64 is angularly displaceable around a rotation axis 72 extending in a horizontal direction perpendicular to the carrying direction 62 (a direction perpendicular to the paper surface of FIG. 1). The movable blade 64 can be reciprocally displaced about the axis 72 by using a crank mechanism that converts the rotational power of the motor into a linear motion. Also this movable blade 64
May be angularly displaceable by the power of the motor.
The recording paper is sheared and cut by the cutting blades 68 and 71 in the width direction. The angular displacement direction of the movable blade 64 is indicated by reference numeral 73. In order to guide the recording paper on the transport path 61, the transport path 61
A guide member 74 is arranged above the blade and faces the blade 69. The guide member 74 is fixed to the movable blade 64 at a position avoiding the recording paper conveyance path 61, and the guide member 74 is integrated with the movable blade 64. Angular displacement. Furthermore, a recording paper detection element 76 for detecting whether or not recording paper exists in the space 75 between the movable blade 64 and the guide member 74 is fixed to the movable blade 64 below the movable blade 64. . Since the detection element 76 is provided below the movable blade 64, the installation space does not increase.

In this way, according to the embodiment shown in FIG. 1, the recording paper cut by the fixed blade 63 and the movable blade 64 is stored in the tray.
Even if the number of recording papers stacked on top of each other is large, the trailing edge 66a does not project upward as in the prior art described with reference to FIG. Does not occur and the so-called stacker property is improved. As a result, design restrictions such as the installation angle θ2 of the tray 65 and the traveling angle of the recording paper conveyed on the conveyance path 61 are largely eliminated, and the degree of freedom in design is increased.
Furthermore, with such a configuration, the mounting space only needs to have a length l3 along the transport direction 62, which is significantly larger than the prior art described with reference to FIG. 14 described above. Space saving can be achieved.

FIG. 2 is a simplified sectional view of the embodiment of the present invention, and FIG. 3 is a further simplified sectional view for explaining the operation thereof. With reference to these drawings, the recording paper is the transport path.
81 is conveyed in the direction of arrow 82, a fixed blade 83 is provided below the conveyance path 81, and a movable blade 84 is provided above it. The movable blade 84 is provided so as to be angularly displaceable as indicated by an arrow 85, and the movable blade 84 is driven to be angularly displaced by the angular displacement drive means, so that the movable blade 84 is conveyed between the fixed blade 83 and the movable blade 84. The recording paper on the path 81 is sheared and cut. Below the transport path 81, a guide member 86 for guiding the recording paper is provided.

The movable blade 84 includes a blade 88 having a cutting blade 87 and a support member 89 that supports the blade 88. The support member 89 includes a first guide portion 90 extending from the cutting edge 87 of the blade 88 to the downstream side in the transport direction 82,
The second guide portion 91 extends upward from the downstream end 90a of the first guide portion 90. In the state shown in FIGS. 2 and 3, the movable blade 84 is in a rest state, and in this state the fixed blade 84
The recording paper can be conveyed between the 83 and the movable blade 84.
The support member 89 includes the first and second guide portions 90, 9 as described above.
Since 1 is bent at an approximately right angle into an L-shape, it is easy to manufacture. Therefore, the recording paper passing through the transport path 81 between the fixed blade 83 and the movable blade 84 is
As in the prior art shown in FIGS. 16 and 17, there is no risk of the recording paper hitting the constituent elements or getting into the gaps, smooth conveyance becomes possible, and paper jams can be prevented. The bent portions 90b outward of the first and second guide portions 90 in the radial direction are rounded in a plane parallel to the transport direction 82, whereby the recording paper can be transported more smoothly, and Ends 91a, 91b of the second guide portion 91
Are formed rounded in a plane parallel to 82 in the transport direction. Therefore, as shown in FIG. 3, the recording paper 93 passes between the fixed blade 83 and the movable blade 84, and is guided to the downstream side as indicated by reference numeral 94 or as indicated by reference numeral 95. It is possible to improve the flow of recording paper.

FIG. 4 is an exploded perspective view of the embodiment of the present invention, and FIG. 5 is a simplified sectional view of the whole. In the cutting device 100, a fixed blade 104 having a blade 102 and a support member 103 is arranged below the transport path 101, and a movable blade 107 including a blade 105 and a support member 106 supporting the blade 105 is arranged above the fixed blade 104. It The supporting member 103 of the fixed blade 104 is the main body 10 of the present cutting device.
It is fixed at 8. The support member 106 of the movable blade 107 is provided around the rotating shaft 109 so as to be angularly displaceable. The movable blade 107 is driven by the angular displacement driving means in order to shear and cut the recording paper conveyed through the conveyance path 101.

On the upstream side (the left side in FIGS. 4 and 5) of the recording paper in the conveying direction of the fixed blade 104 and the movable blade 107, the blade 1 of the fixed blade 104 is provided.
A pair of guide members 111 for guiding the recording paper into a space 110 separated from the cutting blade 108 of 02 and the cutting blade 109 of the cutter 105 of the movable blade 107, and a guide member 112 are arranged above and below the transport path 101. To be done. The upper guide member 111 is the first member facing the transport path 101.
It has a guide portion 111a and a second guide portion 111b that rises on the downstream side (right side in FIGS. 4 and 5) thereof. The other guide member 112 has a first guide portion 112a extending along the transport path 101, and a second guide portion 112b extending downward on the downstream side thereof. The recording paper is conveyed between the guide members 111 and 112 by a pair of upper and lower feed rollers 114 and 115.

FIG. 6 (1) is an enlarged cross-sectional view in the vicinity of one end of the guide members 111, 112 in the width direction (the diagonal left-right direction in FIG. 4, the direction perpendicular to the paper surface of FIG. 5). On one side wall 119 of the main body 118,
A mounting hole 120 is formed. In the mounting hole 120, the end portion 111 of the guide member 111 that protrudes outward of the first guide portion 111a is formed.
And the end 112c of the other guide member 112 protruding outward from the first guide portion 112a. First guidance section 111a
End portion 111c of the end portion is formed to protrude toward the end portion 112c and bent only once or a plurality of times (2 in this embodiment).
As a result, the gap d1 that forms the transport path 101 between the first guide portions 11a and 112a is formed.

FIG. 6 (2) is an enlarged cross-sectional view near the other ends of the guide members 111 and 112. The first guide portion 111a has an end portion 111b that is bent toward the other first guide portion 112a once or a plurality of times (two in this embodiment). Further, the other first guide portion 112a has an end portion 112b protruding outward similarly to the end portion 111b. Bolt insertion holes 113 and 114 through which the bolt 122 is inserted are formed in these end portions 111b and 112b. The bolt 112 is mounted on the main body 118 integrally with the mounting portion 11.
5 is screwed into the screw hole 116.

In this way, the fixed blade 104 is fixed and the movable blade 1
A pair of upper and lower guide members 111 and 112 are fixed to a main body 118 to which 07 is attached so as to be angularly displaced, and by this, the positional relationship among these constituent elements, namely, the fixed blade 104, the movable blade 107, and the guide members 111 and 112. Can be mounted in a stable manner, which stabilizes the transportability of the recording paper and prevents the recording paper from jamming.

FIG. 7 is a sectional view of an embodiment of the present invention. In the transport path 132 between the platen 130 which is driven to rotate and the thermal head 131, the thermal recording paper is transported as indicated by an arrow 133, which further passes between the pair of upper and lower guide members 134 and 135, and the fixed blade 136. It passes through a space separated from the movable blade 137 and the cutting blades 138 and 139, and is discharged to the outside from a discharge port 141 formed in the main body 140 of the present recording paper processing apparatus. The processing device may be, for example, a printer, a facsimile receiver, a copier, or the like. Thus in the housing 140,
A cutting device 142 including a fixed blade 136 and a movable blade 137 is incorporated.

The movable blade 137 includes a blade 143 having a cutting edge 139 and a support member 144 that supports the blade 143. The support member 144 is a blade
It has a mounting portion 145 to which 143 is fixed, and a guide portion 146 that extends downstream from the mounting portion 145 in a direction away from the transport path. The recording paper 148 includes a cutting blade 138 of the fixed blade 136 and a movable blade 137.
It is sheared and cut in the width direction by the cutting blade 139 formed on the blade 143. The movable blade 137 is angularly displaced by an angular displacement driving means around a rotation axis 149 perpendicular to the paper surface in FIGS. 7 and 8 of the transportation path 132, which is perpendicular to the transportation direction 133, thereby cutting is performed. . After the final recording for one page of the recording paper is completed, the movable blade 137 is angularly displaced and moved as indicated by an arrow 150, whereby the recording paper is cut and the trailing edge of the recording paper is fixed by the fixed blade 136. It is dropped onto the discharge guide member 150 that is being discharged, and is discharged from the discharge port 141. When many pages are recorded, such an operation is repeated. In this embodiment, the discharge rollers 41 and 42 described with reference to FIG. 17 are not provided, so that the structure can be simplified. By omitting the discharge rollers 41 and 42, the upper and lower opening distance d2 of the discharge port 141 can be maximized within a predetermined safety standard allowable range.
As a result, the recording paper ejected through the fixed blade 136 and the movable blade 137 is transferred to the paper ejection roller described with reference to FIG.
It is no longer necessary in this embodiment to guide and eject towards the contact position 46 of 41, 42, and thus the above-mentioned 17th
The guide member 39 shown in the figure can be omitted, and the length along the transport direction 133 can be shortened to achieve miniaturization.

When cutting the recording paper 148, the cutting width is not cut at once, but the cutting torque is concentrated from one end to the other end in the width direction, and the cutting position by the cutting blades 138, 139 is moved in the width direction in the width direction. While making the cut, the smooth cut is performed. Therefore, the cutting edge 139 of the movable blade 137 is inclined with respect to the rotation axis 149, and in FIGS. 7 and 8, the cutting edge 139 is close to the cutting edge 138 on the front side and cuts on the rear side. It is inclined so as to be separated from the blade 138.

The recording paper 148 guided by the guide members 134, 135 is guided by these cutting edges 138, 139 and thus the recording paper 1
48 also tilted along cutting edge 139
It is transported through the spaces separated by 38 and 139. In order not to interfere with the conveyance of the recording paper 148, the discharge guide member 1 facing the discharge guide member 150 and arranged above.
52 needs to be configured.

FIG. 9 is a plan view of the discharge guide member 152, and FIG. 10 is a sectional view taken along the section line XX in FIG. The discharge guide member 152 is provided on the housing 14 above the discharge port 141.
Fixing part 154 fixed to 0 part with screws 153 etc.
A hanging portion 155 extending downward from the fixing portion 154, a rising portion 156 which is continuous with the lower end portion of the hanging portion 155, and extends obliquely upward and upward in the transport direction 133, and the rising portion 156.
Has a first guide portion 157 that extends in the vertical direction from the upper end portion and a second guide portion 158 that extends along the rising portion 156.
The first guide portion 157 corresponds to the one having a smaller spacing when the cutting blades 138, 139 are separated from each other, and the second guide portion 158 corresponds to the cutting blade 138, 1
Corresponds to the larger spaced end of 39. Since the first guide portion 157 rises in the vertical direction, the portion of the recording paper 148 that is inclined downward can be smoothly guided and run. In addition, the second guide 15
Reference numeral 8 is obliquely inclined, which allows the upwardly inclined portion of the recording paper 148 to be smoothly guided and run. A notch 160 is formed at the boundary between the first and second guide portions 157 and 158, so that the first and second guide portions 157 and 158 can be accurately formed. Regarding the position of the notch 160, the portion of the recording paper 148 passing near the notch 160 is the first and second guide portions 157 and 158.
In any part of the above, a position in the width direction where the guide is smoothly guided and passed is selected, and in this embodiment, the notch 160 has the cutting edge 13
It is provided near the large gap of 8,139. Second guide 157
A static elimination brush 161 having flexibility is attached so as to face the upstream side in the transport direction 133, and the static elimination brush 161 contacts the recording paper 148 to charge the recording paper 148. Is configured to escape through the metal discharge guide member 152. The screw 153 is a mounting hole 163 formed in the fixing portion 154.
And is screwed to the mounting protrusion 164 of the housing 140.
The cutting start position of the cutting blade 139 is indicated by reference numeral 139a, and the cutting end position is indicated by reference numeral 139b.

FIG. 11 is a perspective view of the embodiment of the present invention, and FIG. 12 is a simplified plan view of the embodiment shown in FIG.
FIG. 13 is a simplified side view of the embodiment shown in FIGS. 11 and 12. Each cutting edge 172 of the fixed blade 170 and the movable blade 171,
Between the 173, a pair of upper and lower guide members 174 and 175 are provided in the conveying direction 176.
Along which the cutting blades 172 and 173 are separated from each other. The movable blade 171 is angularly driven about the rotation axis perpendicular to the transport direction 176 (the horizontal direction in FIG. 12 and the direction perpendicular to the paper surface in FIG. 13), whereby cutting is performed between the cutting blades 172 and 173. In order to smoothly cut this recording paper, the cutting blade 173 is inclined with respect to the rotation axis of the movable blade 171, and the position of the cutting start is indicated by reference numeral 173a.
The end position is indicated by reference numeral 173b. Cutting edge 172,17
In the state where 3 is separated, the distance between the cutting edge 172 and the cutting start position 173a is indicated by reference numeral b3, and the cutting edge 172 and the cutting end position 173b.
The distance between and is indicated by the reference sign b4 (b3 <b4).

The guide members 174 and 175 are arranged upstream of the fixed blade 170 and the movable blade 171. The cutting edge 172 of the fixed blade 170 extends horizontally, and the guide members 174 and 175 are parallel to the cutting edge 172. In this embodiment, the upper guide member 174 is the cutting start end of the cutting blade 173.
The cutting edge 173 extends toward the downstream side in the transport direction 176, and is closer to the 173a side.
Has a guide protrusion 178 close to. Therefore, the position of the guide protrusion 178 is accurately configured and positioned so that the recording sheet conveyed in the conveying direction 176 is smoothly conveyed and guided between the separated cutting blades 172 and 173. However, it is not necessary to unnecessarily improve the positioning accuracy of the remaining portion of the guide member 174 other than the guide protrusion 178. In particular, since the distance a2 between the guide protrusion 178 and the cutting edge 173 can be made small, it is possible to favorably stabilize the traveling guide property for guiding the recording sheet between the cutting edges 172 and 173. Moreover, the distance a3 between the cutting edge 173 and the portion 179 of the guide member 174 where the guide protrusion 178 is not formed is relatively large. Therefore, even if a paper jam occurs, the recording paper jammed will occur. It is possible to easily remove the paper jam, and it is possible to secure good paper jam removal performance. Since it is not necessary to make the dimensional accuracy of the guide member 174 particularly severe, the guide member 174 has the function of guiding the recording paper, and
It can also be used as a component that achieves other functions,
By doing so, the configuration can be simplified. The guide member 174 may be arranged so as to be inclined in parallel along the cutting edge 173 of the movable blade 171.

Although the guide protrusion 178 protrudes stepwise from the remaining portion 179, the guide protrusion 178 may be configured to protrude gradually, that is, at an angle.

FIG. 20 (1) is a perspective view of the discharge guide member 152.
The portion of the guide portion 157 to which the static elimination brush 161 (see FIG. 10 described above) is attached is shown by hatching.

FIG. 20 (2) shows another embodiment of the present invention, in which parts corresponding to those of the above-mentioned embodiment are designated by the same reference numerals. Droop 155
The angle θ11 between the rising portion 156 and the rising portion 156 is the same as that in FIG. 20 (1), but there is a difference in the length of the rising portion 156 like the lengths 11 and 21 and the difference in level between the left and right edges of the movable blade 137. I am responding, so
The paper is not caught.

FIG. 20 (3) is a perspective view of another embodiment of the present invention.
In this embodiment, the angle θ1 between the drooping portion 155 and the rising portion 156 is
There is a difference in 1, θ21, and it is twisted and has a spiral shape, so that it does not get caught on the paper as in FIG. 20 (2).

FIG. 20 (4) shows the discharge guide member 152 of FIG.
FIG. 6 is a perspective view showing a state in which the fixed blade 136 and the movable blade 137 are mounted in association with each other. In the configuration of FIG. 20 (3), it is difficult to control the processing accuracy and the cost increases. Since the left and right angles θ11 are constant in the configuration of FIG. 20 (2), there is no particular problem in production, but the configuration of FIG. 20 (1) looks like the shape at the right end of FIG. 20 (2). 11 and θ11 are the same, but the first guide
157 is provided so that the static elimination brush 161 can be attached.

Advantageous Effects of Invention According to the present invention, the traveling guideability of the sheet body such as the recording paper can be stabilized without unnecessarily increasing the accuracy of the pair of guide members for guiding the sheet body such as the recording paper,
It is possible to easily remove the recording paper that has caused the paper jam.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention, FIG. 2 is a simplified sectional view of an embodiment of the present invention, and FIG. 3 is a description of a recording paper conveyance path 93 of the embodiment shown in FIG. 4 is an exploded perspective view of an embodiment of the present invention, FIG. 5 is a cross-sectional view of the embodiment shown in FIG. 4, and FIG. 6 is a cross-sectional view of the guide members 111, 112 in the width direction. FIG. 7 is an enlarged sectional view, FIG. 7 is a sectional view of an embodiment of the present invention, FIG. 8 is a perspective view of the movable blade 137 shown in FIG. 7, and FIG. 9 is a discharge guide member 152 shown in FIG. Fig. 10 is a plan view, Fig. 10 is a sectional view taken along the section line X-X in Fig. 9, Fig. 11 is a perspective view of an embodiment of the present invention, and Fig. 12 is a simplified view of the embodiment shown in Fig. 11. FIG. 13 is a side view of the embodiment shown in FIGS. 11 and 12, FIG. 14 is a sectional view of the prior art, FIG. 15 is a sectional view of the prior art, and FIG.
FIG. 15 is a sectional view for explaining the path of the recording paper of the prior art shown in FIG. 15, FIG. 17 is a sectional view of the prior art, and FIG. 18 is a fixed blade.
FIG. 19 is a front view of the movable blade 51 and the movable blade 51 as viewed along the conveying direction, FIG. 19 is a sectional view of the prior art, and FIG. 20 is a perspective view of an embodiment of the present invention. 61 …… transport path, 62 …… transport direction, 63 …… fixed blade, 64…
… Movable blade, 74 …… Guide member, 81… Transport path, 82… Transport direction, 83… Fixed blade, 84… Movable blade, 89… Support member, 90… First guide section, 91… … Second guide, 101 …… Transport path, 104 …… Fixed blade, 107 …… Movable blade, 111,112 ……
Guide member, 114,115 ... Feed roller, 118 ... Cutting device body, 132 ... Transport path, 133 ... Transport direction, 134, 135 ...
Guide member, 136 ... fixed blade, 137 ... movable blade, 140 ... housing, 141 ... discharge port, 150 ... discharge guide member, 152
…… Discharge guide member, 170 …… Fixed blade, 171 …… Movable blade, 17
4,175 …… Guiding member, 178 …… Guiding protrusion

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Takashi Shinohara 22-22 Nagaike-cho, Abeno-ku, Osaka-shi, Osaka Prefecture Sharp Corporation (72) Hiroshi Shirakoshi 22-22 Nagaike-cho, Abeno-ku, Osaka-shi, Osaka No. Sharp Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A cutting blade of a fixed blade and a cutting blade of a movable blade are provided so as to be inclined with respect to each other when viewed along a sheet conveying direction, and the sheet body is a cutting blade of a fixed blade and a cutting blade of a movable blade. In the sheet body cutting device, in which a pair of guide members for guiding the sheet body are arranged on the upstream side of the fixed blade and the movable blade in the space in the state of being separated from the guide member, the guide member is a cutting blade of the fixed blade. And a cutting blade of the movable blade, which has a guide protrusion that extends toward the downstream side in the transport direction on the side where the distance between the cutting blade and the cutting blade is small and that is close to the cutting blade.