JP3654344B2 - Cutter holder and ink jet recording apparatus provided with the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cutter holder used for cutting a roll paper portion after printing by, for example, an ink jet printer capable of printing on roll paper, and an ink jet recording apparatus including the cutter holder.
[0002]
[Prior art]
In an inkjet printer capable of printing on roll paper, a cutter holder having a rotary blade is used to cut a printed portion in the width direction of the roll paper to form a cut sheet after printing is completed.
[0003]
The cutter holder is configured to move in the width direction of the roll paper in order to cut the roll paper. However, since the cutter holder advances after passing the side of the cut roll paper after cutting the roll paper, when the cutter holder tries to return to the original position for the next cutting, the cutter holder There is a problem that the printed roll paper is bent by colliding with the side.
[0004]
In the conventional cutter holder, since the rotary blade acts from the printing surface side to cut the roll paper, the rotary blade acts and the rough cutting edge appears on the printing surface side, and the print quality is good. As a result, the quality of the printed material as a whole was inferior.
[0005]
Further, when a rotary roller is provided on the rotary blade and the cutter blade moves when the cutter holder moves in a state where the peripheral surface of the press roller is strongly pressed against the roll paper, a mechanism is adopted in which the rotary blade rotates along with the rotation of the press roller. When the roll blade is cut by operating the rotary blade from the printing surface side, there is a problem that the mark of the pressing roller remains on the printing surface and the printing quality is deteriorated.
[0006]
Furthermore, since the piece of roll paper cut by the rotary blade falls downward, when the drive belt for driving the cutter holder is positioned below the rotary blade, the piece of roll paper is caught by the drive belt, There was a problem that it might interfere with driving.
[0007]
[Problems to be solved by the invention]
Therefore, the problem of the present invention is to solve the problem that the cutter holder collides with the side of the cut roll paper and bends the printed roll paper, and the portion that has become rough due to the rotary blade acts. It is an object of the present invention to provide a cutter holder that cannot be seen from the printing surface side and that does not leave a mark of a pressing roller on the printing surface.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, a cutter holder according to claim 1 of the present application includes a rotary blade for cutting a roll paper having a coating layer on the printing surface side in the width direction, a rotary shaft of the rotary blade, A holder main body that rotatably supports the rotary shaft of the rotary blade, and the rotary blade provided concentrically with the rotary blade and adjacent to the rotary blade on the rear side in the roll paper traveling direction when viewed from the rotary blade. A pressing roller having a small diameter, and a support formed on the upper surface of the holder body, protruding forward in the roll paper traveling direction as viewed from the rotary blade, and formed on the rear side in the traveling direction when the holder body is cut And the rotary blade can be arranged so as to face from the non-printing surface side of the roll paper, and the support surface is viewed from the rotary blade when the roll paper is cut. It is characterized in that the unprinted side of the paper roll end of Lumpur paper traveling direction front side can be supported.
[0009]
According to the present invention, when the printed portion of the roll paper is cut with the rotary blade, the support surface can support the roll paper end on the rear side in the roll paper traveling direction as viewed from the rotary blade from the lower side. When the rotary blade moves in the width direction of the roll paper and the cutting is finished, the vicinity of the corner of the roll paper is placed on the support surface formed on the rear side in the traveling direction when the holder body is cut. When the cutter holder returns to its original position in preparation for cutting, it does not collide with the side of the roll paper and bend the corner of the roll paper.
[0010]
In addition, since such a support surface supports the back surface of the roll paper when the cutter holder moves, there is no fear of rubbing the print surface even when printing with a small margin (margin), and high-quality printing can be maintained.
[0011]
Furthermore, the pressing roller is strongly pressed against the roll paper and rotates due to the frictional force with the roll paper. As a result, the rotary roller is rotated, but the pressing roller is pressed against the non-printing surface of the roll paper. There is no trace left on the surface by the pressing roller.
[0012]
Furthermore, since the surface on which the rotary blade acts becomes the non-printing surface side of the roll paper, the portion that is in a rough state due to the rotary blade acts on the non-printing surface side of the roll paper, and the appearance of the printed matter is improved. .
[0013]
The cutter holder according to claim 2 of the present invention is the cutter holder according to claim 1, wherein a connecting portion is formed above the holder main body across the traveling path of the roll paper, and the connecting portion reciprocates in the paper width direction. Connection means for connecting to a movable drive transmission member is formed, and the holder main body and the coupling portion are integrally formed.
According to the present invention, since the connecting portion is formed above the holder main body, and the connecting portion can be connected to the drive transmission member, when the roll paper piece cut by the rotary blade falls, the roll paper piece It can be avoided that the drive transmission member is caught and hindered.
[0014]
Further, the cutter holder according to claim 3 of the present application is inclined obliquely to the front side in the direction in which the cutter holder advances when cutting the roll paper on the upper surface of the holder body in claim 1 or 2. A guide surface is formed, and a part of the rotary blade protrudes above the guide surface.
According to the present invention, the inclined structure of the guide surface can smoothly realize the cutting of the roll paper by the rotary blade and the placement of the cut paper on the support surface following the cutting.
[0015]
The cutter holder according to claim 3 of the present invention is characterized in that, in claim 1 or 2, the rotary blade is constantly urged against the pressing roller by urging means.
According to the present invention, when the cutter holder moves in the paper width direction of the roll paper while the peripheral surface of the press roller is pressed against the non-printing surface of the roll paper, the press roller rotates. At this time, since the rotary blade pressed against the pressing roller also rotates together, the roll paper can be cut in the paper width direction while the rotary blade rotates.
[0016]
An ink jet recording apparatus according to claim 4 of the present application includes the cutter holder according to any one of claims 1 to 3.
According to the present invention, since the cutter holder supports the back side of the roll paper during movement, there is no risk of rubbing the print surface even when printing with a small margin (margin), and high-quality printing equivalent to a photograph in an ink jet recording apparatus is possible. Can be maintained. In addition, since the pressing roller is pressed against the non-printing surface of the roll paper, the pressing roller does not come into contact with the printing surface, and there is no trace of being crushed by the pressing roller on the high-quality printing surface. . Further, since the surface on which the rotary blade acts is on the non-printing surface side of the roll paper, the portion that is in a rough state due to the rotary blade acts on the non-printing surface side of the roll paper, and the appearance of the printed matter is improved.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing the periphery of a paper discharge section in an inkjet printer capable of filling roll paper to which the cutter holder according to the present invention is applied, FIG. 2 is an enlarged perspective view of the cutter holder of the present invention, and FIG. 3 is a side sectional view of the cutter holder 4 is a cross-sectional view showing the periphery of the rotary blade, and FIG. 5 is an enlarged view of the periphery of the support surface showing a state immediately after the roll paper is cut with the rotary blade.
[0018]
In FIG. 1, reference numeral 1 denotes a cutter holder according to the present invention. The cutter holder 1 is a paper discharge portion of a roll paper ink jet printer, that is, a portion that discharges a roll paper of a printed portion after printing is completed by the ink jet printer. Provided on the base frame 3. The base frame 3 of the paper discharge unit has a plurality of paper discharge rollers 5 for applying a driving force for paper discharge to the roll paper (the paper discharge driven roller is not shown and only the paper discharge drive roller is shown). And an endless driving belt 7 for reciprocating the cutter holder 1 in the width direction of the base frame 3 is provided. Pulleys (not shown) are provided on the left and right sides of the endless drive belt 7. One end of the endless drive belt 7 can reciprocate to the left and right of the base frame 3 by being driven to rotate by a drive motor (not shown). ing. In FIG. 1, reference numeral 9 denotes a drive mechanism including a gear group for rotationally driving a paper discharge roller and the like.
[0019]
A fixed blade 11 extending in the width direction of the base frame 3 is provided in the base frame 3 below the endless drive belt 7. The fixed blade 11 is for shearing the roll paper R in cooperation with a later-described rotary blade provided in the cutter holder 1.
[0020]
As shown in FIG. 2, the cutter holder 1 includes a holder main body 13, and in the holder main body 13, as shown in FIG. 3, a rotary blade 15 and a position adjacent to the rear side in the roll paper traveling direction as viewed from the rotary blade 15. A pressing roller 17 is provided around the rotary shaft 19.
[0021]
A support surface 21 is formed on the upper surface of the holder body 13 on the rear side in the direction in which the cutter holder 1 advances when the roll paper R is cut. The support surface 21 is formed so as to protrude forward in the roll paper traveling direction when viewed from the rotary blade 15. By forming such a support surface 21 on the upper surface of the holder body 13, as shown in FIG. 5, when the rotary blade 15 moves in the width direction of the roll paper R and the cutting is finished, the corner of the roll paper R is finished. Since the vicinity of the portion Q is on the support surface 21, when the cutter holder 1 returns to the original position for the next cutting preparation, the cutter holder 1 collides with the side of the roll paper R and the roll paper R The corner Q is not bent.
[0022]
In addition, when the roll paper R is cut on the upper surface of the holder main body 13, an obliquely inclined guide surface 23 is formed on the front side in the direction in which the cutter holder 1 travels. A part of the rotary blade 15 protrudes above the guide surface 23. The protruding portion of the rotary blade 15 is disposed so as to face the non-printing surface side of the roll paper R. With the inclined structure of the guide surface 23, it is possible to smoothly realize the cutting of the roll paper R by the rotary blade 15 and the placement of the cut paper on the support surface 21 following the cutting.
[0023]
The rotary blade 15 has a circular shape with a blade formed around it, and the rotary blade 15 is constantly urged against the pressing roller 17 by a coil spring 25 provided on the rotary shaft 19. The pressing roller 17 is positioned concentrically with the rotary blade 15 and has a smaller diameter than the rotary blade 15. The pressing roller 17 is a member provided for rotationally driving the rotary blade 15 and is positioned so as to be pressed against the lower surface side of the roll paper R. When the cutter holder 1 advances in the width direction of the roll paper R, It can be rotated by friction between the peripheral surface of the pressing roller 17 and the lower surface of the roll paper R. Since the rotary blade 15 is urged by the pressing roller 17, when the pressing roller 17 rotates, the rotary blade 15 also rotates.
[0024]
As shown in FIGS. 2 and 3, a connecting portion 29 is formed above the holder main body 13 on the opposite side across the traveling path 27 of the roll paper R. The connecting portion 29 is a portion formed to connect to the endless driving belt 7. Specifically, the connecting portion 29 can be connected to the endless driving belt 7 side through a screw or rivet through a connecting hole 31 formed in the connecting portion 29. It has become.
[0025]
In the present embodiment, the holder main body 13 and the connecting portion 29 are connected by the portion where the support surface 21 of the holder main body 13 is formed, so that the entire cutter holder 1 can be integrally injection-molded. .
[0026]
Incidentally, a roll piece cut by the rotary blade 15 by adopting a configuration in which a connecting portion 29 is formed above the holder main body 13 and the connecting portion 29 can be connected to the endless drive belt 7 as in the present embodiment. When the paper drops, the problem that the roll paper piece is caught on the endless drive belt 7 and hinders can be avoided.
[0027]
The cutter holder 1 of the present invention has the configuration as described above, and the process of cutting the roll paper R after printing with the cutter holder 1 will be described below. The cutting of the roll paper R by the cutter holder 1 is more accurate so that the printed portion is cut leaving an appropriate margin (margin), and the printed material once cut in this way is, for example, zero (margin). In some cases, re-cutting may be performed at various positions. Here, the former cutting will be described in detail, and the latter cutting will be described supplementarily.
[0028]
First, in FIG. 1, after printing on the upper surface of the roll paper R, the printed roll paper R advances from the back side to the front side of the paper surface of FIG. 1. As described above, since the rotary blade 5 has the cutter holder 1 disposed so as to face the non-printing surface side of the roll paper R, in this embodiment, the printing surface on which the coat layer is formed is the roll paper R. It is the upper surface, and proceeds in a state where the non-printing surface is the lower surface of the roll paper R. When the roll paper R is conveyed by the paper conveyance means such as the paper discharge roller 5 to the margin area between the printing area to be cut this time and the next printing area, the driving of the roll paper R is stopped at that position, The endless driving belt 7 starts to be driven. Thereby, the cutter holder 1 connected to the endless driving belt 7 starts to move from the left side to the right side in FIG.
[0029]
At this time, since the peripheral surface of the pressing roller 17 is pressed against the non-printing surface (lower surface side) of the roll paper R, the pressing roller 17 rotates with the movement of the cutter holder 1 and is thereby urged by the pressing roller 17. The rotary blade 15 that is rotating advances in the width direction of the roll paper R, and the roll paper R can be sheared while cooperating with the fixed blade 11. As described above, in the present invention, since the circumferential surface of the pressing roller 17 presses the roll paper from the non-printing surface side of the roll paper, the press contact mark remains on the printing surface side or the printing surface is printed with a small margin (margin). There is no rubbing of ink. Further, since the surface on which the rotary blade 15 acts is the non-printing surface of the roll paper R, the portion that has become rough due to the shearing action of the rotary blade 15 and the fixed blade 11 becomes the non-printing surface side of the roll paper, and the printing surface Appearance when the printed material is viewed from the side is improved.
[0030]
When the entire width of the roll paper R is cut by the rotary blade 15, the movement of the cutter holder 1 is once finished, and the operation returns to the operation of returning to the original position in preparation for the next cutting. At this time, as indicated by an arrow 16 in FIG. 5, the cutter holder 1 moves in a direction opposite to the traveling direction at the time of cutting, but the corner Q serving as the rear end of the cut printed material is supported by the holder body 13. Since it is supported in a state of being placed on the surface 21, the cutter holder 1 is prevented from colliding with the side of the printed material and bending the printed material.
[0031]
In the present invention, the roll paper R and the support surface 21 are rubbed with the movement of the cutter holder 1 due to the provision of the support surface 21 as described above, but the surface rubbed with the support surface 21 is a non-printing surface of the roll paper. Therefore, the ink immediately after printing is not rubbed and the printed surface is not stained.
[0032]
On the other hand, there is a case where the printed portion is cut with an appropriate margin as described above, and then re-cut at a more accurate position so that the margin becomes 0, for example. The cutter holder 1 can be applied and cut. In this case, the elongated cut portion that is a margin portion to be cut off falls in a receiving box (not shown) located below the traveling path 27 of the roll paper R, but in the present invention, the holder main body 13 is sandwiched across the traveling path of the roll paper. Since the connecting portion 29 is formed above, it is possible to prevent the cut end from being caught by the endless drive belt 7 when dropped.
[0033]
【The invention's effect】
According to the present invention, when the printed portion of the roll paper is cut with the rotary blade, the support surface can support the roll paper end on the rear side in the roll paper traveling direction as viewed from the rotary blade from the lower side. When the rotary blade moves in the width direction of the roll paper and the cutting is finished, the vicinity of the corner of the roll paper is placed on the support surface formed on the rear side in the traveling direction when the holder body is cut. When the cutter holder returns to its original position in preparation for cutting, it does not collide with the side of the roll paper and bend the corner of the roll paper.
In addition, since such a support surface supports the back surface of the roll paper when the cutter holder moves, there is no fear of rubbing the print surface even when printing with a small margin, and high-quality printing can be maintained.
[0034]
Furthermore, the pressing roller is strongly pressed against the roll paper and rotates due to the frictional force with the roll paper.As a result, the rotary blade rotates, but the pressing roller is pressed against the non-printing surface of the roll paper. No trace of being crushed by the pressing roller remains.
[0035]
Furthermore, since the surface on which the rotary blade acts is the non-printing surface side of the roll paper, the portion that is rough due to the rotary blade acts on the non-printing surface side of the roll paper, and the appearance of the printed material is good Become.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a periphery of a paper discharge unit in an inkjet printer for roll paper to which a cutter holder according to the present invention is applied.
FIG. 2 is a perspective view of a cutter holder according to the present invention.
FIG. 3 is a side sectional view of the cutter holder.
FIG. 4 is a cross-sectional view showing the periphery of a rotary blade.
FIG. 5 is an enlarged view around the support surface showing a state immediately after the roll paper is cut with a rotary blade.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cutter holder 3 Base frame 5 Paper discharge roller 7 Endless drive belt 9 Drive mechanism 11 Fixed blade 13 Holder main body 15 Rotary blade 16 Arrow 17 Pressing roller 19 Rotating shaft 21 Support surface 23 Guide surface 25 Coil spring 27 Roll paper traveling path 29 Connecting portion 31 Connecting hole R Roll paper Q Corner of roll paper

Claims (5)

A rotary blade for cutting the roll paper having a coat layer on the printing surface side in the width direction;
A rotary shaft of the rotary blade;
A holder body that rotatably supports a rotary shaft of the rotary blade;
A pressing roller having a smaller diameter than the rotary blade, provided concentrically with the rotary blade and adjacent to the rotary blade on the rear side in the roll paper traveling direction as viewed from the rotary blade;
Formed on the upper surface of the holder main body, protrudes forward in the roll paper traveling direction as seen from the rotary blade, and includes a support surface formed on the rear side in the traveling direction during cutting of the holder main body,
The rotary blade can be arranged so as to face from the non-printing surface side of the roll paper, and the support surface is not at the end of the roll paper on the front side in the roll paper traveling direction when viewed from the rotary blade when the roll paper is cut. A cutter holder capable of supporting a printing surface. 2. The connection portion according to claim 1, wherein a connection portion is formed above the holder main body across the traveling path of the roll paper, and the connection portion is connected to a drive transmission member that can reciprocate in the paper width direction. The cutter holder is characterized in that a means is formed and the holder main body and the connecting portion are integrally formed. 3. The obliquely inclined guide surface is formed on the upper surface of the holder main body and on the front side in the direction in which the cutter holder advances when the roll paper is cut. A cutter holder, wherein a part of the rotary blade protrudes. 4. The cutter holder according to claim 1, wherein the rotary blade is constantly urged against the pressing roller by an urging unit. 5. An ink jet recording apparatus comprising the cutter holder according to claim 1.

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