JP2002226125A - Cutter holder and ink-jet recording device having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutter holder capable of solving a problem that the cutter holder collides with a side of the cut paper roll, and the printed paper roll is bent, preventing a part tattered by the action of a rotary blade from being seen from a printed face side, and further preventing the remaining of a mark of a pressing roller onto the printed face. SOLUTION: This cutter holder comprises the rotary blade 15 for cutting the paper roll over its width direction, a rotating shaft 19 of the rotary blade, a holder body 13 rotatably supporting the rotating shaft of the rotary blade, the pressing roller 17 mounted concentrically with the rotary blade in adjacent to the rotary blade at a rear side in the paper advancing direction when observed from the rotary blade, and having a diameter smaller than the rotary blade, and a supporting face 21 formed on an upper face of a holder body, projecting to a front side in the paper advancing direction when observed from the rotary blade, and formed at a rear side in the advancing direction of the holder body in cutting. The rotary blade is faced from a non-printed face side of the paper roll.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field 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 having the cutter holder.

[0002]

2. Description of the Related Art In an ink jet 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 roll paper after printing is completed to form cut paper.

[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 past the side of the cut roll paper after cutting the roll paper, when the cutter holder attempts to return to the original position for the next cut, the cutter holder is There is a problem that the printed roll paper is bent by colliding with the side edge.

In the conventional cutter holder, the rotary blade acts from the printing surface side to cut the roll paper.
The cutting edge in a rough state appears on the printing surface side due to the action of the rotary blade, and as a result, although the print quality is good, the quality of the printed matter as a whole is inferior.

Further, a pressing roller is provided on the rotary blade,
When a mechanism is used in which the rotary blade rotates with the rotation of the pressing roller when the cutter holder moves while the peripheral surface of the pressing roller is strongly pressed against the roll paper, the rotary blade acts from the printing surface side. When the roll paper is cut, the trace of the pressing roller remains on the printing surface, resulting in a problem of deteriorating the print quality.

[0006] Furthermore, since the cut end of the 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 cut end of the roll paper is caught on the drive belt, and There is a problem that the driving of the driving belt may be hindered.

[0007]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the problem that the cutter holder collides with the side of the cut roll paper to bend the printed roll paper and that the rotary blade acts. An object of the present invention is to provide a cutter holder in which the roughened portion is not seen from the printing surface side, and the trace of the pressing roller does not remain on the printing surface.

[0008]

According to a first aspect of the present invention, there is provided a cutter holder, comprising: a rotary blade for cutting a roll paper having a coating layer on a printing surface side in a width direction; A rotation axis of the rotary blade, a holder body rotatably supporting the rotation axis 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, and formed on the upper surface of the holder body. A support surface that projects forward in the roll paper traveling direction as viewed from the rotary blade, and is formed on the rear side in the traveling direction when cutting the holder body. The support surface can support a non-printing surface of a roll paper end portion on the front side in the roll paper traveling direction when viewed from the rotary blade when the roll paper is cut. It is assumed that.

According to the present invention, when the printed portion of the roll paper is cut by the rotary blade, the support surface can support the roll paper end rearward in the roll paper traveling direction viewed from the rotary blade from below. . When the rotary blade moves in the width direction of the roll paper and the cutting is completed, the vicinity of the corner of the roll paper is
When the cutter holder returns to its original position in preparation for the next cutting, it collides with the side of the roll paper because it rests on the support surface formed on the No corners are bent.

In addition, since such a support surface supports the back surface of the roll paper when the cutter holder moves, there is no danger that the print surface will be rubbed and stained even when printing with a small margin (margin), and high quality printing will be maintained. Can be.

Further, the pressing roller is strongly pressed against the roll paper, rotates by frictional force with the roll paper, and has a function of rotating the rotary blade. As a result, the pressing roller is pressed against the non-printing surface of the roll paper. Therefore, there is no trace of the crushed by the pressing roller remaining on the printing surface.

Furthermore, since the surface on which the rotary blade acts is on the non-printing surface side of the roll paper, the portion which is rough due to the action of the rotary blade is on the non-printing surface side of the roll paper,
The appearance of printed matter is improved.

According to a second aspect of the present invention, in the cutter holder according to the first aspect, a connecting portion is formed above the holder body with the traveling path of the roll paper interposed therebetween, and the connecting portion has a paper width. A connection means for connecting to a drive transmission member which can reciprocate in a direction is formed, and the holder main body and the connection 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 cut by the rotary blade falls, the roll paper is removed. The drive transmission member can be prevented from being caught and hindering.

According to a third aspect of the present invention, in the cutter holder according to the first or second aspect, when cutting the roll paper on the upper surface of the holder main body, a front side in a direction in which the cutter holder advances is provided. An inclined guide surface is formed, and a part of the rotary blade protrudes above the guide surface. According to the present invention, by the inclined structure of the guide surface, it is possible to smoothly realize the cutting of the roll paper by the rotary blade and the subsequent placement of the cut paper on the support surface following the cutting.

According to a third aspect of the present invention, in the cutter holder according to the first or second aspect, the rotary blade is constantly urged against the pressing roller by an urging means. According to the present invention, when the cutter holder moves in the paper width direction of the roll paper in a state where 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, the roll paper can be cut in the paper width direction while the rotary blade rotates.

According to a fourth aspect of the present invention, there is provided an ink jet recording apparatus including the cutter holder according to the first aspect. According to the present invention, since the cutter holder supports the back surface of the roll paper when moving, there is no danger of rubbing the printing surface even when printing with a small margin (margin), and high-quality printing at the same level as photographs in an ink jet recording apparatus. 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 contact the printing surface, and no trace of the crushed by the pressing roller remains on the high quality printing surface. . Furthermore, since the surface on which the rotary blade acts is on the non-printing surface side of the roll paper, the part which is rough due to the operation of the rotary blade is on the non-printing surface side of the roll paper, and the appearance of the printed matter is improved.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the vicinity of a paper discharge portion of an ink jet printer to which the cutter holder according to the present invention can be applied to roll paper, FIG. 2 is an enlarged perspective view of the cutter holder of the present invention, and FIG. FIG. 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 by the rotary blade.

In FIG. 1, reference numeral 1 denotes a cutter holder of the present invention. The cutter holder 1 discharges a roll portion of a roll paper ink jet printer, that is, a portion of a roll paper printed after printing is completed by the ink jet printer. It is provided on the base frame 3 of the portion to be formed. A plurality of paper discharge rollers 5 for applying a driving force for paper discharge to the roll paper are provided on the base frame 3 of the paper discharge unit (the paper discharge driven rollers are not shown, and only the paper discharge drive rollers are shown). And an endless drive belt 7 for reciprocating the cutter holder 1 in the width direction of the base frame 3. Pulleys (not shown) are provided on the left and right sides of the endless drive belt 7. One of the pulleys is driven to rotate by a drive motor (not shown), so that the endless drive belt 7 can reciprocate right and left of the base frame 3. ing. In FIG. 1, reference numeral 9 denotes a drive mechanism including a group of gears for rotating and driving a discharge roller and the like.

A fixed blade 11 extending in the width direction of the base frame 3 is provided below the endless drive belt 7 in the base frame 3. The fixed blade 11 is for shearing the roll paper R in cooperation with a rotary blade described later provided in the cutter holder 1.

As shown in FIG. 2, the cutter holder 1 is provided with a holder body 13, in which the rotary blade 15 is adjacent to the rear side in the roll paper advancing direction as viewed from the rotary blade 15, as shown in FIG. Pressing roller 1 positioned
7 are provided around the rotation shaft 19.

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. Such a support surface 21 is attached to 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 completed, the vicinity of the corner Q of the roll paper R is placed on the support surface 21 as shown in FIG. On the cutter holder 1 to prepare for the next cutting.
When is returned to the original position, the cutter holder 1 does not collide with the side of the roll paper R and bend the corner Q of the roll paper R.

An inclined guide surface 23 is formed on the upper surface of the holder body 13 and on the front side in the direction in which the cutter holder 1 advances when cutting the roll paper R. The rotary blade 15 is located above the guide surface 23.
Is partly protruding. The protruding portion of the rotary blade 15 is arranged so as to face the non-printing surface side of the roll paper R. By the inclined structure of the guide surface 23, the cutting of the roll paper R by the rotary blade 15 and the placement of the cut paper on the support surface 21 subsequent to the cutting can be smoothly realized.

The rotary blade 15 has a circular shape with a blade formed around the rotary blade 15.
9 is constantly urged against the pressing roller 17 by a coil spring 25. The pressing roller 17 is positioned concentrically with the rotary blade 15, and the rotary blade 15
Has a smaller diameter. The pressing roller 17 is a member provided to rotationally drive the rotary blade 15, and is positioned so as to be pressed against the lower surface 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. Rotary blade 1
5 is urged by the pressing roller 17, so that when the pressing roller 17 rotates, the rotary blade 15 also rotates.

As shown in FIG. 2 and FIG.
A connecting portion 29 is formed on the opposite side with the traveling path 27 of the roll paper R interposed therebetween. The connecting portion 29 is a portion formed to connect to the endless drive belt 7. Specifically, the connecting portion 29 is connected to the endless drive belt 7 through a connecting hole 31 formed in the connecting portion 29 through a screw or a rivet. Has become.

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, whereby the entire cutter holder 1 is integrally injection-molded. be able to.

By the way, as in the present embodiment, a connection portion 29 is formed above the holder body 13 and the connection portion 29 can be connected to the endless drive belt 7 by adopting a structure.
When the roll paper cut by the rotary blade 15 falls, it is possible to avoid a problem that the roll paper is caught on the endless drive belt 7 and hinders.

The cutter holder 1 of the present invention has the above-described configuration, and a 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 performed in a case where the printed portion is cut with an appropriate margin (margin) left, and in a case where the printed material thus cut is cut more accurately so that, for example, the margin (margin) becomes zero. May be cut again at a different position. Here, the former cutting will be described in detail, and the latter cutting will be supplementarily described.

First, in FIG. 1, after printing has been performed on the upper surface of the roll paper R, the roll paper R after printing advances from the back side of the paper surface of FIG. 1 to the front side. As described above, since the cutter blade 1 is arranged so that the rotary blade 5 faces the non-printing surface side of the roll paper R, in the present embodiment, the printing surface on which the coat layer is formed is It is the upper surface, and proceeds with the non-printing surface being the lower surface of the roll paper R. When the roll paper R is conveyed by a paper conveyance unit such as the discharge roller 5 to the margin area between the print area to be cut this time and the next print area, the drive of the roll paper R stops at that position, The endless drive belt 7 starts driving. Thus, the cutter holder 1 connected to the endless drive belt 7 starts to move from left to right in FIG.

At this time, the peripheral surface of the pressing roller 17 is
Since the roll paper R is pressed against the non-printing surface (lower surface side), the pressing roller 17 rotates with the movement of the cutter holder 1, whereby the rotary blade 15 urged by the pressing roller 17 rotates, and The roll paper R can be sheared while moving in the width direction of R and cooperating with the fixed blade 11. As described above, according to the present invention, since the peripheral surface of the pressing roller 17 presses the roll paper from the non-printing surface side of the roll paper, a pressure contact mark remains on the printing surface side, or the margin (margin) of the printing surface is small. No rubbing of ink. Since the surface on which the rotary blade 15 acts is the non-printing surface of the roll paper R, the rotary blade 15 and the fixed blade 1
The portion roughened by the shearing action of No. 1 becomes the non-printing surface side of the roll paper, and the appearance when the printed matter is viewed from the printing surface side is improved.

When the entire width of the roll paper R is cut by the rotary blade 15, the movement of the cutter holder 1 ends once,
The operation shifts to the operation of returning to the original position in preparation for the next cutting. At this time, as shown by an arrow 16 in FIG. 5, the cutter holder 1 advances while changing its direction in the direction opposite to the advancing direction at the time of cutting.
Is supported in a state of being placed on the supporting surface 21 of the printed material, so that the cutter holder 1 is prevented from colliding with the side of the printed material and bending the printed material.

In the present invention, since the support surface 21 is provided, the roll paper R
And the support surface 21 are rubbed, but since the surface that rubs against the support surface 21 is the non-printed surface of the roll paper, the ink immediately after printing is not rubbed and the printed surface is not stained.

On the other hand, after the printed portion is cut with leaving an appropriate margin as described above, the cut portion may be cut again at a more accurate position so that the margin becomes zero, for example.
Even in such a case, cutting can be performed by applying the cutter holder 1 of the present invention. In this case, the elongated cut portion, which is the margin portion to be cut off, corresponds to the traveling path 2 of the roll paper R.
7 falls into a receiving box (not shown) located below,
In the present invention, since the connecting portion 29 is formed above the holder main body 13 with the traveling path of the roll paper interposed therebetween, it is possible to prevent the cut end from being caught on the endless drive belt 7 when falling.

[0033]

According to the present invention, when the printed portion of the roll paper is cut by the rotary blade, the supporting surface supports the roll paper end rearward in the roll paper traveling direction viewed from the rotary blade from below. Can be. When the rotary blade moves in the width direction of the roll paper to complete the cutting, the vicinity of the corner of the roll paper rests on the support surface formed on the rear side of the holder body in the advancing direction when cutting. When the cutter holder returns to the original position in preparation for cutting, the corner of the roll paper is not bent by colliding with the side 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 risk of rubbing the print surface even with printing with a small margin, and high-quality printing can be maintained.

Further, the pressing roller is strongly pressed against the roll paper, rotates by the frictional force with the roll paper, and has a function of rotating the rotary blade. As a result, the pressing roller is pressed against the non-printing surface of the roll paper. There is no trace of crushed by the pressing roller on the 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 which is rough due to the operation of the rotary blade is on the non-printing surface side of the roll paper,
The appearance of the printed matter becomes good.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the vicinity of a paper discharge unit in an ink jet printer for roll paper to which a cutter holder according to the present invention is applied.

FIG. 2 is a perspective view of the cutter holder of 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 of the vicinity of a support surface showing a state immediately after the roll paper is cut by a rotary blade.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cutter holder 3 Base frame 5 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 Rotary shaft 21 Support surface 23 Guide surface 25 Coil spring 27 Roll paper traveling path 29 Connecting part 31 Connecting hole R Roll paper Q Corner of roll paper

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kazuo Otsuka 3-3-5 Yamato, Suwa-shi, Nagano F-term (reference) in Seiko Epson Corporation 2C058 AB04 AB16 AB17 AC07 AE04 AE09 AF51 LA03 LB10 LB17 LB24 LB35 LC11 2C060 BA01 BC04 BC12 BC15 BC84 3C027 RR03 RR06 RR08 SS02 SS03 SS06

Claims (5)

[Claims] 1. A rotary blade for cutting a roll paper having a coating layer on a printing surface side in a width direction, a rotary shaft of the rotary blade, and a holder rotatably supporting the 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 a rear side in the roll paper advancing direction as viewed from the rotary blade; A support surface formed on the upper surface, protruding forward in the roll paper traveling direction when viewed from the rotary blade, and formed on the rear side in the traveling direction when cutting the holder body, wherein the rotary blade comprises the roll paper. Can be arranged so as to face from the non-printing surface side, and the support surface is not printed on the roll paper end in the roll paper advancing direction front side when viewed from the rotary blade when cutting the roll paper. A cutter holder which is a possible support. 2. The drive transmission member according to claim 1, wherein a connecting portion is formed above the holder body with the traveling path of the roll paper interposed therebetween. A cutter holder, wherein connection means for connection are formed, and the holder main body and a connecting portion are integrally formed. 3. The guide surface according to claim 1, wherein an obliquely inclined guide surface is formed on an upper surface of the holder main body and at a front side in a direction in which the cutter holder advances when cutting the roll paper, A cutter holder, wherein a part of the rotary blade projects above the guide surface. 4. A cutter holder according to claim 1, wherein said rotary blade is constantly urged against said pressing roller by urging means. 5. An ink jet recording apparatus comprising the cutter holder according to claim 1. Description: