JP2003171049A - Decurling mechanism of roll paper in handy terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a decurling mechanism of roll paper suited to a handy terminal printing the roll paper formed with a thermosensitive coloring layer on the surface of paper base material by a printing part having a thermal head. <P>SOLUTION: This decurling mechanism is provided with a holder 3 which holds the roll paper 7 with the thermosensitive coloring layer 7' rolled its inside in such a state as being pulled out with the thermosensitive coloring layer 7' facing downward, and a correction edge 11 which abuts on the upper surface of the roll paper 7 to be pulled out from the holder 3 and decurls the roll paper 7. This constitution can sequentially decurling the roll paper 7 during feeding so as to correct the curl. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll paper curl correction mechanism for a handy terminal.

[0002]

2. Description of the Related Art Roll paper having a thermosensitive coloring layer formed on the surface of a paper substrate is used for facsimiles, cash registers, A
It is used as a recording paper for a thermal printer built into various devices such as a TM (automatic cash withdrawal / depositing device) or a handy terminal. All of the conventional roll paper used in these various devices is wound with the thermosensitive coloring layer on the outside so that the paper path is smooth with respect to the thermal head. A habit inevitably occurs, and the cut sheet that has been cut off after printing has curled, making it difficult to read the printed content,
In addition, there is a problem that it hinders storage and organization.

On the other hand, in order to prevent the curl of the cut sheet cut off after printing as described above, many apparatuses for correcting the curl of roll paper have been proposed.

[0004]

By the way, a conventional curl correction device is used in a facsimile, a cash register,
It is configured to be installed in a large-sized device such as ATM, has a complicated structure, and requires a relatively large installation space. Since the handy terminal is designed to be as compact as possible with an emphasis on portability, there is no extra space to install the conventional curl correction device as it is. The terminal itself becomes large and the portability is impaired. For this reason, up to now, no handy terminal equipped with a function of correcting the curl of roll paper exists, and curling of a single sheet printed by the handy terminal has been a serious problem.

The present invention has been made in order to solve the problem in view of the conventional situation, and it is possible to satisfactorily correct the curl of roll paper with a simple structure without increasing the size of the handy terminal. It is an object of the present invention to provide a roll paper curl correction mechanism for a handy terminal.

[0006]

According to the present invention, a roll paper having a thermosensitive coloring layer formed on the surface of a paper substrate is printed by a printing unit equipped with a thermal head in a handy terminal. A holder that holds the roll paper body wound so as to be pulled out in a state where the thermosensitive coloring layer is on the bottom surface, and the roll paper that is pulled out from the holder is brought into contact with the roll paper to reverse the curl. A roll paper curl correction mechanism in a handy terminal, comprising a correction edge that bends in a direction.

In such a construction, when a printing operation is performed on the handy terminal, the roll paper is sequentially pulled out from the holder with the thermosensitive coloring layer on the lower surface and fed to the printing section. The correction edge that abuts the upper surface of the roll paper in the path causes the roll paper being fed to be continuously bent in the direction opposite to the curl, and the curl is corrected. As a result, if the curl does not occur at all in the cut sheet that is cut off after the required information is printed in the printing unit,
Even if it occurs, it can be slight.

Further, the straightening edge can be constituted by an upper edge of the roll paper delivery port formed on the lower portion of the front wall of the holder located on the printing portion side. Accordingly, since it is not necessary to separately provide a space for incorporating the correction edge, it is possible to generate a required curl correction effect with a simple configuration without increasing the size of the handy terminal.

Further, in the above structure, a guide member is provided between the roll paper main body held by the holder and the straightening edge, and the guide end for defining the feed angle of the roll paper to the straightening edge is provided at the upper end. A configuration for arranging can be proposed. Here, since the roll paper has a smaller winding diameter as it is used, the feed angle to the straightening edge becomes gradually smaller, and the curl correction effect is reduced. Therefore, as described above, by defining the feed angle of the roll paper with respect to the correction edge by the guide end, the feed angle can be kept constant regardless of the winding diameter of the roll paper body, and a stable curl A corrective action can be produced. The guide member having the guide end at the upper end can be integrally formed with the holder, or a separately formed member can be fitted into the holder and detachably attached. In particular, when the guide member is separately formed and fitted into the holder, it is not necessary to change the structure of the holder, and the guide member can be easily arranged in the holder of the existing handy terminal.

Further, there is proposed a structure in which at least the contact surface of the guide end with the roll paper is subjected to a low-rubbing process for reducing the sliding resistance of the roll paper. As a result, the pullout resistance of the roll paper is reduced, and the paper can be fed smoothly.

As the above-mentioned low-rubbing process, there is proposed a chamfering process for rounding the guide end, or a process in which a tape having a smooth surface on the surface is attached to the guide end. This makes it possible to easily perform the low-rubbing process.

Further, the guide member is provided so as to be movable back and forth,
The guide member may be movable to a retracted position that facilitates the operation of pulling out the end of the roll paper from the roll paper outlet when the roll paper main body is set in the holder. Thereby, the operability at the time of setting is improved.

Further, there is proposed a structure in which the inner surface of the guide member facing the roll paper main body is a curved surface rising in a concave shape toward the guide end. In such a configuration, when the roll paper main body is pulled toward the guide member side as the roll paper is pulled out, the roll paper main body rises along the concave curved surface of the guide member and slides down by its own weight when it rises to some extent. Then, the ascending / descending operation of rising again is repeated. Then, during this lifting operation, the roll paper main body is rotated to feed the roll paper. Further, since one portion of the peripheral surface of the roll paper body is in line contact with the curved surface of the guide member, frictional resistance during rotation is reduced. As a result, the paper can be fed more smoothly.

Further, an overcoat layer having excellent lubricity may be formed on the front surface and / or the back surface of the roll paper. As a result, it is possible to smoothly feed the paper, prevent the generation of paper dust due to friction, and prevent printing troubles caused by the paper dust.

For forming the overcoat layer, low-friction ink such as OP varnish, medium and varnish can be preferably used. Since these low friction inks have excellent printability, the overcoat layer can be easily formed by printing the low friction inks.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIG. 1, a roll paper curl correction mechanism in a handy terminal according to the present invention comprises a roll paper body 16 wound with a thermosensitive coloring layer 7'inside thereof. A holder 3 that holds the coloring layer 7 ′ so that the coloring layer 7 ′ is the lower surface, and the holder 3
It is characterized in that it is provided with a correction edge 11 which comes into contact with the upper surface of the roll paper 7 pulled out from the above and bends the roll paper 7 in the direction opposite to the curl.

Specific embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of the curl correction mechanism, which is a handy terminal 1.
Is a main body case 2 containing a required device (not shown),
It comprises a holder 3 attached to the side end of the main body case 2. Inside the main body case 2, a printing unit 6 including a thermal head 4 and a platen roller 5 is disposed near the side edge near the holder 3. Also, the holder 3
Is a roll receiving portion 3 for rotatably storing the roll paper body 16
a and the cover portion 3 attached to the upper part of the roll receiving portion 3a
and the front wall 8a of the roll receiving portion 3a is detachably connected to the side end of the main body case 2, while the roll receiving portion 3a includes the cover portion 3a.
b is connected to the roll receiving portion 3a via a hinge 9 and can be opened and closed.

As shown in FIG. 2A, the roll paper main body 16 has a roll paper 7 having a thermosensitive coloring layer 7'formed on the surface of a long belt-shaped paper base material 17 as shown in FIG. As shown
The thermosensitive coloring layer 7'is wound inside in a roll shape, and when it is unwound as it is, a curl is inevitably curled with the thermosensitive coloring layer 7'inside. Then, as shown in FIG. 1, the roll paper body 16 is loaded into the roll receiving portion 3a in a direction in which the feeding end of the outer periphery hangs downward from the front wall 8a side of the roll receiving portion 3a, and The roll paper 7 is pulled out with the thermosensitive coloring layer 7'on the lower side by pulling out the feeding end in the direction of the main body case 2 from the roll paper outlet 10 formed in the lower portion of the front wall 8a of the receiving portion 3a. Has become. Further, the upper edge of the roll paper delivery port 10 is a correction edge 11 that abuts the upper surface of the roll paper 7 that is pulled out and bends the roll paper 7 in the direction opposite to the curl.
The drawn roll paper 7 is fed to the printing unit 6 arranged in the main body case 2, and printing is performed by causing the thermosensitive coloring layer 7'to develop color through the application of heat by the thermal head 4. After being cut, it is cut into a single sheet by an automatic cutter (not shown) or manually.

In such a configuration, by performing a printing operation on an operation unit (not shown) provided in the handy terminal 1, the thermosensitive coloring layer 7'is on the lower surface, and the roll paper delivery port 10 of the holder 3 is operated. The roll paper 7 is sequentially pulled out and fed to the printing unit 6. Then, the correction edge 11 comes into contact with the upper surface of the roll paper 7 in the tensioned state in the feeding path, whereby the roll paper 7 being fed is continuously bent in the direction opposite to the curl, and the curl is Be corrected.
Here, the roll paper 7 has a stronger curl toward the central portion as compared with the outer peripheral portion of the roll paper body 16, and as shown by the phantom line in FIG. When the winding diameter of the main body 16 becomes smaller, the feed angle to the correction edge 11 becomes gradually smaller, and the curl correction effect is reduced. This allows the roll paper body 16 to be used in the early and middle stages of use.
Paper 7 pulled out from the outer peripheral part and the intermediate part of the
When the curl is bent by the correction edge 11 in the direction opposite to the curl, the curl disappears completely, and no curl occurs in the cut sheet that is cut off after the required information is printed by the printing unit 6.
Further, in the latter half of the use, the roll paper 7 pulled out from the central portion does not completely lose the curl even if it is straightened by the straightening edge 11, and the cut cut sheet is slightly curled. However, it goes without saying that the curl is significantly reduced as compared with a single-cut sheet created by a conventional handy terminal that does not have a curl correction function.

FIG. 3 shows a second embodiment. This embodiment is provided with a structure for preventing the curl correction function from decreasing as the roll diameter of the roll paper body 16 becomes smaller. The holder 3 has a roll paper body 1
6 and the rectifying edge 11 between the rectifying edge 11 and the roll paper 7
Member 13 having a guide end 12 that defines the feed angle of the
Is provided. The guide member 13 includes a roll receiving portion 3a.
Is erected at a predetermined height along the inner side of the front wall 8a, and has a guide end 12 formed at its upper end, and its lateral width is at least equal to or wider than the lateral width of the roll paper 7. . Then, as the roll paper 7 is pulled out by overcoming the guide end 12, even if the roll diameter of the roll paper main body 16 becomes smaller due to use, the roll paper 7 is corrected from the guide end 12 as shown by the imaginary line in FIG. The feed angle of the roll paper 7 hanging toward the edge 11 can be kept constant. As a result, a stable curl correction action by the correction edge 11 can be generated regardless of the winding diameter of the roll paper 7.

On the contact surface of the guide end 12 with the roll paper 7, as shown in FIGS.
By the chamfering process 18 for rounding, the low-rubbing process for reducing the sliding resistance of the roll paper 7 is performed. By the low-rubbing process, the pullout resistance of the roll paper 7 is reduced, and the paper feeding is smoothly performed. I am trying to get it done. This low-rubbing process can also be performed by attaching a tape 20 having a sliding surface 19 on the surface thereof to the guide end 12, as shown in FIG. 4B. As the tape 20,
A Teflon tape having a polytetrafluoroethylene (trade name; Teflon) layer on its surface can be preferably used.
Further, FIG. 4C shows a case where the guide end 12 is rounded and the tape 20 is adhered on the guide end 12 so as to be subjected to a low-rubbing process. Can be reduced.

In this embodiment, the guide member 13 having the guide end 12 at the upper end is formed integrally with the roll receiving portion 3a, but the guide member 13 is formed separately from the roll receiving portion 3a. May be forcibly fitted between the left and right side walls of the holder 3 so as to be detachably attached.

5 and 6 show a third embodiment, in which the guide member 13 is provided so as to be able to move up and down, and the guide member 13 has a handle portion 1 extending downward.
6 are connected to each other, and by pulling the handle portion 14 downward from the operation port 15 formed in the bottom wall 8b of the roll receiving portion 3a, from the steady position of the guide member 13 shown in FIG.
It can be moved to the retracted position shown in. When the roll paper body 16 is set in the holder 3, the guide member 13 is moved to the retracted position so that the roll paper 7 can be easily pulled out from the roll paper delivery port 10.

FIG. 7 shows a fourth embodiment. In this embodiment, the inner surface of the guide member 13 facing the roll paper body 16 is a curved surface 21 that rises in a concave shape toward the guide end 12. is there. Here, the guide member 13 is formed separately from the holder 3, and the guide member 13 is detachably attached by forcibly fitting between the left and right side walls of the holder 3.

In such a configuration, as described above, by performing a printing operation on the operation unit (not shown) provided in the handy terminal 1, the roll paper delivery port 10
The roll paper 7 is sequentially drawn from the paper and is fed to the printing unit 6, and as the roll paper 7 is drawn, the guide member 13
When the roll paper main body 16 is pulled to the side, the roll paper main body 16 rises along the concave curved surface 21 of the guide member 13 as shown by an imaginary line in FIG. The lifting operation of rising again is repeated. Then, during this lifting operation, the roll paper body 16 is rotated so that the roll paper 7 is fed out. Further, since one portion of the peripheral surface of the roll paper body 16 comes into line contact with the curved surface 21 of the guide member 13, the frictional resistance during rotation becomes small.
As a result, the paper can be fed more smoothly.

Further, as in this embodiment, the guide member 13
In the case where the holder is separately formed and is detachably fitted to the holder 3, it is not necessary to change the structure of the holder 3, and the holder 3 can be easily arranged in the holder 3 of the existing handy terminal 1. Along with the roll paper body 16
By removing the guide member 13 at the time of setting, the operation of pulling out the roll paper 7 from the roll paper delivery port 10 can be easily performed.

In the fourth embodiment, the guide member 1
The curved surface 21 of No. 3 can be subjected to a low-rubbing process in which the above-mentioned Teflon tape is adhered, whereby the frictional resistance during rotation of the roll paper body 16 can be further reduced.

In each of the above embodiments, the roll paper 7
2B, if there is a risk of a printing failure due to paper dust caused by the sliding resistance of the roll paper 7, as shown in FIG. The layer 22 may be formed. For forming the overcoat layer 22, a low-friction ink such as OP varnish, medium, varnish or the like can be preferably used. Since these low-friction inks have excellent printing characteristics, the overcoat layer 22 can be easily formed by printing the low-friction ink. Then, in this way, on the front surface and / or the back surface of the roll paper 7,
When the overcoat layer 22 having excellent lubricity is formed, the paper can be smoothly fed, and the generation of paper dust due to friction can be prevented, so that the printing trouble due to the paper dust can be prevented.

In each of the above embodiments, the straightening edge 1
1 is constituted by the upper edge of the roll paper delivery port 10 formed in the holder 3, but the invention is not limited to this, and the correction edge 11 is the side of the main body case 2 near the holder 3. It can also be configured by the upper edge of the roll paper inlet, not shown, which is opened at the end.
The roll paper 7 can be arranged anywhere in the main body case 2, the holder 3, and the like. Also,
If the tip of the straightening edge 11 is formed into a sharp pointed shape that comes into line contact with the roll paper 7, the curl correction effect is improved.

Further, the guide end 12 can be constituted by a rod or a roller which is horizontally installed in the holder 3.

[0031]

As described above, the present invention provides a heat-sensitive coloring in a handy terminal for printing on a roll paper having a heat-sensitive coloring layer formed on the surface of a paper substrate by a printing unit equipped with a thermal head. The roll paper main body wound with the layers inside is held so that the thermosensitive coloring layer is on the lower side and held, and the roll paper is wound by abutting on the upper surface of the roll paper drawn from the holder. Since the roll paper curl correction mechanism is configured so as to have a curl and a correction edge that is bent in the opposite direction, the correction paper allows the roll paper being fed to continuously rotate in the opposite direction to the curl. The curl is corrected by being bent. As a result, curl does not occur at all in the single-cut sheet that is cut off after the required information is printed by the printing unit, or the curl can be reduced.

Further, since the straightening edge is constituted by the upper edge of the roll paper delivery port formed on the lower portion of the front wall of the holder located on the printing portion side, it is not necessary to separately provide a space for incorporating the straightening edge. , The required curl correction effect can be produced with a simple configuration without increasing the size of the handy terminal.

Further, by disposing a guide member having a guide end for defining the feed angle of the roll paper to the correction edge at the upper end between the roll paper main body held by the holder and the correction edge. , Regardless of the winding diameter of the roll paper body,
The feed angle can be kept constant, and a stable curl correction effect can be produced.

Further, at least the contact surface of the guide end with the roll paper is subjected to a low-rubbing process for reducing the sliding resistance of the roll paper, so that the pull-out resistance of the roll paper is reduced and the paper is smoothly fed. Can be done.

The low-rubbing process can be easily performed by chamfering the guide end to be round or by attaching a tape having a slippery surface on the guide end.

Further, the guide member is provided so as to be movable back and forth,
By setting the guide member to a retracted position that facilitates the operation of pulling out the end of the roll paper from the roll paper outlet when setting the roll paper main body in the holder, the work of setting the roll paper in the holder can be performed. It becomes easy and the handling property can be improved.

Further, by making the inner surface of the guide member facing the roll paper main body a curved surface which rises in a concave shape toward the guide end, the roll paper produced as the roll paper main body moves up and down. The roll paper is fed out by the rotating action of the main body, and one portion of the peripheral surface of the roll paper main body comes into line contact with the curved surface, so that the frictional resistance during rotation is reduced. As a result, the paper can be fed more smoothly.

Further, by forming an overcoat layer having excellent lubricity on the front surface and / or the back surface of the roll paper,
It is possible to smoothly feed the paper, prevent generation of paper dust due to friction, and prevent printing troubles caused by the paper dust.

Further, in forming the above-mentioned overcoat layer, O
When a low-friction ink such as P varnish, medium or varnish is used, the overcoat layer can be easily formed by printing the low-friction ink.

[Brief description of drawings]

FIG. 1 is a side view of a curl correction mechanism according to a first embodiment.

FIG. 2A is a side sectional view of a roll paper, and FIG. 2B is a side sectional view of a roll paper in which overcoat layers are formed on both front and back surfaces.

FIG. 3 is a side view of a curl correction mechanism according to a second embodiment.

FIG. 4 is an enlarged side sectional view of a guide end that has been subjected to various types of low-rubbing processing.

FIG. 5 is a side view of a curl correction mechanism according to a third embodiment.

FIG. 6 is an operation explanatory view of the curl correction mechanism according to the third embodiment.

FIG. 7 is a side view of a curl correction mechanism according to a fourth embodiment.

[Explanation of symbols]

1 Handy terminal 3 holder 4 thermal head 6 printing section 7 roll paper 7'thermosensitive coloring layer 8a front wall 10 Roll paper outlet 11 straightening edge 12 guide edge 13 Guide member 16 Roll paper body 17 Paper base 18 Chamfering 19 Sliding surface 20 tapes 21 curved surface 22 Overcoat layer

Claims (10)

[Claims] 1. A handy terminal for printing on a roll paper having a thermosensitive coloring layer formed on the surface of a paper substrate by means of a printing unit equipped with a thermal head, and a roll paper body wound with the thermosensitive coloring layer inside. A holder for holding the thermosensitive coloring layer so that it is pulled out in a state where the thermosensitive coloring layer is on the lower surface, and a correction edge for abutting the upper surface of the roll paper pulled out from the holder to bend the roll paper in the direction opposite to the curl. A roll paper curl correction mechanism for a handy terminal, which is characterized by being provided. 2. The handy terminal according to claim 1, wherein the straightening edge is constituted by an upper edge of a roll paper outlet formed on a lower portion of the front wall of the holder located on the printing portion side. Roll paper curl correction mechanism. 3. A guide member having, at its upper end, a guide end for defining a feed angle of the roll paper to the correction edge is provided between the roll paper main body held by the holder and the correction edge. A roll paper curl correction mechanism in a handy terminal according to claim 1 or 2. 4. A roll paper for a handy terminal according to claim 3, wherein at least a contact surface of the guide end with the roll paper is subjected to a low-rubbing process for reducing sliding resistance of the roll paper. Curl correction mechanism. 5. The roll paper curl correction mechanism for a handy terminal according to claim 4, wherein the low-rubbing process is a chamfering process for rounding the guide end. 6. The winding of roll paper in a handy terminal according to claim 4, wherein the low-rubbing process is performed by applying a tape having a sliding surface on the guide end. Habit correction mechanism. 7. A guide member is provided so as to be able to move forward and backward, and the guide member can be moved to a retracted position that facilitates the operation of pulling out the end of the roll paper from the roll paper delivery port when setting the roll paper body in the holder. The roll paper curl correction mechanism in a handy terminal according to any one of claims 3 to 6, characterized in that. 8. The handy terminal according to claim 3, wherein an inner side surface of the guide member facing the roll paper body is a curved surface rising in a concave shape toward the guide end. Roll paper curl correction mechanism in Japan. 9. A roll paper roll in a handy terminal according to claim 1, wherein an overcoat layer having excellent lubricity is formed on the front surface and / or the back surface of the roll paper. Habit correction mechanism. 10. The roll paper curl correction mechanism according to claim 9, wherein the overcoat layer is made of a low-friction ink such as OP varnish, medium or varnish.