JP2872182B2 - Structure for storing rolled paper in electronic equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a storage section for storing roll-shaped paper used for printer paper in electronic equipment such as a meter reading / ordering terminal device equipped with a printer.

[0002]

2. Description of the Related Art Roll paper used for printer paper of electronic equipment is usually stored in a roll paper storage portion provided inside or adjacent to the housing of the electronic equipment, and the necessary paper is stored there. A large amount is drawn into a printer in an electronic device for use. FIG. 5 is a sectional view showing an example of the structure of a conventional roll-shaped paper storage unit. In the figure, reference numeral 21 denotes a roll-shaped paper storage unit, reference numeral 22 denotes a guide unit, reference numeral 23 denotes a rib, and reference numeral 24 denotes a roll-shaped paper. Reference numeral 25 denotes a sheet, and reference numeral 26 denotes a sheet outlet.

When one sheet of paper 25 is pulled out from the rolled paper 24 stored in the rolled paper storage unit 21,
The roll paper 24 rotates in the direction of the arrow in the figure while partially contacting the inner wall surface of the roll paper storage unit 21 and the guide unit 22. The transport direction of the paper 25 is changed along the guide section 22, and the paper 25 is drawn out of the roll-shaped paper storage section 21 from the paper draw-out port 26. At this time, when the paper 25 is transported, frictional resistance is generated at a contact point between the paper 25 and the guide portion 22. In order to reduce this resistance, the guide portion 22 is provided with a plurality of ribs 23, 23... So that the contact area between the guide portion 22 and the roll-shaped paper 24 and the paper 25 is reduced.

However, FIG. 5 shows a structure in which the transport distance of the paper 25 is kept short, and the course of the paper 25 is suddenly changed, and the roll paper 24 is placed on the guide portion 22. Therefore, the effect of reducing the frictional resistance of the ribs 23, 23... Was not sufficiently exhibited, and sometimes the paper 25 could not be pulled out of the roll-shaped paper storage unit 21 properly, causing troubles such as printing errors. As a method of reducing such troubles, it is conceivable to reduce the resistance by increasing the transport distance of the paper 25 and making the course change gradual. However, in order to lengthen the transport distance and make the course change slower,
Alternatively, it is necessary to secure a space for the paper 25 to travel in the roll-shaped paper storage unit, which leads to an increase in the size of the electronic device and the roll-shaped paper storage unit, which is not preferable. Alternatively, a method of increasing the torque of the motor that pulls the paper 25 and pulling the paper 25 with a strong force that can counteract the frictional resistance can be considered, but improving the performance of the motor directly leads to an increase in cost, and there is a limit to the performance improvement. Therefore, it is not always possible to obtain a sufficient effect, and it cannot be said that it is a preferable means.

[0005]

SUMMARY OF THE INVENTION In view of the above, the present invention provides a roll paper storage unit without increasing the size of an electronic device or a roll paper storage unit or using a high-performance motor. It is an object of the present invention to provide a highly-reliable roll-shaped sheet storage structure capable of reliably pulling out a sheet from the roll-shaped sheet stored in the sheet.

[0006]

SUMMARY OF THE INVENTION The above object is achieved by providing a guide portion in contact with the outer surface of the rolled paper near the paper draw-out opening of the rolled paper storage portion, and a guide portion separately provided for transporting the paper.
Paper transport that rotates in conjunction with paper transport by the
And a paper feed roller.
Can be solved by providing the sheet adjacent to the guide portion via the sheet drawn from the roll sheet .

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings, but the present invention is not limited to only these embodiments. FIG. 1 is a cross-sectional view showing a first example of an embodiment of the present invention, in which reference numeral 1 denotes a roll-shaped paper storage unit, reference numeral 2 denotes a guide unit, reference numeral 3 denotes a paper transport roller, and reference numeral 4 denotes a printer. Reference numeral 5 denotes a roll-shaped paper, reference numeral 6 denotes a paper, reference numeral 7 denotes a roll-shaped paper holder, and reference numeral 7a.
Is a paper outlet.

The roll paper storage unit 1 rotates inside the roll paper storage unit 1 while the stored roll paper 5 partially contacts the inner wall surface of the roll paper storage unit 1 and the guide unit 2. It is configured to be able to. A plurality of ribs (not shown) are provided on an inner wall surface of the roll-shaped paper storage unit 1 and a contact surface of the guide unit 2 with the roll-shaped paper 5, and the roll-shaped paper storage unit 1 and the guide unit 2 are provided. The frictional resistance between the paper and the roll paper 5 is reduced.

The paper transport roller 3 is made of resin, and its outer peripheral surface follows a curved surface formed by the inner wall surface of the roll paper storage unit 1 and the contact surface of the guide unit 2 with the roll paper 5. And is rotatably provided at a position adjacent to the guide portion 2. The paper 6 taken out of the rolled paper 5 has its transport direction changed along the outer peripheral surface of the paper transport roller 3 and is supplied to the printer 4 through a paper outlet 7a.

FIG. 2 is a schematic configuration diagram showing the relationship between the guide portion 2, the paper transport roller 3 and the roll paper holder 7 in FIG. A plurality of ribs 2b, 2b,... Are provided on the contact surface 2a of the guide portion 2 with the roll-shaped paper 5 to reduce the frictional resistance between the guide portion 2 and the roll-shaped paper 5. The paper transport roller 3 is rotatably provided so that an outer peripheral surface thereof is along a contact surface 2 a of the guide portion 2 with the roll-shaped paper 5, and a shaft thereof is fixed to the guide portion 2. By inserting the guide portion 2 into the roll-shaped paper holder 7 in the direction of the arrow in the figure, the roll-shaped paper storage portion 1 is inserted.
The main part of can be comprised. Reference numeral 7a is a paper outlet.

Next, the operation when the paper 6 is pulled out from the roll paper 5 stored in the roll paper storage unit 1 will be described. First, when the motor of the printer 4 rotates and pulls the paper 6 in a state where the roll-shaped paper 5 is set in the roll-shaped paper storage unit 1, the roll-shaped paper 5 is moved to the inner wall surface of the roll-shaped paper storage unit 1 and the guide. Since the sheet 6 has an appropriate frictional resistance by being in partial contact with the section 2, the sheet 6 rotates by the length of the drawn-out sheet.

At this time, since the paper transport roller 3 that rotates with the transport of the paper 6 is provided adjacent to the guide portion 2, the transport distance of the paper 6 is extended to increase the electronic device or the roll paper storage portion. 1. To reduce the resistance associated with paper transport and to reliably pull out the paper 6 from the roll paper 5 stored in the roll paper storage unit 1 without increasing the size of the paper roll 1 or using a high-performance motor. Can be. As a result, the drawn-out paper 6 is reliably printed by the printer 4 and taken out from the paper outlet of the printer 4.

FIG. 3 is a sectional view showing a second example of the embodiment of the present invention.
Reference numeral 12 is a guide portion, reference numeral 13 is a paper transport roller,
Reference numeral 14 denotes a printer, reference numeral 15 denotes a roll sheet, reference numeral 16 denotes a sheet, and reference numeral 17 denotes a shaft. The second example is different from the first example only in that a shaft 17 is provided on the rolled paper 15, and other configurations are common. Therefore, only the points will be described below, and the description of the common parts will be omitted.

In a second example of the embodiment of the present invention,
A shaft 17 is inserted into the center of the roll paper 15, and the shaft 17 is supported in the roll paper storage unit 11. When the paper 16 is conveyed, the roll paper 15 rotates around the shaft 17. Therefore, even if the outer diameter of the roll paper 15 decreases as the paper 16 is pulled out, the roll paper 15 is rolled. It rotates stably without dancing in the storage section 11. Moreover, since the roll-shaped paper 15 does not contact the inner wall surface of the roll-shaped paper storage unit 11 or the guide unit 12, the conveyance resistance is further reduced, and the paper 16 can be smoothly supplied to the printer 14.

FIG. 4 is a schematic structural view showing an example of a sheet conveying roller which can be suitably used in the present invention. As shown in FIG. 4, the diameter of the paper transport roller is small at both ends and has a tapered shape that increases toward the center, and the central portion of the paper transport roller is a parallel portion having a large diameter. I have. When a paper transport roller having such a shape is used, the paper to be transported always exerts a force that tends to approach the center of the paper transport roller, so that the paper can be transported in parallel without bending.

In the two examples of the above embodiment, the example in which the roll-shaped paper storage unit 1 is provided adjacent to the housing of the electronic device has been described. May be provided inside. Also, its size is
It is preferable to make the size as small as possible in a range in which the rolled paper 5 to be used can be stored. In order to shorten the conveyance distance of the paper 6 and to effectively use the space, the roll-shaped paper storage unit 1 is required.
Is preferably provided adjacent to the printer 4. Materials used for existing various rollers can be appropriately used for the paper transport roller 3. For example, hard resins and various metals are preferably used.
The type of the printer 4 is not limited as long as it can use continuous paper.

[0017]

As described above, the present invention relates to a roll-shaped paper storage structure in which the leading end thereof is pulled out in a direction opposite to the direction in which the roll-shaped paper is wound. A guide portion is provided in the vicinity of the paper draw-out port so as to be in contact with the outer surface of the roll-shaped paper, and a paper transport roller is provided adjacent to the guide portion. Therefore, it is possible to reduce the resistance associated with the paper transport and to reliably pull out the paper from the roll paper without increasing the size of the electronic device or the roll paper storage unit or using a high-performance motor. In addition, the occurrence of printing trouble and the like can be suppressed.

Further, when the shaft is inserted into the center of the roll-shaped paper, even if the diameter of the roll-shaped paper is reduced by the rotation of the roll-shaped paper about the shaft when the paper is conveyed, even if the diameter of the roll-shaped paper is reduced. Paper does not dance in the roll paper storage,
Paper can be pulled out reliably. Since the diameter of the paper transport roller is small at both ends and large at the center, the paper can be transported stably in a parallel state.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first example of an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram showing a relationship between a guide unit 2, a paper transport roller 3, and a roll-shaped paper holder 7 in FIG.

FIG. 3 is a sectional view showing a second example of the embodiment of the present invention.

FIG. 4 is a schematic configuration diagram illustrating an example of a sheet conveying roller that can be suitably used in the present invention.

FIG. 5 is a schematic configuration diagram showing an example of the structure of a conventional roll-shaped paper storage unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Roll-shaped paper storage part 2 ... Guide part 3 ... Paper conveyance roller 4 ... Printer 5 ... Roll-shaped paper 6 ... Paper 7 ... Roll-shaped paper holder 7a ... Paper draw-out opening 17 ... Shaft

Claims (3)

(57) [Claims] 1. An electronic device having a storage portion for storing rolled paper, wherein a paper drawer opening is provided in the storage portion, the leading end of which is pulled out in a direction opposite to a direction in which the rolled paper is wound. A guide portion that comes into contact with the outer surface of the rolled paper near the paper draw-out opening of the storage portion,
A paper transport roller that rotates in conjunction with the transport of the paper by a separately provided drive source;
Roller was drawn directly or from the rolled paper
A structure for storing roll-shaped paper in an electronic device, wherein the roll-shaped paper is provided adjacent to the guide section via paper . 2. A shaft is inserted into the center of the roll-shaped paper, and the shaft is supported in the storage portion. When the paper is conveyed, the roll-shaped paper rotates around the shaft. The structure for storing rolled paper in an electronic device according to claim 1. 3. The structure for storing roll-shaped paper in an electronic device according to claim 1, wherein the diameter of the paper transport roller is small at both ends and large at the center.