JP2002187646A - Roll paper sheet holding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure a set performance of a roll paper sheet and carrying quality. SOLUTION: A flange 2 rotatably supported is arranged at a front surface of a holder body 1, and the roll paper sheet is supported with an end of the roll paper sheet fitted to the flange 2. A brake shoe 11 for generating a back tension is provided to an outer periphery of the flange 2, and is pressed to the flange 2 by pressure spring 12 thereby generating the back tension. A frame member 7 is provided inside the holder body 1, and a heater 8 is attached to a back surface of the frame member 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll paper holding device used for an apparatus having a paper feed mechanism such as a copying machine or a printer.

[0002]

2. Description of the Related Art
When the roll paper is set in an apparatus such as a copying machine, the following methods are available: (1) a spool corresponding to the entire width of the roll paper is inserted into the inner diameter of the paper tube; (2) paper that sandwiches the roll paper in the apparatus from both sides. A holder is provided (for example, Japanese Utility Model Application Laid-Open No. 4-40054). 64-4
No. 3049) are mainly implemented and proposed.

[0003] The method (1) has the least deviation of the shaft center when the roll paper is fed and has the most stable transport quality. However, when the roll paper (36 inches) handled by the copying machine is used, The length of the spool is close to 1 m, which makes handling very difficult. The method (2) is considered to be the simplest method for setting the roll paper. However, in order to securely fit the paper holder into the paper tube, a method such as swinging the paper holder is used. Is necessary (for example, see JP-A-5-301)
660, etc.), and the mechanism becomes complicated.
Furthermore, the method (3) has no problem as described in the method (2) because the flange is detached outside the machine, but since the roll paper is set in the apparatus via the flange, the flange is formed of the roll paper. If it is mounted obliquely with respect to the axis, the transport quality will be degraded. To deal with this, it is necessary to take measures such as tightening with screws so that there is no backlash when mounting the flange.

The present invention has been made in view of the above-mentioned conventional problems,
It is an object of the present invention to provide a roll paper holding device capable of securing roll paper setting and transport quality.

[0005]

According to a first aspect of the present invention, there is provided a roll paper holding apparatus provided with a storage section for storing roll paper, in order to achieve the above object. It consists of a housing for accommodating paper, and a holder that fits into the roll paper to be stored from both sides. The holder has a rotatable holding portion that supports the inner diameter of the paper tube of the roll paper, and is fitted to the roll paper. The two holders are placed on the housing from above so that the roll paper can be held and positioned in the storage device.

According to a second aspect of the present invention, in order to achieve the above object, in the roll paper holding device of the first aspect, at least one side of the holder has an outer diameter of unused roll paper to be stored. Also does not protrude.

According to a third aspect of the present invention, in order to achieve the above object, in the roll paper holding device according to the first or second aspect, a dehumidifying means for preventing the roll paper stored in the housing from absorbing moisture. Are provided, and the inside of the housing is divided into minimum spaces corresponding to the width of the roll paper by holders fitted to both ends of the roll paper.

According to a fourth aspect of the present invention, there is provided a roll paper holding apparatus according to any one of the first to third aspects, wherein the skew and slack do not occur when the roll paper is fed out. A back tension means for applying a transport load is provided in the holder.

According to a fifth aspect of the present invention, in order to achieve the above object, in the roll paper holding apparatus of the fourth aspect, the back tension means supports the inner diameter of the roll paper while supporting the inner diameter of the paper tube. A brake member for holding the outer peripheral portion of the cylinder, a biasing member for pressing the brake member, and a receiving member for the biasing member are arranged in a straight line, and one end of the receiving member protrudes from the lower surface of the holder. And
When the holder is set, the projecting end of the receiving member is pushed into the housing surface, the urging means contracts, and the brake member is pressurized.

According to a sixth aspect of the present invention, in order to achieve the above object, in the roll paper holding device of the fifth aspect, a spool is used by providing a receiving portion for the spool shaft of the roll paper in the housing. The roll paper can be held.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front perspective view (A) of a roll paper holder (hereinafter simply referred to as a holder) and a rear perspective view (B) of an embodiment of a roll paper holding device according to the present invention. In FIG. 1, 1 is a holder body,
It has an L-shaped cross section. The lower surface of the holder main body 1 is a set surface 4, and projections 5 to be fitted when the housing is set are provided on both lower sides of the holder main body 1. A roll support portion (hereinafter, referred to as a flange) 2 that is rotatably supported is provided on the front surface of the holder body 1, and a rib 3 is provided on the circumference of the paper tube fitting portion.

A brake shoe 11 for applying back tension is provided on an outer peripheral portion of the flange 2.
Is mounted so as to move up and down along the guide groove 1a provided in the flange 2, and is pressed against the flange 2 at a predetermined pressure by the urging force of the pressure spring 12, thereby generating an appropriate back tension. . A handle 6 is provided on the upper surface of the holder body 1.

A frame member 7 is contained inside the holder main body 1. This frame material 7 is made of a metal having good thermal conductivity and rigidity (iron, SUS, etc.)
It also functions as a heat sink. On the back of the frame material 7,
A heater 8 is attached, and its terminals are electrically connected to a terminal spring 10 via a bracket 9.

FIG. 2 is a sectional view (A) of a holder and a sectional view (B) of a state in which roll paper is set and set in a housing. The flange 2 is rotatably supported by a shaft 14 via bearings 16 and 17. The shaft 14 is fixed to the frame member 7 and one end is fixed to an auxiliary bracket 15 for improving strength. The lower surface of the frame member 7 is exposed to the lower surface of the holder body 1 in the same state as the setting surface 4. When the holder main body 1 is pushed in the direction of arrow A in the figure, the ribs 3 provided on the flange 2 bite into the inner diameter of the roll paper 13 to prevent rotation, so that the fitting of the roll paper 13 to the holder is prevented. Done.

The holder main body 1 is positioned by fitting the projections 5 into fitting grooves 20 provided in the housing 18. Protrusion 5
Is vertically elongated and is in surface contact with the fitting groove 20 to prevent the holder body 1 from falling down due to the weight of the roll paper 13. Further, due to its L-shape, the holder main body 1 receives a load by extending the bottom surface inward from a position where the load B applied to the roll paper 13 to the holder main body 1 is applied (indicated by an arrow C in the figure). This also prevents falling down.

In this state, the lower surface of the frame member 7 comes into contact with the housing 18, and the dehumidifying heater 21 provided on the housing 18.
(See FIG. 4). Further, an electrode plate 19 is provided below the housing 18 and is electrically connected to the terminal spring 10 so that the heater 8 can generate heat.

FIG. 3A shows a state in which the holder main body 1 is connected to the roll paper 1.
It is a schematic diagram at the time of setting to 3. As shown by an arrow D in the figure, the outer shape (part) of the holder main body 1 is made smaller than the outer circumference of the roll paper 13 so that the roll paper 13 is not lifted when the holder is set, for example, on a table. The roll paper 13 can be fitted from the side with the roll paper 13 placed on the paper.

As shown in FIG. 3B, the holder body 1 is freely rotated with respect to the roll paper 13 in order to prevent the back tension from being applied in the unset state. When the user lifts the roll paper 13 in order to set the roll paper 13 fitted with the holder main body 1 in the housing, the holder main body 1 is rotated so that the setting surface is down due to weight balance (arrow E in the figure). ), If it is dropped on the housing 18 as it is, it can be set. In particular, some roll paper such as copiers and plotters weigh as much as 10 kg,
It is not comfortable to lift each time it is set, but in the present embodiment the holder set is easier.

FIG. 3B is a sectional view showing a state where the holder main body 1 is set on the housing 18. The holder body 1 is positioned by fitting into the fitting groove 20 by the protrusions 5 on both sides,
The setting surface 4 is placed on the bottom surface of the housing 18 and receives a load.
As described above, the dehumidification heater 21 is attached to the back surface of the housing 18, and the frame member 7 of the holder main body 1 can transfer this heat to warm the roll paper 13 from the side.
Moisture absorption from both ends of the roll paper 13 is prevented. Similarly, an electrode plate 19 is provided below, a predetermined voltage is applied to the pattern 22 engraved on the substrate, and the heater 8 can generate heat therefrom via the terminal spring 10.

FIG. 4 is a plan view showing a state where the holder main body 1 is set on the housing 18. The space inside the housing 18 is partitioned by the pair of holder bodies 1 according to the width of the roll paper 13, and the dehumidifying effect of the dehumidifying heater 21 is improved. Further, as shown by an arrow F, the roll paper 13 can be effectively dehumidified from the side surface where the roll paper 13 easily absorbs moisture by heat conduction through the frame member 7 or heat generated by the heater 8. In other words, the frame member 7 also serves as a heat radiating means for releasing heat from the holder surface. Also, housing 1
8 Because it is independent of the heat source that warms the whole,
The amount of heat generated can be controlled according to the type of paper and the ambient temperature.

FIG. 5 is a side view of an embodiment in which the roll paper 13 can be supported by the spool 25. Also in the case, by separately providing the spool receiving portion 24 on the side plate, the holder and the spool can be selectively used. Therefore, users who use it less frequently use the holder. Conversely, in fields such as a large amount of use, such as a trader, use a spool,
A method suitable for the user can be applied.

FIG. 6 shows a fitting groove 20 provided in the housing 18.
FIG. 3 is a perspective view showing the shape of the slab. A hole 26 formed in the bottom surface of the housing 18 is for passing the terminal spring 10.

FIG. 7 is a sectional view showing the operation of the back tension mechanism. FIG. 7A shows a state where no load is applied (the holder main body 1 is not set). A receiving member 27 is provided at a lower end of the pressure spring 12. The receiving member 27 is formed so that a part thereof becomes thin, and when no load is applied, this part protrudes from the lower part of the holder main body 1 to release the pressure of the pressure spring 12. A pressure adjusting screw 2 is provided at the lower end of the protrusion.
8 is fastened. As shown in FIG. 7 (B), when the receiving member 27 is pushed up from the bottom surface of the housing 18 in the set state, the pressure of the pressure spring 12 is reduced.
1 and back tension is applied.

By changing the length of the pressure adjusting screw 28, the degree of back tension can be adjusted, and an appropriate load can be applied according to the weight, size, type of paper, etc. of the roll paper 13. . Also, fine adjustment of the deviation of the back tension load between the left and right holders is possible, and conversely, by giving a load deviation intentionally, more effective adjustment can be made for skew.

Further, the shape of the holder body 1 described above is a shape that can be used without distinction between left and right, and the number of parts can be reduced, which leads to improvement in serviceability and reliability.

[0026]

As described above, the roll paper holding device according to the first aspect of the present invention has two functions of fitting the roll paper holder and placing the roll paper in the housing to accommodate the roll paper when setting the roll paper. Only the procedure is simple, there is no need to handle a long roll paper spool as in the related art, and there is an effect that positioning is easy and no setting error occurs.

In the roll paper holding device according to the second aspect, as described above, one side of the holder is made smaller than the outer diameter of the stored roll paper when not in use.
In addition to the above common effects, by making the above one side a lower surface,
There is an effect that the holder can be set and fitted to the roll paper while the roll paper is placed on a flat surface such as a table without being lifted.

As described above, in the roll paper holding device according to the third aspect, the housing is provided with dehumidifying means for preventing the stored roll paper from absorbing moisture, and the roll paper holding device is fitted on both sides of the roll paper. By dividing the inside of the housing into a minimum space that matches the width of the roll paper with the holder, it is possible to enhance the dehumidifying effect without having to control the humidity in unnecessary spaces, in addition to the common effect described above. There is.

Since the roll paper holding device according to the fourth aspect has the back tension means in the holder as described above, it is necessary to provide the same means on the housing side in addition to the above-mentioned common effect. No, the configuration is simple,
This has the effect of improving reliability.

In the roll paper holding device according to the sixth aspect, as described above, since the back tension is applied by setting the holder in the housing, in addition to the above common effects, the holder is attached to the roll paper. , When removing,
There is an effect that the operability is improved because the holding portion rotates freely without load.

As described above, the roll paper holding device according to the seventh aspect has a structure in which the roll paper spool is attached to the housing, so that the holder and the spool can be selectively used in addition to the above-mentioned common effects. As a result, for example, there is an effect that a method more suitable for the user can be applied, such as a user who uses less frequently uses the holder, and a user who uses a large amount, in a field, uses a spool.

[Brief description of the drawings]

FIG. 1 is a front perspective view (A) and a rear transparent perspective view (B) of a roll paper holder that constitutes an embodiment of a roll paper holding device according to the present invention.

FIG. 2A is a cross-sectional view of the holder, and FIG. 2B is a cross-sectional view of a state in which roll paper is set and set in a housing.

FIG. 3 is a side view (A) and a cross-sectional view (B) when the holder main body is set on roll paper.

FIG. 4 is a plan view showing a state where a holder main body is set in the housing.

FIG. 5 is a side view of the embodiment in which roll paper can be supported by the spool.

FIG. 6 is a perspective view showing a shape of a fitting groove provided in a housing.

FIG. 7 is a sectional view showing the operation of the back tension mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Holder main body 1a Guide groove 2 Roll support part (flange) 3 Rib 4 Set surface 5 Projection 6 Handle 7 Frame material 8 Heater 9 Bracket 10 Terminal spring 11 Brake shoe 12 Pressure spring 13 Roll paper 14 Axis 15 Auxiliary bracket 16, 17 Bearing 18 Housing 19 Electrode plate 20 Fitting groove 21 Dehumidifying heater 22 Pattern 25 Spool 24 Spool receiving part 26 Hole 27 Receiving member 28 Pressure adjusting screw

Claims (6)

[Claims] 1. A roll paper holding device provided with a storage section for storing roll paper, comprising: a housing for storing roll paper; and a holder fitted to roll paper to be stored from both sides,
The holder is provided with a rotatable holder for supporting the inner diameter of the paper tube of the roll paper. Both holders fitted to the roll paper can be placed on the housing from above to hold and position the roll paper in the storage device. A roll paper holding device. 2. The roll paper holding device according to claim 1, wherein
A roll paper holding device, wherein at least one side of the holder does not project beyond the outer diameter of unused roll paper to be stored. 3. The roll paper holding device according to claim 1, wherein the housing is provided with dehumidifying means for preventing moisture absorption of the stored roll paper, and the holder fitted to both ends of the roll paper is provided. A roll paper holding device wherein the inside of the housing is divided into a minimum space corresponding to the width of the roll paper. 4. The roll paper holding device according to claim 1, wherein the holder has back tension means for applying a transport load for preventing skewing or slack when the roll paper is fed out. Characteristic roll paper holding device. 5. The roll paper holding device according to claim 4, wherein
The back tension means includes a brake member that supports the inner diameter of the paper tube of the roll paper and presses the outer peripheral portion of the cylinder of the holding portion, an urging member that presses the brake member, and a receiving member of the urging member. , These are aligned on a straight line,
One end of the receiving member protrudes from the lower surface of the holder, and when the holder is set, the protruding end of the receiving member is pushed in on the housing surface and the urging means contracts to press the brake member. A roll paper holding device, characterized in that: 6. The roll paper holding device according to claim 1, wherein the housing is provided with a receiving portion for a spool shaft of the roll paper so that the roll paper using a spool can be held. Roll paper holding device.