JP2000034048A - Sheet recovery device for printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent any paper jam from occurring and simultaneously to make the bottom area of a sheet recovery storage reducible. SOLUTION: A sheet 1a cut in a sheet unit at a cutting part 7, printed in a printing part 6 is conveyed to a sheet issuing port by a sheet conveyor belt 10 and a driven belt 16, and in time of sheet recovering, the sheet 1a is drawn in with the sheet conveyor belt 10 reversely turned and the driven belt 16, and this drawn-in sheet 1a is receovered into a sheet recovery storage 24 by a separator 2. At this time, any curl put on the sheet 1a is straightened by a recovery roller 28 and a press roller 30 installed in a driving shaft 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a sheet collecting apparatus for a printing apparatus for collecting, as necessary, a sheet on which data is printed.

[0002]

2. Description of the Related Art Conventionally, after printing data on roll paper, the roll paper is cut into sheets, and the cut sheets are issued from a sheet issuing port, or the issued sheets are collected in a sheet collection box. There is a printing device. As an example of using such a printing device, for example, an ATM (Automatic Teller Mac) used in a post office, a bank, or the like is used.
hine).

In this ATM, a voucher (sheet) on which data such as a cash payment amount or a deposit amount is printed is issued to a customer, but if the customer forgets to take the voucher, the issuance outlet is issued. Is collected in a sheet collection box.

Hereinafter, the structure of a conventional sheet collecting apparatus will be described with reference to FIG. First, a schematic configuration of the printing device P attached to the ATM will be described. A supply shaft 2 that supports the roll paper 1 and a roll paper transport belt 3 that opposes below the supply shaft 2 are provided. A printing unit 6 including a platen 4 and a thermal head 5 pressed against the platen 4 is provided on the downstream side of the roll paper transport belt 3. Is provided with a cutting unit 7 for cutting into units. On the downstream side of the cutting section 7, a conveying roller 8 for conveying the cut sheet 1a and a pinch roller 9 pressed against the conveying roller 8 are provided.

A sheet conveying belt 10 is provided downstream of the conveying roller 8. This sheet conveying belt 10
Is formed by winding an endless belt 14 around a pulley 12 fixedly provided on a drive shaft 11 and a pulley 13 arranged near a sheet issuing port (not shown). Reference numeral 15 denotes a pinch roller for pressing the belt 14 against the pulley 13. The sheet 1a is moved to the sheet conveying belt 10
The driven belt 16 which is in pressure contact with the
Is formed by winding an endless belt 19. An arm 20 has a pinch roller 21 for pressing the pulleys 17 and 18 and the belt 14.
And are rotatably supported.

Further, a guide plate 22 for holding the upper surface of the sheet 1a is fixedly provided between the conveying roller 8 and the sheet conveying belt 10.
The separator 23 which supports a from below is provided. The separator 23 has a guide surface 25 that guides the sheet 1a conveyed by the sheet conveyance belt 10 from the sheet issuing port to the sheet collection storage 24 when the conveyance roller 8 and the sheet conveyance belt 10 are rotated in the clockwise direction. Have.
That is, the separator 23 is connected to the rotating shaft 2 of the conveying roller 8.
6 rotatably supported. A spring (not shown) for transmitting the rotating force of the rotating shaft 26 to the separator 23 is attached to the rotating shaft 26.

In this embodiment, the rotating shaft 26 of the conveying roller 8 and the driving shaft 11 of the sheet conveying belt 10 are used.
Are connected to a common forward / reverse rotatable motor. Also, the cutting section 7 and the drive shaft 11
An opening surface 24a is formed to open a region between them.

In such a configuration, the roll paper 1 is set between the platen 4 and the thermal head 5, and desired data is printed by the thermal head 5. The printed roll paper 1 is conveyed by the platen 4 and cut by the cutting unit 7 into units of the sheet 1a. Cut sheet 1
“a” is conveyed toward the sheet issuing port by driving the conveyance roller 8 and the sheet conveyance belt 10 to rotate forward in the counterclockwise direction. At this time, the separator 23 receives the rotational force of the rotating shaft 26 via a spring, and the free end of the separator 23 has the drive shaft 1.
1 and guides the sheet 1a downstream with respect to the guide plate 22.

The sheet 1a issued to the sheet issuing port is detected by a sensor (not shown). If the output time of the detection signal exceeds a certain value, it is recognized that the customer has forgotten to take the sheet 1a. Then, the sheet 1a is collected.

At the time of collection, the sheet transport belt 1
0 and the transport roller 8 are driven to rotate in the reverse direction clockwise. At this time, the clockwise rotational force of the rotating shaft 26 is transmitted to the separator 23 via a spring,
Rotates clockwise, and stops at a position where the free end abuts on the shaft of the pulley 17. The state shown in FIG. 7 shows the position of the separator 23 at the time of sheet collection. As a result, the sheet 1a is guided by the guide surface 25 of the separator 23 and is collected in the sheet collection storage 24.

[0011]

The roll paper 1
Has a curl. Since the winding habit increases as the winding diameter decreases, the winding habit remains even when the roll paper 1 is cut into sheets. In the above configuration, the sheet 1a has a curl in a direction in which the upper surface is depressed. At the time of sheet collection, the sheet 1a is curved in the direction in which the lower surface is temporarily depressed when the direction is changed by the guide surface 25 of the separator 23 while being conveyed by the sheet conveyance belt 10 and the driven belt 16 driven in the reverse direction. Sheet conveying belt 10 and driven belt 16
As the distance at which the end of the sheet 1a separates from the contact portion with the sheet becomes longer, the sheet 1a returns to a state in which the upper surface is curved in a direction in which the upper surface is depressed due to a curl. Therefore, it becomes impossible to orderly stack the sheets 1a on the sheet collection storage 24. As a result, there is a problem that it is difficult to collect the sheet 1a collected later, and a jam occurs. In addition, there is a problem that the sheet collection storage 24 must be enlarged in order to increase the collection capacity of the sheets 1a.

[0012]

According to the first aspect of the present invention,
The roll paper on which the data is printed by the printing unit is cut into sheet units by the cutting unit, and the cut sheet is nipped by a forwardly driven sheet transport belt and a driven belt pressed against the sheet transport belt to hold the sheet. Conveyed to the issuing port, and when the sheet is left in the sheet issuing port for a certain period of time or more, while nipping the sheet by the sheet transport belt and the driven belt that are driven in reverse rotation and pulling the sheet from the sheet issuing port In a sheet collecting apparatus of a printing apparatus for collecting and guiding a drawn sheet toward a sheet collecting box by a separator, the sheet transport belt includes a drive shaft arranged near an opening surface of the sheet collecting box. On the axis of the drive shaft, the drive shaft contacts the sheet at a position not in contact with the driven belt, and rotates integrally with the drive shaft. A collection roller is disposed at a position deviating from the contact surface between the sheet conveying belt and the driven belt toward the sheet collection box when the sheet is guided to the sheet collection box by the separator. And a pressing roller for bending the sheet in a direction to correct the curl of the roll paper while nipping the sheet between them.

Therefore, at the time of sheet recovery, the sheet is nipped and pulled by the sheet transport belt driven by the reverse rotation and the driven belt, but the portion on the sheet recovery box side is pressed by the pressing roller to the recovery roller over a predetermined length. Since the sheet is wound, it is possible to correct the curl of the roll paper attached to the sheet.

According to a second aspect of the present invention, in the first aspect of the present invention, the outer diameter of the collection roller is set to an outer diameter that rotates at a peripheral speed higher than the peripheral speed of the sheet conveying belt.

Therefore, when a sheet is collected by the sheet conveying belt and the driven belt, the sheet portion on the sheet collection storage side is pulled by a collection roller and a pressing roller having a high peripheral speed to be handled. The sheet can be bent in a direction to correct the curl.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. The same parts as those described in FIG. 7 are denoted by the same reference numerals, and description thereof is omitted. 1 is a longitudinal sectional side view showing a state at the time of sheet issuance, FIG. 2 is a partial perspective view showing a state at the time of sheet issuance, FIG. 3 is a partial perspective view showing a state at the time of sheet collection, and FIG. FIG. 5 is a partial longitudinal side view showing a state at the time of issuing a sheet, FIG. 5 is a partial longitudinal side view showing a state at the time of collecting a sheet, and FIG. is there.

The printing device P in the present embodiment is also an ATM.
The supply shaft 2 supporting the roll paper 1, the roll paper transport belt 3, the printing unit 6, and the transport roller 8 each having the same configuration as that described with reference to FIG.
And a pinch roller 9, a sheet conveying belt 10, a driven belt 16, a guide plate 22, and a sheet collection storage 24.

The separator 27 in the present embodiment, which is opposed to the lower side of the guide plate 22,
6 rotatably supported. A spring (not shown) for transmitting the rotating force of the rotating shaft 26 to the separator 27 is mounted on the rotating shaft 26. In this embodiment, the rotation shaft 26 of the conveyance roller 8 and the drive shaft 11 of the sheet conveyance belt 10 are connected to a common forward / reverse rotatable motor.

Further, as shown in FIGS. 2 and 3, the drive shaft 11 of the sheet conveying belt 10 in the present embodiment is provided with a pulley 12 for winding a belt 14 at a central portion thereof. Are fixedly provided on both sides of the roller. The outer diameter of these collection rollers 28 is set to rotate at a higher peripheral speed than the peripheral speed of the belt 14.
The outer diameter is set to be larger than the value obtained by adding the thickness of the pulley 12 to twice the thickness of the belt 14.

Then, the sheet collection box 2 is moved from the contact surface 29 (see FIG. 6) between the sheet conveying belt 10 and the driven belt 16.
When the sheet 1a is guided by the separator 27 to the sheet collection container 24, the sheet 1a is sandwiched between the sheet 1a and the collection roller 28 at the position deviated to the side 4 to remove the sheet 1a from the curl of the roll paper 1. A press roller 30 that bends in the direction of correction is provided. These holding rollers 30
Roller arm 3 rotatably supported by fulcrum shaft 31
The two free ends are rotatably supported.

In such a configuration, the sheet 1a on which data is printed by the printing unit 6 and which is cut in sheet units by the cutting unit 7 is driven by driving the conveying roller 8 and the sheet conveying belt 10 in a counterclockwise direction. The sheet is conveyed toward the sheet issuing port. At this time, as shown in FIGS. 1, 2 and 4, the separator 27 receives the rotational force of the rotating shaft 26 via a spring and stops at a position where the free end abuts on the driving shaft 11, and the guide plate 22 and guides the sheet 1a downstream. At the time of this sheet issuance, the sheet 1a is the belt 1
The portions on both sides of the rollers 4 and 19 come into contact with the collecting roller 28 which rotates integrally with the drive shaft 11, but are not pressed against the collecting roller 28, and are conveyed at a speed corresponding to the peripheral speed of the belt 14.

When collecting the sheet 1a emitted from the sheet issuing port, the sheet conveying belt 10 and the conveying roller 8 are rotated clockwise. At this time, the clockwise rotational force of the rotating shaft 26 is transmitted to the separator 27 via the spring, and the separator 27 rotates clockwise,
As shown in FIG. 5, the free end is stopped at a position where the free end abuts on the shaft of the pulley 17. As a result, the sheet 1a is guided by the free end of the separator 27 and collected in the sheet collection storage 24.

At this time, the sheet 1a is nipped and pulled by the sheet transport belt 10 driven by the reverse rotation and the driven belt 16, and the portion on the sheet collection box 24 side is collected by the pressing roller 30 over a predetermined length. Since the sheet 1a is wound around the roller 28, the sheet 1a is curved in a direction in which the lower surface is depressed, and the curl of the roll paper 1 on the sheet 1a can be corrected.

This can be obtained even in a configuration in which the arrangement of the components on the transport path of the roll paper 1 and the sheet 1a is replaced in the vertical direction, that is, in a configuration in which the configuration shown in FIG. 1 is turned upside down. be able to.

Further, since the outer diameter of the collecting roller 28 is determined to be an outer diameter rotating at a peripheral speed higher than the peripheral speed of the sheet conveying belt 10, the sheet 1a is collected by the sheet conveying belt 10 and the driven belt 16. At this time, the sheet 1a on the side of the sheet collection box 24 is pulled and handled by the collection roller 28 and the pressing roller 30 having a high peripheral speed, and the sheet 1a is bent in a direction to correct the curl. be able to. Thereby, the curl correction effect of the sheet 1a can be further promoted.

[0026]

According to the first aspect of the present invention, there is provided a sheet transport belt which cuts a roll paper on which data is printed by a printing unit into sheet units by a cutting unit, and drives the cut sheet in a normal rotation, and the sheet transport belt. The sheet is conveyed to the sheet issuance port by being nipped by the driven belt pressed against the belt, and when the sheet is left in the sheet issuance port for a certain period of time or more, the sheet conveyance belt and the driven belt that are driven to rotate in the reverse direction are used. In a sheet collection device of a printing device for holding and pulling the sheet from the sheet issuing port and guiding the drawn sheet toward a sheet collection store by a separator, the sheet transport belt is provided in the sheet collection store. Comprising a drive shaft arranged near the opening surface,
A collection roller that contacts the sheet at a position that does not contact the driven belt and that rotates integrally with the drive shaft is disposed on the axis of the drive shaft, and a contact surface between the sheet transport belt and the driven belt. When the sheet is guided to the sheet collection box by the separator, the sheet is sandwiched between the sheet and the collection roller, and the sheet is wound around the roll paper. A press roller that bends in the direction to correct the habit is arranged, so that when the sheet is collected, the sheet is nipped and pulled in by the sheet transport belt driven by the reverse rotation and the driven belt, but the sheet collection side is pressed. Because it is wound around the collection roller over a predetermined length by the roller,
The curl of the roll paper attached to the sheet can be corrected.

According to a second aspect of the present invention, in the first aspect of the present invention, the outer diameter of the collection roller is determined to be an outer diameter rotating at a peripheral speed higher than the peripheral speed of the sheet conveying belt. When the sheet is collected by the sheet conveying belt and the driven belt, the curl is corrected in a state in which the sheet portion on the sheet collection storage side is pulled and handled by a collection roller and a pressing roller having a high peripheral speed, and is handled. The sheet can be bent in the direction. Thereby, the effect of correcting the curl of the sheet can be further promoted.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view showing a state when a sheet is issued according to an embodiment of the present invention.

FIG. 2 is a partial perspective view showing a state when a sheet is issued.

FIG. 3 is a partial perspective view showing a state at the time of sheet collection.

FIG. 4 is a partial longitudinal side view showing a state when a sheet is issued.

FIG. 5 is a partial longitudinal side view showing a state at the time of sheet recovery.

FIG. 6 is a partial vertical cross-sectional side view showing an enlarged state at the time of sheet collection.

FIG. 7 is a vertical sectional side view showing a conventional example.

[Explanation of symbols]

 P Printing apparatus 1 Roll paper 6 Printing section 7 Cutting section 10 Sheet transport belt 16 Follower belt 24 Sheet collection chamber 24a Opening surface 27 Separator 28 Collection roller 29 Contact surface 30 Pressing roller

Claims (2)

[Claims] 1. A roll paper on which data is printed by a printing unit is cut by a cutting unit into sheets, and the cut sheet is driven forward by a sheet conveying belt and a driven belt pressed against the sheet conveying belt. The sheet is conveyed to a sheet issuing port, and when the sheet is left in the sheet issuing port for a certain period of time or longer, the sheet is nipped by the sheet conveying belt and the driven belt that are driven to rotate in reverse. In the sheet collection device of the printing apparatus, which pulls in the sheet from the issuing port and guides the drawn-in sheet toward the sheet collection box by the separator, and collects the sheet, the sheet transport belt is disposed near an opening surface of the sheet collection box. A drive shaft, wherein the drive shaft contacts the sheet at a position not in contact with the driven belt on the axis of the drive shaft. When the sheet is guided to the sheet collection box by the separator at a position off the sheet collection box side from the contact surface between the sheet conveyance belt and the driven belt, a collection roller that rotates integrally is disposed. And a pressing roller for holding the sheet between the collecting roller and bending the sheet in a direction to correct the curl of the roll paper. 2. The sheet collecting apparatus according to claim 1, wherein an outer diameter of the collecting roller is set to an outer diameter that rotates at a peripheral speed higher than a peripheral speed of the sheet conveying belt.