JPH05225403A - Medium pulling device - Google Patents

Abstract

PURPOSE:To surely pull a medium to a guide even when the medium is inclined against a medium pulling mechanism by recognizing the length, inclination, and inclining direction of the medium, and deciding a pulling position for the medium pulling mechanism. CONSTITUTION:A medium pulling positioning means 1 confirms the length, the inclination, and the inclining direction of the medium via a detecting means 6. In other words, the medium is carried by a carrier roller mechanism 12, and also, the built-in timer of a central processing unit 2 is operated. The time difference of detection signals from skew sensors 6a, 6b is measured by the built-in timer 5, and the time difference until the rear end of medium is detected after the tip of the medium is detected by a medium length detection sensor 6c is measured, thereby, medium length and the inclination angle of the medium can be found. The inclining direction of the medium can be discriminated by the order of detection by the skew sensors 6a, 6b. Then, the medium pulling position can be decided, and a medium carrier motor 9 is driven, and the positioning of the medium for the medium pulling mechanism 19 can be performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medium attracting device for attracting a medium such as a bankbook or a magnetic card to a reference end.

[0002]

2. Description of the Related Art Generally, when recording on a medium such as a bankbook or a magnetic card or reading information recorded on such a medium, it is necessary to draw the medium to a guide along a conveying path. ..

As such a medium attracting device, there is, for example, Japanese Utility Model Laid-Open No. 61-80746 filed by the present applicant. In the publication, clamp levers are arranged at the upper and lower positions of a frame so as to face each other, a presser for contacting a medium is formed at one end of both clamp levers, the other end is connected to a slide bracket, and the slide bracket is pressed There is disclosed a medium pulling mechanism that holds a medium by closing a child and pulls the medium from a frame while pulling the medium toward a guide when pulling the medium.

[0004]

In the conventional medium attracting device, the medium is attracted by grasping the balance of the medium, and when the medium is attracted, the central portion of the medium is nipped and attracted. If one end of the medium to be attracted contacts the guide when it is greatly inclined with respect to the mechanism, slippage occurs between the presser and the medium before the other end contacts the guide, and However, there is a problem that the medium cannot be drawn to the guide.

SUMMARY OF THE INVENTION An object of the present invention is to provide a medium pulling device capable of reliably pulling a medium to a guide even if the medium is largely tilted with respect to the medium pulling mechanism.

[0006]

In order to achieve the above object, in the medium attracting device of the present invention, the detecting means arranged along the medium conveying path, the length of the medium through the detecting means, and the medium And a direction in which the medium is tilted, the medium pulling position is determined, the medium feeding means is driven, and the medium pulling and positioning means for positioning the medium with respect to the medium pulling mechanism is provided.

[0007]

When a medium is conveyed by the medium conveying means of the medium attracting device constructed as described above, the medium attracting / positioning means causes the detecting means to detect the length of the medium, the inclination of the medium, and the inclination direction of the medium. Is recognized, the medium pulling position is determined, the medium conveying means is driven, and the medium is positioned with respect to the medium pulling mechanism.

Therefore, according to the present invention, the medium can be reliably attracted to the guide even if the medium is largely inclined with respect to the medium attracting mechanism.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. The elements common to the drawings are given the same reference numerals.

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. The medium attracting / positioning means 1 is composed of a microcomputer, and has a central processing unit 2 (hereinafter CPU 2).
And I / O port 4 (hereinafter referred to as I / O port 4). The CPU 2 has a built-in timer 5 and is connected to the memory 3 and the I / O port 4. The memory 3 is composed of a control program area 3a and a data area 3b, each of which stores a control program and data. The skew sensors 6a and 6b and the medium length detection sensor 6c as the detection means 6 and the drivers 7 and 8 are connected to the I / O port 4. A transport motor 9 and a solenoid 10 are connected to the drivers 7 and 8, respectively.
The medium attracting / positioning means 1 recognizes the length of the medium, the inclination of the medium, and the inclination direction of the medium via the detecting means 6, determines the medium attracting position, drives the transport motor 9, and pulls the medium to be described later. Position the media with respect to the mechanism. A stepping motor is used as the carry motor 9.

FIG. 2 is a plan view showing a mechanism portion of one embodiment, and FIG. 3 is a sectional view taken along the line AA of FIG. One embodiment of the present invention is a passbook slip printer that handles booklet-like media such as passbooks and single-paper media such as slips. The medium transport path is the frame 11
And a carrying roller mechanism 12 as a medium carrying means. Guides 13 and 14 are provided on both sides of the frame 11. The transport roller mechanism 12 has a shaft 15 as shown in FIG.
1, a feed roller 16 fixed to the shaft 17, a pressure roller 18 fixed to the shaft 17, a transmission unit (not shown), and the conveyance motor 9 shown in FIG. The transmission means includes an end of the shaft 15 to which the feed roller 16 is fixed and a pulley fixed to the motor shaft of the conveyance motor 9, or a gear and a belt.
A belt is wound around pulleys or gears. The feed roller 16 and the pressure roller 18 have their roller surfaces pressed against each other through a square hole (not shown) provided in the frame 11. Further, an optical sensor as the detection means 6 is arranged so that the light emitting side and the light receiving side face each other through a hole (not shown) provided in the frame 11 with the frame 11 sandwiched therebetween. As shown in FIG. 3, the medium pulling mechanism 19 provided on the guide 13 side includes a link 21 connected to the solenoid 10 by a shaft 20, a lever 22, and a clamp lever portion 24 that clamps the medium 23.
The lever 22 is rotatable about a shaft 25, and one end of the lever 22 is connected to the link 21 by a shaft 26. The clamp lever portion 24 includes a slide bracket 27, a clamp lever 28,
29 and a plate cam 30. Slide bracket 27
Has elongated holes 31a and 31b, and these elongated holes 31a and 31b
Can be fitted in the fixed shafts 32a and 32b and moved in the direction of arrows BC. One ends of the clamp levers 28 and 29 are rotatably connected to the center of the slide bracket 27 by shafts 33a and 33b, respectively. Clamp lever 28,
At the central portion of 29, rollers 34a and 34b are provided so as to face each other and are provided so as to slightly project inward.
8, 29 are drawn closer together. Slide bracket 2
A limiter post 36 is attached to the rear end of the lever 7, and the other end of the lever 22 is in contact with the limiter post 36.
A spring 37 is stretched between the lever 22 and the slide bracket 27 and attracts each other. Pressers 38 and 39 are formed at the other ends of the clamp levers 28 and 29 so as to face each other, and the medium 23 can be sandwiched through the square holes 40 provided in the frame 11. Plate cam 3
0 is a roller 33 attached to the clamp levers 28 and 29,
34 is in contact with the cam surfaces 30a and 30b. The reset spring 41 is stretched between the main body 42 and the lever 22 to pull the lever 22. When the solenoid 10 is turned on, the slide bracket 27 moves in the direction of arrow C, and the clamp levers 28, 29 draw the medium 23 by the clamp spring 35 and draw it toward the reference surface 13 a of the guide 13.

After the medium 23 is attracted to the reference surface 13a of the guide 13, the medium 13 is guided by the transport roller mechanism 12 to the guide 13.
Move along. The print head 43 prints on the medium 23 while moving in the arrow D-E direction.

FIG. 4 is an explanatory diagram for detecting the length, inclination and inclination direction of the medium. The medium 23 is transported in the direction of arrow F by the transport roller mechanism 12 and the built-in timer 5 of the CPU 2 shown in FIG. 1 is operated. When the medium 23 has an inclination, a time difference S ₁ sec occurs in the detection signals from the skew sensors 6a and 6b. This time difference is measured by the built-in timer 5. In addition, the time difference from the detection of the front end of the medium 23 by the medium length detection sensor 6c to the detection of the rear end thereof is S ₂ se
Also measure c. When the distance between the skew sensors 6a and 6b is Gmm and the medium conveyance speed is Vmm / sec, the medium length Lmm and the inclination angle θ of the medium can be obtained by the mathematical formula 1.

[0014]

[Equation 1]

[Equation 2]

The tilt direction of the medium 23 can be determined by the order in which the skew sensors 6a and 6b detect it. The inclination direction when the skew sensor 6a outputs the detection signal first is H, and the inclination direction when the skew sensor 6b outputs the detection signal first is I.

From these values, the medium attracting and positioning means 1
According to the table below, the front portion, the central portion, and the rear portion of the medium 23 shown in FIG.
Drive to position.

[0017]

[Table 1]

Here, the front portion, the central portion, and the rear portion are the positions where the medium 23 is divided into four equal parts. Table 1 is stored as a table in the data area 3b of the memory 3 shown in FIG.

As can be seen from the above table, the medium length L is 10
Even if it is less than 0 mm or 100 mm or more, the tilt angle θ is 3
When the angle is less than °, the central portion of the medium is set as the pulling position with respect to the medium pulling mechanism 19. Also, the medium length L is 100 m
When the tilt angle θ is 3 m or more and the tilt angle θ is 3 ° or more, the front or rear portion of the medium is set as the pulling position in consideration of the tilt direction. That is, the medium length L is less than 100 mm, or 1
If the inclination angle θ is less than 3 ° even if it is 00 mm or more, the medium can be attracted to the reference surface 13a of the guide 13 without slipping even if the central portion of the medium is attracted. Also, the front of the medium,
Alternatively, when the medium is attracted when the rear part is in the attracting position, the rear part or the front part on the side not in the attracting position first comes into contact with the reference surface 13a of the guide 13 to start the rotation operation. In this case, since the central portion of the medium is not set to the pulling position as in the conventional technique, the distance from the rotation fulcrum to the point of action of force is longer than that in the conventional technique, and the moment of the force acting on the medium is large. Reference surface 1 of guide 13 without causing slippage
It can be drawn to 3a.

Next, the operation will be described with reference to FIG.
FIG. 6 is a flowchart of one embodiment, which is executed by the CPU 2 shown in FIG. 1 using the control program and data in the memory 3. In step S ₁ , the CPU 2 starts detecting the medium length, the medium inclination, and the medium inclination direction. Step S ₂
Then, the CPU 2 starts the built-in timer 5. In step S ₃ , the CPU 2 drives the carry motor 9 to start carrying the medium 23 via the carry roller mechanism 12. Step S
_{In 4} , the CPU 2 detects whether or not the medium length detection sensor 6c is turned on, and if it is turned on, the process proceeds to step S ₅ .
In step S ₅ , the CPU 2 stores the timer value t ₁ at that time in the data area 3 b of the memory 3. C in step S ₆
The PU 2 senses whether or not the skew sensor 6a is turned on, and if it is turned on, the process proceeds to step S ₁₉ , and if not, the process proceeds to step S ₇ . In CPU2 Step S ₇ has sense whether a skew sensor 6b is turned on, when turned on proceeds to step S _8, in the case of the program returns to Step S _6. Step S ₈
Then, the CPU ₂ stores the timer value t ₂ at that time in the data area 3b of the memory 3. In step S ₉ , the CPU 2 senses whether or not the skew sensor 6a is turned on, and when it is turned on, the process proceeds to step S ₁₀ . In Step S ₁₀ CPU 2 stores the timer value t ₃ at that time to the data area 3b in the memory 3. In step S ₁₁ , the CPU 2 sets the medium 2
The inclination direction of 3 is "I", and the data area 3 of the memory 3 is
Store in b. In step S ₁₂ , the CPU ₂ reads the timer values t ₂ and t ₃ from the memory 3 and the time difference S ₁ = t ₃ −t.
₂ is obtained, and the medium transport speed V is further calculated from the data area 3b.
Also, the value of the distance G between the skew sensors 6a and 6b is read out, and the tilt angle θ of the medium is obtained based on Equation 2. The calculated tilt angle θ of the medium is stored in the data area 3b of the memory 3. In step S ₁₃ , the CPU 2 causes the medium length detection sensor 6
It senses whether or not c is off, and when it is off, the process proceeds to step S ₁₄ . In step S ₁₄ , the CPU 2 stores the timer value t ₄ at that time in a register (not shown) and stops the carry motor 9. Step S ₁₅ in the CPU2 memory 3
The value of the timer value t ₁ medium transport speed V is read from the data area 3b of FIG. C in step S ₁₆
PU2 stops the built-in timer 5. Step S ₁₇
Then, the CPU 2 stores the table corresponding to Table 1 stored in the memory 3, the medium length L calculated and stored in the memory 3,
The pulling position is determined by comparing the tilt angle θ of the medium and the tilt direction. In step S ₁₈ , the CPU 2 drives the carry motor 9 to drive the carry roller mechanism 12 so that the medium 23 is stopped at the drawing position with respect to the medium drawing mechanism 19. Then, the solenoid 10 is turned on so that the medium 23 is attracted to the reference surface 13 of the guide 13 and brought into contact therewith. This completes the medium pulling operation, but thereafter the medium 23 is transported along the guide 13 by the transport roller mechanism 12 and printed by the print head 43.

[0021] If the process proceeds from step S ₆ to step S _19, the step S ₁₉ in the CPU2 the timer value t at that time
₂ is stored in the memory 3. In step S ₂₀ CPU 2 is to sense whether a skew sensor 6b is on or, in the case of on-the process proceeds to step S _21. CPU in step S ₂₁
2 stores the timer value t ₃ at that time in the memory 3. Tilt direction of the step S ₂₂ in CPU2 is medium 23 is stored in the memory 3 as H, the flow returns to step S _12.

In this embodiment, the medium attracting position is set to the above-mentioned central portion and the rear portion. You may make it determine the position which is efficient in approaching.

Further, although two optical sensors are arranged as the skew sensors, three or more optical sensors may be arranged depending on the width of the medium.

Further, instead of the optical sensor, an image sensor or O
The tilt angle and the tilt direction of the medium may be detected by CR.

[0025]

Since the present invention is configured as described above, it has the following effects.

By providing the medium attracting and positioning means for recognizing the length of the medium, the inclination of the medium, and the inclination direction of the medium, and determining the attracting position with respect to the medium attracting mechanism, the most efficient medium attracting is achieved. Since the attraction can be performed at the position, there is an effect that the medium can be reliably attracted to the guide along the transport path.

The present invention can be applied to a device such as a card reader that requires a medium pulling operation.

[Brief description of drawings]

FIG. 1 is a configuration block diagram showing an embodiment of the present invention.

FIG. 2 is a plan view of the mechanism of the embodiment.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is an explanatory diagram for detecting the length, tilt, and tilt direction of a medium.

FIG. 5 is a plan view of the medium showing a drawing position.

FIG. 6 is a flowchart of an example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Medium attracting / positioning means 6 Detecting means 6a, 6b Skew sensor 6c Medium length detecting sensor 12 Conveying roller mechanism 13 Guide 13a Reference surface 19 Medium attracting mechanism

Claims (1)

[Claims] 1. A medium pulling device for determining a pulling position of a medium with respect to a medium pulling mechanism and pulling the medium to a guide along the transporting path, and a detecting means arranged along the medium transporting path, A medium for recognizing the length of the medium, the inclination of the medium, and the inclination direction of the medium through the detecting means, determining the medium pulling position, driving the medium conveying means, and positioning the medium with respect to the medium pulling mechanism. A medium attracting device comprising attracting and positioning means.