JPH0275547A - Medium transfer device - Google Patents

Abstract

PURPOSE:To increase the precision of a feed quantity by setting the holding pressure of a feed roller at a position where the thickness of medium changes so as to prevent slipping and excessive feed. CONSTITUTION:In transferring the second half part of a bankbook 5a, a sensor S4 detects if the thickness of the bankbook 5a exceeds its maximum or minimum. If the thickness exceeds the maximum or minimum, a main control part 20 sends a transfer step number ST1 to a comparator part 19a. A computation part 18a computes a distance (step number) L1 from the position of a feed roller R2 to the position of a step in the bankbook 5a. A determining part 19b notifies need of pressure adjustment of the feed roller R2 to the main control part 20 at the time of L1<=ST1. Receiving a command from the main control part 20, the computation part 18a reduces a predetermined step number 'n' from the distance L1 and sends it to the main control part 20. The holding pressure on the bankbook 5a by the feed roller R2 and a presser roller R5 is thus reduced by a predetermined pressure. The bankbook is transferred at this holding pressure to the designated transfer step number ST1 for the rest (ST1-L1+n), where a printable line is set on a printer part for printing on the bankbook.

Description

[Detailed Description of the Invention] [Summary] To improve the accuracy of the amount of media fed, regarding a medium transfer device that can transfer portions of a passbook with different thicknesses by weakening the clamping pressure of the feed rollers when they pass through the feed rollers. The purpose of the present invention is to provide a media transporting device that has a pair of media transport devices that are arranged perpendicularly to the traveling direction of the media and have portions that protrude into the transport path and face each other and have different thicknesses. A medium transport device that transports the medium by pinching the medium inserted into a transport path by rollers with a predetermined pressing force and rotating the feed roller by a rotational drive means,
Thickness detection means detects the thickness of the medium at the position pinched by the feed roller, and when the thickness of the medium detected by the thickness detection means exceeds the upper and lower limits of a predetermined thickness range, The distance detecting means includes a distance detecting means for detecting the distance to a position where the thickness of the medium changes by the number of steps of the rotational drive means, and a pressure adjusting means for weakening the pressing force of the feed roller that clamps the medium by a predetermined pressure. When the number of distance steps detected by is less than or equal to the number of medium transfer steps commanded to the rotation drive means, the pressure regulating means moves the feed roller at the position where the medium has been transferred by a predetermined number of steps less than the number of distance steps. The structure is such that the pressing force is weakened and transferred.

[Industrial application field]

The present invention relates to a medium conveyance device such as a bookkeeping machine that writes transaction data on a print medium such as a passbook used in financial institutions, etc.
In particular, the present invention relates to a medium transfer device that can reduce the clamping pressure of the feed rollers when parts of a bankbook having different thicknesses pass through the feed rollers.

BACKGROUND ART Recently, as part of the combiator banking system, a bookkeeping machine operated by a teller at a counter has been widely used, and transaction data is entered in a medium such as a passbook.

When there are parts where the thickness changes, such as in a bankbook, the feeding amount increases or decreases due to overfeeding or slipping of the medium, which causes misalignment of the print position, so there is a strict requirement for print position accuracy. , a method to prevent this is desired. Particularly in the financial world, the number of pages in passbooks is increasing, and there is an urgent need to develop a method to accommodate this.

[Conventional technology]

Fig. 5 shows an example of a bookkeeping machine, which can be used to write a passbook 5a or a slip (
A device main body 2 includes an insertion slot 1 into which a bankbook (described below with a passbook) is inserted, a keyboard 3 for inputting the customer's account number and transaction details, and a display (hereinafter referred to as a CRT) on which operation processing details are displayed. 4). The device main body 2 is connected online to a computer center (not shown).

As shown in FIG. 6, inside the main body 2 of the apparatus, there is a conveyance path 61 continuing from the insertion opening l, and a feed roller R1- for conveying the passbook 5a.
R3゜pressing rollers R4 to R6, sensors S1 for detecting the leading and trailing ends of the inserted passbook 5a. S2. Reading sensor S3 for reading page barcodes and detecting already printed lines.
@A printer section 7 is provided on the feed path 6. Feed rollers R1 to R3 are connected to a stepping motor H1. The pressing roller R4 is connected to a plunger magnet (not shown), and is normally open and closed when the sensor S1 detects the inserted passbook 5a. Also, presser roller R
5 and R6 press the feed rollers R2 and R3 by levers and springs (not shown). (See Figure 8) Therefore, when the teller presses the bookkeeping mode button on the keyboard 3 and then inserts the passbook 5a from the insertion slot 1 in the direction of arrow A,
The sensor s1 detects the tip and conveyance is started. At this time, as shown in FIG. 7, the page is transported while being guided by a reference surface 60 on the left side wall of the transport path 6, and the reading sensor S3 recognizes the page barcode and determines the presence or absence of a hyphen in the already printed line. The passbook 5a is conveyed until the rear end of the passbook 5a is detected in S2, and the number of feeding steps from the last line to the printing position is edited and determined, and the printable position is determined by the printer unit 7.
The line is automatically set.

Next, when the details of the transaction, such as the deposit amount, are entered from the keyboard 3, the deposit balance is entered into the bankbook 5a by the printer section 7.

Bookkeeping including

When printing spans multiple lines, it is printed with a line feed.

When printing is completed, the passbook 5a is sent in the direction of arrow B and is ejected from the insertion slot 1.

In this way, entries are made in the passbook 5a.

[Problem to be solved by the invention]

According to the above-mentioned conventional method, when a thick medium such as a bankbook and having a step in the middle binding part is transported while being held between a feed roller and a presser roller, the printable position of the inserted bankbook is set in the printer section. In the case of transfer when printing a new line or when printing a new line, as shown in Figure 8, the thickness of the medium is suddenly released when the stepped part of the saddle stitching part of the passbook passes the feed roller and presser roller. As a result, a force is applied in the feed direction, causing the paper to be fed more than the specified amount, or when a thick part is applied to the feed roller, it may slip and the specified amount may not be fed, causing disturbances in the feeding amount, resulting in misalignment of the printing position. The problem is that it can cause

Disturbances in the feed amount vary depending on the material of the feed roller and presser roller, roller diameter, clamping pressure, feeding speed, thickness of the medium, etc., so conventional measures such as lowering the clamping pressure or increasing the roller diameter have been proposed. Measures are being taken, but the effects are not sufficient.

SUMMARY OF THE INVENTION An object of the present invention is to provide a medium transport device that can improve the accuracy of the amount of medium fed.

[Means to solve the problem]

FIG. 1 is a diagram showing the basic configuration of the present invention.

In the figure, 5 is a medium, 8 is a rotational drive means, 9°10 is a feed roller, 16 is a thickness detection means for detecting the thickness of the medium 5 at the position held between the feed rollers 9 and 10, and 18 is a thickness detection means. When the thickness of the medium 5 detected by the means 16 exceeds the upper and lower limits of the predetermined thickness range, the feed roller 9
, 10 detects the distance from the position where the thickness of the medium 5 changes by the number of steps of the rotary drive means 8; 13 sets the pressing force of the feed rollers 9 and 10 to clamp the medium 5 to a predetermined pressure; It is a pressure adjustment means that only weakens the pressure.

Therefore, when the number of distance steps detected by the distance detection means 18 is less than or equal to the number of transfer steps of the medium 5 commanded to the rotational drive means 8, the number of steps obtained by subtracting the predetermined number of steps from the number of distance steps is at the position where the medium 5 has been transferred. , the feed roller 9. by the pressure regulating means 13. It is configured to transfer while weakening the pressing force of lO.

[Effect]

When the medium 5 is pinched and transferred by the feed rollers 9 and 10, the thickness of the medium 5 at the position pinched by the feed rollers 9 and 10 is first detected by the thickness detection means 16, and the thickness is determined to be within a predetermined thickness range. If the thickness is within the upper and lower limits of the predetermined thickness range, the medium 5 is transferred as is, and if the thickness exceeds the upper and lower limits of the predetermined thickness range, the thickness of the medium 5 is changed from the position of the feed rollers 9 and 10 by the distance detection means 18. The distance to the position is detected by the number of steps of the rotary drive means 8.

If the detected distance exceeds the number of transfer steps of the medium 5 commanded to the rotation drive means 8, the medium 5 is transferred as is, and if it is less than the commanded number of transfer steps, the number of steps is subtracted by a predetermined number of steps from the number of steps of the distance. The feed rollers 9 and 10 are moved to the position where the medium 5 is transferred, that is, the position where the thickness of the medium 5 changes.
Immediately before the feed roller 9 is applied, the pressure adjusting means 13
, 10 is transferred by weakening the pressing force.

In this way, the clamping force of the feed rollers 9 and 10 is weakened at the position where the thickness of the medium 5 changes, so slipping and overfeeding can be prevented, and the accuracy of the feed amount can be improved.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 2 to 4. The same reference numerals indicate the same objects throughout the figures. In FIG. 2, parts corresponding to those in FIG. 1 are shown surrounded by a dashed line.

As shown in FIG. 2, a pulley lla is fixed to a shaft 9Qa of a feed roller R2, and an arm 11 is rotatably mounted on a shaft 90a.
One end is attached and the other end is the shaft 90b of pulley llb.
It is rotatably attached to. A stepping motor old is connected to the shaft 90b. Pulleys 11a, 11
A belt 14 is hung on b, and a stepping motor M1
The feed roller R2 is rotated by the drive.

Further, a lever 12 is provided at the other end of the arm 11 in a predetermined angular direction, and the tip of the lever 12 is connected to a plunger magnet (hereinafter referred to as PM) 13a and a spring 14, and the arm 11 is moved by excitation/release of the PM 13a. It swings in the directions of arrows C and D. Stopper 15 regulates the amount of swing of arm 11 that swings in the direction of arrow C.

Further, a shielding plate 16a of a predetermined width is provided on the shaft 91 of the presser roller R5, which is urged in the direction of the feed roller R2 by a lever 92a and a spring 92b, and transmissive optical sensors (hereinafter referred to as sensors) S4 are provided on the left and right sides of the shielding plate 16a. light emitting element 17
a, a light receiving element 17b is arranged. In the normal state, the shielding plate 16a shields the optical axis, and when the shielding plate 16a moves up and down due to the vertical movement of the shaft 91 and moves beyond a predetermined width, it is detected by the sensor S4. That is, in the passbook 1a, the step size of the middle binding part varies depending on the pages used, and when the shielding plate 16a moves upward and is detected, the page of the passbook 5a whose thickness is thinner than the predetermined thickness is placed at the position of the presser roller R5. When the shielding plate 16a moves downward and is detected, it is detected that a page of the bankbook 5a whose thickness is thicker than the predetermined thickness is located at the position of the presser roller R5.

Further, the calculation unit 18a calculates the distance (number of steps) Ll from the position of the feed roller R2 to the step position of the passbook 5a according to a command from the main control unit 20 based on the detection signal of the sensor S4, and also calculates the distance (number of steps) Ll from the position of the feed roller R2 to the step position of the passbook 5a. As a result of comparing the distance L1 and the number of transfer command steps 5TI (when setting to a printable line) and Si2 (when setting a line feed) in 19a, the determination unit 1
Distance L1≦transfer command step number STI, Si2 from 9b
When it is necessary to adjust the pressure of the feed roller R2, a predetermined number of steps n, for example 20 steps (1 step =
0.2 m). Setting sections 18b to 18
The length L of the bankbook 5a, the distance fl between the sensor S2 and the feed roller R2 (see FIG. 3), and the number of subtraction steps n are set in d, respectively.

That is, as shown in FIG. 3 (Ta), when the inserted passbook 5a is set, the distance L1 between the feed roller R2 and the step position when the sensor S2 detects the rear end of the passbook 5a is L1=! /iL
Calculate +11.

Further, at the first line feed, as shown in FIG. 3(b), the sensor S2 moves the number of transfer command steps ST
Since it is at the position I, the distance Ll between the feed roller R2 and the step position is Ll-STI ht, jl! Calculate 1.

At the second and subsequent line feeds, the command transfer step number ST2 is sequentially subtracted from this value.

The comparison unit 19a compares the distance L1 calculated by the calculation unit 18a and the number of transfer command steps ST1. Comparing Si2, the distance L
l≦Number of transfer command steps STI, Si2, or distance Ll≦
The number of transfer command steps STI and Si2 are notified to the determination unit 19b.

The determining unit 19b determines whether pressure adjustment of the feed roller R2 is necessary based on the notification of the comparison result from the comparing unit 19a, and notifies the main controller 20 of the determination.

Further, 8a is a rotational drive control unit, 21 is a sensor amplifier, 22
23 indicates a reading control section, and 23 indicates a swing control section.

Since it has such a configuration and function, the operation will be explained with reference to the flowchart of FIG. 4.

(1) First, the page marks and printed lines of the bankbook 5a inserted through the insertion slot 1 are detected, and the step number STI of the transfer distance from the rear end of the bankbook 5a to the printed line is determined. on the other hand,
During the transfer of the latter half of the passbook 5a, the sensor S4 detects whether the thickness of the passbook 5a exceeds the upper or lower limits.

■If the thickness does not exceed the upper and lower limits, the main control section 20 issues a transfer command of the number of transfer steps STI to the rotational drive control section 8a, and sets printable lines in the printer section 7 using the method explained in the conventional example. Bookkeeping is done.

(When printing a line feed, the line feed is performed using the line feed step number ST2 and the book is recorded.) ② If the thickness exceeds the upper and lower limits, the main control unit 20 sends the transfer step number STI to the comparison unit 19a.

■Also, the calculation unit 18a calculates the passbook 5 from the position of the feed roller R2.
Distance to the step position of a (number of steps) L1 = %L + 1
Calculate 1.

■The distance L1 is sent to the comparison section 19a, and the number of transfer steps S
It is compared with TI and notifies the determining unit 19b that L1≦STI or LL>STI.

(2) When L1≦STI, the determination unit 19b notifies the main control unit 20 of the need to adjust the pressure of the feed roller R2.

■According to the command from the main control unit 20, the calculation unit 18a calculates the distance L1
A predetermined number of steps n is subtracted from the subtracted value n, and the result is sent to the main control unit 20. The main control unit 20 sends the transfer step number STI to the rotation drive control unit 8a, rotates the feed roller R2 by the stepping motor M1 to start transferring the passbook 5a, and when the passbook 5a has been transferred by the subtracted number of steps Ll-n, the Dynamic control unit 2
3 to excite the PM 13a, swing it in the direction of arrow C, and stop it at the stopper 15.

That is, the passbook 5a is formed by the feed roller R2 and the presser roller R5.
The clamping pressure is weakened by a predetermined pressure.

(2) Using this clamping pressure, the number of transfer steps STI commanded is transferred, that is, the remaining amount (STI-Ll+n) is transferred, printable lines are set in the printer section 7, and bookkeeping is performed.

(2) Also, when ti>s'ri in (2), the main control unit 20 is notified that pressure adjustment is not required.

[Phase] The main control unit 20 sends the transfer step number STI to the rotational drive control unit 8a to instruct the rotational drive control unit 8a to transfer.
In step a, the transfer roller R2 moves the number of transfer steps STI, and the printable lines of the bankbook 5a are set in the printer section 7, and bookkeeping is performed.

■When printing multiple lines and performing line feed printing, if the thickness is detected by the sensor S4 at this point and the upper and lower limits of the thickness are not exceeded, the main controller 20 controls the rotational drive controller 8a.
The number of line feed pitch transfer steps ST2 is commanded.

(2) When the upper and lower limits of the thickness are exceeded, the main control section 20 sends the transfer step number ST2 to the comparison section 19a.

- The calculation unit 18a determines the position of the feed roller R2 by detecting the position of the passbook 5a using the sensor S3, and calculates the distance (number of steps) from the position of the feed roller R2 to the step position of the passbook 5a.
L1=STl! /1L-11 is calculated.

[Phase] The distance L1 is sent to the comparator 19a, where it is compared with the number of transfer steps ST2, and the determination unit 19b is notified that Ll≦ST2 or Ll>Si2.

(2) When L1≦ST2, the determination unit 19b repeats the flow from (2) onwards, adjusts the pressure, and performs a line feed at the line feed step number ST2.

When Ll>Si2 in [phase] or [phase], the main control unit 20 is notified that pressure adjustment is not necessary, and a line feed is performed at the line feed step number ST2.

In this way, when the difference in the middle of the passbook 5a is large,
By weakening the pressing force of the feed roller R2 immediately before saddle stitching, it is possible to prevent slippage and overfeeding, increase the precision of the feed amount, and prevent misalignment of the printing position.

In the above example, a case has been described in which the pressing force is weakened by swinging the feed roller R2, but the same effect can be obtained by swinging the presser roller R5.

〔Effect of the invention〕

As explained above, according to the present invention, when the medium is transported by the feed roller, the clamping pressure of the feed roller is weakened just before the position where the thickness of the medium changes, thereby preventing slippage at the position where the thickness changes. Since it is possible to prevent printing misalignment due to overfeeding or overfeeding, there is an effect that it is possible to increase the precision of the feeding amount and prevent printing position misalignment.

[Brief explanation of the drawing]

Fig. 1 is a diagram of the principle of the present invention; Fig. 2 is a block diagram showing an embodiment of the invention; Fig. 3 is an explanatory diagram of the embodiment; Fig. 4 is a flowchart of the embodiment; Fig. 5 is a bookkeeping machine. FIG. 8 is an explanatory diagram of transfer of a bankbook. In the figure, 5 is a medium, 5a is a passbook, 8 is a rotational drive means, 8a is a rotational drive control unit, 9, 1
0. R2 is a feed roller, 11 is an arm, 13 is a pressure adjustment means, 13a is a PM, 16 is a thickness detection means,
16a is a shielding plate, 18 is a distance detection means, 18a is a calculation unit, R5 is a presser roller, and S1 to S4 are sensors.卆also August's Courtesy Ode Karasuguchi certain j 2 4 (Mzi e month 0 dam brittle column 1-show U Tokushu V 徂) voice 2 e prison king f column florkemart % 4fia (so Q Sui 4 Mouth (deυ2) Qin 5 S Rate Otsu 6 BiP' letter Iro 5lt-tCsu1LiJth&yo% 7
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Claims (1)

[Scope of Claims] A pair of feed rollers (9, 10) clamps and presses the medium (5) inserted into the conveyance path, and rotates the feed rollers (9, 10) with a rotational drive means (8) to transport the medium (5). a thickness detection means (16) for detecting the thickness of the medium (5) at a position sandwiched by the feed rollers (9, 10); When the thickness of the medium (5) exceeds the upper and lower limits of the predetermined thickness range, the distance from the position of the feed rollers (9, 10) to the position where the thickness of the medium (5) changes is A distance detecting means (18) detecting by the number of steps of the means (8), and a pressure adjusting means (13) for weakening the pressing force of the feed rollers (9, 10) that clamps the medium (5) by a predetermined pressure. the medium (5), the number of distance steps detected by the distance detection means (18) being commanded to the rotational drive means (8);
), the pressing force of the feed rollers (9, 10) is weakened by the pressure adjusting means (13) at a position where the number of steps subtracted by a predetermined number of steps from the number of steps of the distance is transferred. What is claimed is: 1. A medium transfer device characterized in that the medium is transferred by