JPH0318197Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Technical field of the invention The present invention relates to a printer such as a wire dot printer, and particularly provides a media skew adjustment mechanism that can be adjusted to prevent skew when transporting media such as bankbooks. Regarding the printers provided.

(b) Background of the technology Recently, various devices have been developed and put into practical use as banking terminals, and among them, financial institution teller machines that can print out bankbooks and record journals are widely used. This bookkeeping machine usually uses a serial printer such as a wire dot printer.

Bankbooks, etc. printed by these printers tend to run skewed when they are transferred by the feed rollers within the device, reducing print quality, so it is desirable that the mechanism be easy to adjust to prevent skewing. .

(c) Prior Art and Problems The conventional method will be described below with reference to FIGS. 1 to 3, using a counter bookkeeping machine as an example. FIG. 1 is a perspective view illustrating a counter bookkeeping machine to which the present invention is applied;
FIG. 2 is a side view illustrating the conventional method, and FIG. 3 is a plan view illustrating FIG. 2.

As shown in FIG. 1, the teller bookkeeping machine has an insertion slot 1 in the center of the operation surface, and a passbook 10 is inserted horizontally along the operation surface. In front of the operation surface,
A keyboard 2 is arranged at the lower left in the figure, and buttons are used to enter the customer's account number and transaction details. Further, a display 3 is arranged at the upper right of the insertion slot 1, and the contents of the operation process are displayed one by one.

The counter recorder is connected online to a computer center (not shown).

Furthermore, as shown in FIG. 2, inside the counter bookkeeping machine, a conveyance path 4 is provided starting from the insertion port 1 at the left end, and a sensor S1 for detecting the passbook 10 inserted is arranged inside the insertion port 1. has been done. Sensor S1
is connected to a control section (not shown).

A feed roller R1 and a curved plate spring 5 that contacts and presses the feed roller R1 are provided to the right of the sensor S1.

The feed roller R1 is held by a lever 6 at its shaft, and the lever 6 is rotatably supported at a fulcrum 6a.A spring 6b and a plunger magnet PM are attached, and when the plunger magnet PM is excited and operated, , the leaf spring 5 is biased in the direction of arrow A in the figure, and at this time, a gear (not shown) coaxial with the feed roller R1 meshes with a gear of the drive source, making it rotatable.

When the plunger magnet PM is de-energized, the restoring force of the spring 6b causes the feed roller R1 to retract in the direction of arrow B and become open.

One end of the leaf spring 5 is fixed to a mounting portion (not shown), and is bent depending on the thickness of the bankbook 10 held between the curved surfaces that come into contact with the feed roller R1. Therefore, the leaf spring 5 has a predetermined pressure set thereto and also has the function of a pressing roller.

FIG. 2 shows a state in which the passbook 10 is already being held.

A platen 7 and a printing head 8 are provided facing each other with a gap in between on the right side of the feeding roller R1 and the leaf spring 5 in the drawing.

Furthermore, on the right side there is a feed roller R2 and a presser roller R3 that holds the passbook 10 between the feed roller R2 and the feed roller R2.
is provided. The feed roller R2 is connected to a drive source (not shown), and the shaft portion of the presser roller R3 is urged in the direction of the feed roller R2 by a spring (not shown), so that when the passbook 10 is fed and held, It moves backward against the elasticity of the spring.

As shown in FIG. 3, the feed rollers R1 and R2 are arranged at left and right positions on the bankbook 10 surface, respectively.

When the passbook 10 is transferred, the left side wall of the conveyance path 4 is used as the abutment surface 4a, and the left and right leaf springs 5 are used so that the left end surface of the passbook 10 is guided and sent.
The pressing force of is adjusted.

With this configuration, when printing on the bankbook 10, the operator inserts the bankbook 10 from the insertion slot 1 in the direction of arrow C in the figure, passes through the gap between the leaf spring 5 and the feed roller R1, and prints the bankbook 10 at a predetermined position. When the passbook 10 is inserted to the position, it is detected by a sensor (not shown) and the plunger magnet PM is excited, the feed roller R1 is closed, the passbook 10 is held between the plate spring 5, and rotation starts. and send in passbook 10. Then, the data recorded on the magnetic stripe on the back side of the passbook 10 is read by a magnetic head (not shown).

Furthermore, the bankbook 10 is fed to the printing position, and the printing head 8 is moved by the operator's operation of the keyboard 2.
is activated, and the details of the transaction are printed on the passbook 10.

When the printing is completed, the passbook 10 is retracted from the printing section by the reverse rotation of the feed rollers R1 and R2, the transaction details are written on the magnetic stripe of the passbook 10 using the magnetic head, and the transaction is inserted into the insertion slot 1 in the direction of arrow D. is discharged from.

In this way, insertion and printing of the passbook 10 can be performed.

However, according to this method, the elasticity of the left and right leaf springs 5 is adjusted by changing the curved shape of the leaf springs 5 using a tool such as flat pliers, and
Since the contact pressure with 1 is adjusted, the adjustment is delicate and not only requires skill, but also tends to be inaccurate and the adjustment work is troublesome and takes a lot of man-hours.

Therefore, the passbook 10 may not be correctly guided by the abutting surface 4a, and either the front end or the rear end of the passbook 10 may be sent in an oblique position while being separated from the abutting surface 4a, or the passbook 10 as a whole may be moved away from the abutting surface 4a by the arrow E in the figure. The printing position may become inaccurate due to skewed printing.

There is a drawback.

(d) Purpose of the invention The purpose of the present invention is to solve the above-mentioned drawbacks, and to provide a media skew adjustment mechanism that can be easily adjusted to prevent skew during transfer of media such as bankbooks. It is in.

(e) Structure of the invention The invention consists of a platen member, a printing section facing the platen member with a gap in between, a drive roller, and a plurality of springs provided at predetermined intervals opposite the drive roller. A printer that includes a drive roller and a spring and a medium transfer section that sandwiches a print medium and transfers it to a gap, and prints on the print medium that is transferred to a printing section by the medium transfer section, and the printer includes a plurality of springs. The printer includes a curved part that curves in a convex arc shape in the direction of the drive roller, and a pressure adjustment means that is provided at one end of the curved part and adjusts the pressing force that urges the curved part in the direction of the drive roller. It is.

Therefore, by adjusting the pressing force of the plurality of springs using the pressure adjustment means, it is possible to easily adjust the pressing force of the left and right springs that sandwich the printing medium at multiple locations with the drive roller, thereby preventing the printing medium from running skewed. can do.

(f) Embodiment of the invention An embodiment of the invention will be described below with reference to FIGS. 4 and 5. FIG. 4 is a side view showing an embodiment of the present invention, and FIG. 5 is an explanatory diagram of FIG. 4. The same reference numerals indicate the same objects throughout the figures.

As shown in FIG. 4, a circular arc portion 15a is formed on the right side of the leaf spring 15, and the approximately central portion of the circular arc portion 15a contacts the feed roller R1.

Further, a U-shaped portion 15b is bent at the left end of the leaf spring 15, and one end of the U-shaped portion 15b is fixed to the outer lower surface 4b of the conveyance path 4 by a mounting member 9.

The adjustment portion 11 is provided at a portion where the arcuate portion 15a and the U-shaped portion 15b are continuous.

The adjustment part 11 includes an adjustment screw 11a and a locking nut 11.
b and a threaded plate 11c fixed to the plate spring 15 by spot welding, for example, and an adjusting screw 11a is attached to the screw plate 11c, and an adjusting screw 1
A locking nut 11b is screwed onto 1a. The upper end surface of the adjusting screw 11a faces the outer lower surface 4b of the conveyance path 4, and comes into contact with the lower outer surface 4b of the adjusting screw 11a when the adjusting screw 11a is advanced.

As shown in FIG.
A slit 9a into which the U-shaped portion 15b of No. 5 is inserted is provided, and the bottom of the slit 9a is at the maximum pressing force setting position where the arcuate portion 15a contacts the feed roller R1.
The lower part of the U-shaped portion 15b serves as a stopper 9b to be held.

Such adjustment mechanisms are provided facing the left and right feed rollers R1 shown in FIG. 3, respectively.

With such a configuration, in FIG.
If the arc portion 15a of the leaf spring 15 is not in contact with the feed roller R1, the pressing force of the arcuate portion 15a of the leaf spring 15 in contact with the feed roller R1 is at its maximum. To adjust this, loosen the locking nut 11b and move the adjusting screw 11a forward. , when brought into contact with the outer lower surface 4b of the conveyance path 4 and further advanced,
Since the leaf spring 15 retreats in the direction of the arrow F using the stopper 9b as a fulcrum, the contact pressure with the feed roller R1 decreases, and the contact with the feed roller R1 is eventually released, resulting in a gap as shown by the two-dot chain line in the figure. can be changed until .

Then, tighten the nut 11b and adjust the adjustment screw 11.
a and the screw plate 11c are fixed, and the position of the leaf spring 15 is fixed.

Therefore, when transferring the passbook 10 in the direction of arrow C,
If there is a gap at the lower end of the passbook 10 guided by the abutting surface 4b and the passbook 10 becomes slanted, use the left leaf spring 1.
5 by increasing the pressing force with the adjustment screw 11a, or weakening the pressing force of the right leaf spring 15.

Also, when there is a gap at the upper end of the passbook 10 and the passbook 10 becomes slanted, or when the passbook 10 moves away from the abutment surface 4b,
When moving obliquely in the direction, the pressing force of the right leaf spring 15 may be increased, or the pressing force of the left leaf spring 15 may be weakened.

In this way, the pressing force of the leaf spring 15 can be easily adjusted using the adjustment screw 11a, and fine adjustment can be made, so that the skew can be adjusted and printing can be performed at the correct position.

(g) Effects of the invention As explained above, according to the invention, the pressing force of the spring facing the drive roller that transports the print medium can be changed by a simple mechanism.
This has the effect that skew feeding can be easily adjusted and fine adjustment is possible, and therefore skew feeding can be prevented and printing can be performed at the correct position.

[Brief explanation of the drawing]

Fig. 1 is a perspective view illustrating a counter accounting machine to which the present invention is applied, Fig. 2 is a side view illustrating a conventional method, Fig. 3 is a plan view illustrating Fig. 2, and Fig. 4 is a bookmarking machine. A side view showing an embodiment of the invention, FIG. 5 is an explanatory diagram of FIG. 4. In the figure, 1 is an insertion opening, 4 is a conveyance path, 4a is an abutting surface, 5 and 15 are leaf springs, 9 is a mounting member,
9a is slit, 9b is stoppa, 10 is passbook,
11 is an adjustment part, 11a is an adjustment screw, 11b is a locking nut, 11c is a screw plate, 15a is a circular arc part, 15
b indicates a U-shaped portion, R1 and R2 are feed rollers, and R3 is a presser roller.

Claims (1)

[Claims for Utility Model Registration] Consisting of a platen member, a printing section facing the platen member with a gap in between, a drive roller, and a plurality of springs facing the drive roller and provided at predetermined intervals, A printer comprising: a medium transport section that sandwiches a print medium between the drive roller and the spring and transports the print medium to the gap; and prints on the print medium transferred to the printing section by the medium transport section. The plurality of springs include a curved portion that curves in a convex arc shape in the direction of the drive roller, and a pressing force that is provided at one end of the curved portion and biases the curved portion in the direction of the drive roller. A printer characterized in that it is provided with pressure adjustment means for adjusting the pressure.