JPH08318651A - Printing centering mechanism of medium - Google Patents

Abstract

PURPOSE: To perform accurate printing centering even if the feed speed of a medium is increased and to increase a printing positioning processing speed. CONSTITUTION: The feed motor 22 driving upper and lower feed belts 10, 16 for feeding a medium C, the printing motor 30 driving the printing roller 28 of the printing part 24 arranged on the way of the upper and lower feed belts 10, 16 and the stopper 34 moved up and down at the printing centering position of the medium C on the downstream side of the printing part 24 are provided. After the medium C fed at the feed speed of the upper and lower feed belts 10, 16 is stopped by the stopper 34, the printing motor 30 is driven to apply printing to the medium C.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, for example, improves the positioning processing speed of a medium (count ticket, ticket, etc.) in printing the date of a ticket and the time of boarding a ticket in an automatic ticket gate. The present invention relates to a print position setting mechanism for a medium.

[0002]

2. Description of the Related Art Conventionally, in order to position a medium for printing, one drive motor is used to drive a conveyor belt and a drive source for a printing roller to be a platen, and the medium is conveyed by a conveyor belt at a speed of about 1 m / sec. The medium is detected by a photo sensor arranged in front of the thermal head (upstream side) located above the print roller, and the conveyance speed is reduced based on the detection signal to convey the medium for a predetermined time, thereby obtaining a predetermined print position. The motor was controlled so that

When printing on a medium, the thermal head is energized when the medium comes to a predetermined position (when the conveyance speed is reduced and a certain period of time elapses), and the print roller moves at a speed of about 62.5 mm / sec. Printing was performed by transporting the medium at.

That is, since the conventional medium transportation and printing speed driving are performed by controlling one driving motor used in combination, there is a large difference between the medium transportation speed and the printing speed, and a further speed difference. It was the current situation that it was not possible to deal with the situation by providing a motor control.

That is, the printing speed has a relationship with the energization time of the thermal head, and is 62.5 mm /
Since it cannot be performed at a speed of more than a second, the speed of transporting the medium must be increased in order to achieve even higher speeds. It is very difficult to deal with.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and is accurate even if the time until the print position of the medium is set short, that is, the medium transport speed is increased. It is an object of the present invention to provide a print position setting mechanism for a medium that can perform various print position adjustments, increase the processing speed up to the print position adjustment, and perform high-speed processing.

[0007]

In order to solve the above-mentioned problems, the present invention provides a transport motor (22) for driving an upper transport belt (10) and a lower transport belt (16) for transporting a medium (C). , A printing section (24) disposed in the middle of the upper conveyor belt (10) and the lower conveyor belt (16)
Print motor (30) for driving the print roller (28) of
And a stopper (34) that moves up and down at the position where the printing position of the medium (C) is set, on the downstream side of the printing unit (24), and the upper conveyor belt (10) and the lower conveyor belt (16) are provided.
After stopping the medium (C) conveyed at the conveyance speed of (3) by the stopper (34), the print motor (3)
0) was driven to perform printing on the medium (C).

[0008]

Function Even if the conveyed medium (C) is detected at a position on the upstream side of the printing unit (24), the speed is not reduced and the speed is 2 m.
Although it is conveyed at a speed of / sec as it is, the conveyance motor (22) is stopped and the conveyance of the medium (C) is stopped after a predetermined time (t) has elapsed since the medium (C) was detected. Transport speed 2m /
The stopper (34) is arranged at a position where the medium (C) of second is conveyed for a certain time (t), and the stopper (34) is raised by the detection of the medium (C), so that the medium is surely transferred. (C) is stopped at the position of the stopper (34). That is, the stopper (34) is arranged so as to come to the print position of the medium (C), and it is not necessary to slow down the conveyance speed of the medium (C) due to the presence of the stopper (34), and the medium is printed. The positioning processing speed will be improved.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to an embodiment shown in the drawings. 1 is a schematic front view of a medium print position setting mechanism according to the present invention, FIG. 2 is a schematic front view of FIG. 1 showing a section of a conveyor belt, and FIG. 3 is a timing chart showing the operation of each component.

[0010] (10) is an upper conveyor belt, which is an endless belt that is stretched around two rollers (12, 14). Further, (16) is a lower conveyor belt, which is an endless belt stretched between the driving roller (18) and the pinch roller (20). As shown in FIG. 2, each of the conveyor belts (10, 16) is made up of two belts having a narrow width divided into left and right, and a pair of upper and lower conveyor belts (10, 16) are provided at both ends of the medium (C). It is conveyed while being sandwiched between.

The drive roller (18) is driven by a conveyor motor (22), and the upper conveyor belt (10) and the lower conveyor belt (16) convey the medium (C) at a speed of about 2 m / sec.

A printing unit (24) has a thermal head (26) and a printing roller (28) which is a platen. The print roller (28) includes a print motor (3
0) and rotates at a speed of approximately 62.5 mm / sec.

A pair of photosensors (32) for detecting the medium (C) are provided on the upstream side, which is the front side of the printing section (24).
Is arranged. Further, a stopper (34) for positioning the printing position of the medium (C) having an L shape is arranged on the downstream side of the printing section (24), and the stopper (34) is connected to the electromagnetic solenoid (36). Has been done. In the electromagnetic solenoid (36), the photo sensor (32) is a medium (C).
When the thermal head (26) finishes printing (energization ends), it is turned off and the stopper (34) is lowered.

Next, the timing for printing the print position on the medium (C) will be described with reference to the timing charts of FIGS.

When a medium (C) such as a coupon ticket or a ticket is inserted into the automatic ticket gate, it is sandwiched between the upper conveyor belt (10) and the lower conveyor belt (16), and is moved from the right side to the left side in FIG. Be transported. The transport speed of this medium (C) is about 2
The speed is m / sec.

The conveyed medium (C) is printed by the printing unit (2).
When approaching 4), the presence or absence of the medium (C) is detected by the photo sensor (32). That is, since the medium (C) is positioned between the pair of photosensors (32),
The photo sensor (32) detects the presence or absence of the medium (C) by changing from the energized state (1 state) to the cutoff state (0 state).

The medium (C) is conveyed at a speed of 2 m / sec without slowing down even after being detected by the photosensor (32), but the medium (C) of the photosensor (32) is detected. After a certain time (t) has elapsed from then, the transport motor (22) is stopped and the transport of the medium (C) is stopped. The stopper (34) is arranged at a position where the medium (C) at a conveying speed of 2 m / sec is conveyed for a certain time (t), and the electromagnetic solenoid is detected by the detection of the medium (C) by the photo sensor (32). (36) is activated and the stopper (34)
Is raised, the medium (C) is reliably stopped at the position of the stopper (34). That is, the stopper (34) is arranged so as to come to the print position of the medium (C), and it is not necessary to reduce the conveyance speed of the medium (C) due to the presence of the stopper (34).

The print roller (28) is usually a medium (C).
The print motor (30) rotates at a speed of 1 m / sec, which is slower than the transport speed of the upper transport belt (10) and the lower transport belt (16) to prevent the jam of the upper transport belt (10) and the lower transport belt (10). The print motor (30) is temporarily stopped by stopping the conveyance of the lower conveyance belt (16) (stopping the conveyance motor).

When the print position of the medium (C) is set, the stopper (3
4), the thermal head (26) starts to be energized for printing, the print motor (30) rotates, and the print roller (28) moves to 6
Printing is started on the medium (C) by rotating at a speed of 2.5 mm / sec.

Medium (C) with a thermal head (26)
Upon completion of printing on, the print motor (30) receives the print end signal to increase the rotation speed, and the print roller (28) rotates at 1 m / sec to prevent jam of the medium (C). That is, in this embodiment, the print motor (30) is controlled to rotate the print roller (28) at a speed of 62.5 mm / sec and a speed of 1 m / sec. If the anti-jamming is not taken into consideration, it is not necessary to purposely control the speed of the printing roller (28) in two steps, and the two-step speed change of the printing roller (28) is not an essential requirement of the present invention, and at least the printing is performed. The speed is 62.
You may make it rotate only at the speed of 5 mm / sec.

Similarly, the transport motor (22) rotates upon receiving the print end signal, and the upper transport belt (10) and the lower transport belt (16) move at a speed of 2 m / sec to the medium (C).
To the discharge side.

[0022]

As described above, according to the present invention, a stopper is provided on the downstream side of the printing unit at the position where the printing position of the medium is set, so that a separate motor can be used without using the conveyance motor and the printing motor together. As a result, the medium transport speed can be increased from the conventional transport speed, and the medium print position can be reliably performed without lowering the transport speed in the vicinity of the printing section, and the medium print positioning processing speed is improved. To do.

[Brief description of drawings]

FIG. 1 is a schematic view showing a print position setting mechanism for a medium according to the present invention.

FIG. 2 is a schematic view seen from the front side in FIG.

FIG. 3 is a diagram showing a timing chart of a print position setting mechanism of the present invention.

[Explanation of symbols]

 10 Upper Conveying Belt 16 Lower Conveying Belt 22 Conveying Motor 24 Printing Section 26 Thermal Head 28 Printing Roller 30 Printing Motor 32 Photo Sensor 34 Stopper C Medium

Claims (3)

[Claims] 1. A conveyor motor (22) for driving an upper conveyor belt (10) and a lower conveyor belt (16) for conveying a medium (C), and the upper conveyor belt (10) and the lower conveyor belt (16). )
Of the printing roller (2) of the printing unit (24) arranged in the middle of
8) a print motor (30) for driving the print unit (24), and a stopper (34) which moves up and down to a position where the print position of the medium (C) comes to the print position downstream of the print unit (24). ) And the medium (C) conveyed at the conveying speed of the lower conveyor belt (16) by the stopper (34), and then the print motor (30).
A print position setting mechanism for a medium, characterized in that the medium is driven to drive printing. 2. The conveyance speed of the medium (C) by the upper conveyance belt (10) and the lower conveyance belt (16) is 2 m / sec, and the conveyance speed of the medium (C) by the print roller (28) is 62. The print position setting mechanism for the medium according to claim 1, wherein the print position setting mechanism is 0.5 mm / sec. 3. The conveyance speed of the medium (C) by the printing roller (28) is 62.5 mm / sec and 2 m / sec.
2. The medium print position determining mechanism according to claim 1, wherein the print motor (30) is controlled so as to perform a step shift.