JPS5848139Y2 - Form printing device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a form printing device used for printing on non-continuous media such as bankbooks and slips.

In a device for printing sales details on sales slips in a department store or the like, a printing device that is easy to handle and operate is desired so that anyone, not a full-time operator, can easily operate it.

In addition, sales slips for gift items such as gift items are often copied in large numbers at the same time, and the present invention provides a device that can handle media with inconsistent thickness. be.

That is, according to the present invention, the slips are automatically set at the printing position simply by inserting them until they hit the stopper, and furthermore, after printing, the slips are automatically held so that they do not fly away.

Furthermore, even if the number or thickness of the media to be printed changes, good print quality can be obtained without requiring any adjustment.

Next, details of the present invention will be explained based on illustrated embodiments.

FIG. 1 is a plan view of the form printing device, and FIG. 2 is a side view.

1 is a frame that moves up and down around axis 2 at the left end,
A medium feed roller 3 and a platen 4 are attached to the frame 1.

A stopper operating rod 5 is provided at the right end of the frame, and the frame 1 is pulled down by a tension coil spring 6.

An L-shaped lever 8 is supported on a shaft 7 fixed to the main body of the device, and the left end of the lever is connected to the frame 1 with a pin 9.
The other end is connected to a movable iron core of an electromagnet 11 by a pin 10.

Therefore, when the electromagnet 11 is not energized, the frame 1 is pulled down by the spring 6 as shown by the two-dot chain line, and the platen 4, feed roller 3, and operating rod 5 are in a lowered state.

When the electromagnet is energized, the L-shaped lever 8 rotates clockwise to push up the frame 1, and the platen 4, feed roller 3, and operating rod 5 are raised as shown by solid lines.

A pinch plate 12 is fixedly provided above the feed roller 3, and a print head 13 is provided above the platen 4.

A medium 14 such as a slip is placed on the left guide plate 15 and pushed into the printing section with a finger.

Then, the medium 14 passes between the platen 4 and the print head 13, between the feed roller 3 and the pinch plate 12, and reaches the stopper 1.
I hit 6.

The printed medium is ejected between the right delivery side guide plate 17 of the platen 3 and the plate 18 above it.
A stopper plate 19 integral with the stopper 16 is supported by a shaft 20 on the plate 18 of the receiver.

This stopper plate 19 is pressed down by a weak spring 21, and the stopper plate 19 can be pushed up from below by a stopper operating rod 5.

However, as shown in FIG. 1, the stopper operating rod 5 is provided outside the medium passage 22 so that the stopper operating rod 5 does not interfere with the movement of the medium.

Normally, that is, when the electromagnet 11 is not energized, the stopper operating rod 5 descends as described above, so the stopper plate 19 also descends as shown by the chain line, and the stopper 16
plunges downward into the medium passage 22.

Since the medium is inserted in this state, when the medium is inserted as indicated by 14', the leading edge of the medium hits the stopper 16 and the first print line comes directly below the print head 13.

The media setting is now complete, and when you press the print start button,
Electromagnet 11 is energized and pushes frame 1 up to the solid line position.

Therefore, the stopper 16 is pushed up by the operating rod 5 to open the medium path 22, and the feed roller 3 presses the medium 14' against the pinch plate 12 and rotates, thereby feeding the paper.

Further, the print head 13, which moves in the direction of the platen 4 (in the direction of the arrow a1 in FIG. 1), prints sales information and the like on the medium 14' on the platen 4 in synchronization with the paper feed.

Printing progresses in this manner, and when the final printing of the total column and the like is completed, the electromagnet 11 is de-energized by the signal, and the frame 1 is lowered to the position shown by the chain line.

As a result, the feed roller 3 and platen 4 descend to a non-printing state, and as the operating rod 5 descends, the stopper 16 also descends.

However, the stopper 16 rests on the medium under which printing has been completed, and presses the medium with the force of the spring 21, thereby preventing the printed medium from scattering.

Since the spring 21 pushing the stopper 16 is weak, the medium under the stopper can be easily pulled out in the direction of arrow a2 or a3 in FIG. 1, for example.

After removing the medium, the stopper 16 closes the medium passage as shown by the dashed line in FIG. 2 to prepare for positioning the next inserted medium.

As described above, according to the present invention, a stopper is provided in the middle of the medium path to define the ejecting position, and the stopper is retracted out of the medium path by the operating rod when the medium is inserted into the printing section and printing starts. When printing is completed, the stopper is lowered by retracting the operating rod and holds down the medium on which printing has been completed to prevent it from scattering.

Therefore, it is very convenient for the operator, and the stopper also serves as a scatter prevention function, and the stopper operating rod 5 is driven by the same mechanism together with the feed roller 3 and platen 4, which makes the configuration complicated and costs high. There's no fear.

Furthermore, since the feed roller 3 and the platen 4 move together, the distance between the surface of the medium and the print head is always maintained constant regardless of the number or thickness of the medium, thereby preventing deterioration in print quality.

[Brief explanation of the drawing]

The drawings show an embodiment of the form printing device according to the present invention, with FIG. 1 being a plan view and FIG. 2 being a side view. In the figure, 1 is a movable frame, 3 is a feed roller, 4 is a platen, 5 is a stopper operating rod, 11 is an electromagnet, 12
is the pinch plate, 13 is the print head, 14.14' is the form,
16 is a stopper, and 21 is a stopper pressing plate.

Claims (1)

[Scope of utility model registration request] In a printing device in which the feed roller moves relative to the pinch member in a direction intersecting the surface of the form, the platen and stopper operating members are also connected to the same actuator so that they can move together with the feed roller, and there is no path in the form path. , is equipped with a form stopper for defining the ejection position of the form, and the form stopper is retracted from the form path by the stopper operating member when the feed roller moves toward the pinch member, and the form stopper is retracted from the form path by the stopper operation member, so that the feed roller is not pinched. A form printing device characterized in that it is configured to descend onto a form after printing is completed when separated from a member.