JPH029668A - Wire dot printer - Google Patents

Abstract

PURPOSE:To reduce noise by suppressing the vibration of paper by bringing the paper delivered from a paper delivery port into contact with a projection by providing said projection to the paper delivery port of an upper case so as to bring the discharged paper into contact with the projection. CONSTITUTION:At a delivery port 26, a projection 38 is formed to the end part 21a of the upper case 21 opposed to a printer cover 27. The projection 38 is formed so as to vertically erect the end part 21a and a rib 39 for controlling a contact degree is formed to the side surface of the delivery port 26. When paper 41 is delivered from the delivery port 26, said paper 41 is brought into contact with the projection 38 to suppress the vibration of the paper 41.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a wire dot printer f which takes measures against noise during printing.

2. Description of the Related Art The overall structure of a conventional wire dot printer is as shown in FIG.

Reference numeral 1 in the figure indicates the upper case, and reference numeral 2 indicates the lower case. A paper insertion/ejection section 3 is formed on the upper side of the upper case 1, and a paper supporter 4 is attached to this paper insertion/ejection section 3.

As shown in FIG. 5, the outside of the paper insertion/ejection section 3 includes an insertion slot 5 for inserting paper into the case 1, the paper supporter 4 continuously attached to the insertion slot 5, and the case 1.
A discharge port 6 for discharging paper from inside and a printer cover 7 covering one side of the discharge port 6 are provided.

Also, inside the paper insertion/ejection section 3, there is a roller-shaped platen 9, two pinch rollers 10 and 11 that are in pressure contact with the platen 9, and a wire dot that faces the platen 9 with an ink ribbon 12 in between. 13 are provided.

Then, when printing, the paper 14 is moved to the paper supporter 4.
is guided through the insertion port 5 and inserted into the platen 9.
is sent to the wire dot head 13 side by two pinch rollers 10 and 11, and is sent to the platen 9 and ink ribbon 12.
It is printed by the rad 13 on the wire dot through the
It is discharged to the outside from the discharge port 6.

Problem to be Solved by the Invention However, in the wire dot printer having the above structure, extremely high noise is generated due to the noise generated when printing is performed by the wire dot pad 13 and the accompanying vibration noise generated from the paper 14. There are some problems.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a low-noise wire dot printer.

Means for Solving the Problems In order to achieve the above object, the present invention is characterized in that the paper discharge port of the upper case is provided with a protrusion with which the paper to be discharged comes into contact.

Function: In the wire dot printer having the above structure, the paper discharged from the paper discharge port comes into contact with the protrusion, its vibration is suppressed, and noise is reduced.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

The overall shape of the wire dot printer of the present invention is almost the same as that of the conventional example, and as shown in FIG. A paper insertion/ejection section 23 is formed on the upper side. A paper supporter 24 is attached to this paper insertion/ejection section 23.

As shown in FIG. 1, on the outside of the paper insertion/ejection section 23, there is an insertion opening 25 into which the paper inside the case 21 is inserted, the paper supporter 24 that is continuously attached to the insertion opening 25, and the inside of the case 21. A discharge port 26 from which paper is discharged, and a printer cover 27 that covers one side of the discharge port 26 are provided.

Further, inside the paper insertion/ejection section 23, the upper case 21 is extended inward from the insertion opening 25, and a paper supporter 2 is provided.
an internal supporter 28 formed so that 4 is on the same surface, a paper feed roller 29, and this paper feed roller 29.
two pinch rollers 30 and 31 that are pressed against each other, a roller cover 32 that covers the upper side of the paper feed roller 29, and a platen 3 that is attached to one side of this roller cover 32.
3, a platen sheet 34 attached to the front surface of this platen 33, and an ink ribbon 3 attached to this platen sheet 34.
A wire dot head 36 facing through the dot head 5 is provided. .

A protrusion 38 is formed in the discharge port 26 at the end 21- of the upper case 21 facing the printer cover 27. This protrusion 38, as shown in FIG.
It is formed by standing up vertically, and its discharge hole 2
Lips 39 for adjusting the degree of contact are formed on the six sides. The discharge port 26tfi in FIG. 1 is adjusted by the printer cover 27 to be narrow enough to prevent paper jams.

Then, when printing, the paper 41 is moved to the paper supporter 2.
4 and the internal supporter 28 and are inserted into the interior from the insertion opening 25, and the roller 29 and two pinch rollers 30.
31 to the wire dot head 36 side, passes between the platen sheet 34 and the ink ribbon 35, is printed by the wire dot head 36, and is discharged to the outside from the discharge port 26.

Then, when the paper 41 is discharged from the discharge port 26, it comes into contact with the protrusion 38, and the vibration of the paper 41 is suppressed. Note that the lip 39 of the protrusion 38 is set in a shape that can effectively suppress vibrations of the paper 41.

Effects of the Invention As described above, the wire dot printer of the present invention has the advantage that the paper discharged from the paper discharge port comes into contact with the protrusion, thereby suppressing its vibration and reducing noise.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a paper insertion/ejection section of an embodiment of the wire dot printer of the present invention, FIG. 2 is a perspective view showing the ejection port of the upper case of the wire dot printer of FIG. 1, and FIG. The figure is a perspective view showing the overall shape of the wire dot printer shown in FIG. 1, FIG. 4 is a perspective view showing the overall shape of the conventional wire dot printer, and FIG. 5 is a sectional view showing the paper insertion/ejection section shown in FIG. 4. It is. 21... Upper case, 22... Lower case, 23... Paper insertion/ejection section, 26...
Ejection port, 38...Protrusion, 39...Reply of protrusion 38. 2/- Upper case diagram

Claims (1)

[Claims] A wire dot printer characterized in that a printing paper discharge port of a casing forming an outer shell is provided with a protrusion with which the discharged paper comes into contact.