JP3330472B2 - Printer having soundproofing mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer having a soundproof mechanism, and more particularly to a printer having a noise source such as an impact head inside the printer, such as an impact printer, and a recording paper or a film sheet. The present invention relates to a printer equipped with a soundproofing mechanism having a paper entrance for a simple recording medium to enter and exit the apparatus.

[0002]

2. Description of the Related Art In a printing apparatus such as an impact printer having a noise source inside the apparatus, noise during printing is mainly generated from a printing impact head inside the apparatus. Such noise leaks to the outside of the apparatus through the paper entrance, and gives an unpleasant feeling to the operator or people around him.

Therefore, conventionally, in order to minimize the flow of noise from the inside of the printer to the outside,
Various measures have been taken such as making the paper entrance and exit narrower, placing a sound absorbing material near the paper entrance and exit, and covering the periphery of the impact head with a sound absorbing material.

[0004]

However, if the paper entrance is narrowed or a sound absorbing material is arranged near the paper entrance, there is a problem that the paper path is narrowed and the paper is easily jammed. To prevent this, the soundproof cover provided at the paper entrance can be opened and closed, and when paper passes through the entrance, the gap of the passage is narrowed to prevent noise from flowing out, and when paper jam occurs, it is prevented. Although some measures have been taken to open the cover and remove the jam, the structure of the apparatus becomes complicated and the operation becomes troublesome.

Therefore, in the present invention, in a printer having a noise source inside the apparatus and a paper entrance, a flap or a roller is used near the paper entrance to reduce the amount of noise leaking inside the apparatus to the outside. It is an object of the present invention to provide a printer with a soundproofing mechanism that minimizes paper sheets and does not hinder the passage of paper through an entrance.

[0006]

According to claim 1 Means for Solving the Problems], which has a noise generation source inside the apparatus, in a printer apparatus having a sheet entrance for the recording sheet enters and exits, single
Moved to the paper guide position when printing on the vote recording paper
Paper guide position when printing on continuous form recording paper
Is moved to the location, it consists of a cover member which also serves as a paper guide flap mounted to the apparatus body, a recording of the continuous form
When printing on paper, the cover member moves
When the cover member is moved to the
Abuts between the cover member and the flap,
Closed passages that can pass after the recording paper of the serial
And the recording paper of the continuous form passes through the closed passage.
A paper exit to be discharged from the printer device is configured, and
When printing on the cut sheet of recording paper, the cover member
Is moved to the paper guide position and the cover member is
Is separated from the flap and the cover member and the
Open passage into which the cut sheet recording paper is inserted
There is characterized in that so as to be configured, the printer apparatus is provided with a soundproof mechanism.

According to this, the size of the opening of the paper entrance can be varied according to the position of the cover member. For example, the transport direction of the paper is changed depending on the type of paper, for example, whether it is a continuous form or a single form. At the same time, the paper inlet and outlet can be used interchangeably. One embodiment of the present invention is characterized in that the flap is formed as a part of a device housing made of resin, and the flap portion is provided with flexibility. Further, the flap is attached to the apparatus main body via the pivot, and when the cover member is in the paper non-guiding position, the flap is configured to come into contact with the cover member by its own weight,
Further, a stopper may be provided to maintain a predetermined distance between the paper guide and the flap when the paper guide serving as the cover member is at the paper guide position.

In another embodiment, a spring is provided between the flap and the apparatus main body so that when the cover member is at the paper non-guiding position, the flap is brought into contact with the cover member by spring force. ing. Further, lock means for maintaining the flap in the open state may be provided. In this case, the jam can be easily removed by opening the flap when the jam occurs.

In another embodiment of the present invention, there is provided a conveying means including a roller near the paper entrance in the apparatus, and the conveying means comprises a pair of upper and lower rollers defining a paper path therebetween. The lower roller is surrounded by a guide groove depressed from the sheet feeding surface, and the upper roller is surrounded by a soundproof cover provided so as to cover an upper part thereof.

In this case, the upper roller is pressed against the lower roller by its own weight or a spring, and the width of the passage between the rollers can be automatically adjusted according to the thickness of the sheet. The apparatus further includes a conveying unit including a roller in the vicinity of the paper entrance in the apparatus, and the conveying unit includes a single roller that abuts on a fixed paper feeding surface, and the roller is provided so as to cover an upper portion thereof. It is configured to be surrounded by a soundproof cover.

The apparatus has a conveying means including a roller in the vicinity of the paper entrance in the apparatus, the conveying means comprising a single roller, and the roller is rotatably provided in a groove provided in a fixed paper path. You may do it.

[0012]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 and 2 are sectional views showing a part of an impact printer employing the soundproofing mechanism of the present invention. FIGS. 3A and 3B
1 schematically shows the soundproofing mechanism of the printer device shown in FIGS. 1 and 2 using a flap.

In these figures, 1 is an upper housing, 2 is a side housing, and 3 is a bottom. This printer has a substantially sealed structure except for a paper entrance 7 described later. Inside the device, there is an impact head 4 that is a noise source,
Printing is performed while a recording medium (paper S) such as a recording paper or a film sheet passes through the impact head 4, and at that time, noise is generated due to the impact.
Since the structure of the impact head 4 is well known,
Here, detailed description is omitted.

A pair of feed rollers 5 is provided in the paper path inside the printer, one (lower) roller 51 is a driving roller, the other (upper) roller 52 is a driven roller, and 53 is a driving roller. A guide groove on the side of the passage covering 51;
Reference numeral 4 denotes a soundproof guide that covers the driven roller 52. In this printer, when a continuous form is used as the paper S, the paper S is set to move in the direction of arrow A as shown in FIGS. 1 and 3A. In this case, as shown in FIG. 2 and FIG.
Is set to move in the direction of arrow B.

For this reason, when using the continuous form, the cover member 6 is locked and fixed so as to cover the side housing 2, and when using the cut sheet, the cover member 6 is caused to be in a substantially horizontal state and serves as a paper guide. Function. That is, on the device body side, the substantially vertical upper groove portion 22a is formed on the wall portions 21 on both sides of the side housing 2.
And a substantially L-shaped groove 22 composed of a lower groove portion 22b extending diagonally downward therefrom and provided symmetrically.
A fixing hook 23 is formed directly below the paper path. On the other hand, the cover member 6 is provided symmetrically with pins 61 that fit into the grooves 22 on both sides thereof, and has a hook 62 that is engaged with the fixed hook 23 at the upper end thereof.

Therefore, when trying to use a continuous form, the tip of the cover member 6 in a substantially horizontal state as shown in FIG. 2 is slightly pulled upward and diagonally toward the near side (the side opposite to the arrow B). Then, the pin 61 moves obliquely upward from the lower end of the lower groove portion 22b, and the hook 62 at the tip is disengaged from the corresponding fixed hook 23. After the hook 62 of the cover member 6 is completely disengaged from the fixed hook 23, the tip of the cover member 6 is pushed down and lowered until it hits the side housing 2, and the cover member 6 is brought into a substantially vertical state. At this time, the cover member 6 is lightly locked to the side housing 2 by well-known means (not shown).

Conversely, when trying to use a cut sheet, the lower end (tip) of the cover member 6 in a substantially vertical state as shown in FIG. 1 and FIG. Then, the pin 61 is pulled upward as it is. When the cover member 6 is slightly pushed down at a point when the cover member 6 has passed the substantially horizontal state, the pin 61 of the cover member 6 moves from the upper groove portion 22a of the groove 22 to the lower groove portion 22b, during which the hook 62 of the cover member 6 is moved. The pin 61 is fitted into the fixed hook 23 of the side housing 2 from below, and the pin 61 is
2b, the cover member 6 is locked in a substantially horizontal state as shown in FIGS. 2 and 3B. At this time, the cover member 6 serves as a paper guide when a single book is manually inserted in the direction of arrow B.

The paper entrance 7 is formed between the upper end 24 of the side housing 2 and the upper paper guide 71, and the interval between the paper entrances 7 is made as small as possible. The device is designed so that the noise inside the device does not leak to the outside as much as possible. Also, when using a continuous form, as shown in FIGS. 1 and 3 (a), the cover member 6 is in a substantially vertical state. It comes into contact with the flap 8 and pushes the flap 8 upward slightly.

Therefore, when the continuous form is used, the paper S is sent in the direction of arrow A in FIG. 1 by a tractor (not shown) using the feed holes on both sides of the continuous form, and is printed by the impact head 4. The paper is fed by the feed roller 5, passes through the paper entrance 7, and is discharged to the outside of the apparatus from a gap between the upper end of the cover member 6 and the flap 8. 2 and 3 on the other hand,
(B), the sheet S by utilizing the cover member 6 which also serves as a paper guide which is the horizontal position to be inserted in the manual feed in the arrow B direction. Then, the paper passes through the paper entrance 7 and is fed by the feed rollers 5 (51, 52),
Is carried out, and the paper is further fed in the direction of arrow B and discharged from the paper entrance (not shown) to the outside of the apparatus.

In the embodiment shown in FIGS. 1 and 2, the flap 8 is made of resin or the like and is integrally formed with the housing part, and when the cover member 6 is closed in a substantially vertical state, the flap 8 is closed. When the flap 8 is slightly pressed upward at the upper end, the flap 8 is deformed by its flexibility. The pressing force of the flap 8 is very small and does not hinder the movement of the paper S.

In the embodiment shown in FIGS. 3A and 3B, the flap 8 is connected to the housing by a pivot 81, and when the cover member 6 is closed, the opening of the paper outlet is closed by the weight of the flap 8. It is configured to close (FIG. 3A). At this time, the size of the opening changes as the flap 8 comes into close contact with the sheet S and follows the thickness of the sheet S. On the other hand, when the cover member (paper guide) 6 is opened (FIG. 3B), the stopper 82 of the flap 8 comes into contact with the housing portion, and the flap 8 stops at a predetermined position. Defines the paper inlet opening.

As described above, regardless of whether a continuous form or a cut sheet is used, the opening of the paper entrance is almost completely closed, so that the soundproofing effect is significantly enhanced. Also,
Since the openings at the paper entrance are completely closed, not only the sound of air propagation from these openings, but also the vibration of the paper is suppressed. It will be even higher.

FIGS. 4 to 6 show various embodiments of a soundproof mechanism using a flap. In the embodiment of FIG. 4, the flap 8 is attached to the apparatus housing via an elastic member 83 such as a polyester sheet or the like, and the pressing force on the paper S is adjusted. As a result, it is possible to prevent the pressing force on the sheet from being excessively large and the stiffness of the sheet being lost, thereby preventing a jam.

In the embodiment shown in FIG. 5, the flap 8 is connected to the housing by a pivot 81, and a pressing force is applied to the sheet S by a coil spring 84. The stopper 82 cooperates with the leaf spring 85. In the embodiment of FIG. 6, when the flap 8 is connected to the housing portion by the pivot 81 and the flap 8 is opened upward as shown by the arrow C, the claw portion 86 of the flap 8 fits into the hole 87 on the housing side. The flap 8 is configured to be fitted and locked in an open state. Therefore, when a jam occurs when thin paper or the like is used as a sheet, the jam can be easily removed by keeping the flap 8 open. In addition,
When the flap 8 is closed, the claw 86 is easily disengaged from the hole 87 by simply pressing down the flap 8, and the paper opening can be closed.

FIGS. 7 to 10 show embodiments of the soundproof mechanism of the feed roller portion. In the embodiment of FIG.
The upper roller 52 moves up and down as shown by the arrow D by its own weight in accordance with the thickness of the sheet, thereby supporting the upper and lower rollers 5.
This is a configuration in which the gap of the paper path between the first and second sheets 52 can be adjusted.

In the embodiment shown in FIG. 8, the upper roller 52 is movably supported up and down, and the upper roller 52 is pressed against the lower roller 51 by a spring 56, whereby
The gap between the upper and lower rollers 51 and 52 can be adjusted according to the thickness of the sheet. In the embodiment of FIGS. 7 and 8, the lower roller 51 is rotatably accommodated in a groove 53 of the paper passage portion, and the upper roller 52 is a soundproof cover 54.
To prevent sound propagation.

In the embodiment shown in FIG. 9, the rotating roller 5 is constituted by one piece, and this roller is covered with a soundproof cover 54. In the embodiment of FIG. 10, one roller 5 is inserted into the guide groove 53 of the paper passage so as to achieve a soundproofing effect. In this embodiment, the sheet is made up of a roller and an upper guide 5.
Sent through the gap with 7. As described above, the embodiments of the present invention have been described in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various forms, modifications, and corrections are made within the spirit and scope of the present invention. It should be noted that the like is possible.

[0028]

As described above, according to the present invention, the opening of the paper entrance is almost completely closed, regardless of whether a continuous form or a cut sheet is used, so that the soundproofing effect is significantly enhanced. . In addition, since the openings of the paper entrance are completely closed, not only the sound of air propagation from these openings but also the vibration of the paper is suppressed, so that the noise due to the vibration of the paper is prevented, and the noise is prevented. The effect is even higher.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view of an impact printer device employing a soundproofing mechanism of the present invention, showing a state in which a continuous book is used with a cover member closed.

FIG. 2 is a partial cross-sectional view of the impact printer device similar to that of FIG. 1 and shows a state when a cut sheet is used with a paper guide serving as a cover member opened.

FIGS. 3A and 3B are schematic diagrams of the soundproof mechanism using the flaps shown in FIGS. 1 and 2, wherein FIG. 3A shows a state in which a continuous form is used with a cover member closed, and FIG. The state when using the cut sheet is shown.

FIG. 4 shows an embodiment of a soundproof mechanism using a flap.

FIG. 5 shows another embodiment of a soundproofing mechanism using a flap.

FIG. 6 shows a further embodiment of a flap soundproofing mechanism.

FIG. 7 shows an embodiment of a soundproofing mechanism of a transport unit using two rollers.

FIG. 8 shows another embodiment of the soundproofing mechanism of the transport unit using two rollers.

FIG. 9 shows an embodiment of a soundproofing mechanism of a transport unit using one roller.

FIG. 10 shows another embodiment of the soundproofing mechanism of the transport unit using one roller.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 2 ... Case 3 ... Bottom part 4 ... Impact head 5, 51, 52 ... Roller 53 ... Guide groove 54 ... Soundproof cover 6 ... Cover member (paper guide) 61 ... Pin 7 ... Paper entrance / exit 8 ... Flap 81 ... Pipot 82 … Stopper S… Recording paper A… Continuous book feed direction B… Single book feed direction

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-137385 (JP, A) JP-A-63-251267 (JP, A) JP-A-2-185479 (JP, A) 57650 (JP, U) Hira 2-101758 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B41J 15/04 B41J 11/48 B41J 29/10 B41J 13/02

Claims (9)

(57) [Claims] An apparatus having a noise source inside the apparatus,
In a printer having a paper entrance through which recording paper enters and exits, the printer is moved to a paper guide position when printing on a cut recording paper.
Paper guide position when printing on continuous form recording paper
It is moved to the location, and a cover member which also serves as a paper guide consists of a flap attached to the apparatus body, at the time of printing on the recording sheet of the continuous form, the cover member
Is moved to the paper non-guiding position and the cover member
The cover member and the flap come into contact with the flap.
Between the printer and the recording paper of the continuous form is printed and passed
A possible closed passage is configured, and the recording paper of the continuous
The paper exit exiting the printer through a closed passage
When printing on the cut sheet of recording paper, the cover
When the member is moved to the paper guide position, the cover
A member separates from the flap and the cover member and the
An opening for inserting the single-sheet recording paper between the flap and the flap.
A printer device having a soundproofing mechanism, wherein a passage is formed . 2. The apparatus according to claim 1, wherein the flap is formed as a part of a device housing made of resin, and the flap portion is provided with flexibility. 3. The flap is attached to the apparatus main body via a pivot, and when the cover member is in a paper non-guide position, the flap is configured to abut on the cover member by its own weight,
2. The apparatus according to claim 1, further comprising a stopper for maintaining a predetermined distance between the paper guide and the flap when the cover member is at the paper guide position. 4. The apparatus according to claim 1, wherein a spring is provided between the flap and the apparatus main body, and when the cover member is at the paper non-guiding position, the flap is brought into contact with the cover member by a spring force. Item 3. The apparatus according to Item 3. 5. Apparatus according to claim 3, further comprising locking means for keeping the flap open. 6. A transporting means including a roller near a paper inlet / outlet inside the apparatus, the transporting means comprising a pair of upper and lower rollers defining a paper path therebetween, and a lower roller is provided with a paper feeding surface. 2. The apparatus according to claim 1, wherein the upper roller is surrounded by a soundproof cover provided so as to cover the upper part thereof. 7. The upper roller is pressed against the lower roller by its own weight or a spring, and the width of the passage between the upper and lower rollers is automatically adjusted according to the thickness of the sheet. An apparatus according to claim 2. 8. A transporting means including a roller near a paper entrance in the apparatus, the transporting means comprising a single roller abutting on a fixed paper feeding surface, and the roller covering an upper portion thereof. The device according to claim 1, wherein the device is surrounded by a soundproof cover provided. 9. A conveying means including a roller near a paper entrance in the apparatus, the conveying means comprising a single roller, and the roller is rotatable into a groove provided in a fixed paper path. The device of claim 1, wherein the device is provided.