JPH05300292A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To develop the facsimile equipment offering ease of setting of recording paper and of cleaning of a recording electrode face regardless of a small sized and inexpensive equipment configuration with respect to the facsimile equipment in which the recording paper is set between the recording paper and a platen roller, the recording electrode is energized by a pressing force of a spring and brought into a close contact onto the recording paper for the printing. CONSTITUTION:The main body side is provided with a recording electrode section 15 and a platen roller 12. a cover 19 is provided with a spring 10 only and when the cover is closed, the spring is in contact with the recording electrode to press and energize the recording electrode section. Furthermore, while the cover is opened, the recording electrode section is turned and exposed to the outside of the equipment so as to offer ease of cleaning of the electrode face.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile machine, and more particularly to a recording paper setting mechanism for setting a recording paper between a recording electrode and a platen roller.

[0002]

2. Description of the Related Art FIG. 5 is a side sectional view for explaining a recording paper setting mechanism in a conventional facsimile apparatus. In the drawing, 1 is a recording paper, 2 is a platen roller, 3 is a guide plate, 4 is a recording electrode. Reference numeral 5 is an electrode holding portion, 6 is an electrode pressing leaf spring, and 7 is a housing cover. The housing holding portion 5 is attached with the electrode holding portion 5, and the hinge 8 serves as a fulcrum to open and close in the arrow direction of the drawing. The replacement of the recording paper 1 is performed by opening the cover 7. That is, by placing a new recording paper roll on the guide plate 3, placing the leading end of the recording paper 1 pulled out from the recording paper roll on the platen 2, and closing and locking the cover 7, the leading end of the recording paper 1 is moved. The recording medium 1 is sandwiched between the platen 2 and the electrode 4 biased by the spring 6, and the platen 2 rotates to push the recording paper 1 toward the front surface of the apparatus, so that the recording becomes possible.

FIG. 6 is a side sectional view for explaining a recording sheet setting mechanism in another conventional facsimile apparatus, and FIG.
6 is a view showing a cross section taken along the line AA of FIG. 6, and in this recording paper setting mechanism, the electrode holding portion 5 is fixedly attached to the mechanical frame 10 that supports the platen 2. Reference numeral 5a denotes an electrode mounting plate which holds the electrode 4 and whose movement is restricted by the holding portion 5.
Reference numeral 8 is a cam shaft for separating electrodes, and cams 8a and 8b are provided at both ends
And a shaft penetrates the mechanical frame 10, and an operating lever 8c is provided at one end thereof.

In the recording paper setting mechanism shown in FIGS. 6 and 7,
Since the holding portion 5 remains on the platen 2 side even when the cover 7 is opened, when setting the recording paper 1, the lever 8c is operated to open a gap between the electrode 4 and the platen 2, and the recording paper is set in this gap. 1 is inserted, the lever 8c is returned to the original position, the electrode 4 and the platen 2 are brought into close contact, and the cover 7 is closed to finish.

[0005]

In the conventional facsimile apparatus as described above, the recording paper setting mechanism has the following problems. That is, in the facsimile apparatus shown in FIG. 5, the recording paper 3 can be easily set, but the holding portion 5 is attached to the cover 7 side, and the electrode cable 4a is provided near the hinge 8 so as not to disturb the opening and closing of the cover 7. Since the arrangement of the cable 4a is a hindrance, and the weight of the cable 4a and the holding portion 5 applied to the cover 7 cannot be ignored, the lock mechanism for opening and closing the cover 7 should be strong. There is a need. Further, when the cover 7 is opened / closed, the electrode 4 is lifted together with the cover 7 to expose the electrode surface, which may be accidentally touched and damaged.

In the facsimile apparatus shown in FIGS. 6 and 7,
The above-mentioned problem does not occur because the housing cover 7 is opened and closed independently, but when setting the recording paper, the lever 4 is operated by operating the lever.
It is necessary to urge the spring 6 away from the platen 2 by urging the spring 6, and therefore it is necessary to design the holding portion 5 with due consideration of the displacement allowance of the spring 6 and the stress. Will turn into. Further, there is a problem that it is difficult to clean the electrode 4 because the distance between the electrode 4 and the platen 2 cannot be increased. The cleaning of the recording electrodes depends on the voltage applied to the electrodes, the application time, the recording paper speed, the recording paper characteristics, etc. However, it is necessary to clean the recording electrodes frequently in a low-speed facsimile machine. It has a great influence on its performance.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain a facsimile apparatus having a recording paper setting mechanism which is compact and simple and has an inexpensive structure and whose electrode surface can be easily cleaned. There is.

[0008]

In a facsimile apparatus according to the present invention, a recording electrode portion and a platen roller portion are attached to the main body side, only a spring is attached to the cover side, and the spring records when the cover is closed. It is characterized in that it is provided with means for contacting the electrode portion and further pressing it to urge the recording electrode portion and to release the recording electrode portion from the urging force of the spring with the cover opened.

[0009]

In the present invention, since the cover is simply attached with the spring, the structure is simple and inexpensive, and the pressing force of the spring biased by the recording electrode can be removed just by opening the cover, and the recording paper can be easily set. You will be able to

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing an embodiment of the present invention. In the drawing, 11 is a recording paper, 12 is a platen roller, which is driven by a drive source (not shown) via gears, belts, etc. in the direction of the arrow in the drawing. Rotate. 13 is a lower guide of the recording paper passage,
A gap is provided between the upper guide 14 and the paper. Reference numeral 15 is a recording electrode, which is held by an electrode holding plate 16 and is connected to a driver circuit and a power source by a cable (not shown). Reference numeral 17 denotes a conical compression coil spring for pressing the electrode 15 against the platen 12, which is fixed to a housing cover 19 with, for example, a machine screw 18.
9 is attached so as to be able to open and close around a fulcrum 22 with a spring 17. Further, a reference hole 21 is provided in the rear portion of the holding plate 16, and the reference hole 21 is fitted to a pin 20 set up in a mechanical frame (described later) to regulate the front-back position of the holding plate 16.

The facsimile apparatus of the present embodiment is constructed as described above, and by opening the cover 19, the spring 17 is separated from the electrode 15, the electrode 15 is released from the bias of the spring 17, and the platen 12 is free. It will be in a state. Further, the cover 19 opened upward is accompanied by only the spring 17, and the electrode 15
Since the wiring cable and the wiring cable thereof are left on the platen 12 side, the cover 19 can be made lightweight and have a simple structure without providing a wiring space or an electrode holding portion. It is possible to use a simple snap-fit type that utilizes the elasticity of.

Further, since the electrode surface of the electrode 15 remains on the platen 12 side, there is no need to worry that it may be touched carelessly and damaged. The electrode 15 remaining on the platen 12 side is separated from the platen 12 by a few millimeters by manual or interlocking operation of a separating member (described in FIG. 4), and the recording paper 11 is inserted therethrough. In this state, the spring 17 does not apply any urging force, so that it is not necessary to consider the dimensional and stress of each component. further,
The holding plate 16 can be rotated by the rear positioning pins 20 or positioning points (described in FIG. 3), etc., and the front surface of the holding plate 16 can be opened to clean the electrode surface.

When the cover 19 is closed, the electrode spacing member is manually or interlocked so that the cover 19 is closed.
When the spring 17 attached to the holding plate 16 contacts the holding plate 16 and the cover 19 is closed by pressing the spring 17 to the position where the electrode 15 is pressed against the platen 12, the cover 19 is locked by the lock mechanism.

In the present invention, the conical compression coil spring is used as the spring 17, so that buckling can be prevented when the electrode is pressed when the cover 19 is closed. That is, the large diameter part of the conical compression coil spring comes into contact with the electrode part (directly to the electrode or the electrode holding plate), and the force applied from an oblique direction can be temporarily absorbed by the spring intermediate part, and stable pressing without buckling. Is possible. In order to prevent buckling with a normal compression coil spring, it is necessary to use another member in combination, but in the present invention, buckling can be prevented by using a conical compression coil spring without the need for another member.

FIG. 2 shows an embodiment in which the shape of the electrode holding plate 16 is different. In this embodiment, the rear portion of the holding plate 16 is bent into a Z shape, and a surface 16a perpendicular to the electrode mounting surface and an electrode mounting surface are formed. And a surface 16b parallel to. Further, a support plate 23 is provided, and the support plate 23 has a structure bridging between mechanical frames (not shown). A positioning hole 23a is provided below the support plate 23, and the positioning hole 23a is provided. The Z-shaped bent portion of the holding plate 16 penetrates through the front edge 23b of the positioning hole 23a and the vertical surface 16 of the holding plate 16.
It has a structure in which a contacts.

Therefore, even if the force of pushing the platen 12 toward the front of the apparatus is applied to the recording paper 11 by the rotation of the platen 12, the vertical surface 16a of the holding plate 16 and the front edge 23b come into contact with each other as described above, so that the electrode 15 of the electrode 15 moves. The position of the printing unit can always be accurately positioned. In addition, the support plate 23 and the holding plate 16
A gap 24 of 0.5 to 1 mm is formed between the parallel surface 16b of
In order to obtain a uniform contact pressure between the platen 12 and the electrode 15 in the longitudinal direction, the gap 24 has a structure for absorbing mechanical twist and machining error.

FIG. 3 further shows an embodiment in which the shape of the electrode holding plate 16 is different. In this embodiment, a positioning hole 25 is provided at the rear of the holding plate 16, and the positioning hole 25 is a mechanical frame (not shown). ) Has a structure in which the surface 26a of the support plate 26 that is parallel to the holding plate 16 is fitted with the positioning pin 27 that has been set up. With such a structure, the platen 12 and the electrode 15 are formed. It is possible to perform accurate positioning with.

Further, as shown in FIG. 3, when the distance between the contact point P ₁ between the printed portion of the electrode 15 and the platen 12 and the positioning point P _{2 at the} rear of the holding plate 16 is A, then from the above P ₁ By providing the structure in which the center position of the spring 17 is provided by being shifted rearward by a distance of A / 3 to A / 5, a structure in which a sufficient contact pressure between the electrode 15 and the platen 12 is obtained. Further, with such a structure, the holding plate 16 is lifted up by an external force such as a vibration given from the outside of the device due to the play of the positioning hole 25 provided at the rear of the holding plate 16 or the play of the above-described twist absorbing gap. By pressing, it is possible to obtain a stable printed state.

FIG. 4 is a view corresponding to FIG. 7 for explaining the conventional device. As shown in the figure, in this embodiment, the recording electrode 15 is used.
In order to separate them from each other, the electrode holding plate 16 is provided with a flat surface portion 16c extending outward from the left and right ends of the electrode 15 by a few millimeters. And then operate the electrode 15
A separating member 31 that pushes up is supported by a mechanical frame 32, and by operating the separating member 31, the electrode 15 and the platen 12 are separated from each other so that the recording paper 11 can be inserted when the recording paper is set. With this structure, the upward movement of the holding plate 16 is not limited by the spacing member 31.

[0020]

As described above, the present invention has an effect that it is possible to provide a compact and inexpensive facsimile device in which not only the setting of recording paper but also the cleaning of the recording electrode surface is easy.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an embodiment of the present invention.

FIG. 2 is a side sectional view for explaining another embodiment of the present invention.

FIG. 3 is a side sectional view for explaining another embodiment of the present invention.

FIG. 4 is a partial configuration diagram for explaining another embodiment of the present invention.

FIG. 5 is a side sectional view for explaining a conventional device.

FIG. 6 is a side sectional view for explaining another conventional device.

FIG. 7 is a partial configuration diagram of the device shown in FIG.

[Explanation of symbols]

 11 recording paper 12 platen roller 15 recording electrode 16 electrode holding plate 17 conical compression coil spring 19 housing cover

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location B41J 29/00 H04N 1/032 B 9070-5C

Claims (3)

[Claims] 1. A facsimile in which a recording sheet is set between a recording electrode and a platen roller, and the recording electrode section is urged by pressing a spring to bring the recording sheet into close contact between the recording electrode and the platen roller for printing. In the apparatus, when the facsimile apparatus is divided into a main body and a cover which is opened and closed with a rear portion of the main body as a spindle for replacing a recording paper roll, a recording electrode unit and a platen roller unit are attached to the main body side, Only the spring is attached to the cover side, and when the cover is closed, the spring comes into contact with the recording electrode portion and further presses it to urge the recording electrode portion, and when the cover is opened, the recording is performed. A means for releasing the electrode portion from the bias of the spring, a means for using a conical compression coil spring for the spring so that the so-called buckling of the spring does not occur when the cover is opened and closed, the recording electrode portion is A means that is rotatably attached to the main body side by a support shaft parallel to the support shaft, and that exposes the electrode surface to the outside of the device by rotating the cover in an open state; A facsimile machine characterized by. 2. A recording paper, a recording electrode, and a platen roller 3
P ₁ contacts who a center of the support shaft of the recording electrode portions and P _2, the contact distance between P ₁ and P ₂ when the A, to the recording electrode portion is closed the cover The position of the center part of the spring is 1/3 from the P ₁ to the P ₂ side.
The spring is attached to the cover side so that the spring is located at a position apart from the range of A to 1 / 5A.
Facsimile device described in the paragraph. 3. The recording electrode portion rotatably attached to the main body side is indirectly connected via a vibration absorbing mechanism that combines a plurality of separate members with a gap and absorbs vibration in the gap. When the recording paper is moved, the recording electrode slides in the same direction and stands still at a specified position as the recording paper moves, so that the three contact points of the recording paper, the recording electrode and the platen roller are positioned. A facsimile machine according to claim 1 or claim 2 characterized in that.