JPH0824331B2 - Recording paper size detector for facsimile machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording paper size detecting device for a facsimile machine which is used in a facsimile machine which uses recording in roll form and can use recording papers of different sizes. It is a thing.

[Conventional technology]

Roll-shaped recording paper is generally used in conventional facsimile machines, and as a facsimile machine using this recording paper, for example, two kinds of recording paper of A4 size and B4 size can be used. It has been known. In this type of facsimile apparatus, it is necessary to input the size of the currently loaded recording paper in the control when recording on the recording paper.

As a conventional configuration for inputting the recording paper size,
As shown in FIG. 5, the A4 recording paper 31 and the B4 recording paper 32 are provided with photoreflectors 33 and 34 respectively corresponding thereto, and detection signals of these photoreflectors 33 and 34 are inputted to the main control section 35. There is something. Photo reflector 33 ・
34 is composed of a light emitting element and a light receiving element.When the A4 or B4 recording paper 31, 32 is mounted, the light emitted by the light emitting element is reflected by the A4 or B4 recording paper 31, 32 and the light receiving element It is turned on when it is incident on and detects the state in which the A4 or B4 recording paper 31, 32 is mounted. That is, A4
When the recording paper 31 is attached, only the photo reflector 33 is turned on, and when the B4 recording paper 32 is attached, both photo reflectors 33 and 34 are turned on, and both the A4 and B4 recording papers 31 and 32 are turned on. If both are not installed, both photo reflectors 33
・ 34 is turned off.

As another configuration for inputting the recording paper size, as shown in FIG.
There are some that can be input manually. Further, in this apparatus, the state in which either A4 or B4 recording paper 31, 32 is mounted is input by the photo reflector 36.

[Problems to be Solved by the Invention]

However, in the former configuration, although the mounting state of the A4 or B4 recording papers 31 and 32 can be automatically detected, it is necessary to provide two relatively expensive photoreflectors 33 and 34, which leads to an increase in cost. Also, photo reflectors 33 and 34
When using, the output voltage varies due to individual variations of the photo-reflectors 33 and 34, and there is a problem in that adjustment work is required.

Further, in the latter configuration, although the slide switch 37 for inputting the recording paper size is relatively low in cost,
Every time the A4 or B4 recording papers 31 and 32 are replaced, the slide switch 37 must be manually operated, and this operation is troublesome and the recording papers actually mounted by the operator's erroneous operation. If the size of the recording paper and the size of the recording paper detected by the main control unit 35 are different, there is a problem that the reception operation may be hindered.

[Means for solving the problem]

In order to solve the above-mentioned problems, a recording paper size detecting device of a facsimile apparatus of the present invention has a recording paper mounting portion capable of mounting two types of roll-shaped recording papers having different sizes in the roll axis direction. , The size in the roll axis direction in this recording paper mounting portion corresponds to the large size recording paper,
A partition plate for positioning the small-sized recording paper is detachably provided in the recording paper mounting portion, and a partition plate for mounting the partition plate is provided on the inner surface of the recording paper mounting portion at the mounting portion of the partition plate. A mounting groove is formed, and the partition plate mounting groove has an operating portion projecting inside the partition plate mounting groove, and the operating portion is operated in accordance with attachment / detachment of the partition plate to / from the partition plate mounting groove. It is characterized by a mechanical switch that is turned on / off by.

[Operation] According to the above configuration, when a small size recording paper, for example, A4 size, is mounted in the recording paper mounting portion, the partition plate is mounted in the partition plate mounting groove of the recording paper mounting portion. When the partition plate is installed, the partition plate operates the operating part that protrudes in the partition plate mounting groove to operate the mechanical switch.
When it is turned on, it can be detected that A4 size recording paper is loaded. Further, when a large size B4 size recording paper is mounted in the recording paper mounting unit, since the B4 size recording paper does not need to be positioned by the partition plate,
The partition plate is removed from the recording paper mounting portion. This allows
It is possible to detect when the mechanical switch is turned off and B4 size recording paper is loaded.

Since the ON / OFF operation of the above mechanical switch is linked with the operation of attaching / detaching the partition plate corresponding to the size of the recording paper used, the size of the recording paper can be adjusted without being affected by the operator's erroneous operation. Can be accurately detected. Further, the mechanical switch is lower in cost than the above-mentioned photoreflector which is conventionally used, so that the cost is reduced.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

As shown in FIGS. 1 and 3, in the facsimile apparatus, a recording paper mounting portion 2 having a concave shape is formed in the apparatus main body 1. As shown in FIG. 1, the recording paper mounting portion 2 includes an A4 size recording paper, that is, an A4 recording paper 3 wound in a roll shape on a paper tube 3a, and a paper core as shown in FIG.
B4 size recording paper, that is, B4 recording paper 9 wound in a roll shape on 9a can be mounted. Recording paper mounting unit 2
As shown in FIG. 3, the side wall portions 1a and 1a are provided at both ends of the B4 recording paper 9 at a distance corresponding to the length of the B4 recording paper 9 so that both ends of the B4 recording paper 9 can be regulated and positioned. Are formed. The recording paper mounting portion 2 is detachably provided with two partition plates 4 for restricting both ends of the A4 recording paper 3. The lower part of these partition plates 4 and 4 is the recording paper mounting portion 2.
It has a semi-circular shape that corresponds to the shape of the above, and is adapted to be mounted in partition plate mounting grooves 5, 5 formed on the peripheral wall of the recording paper mounting portion 2 at a distance corresponding to the length of the A4 recording paper 3. There is. Each partition plate 4 is mounted by pushing down in the Y direction along the partition plate mounting groove 5, and pulled out by pulling up in the L direction.

As shown in FIGS. 2 (a), (b) and FIGS. 4 (a), (b), the partition plate mounting groove is provided at a position corresponding to the lowermost position of each partition plate mounting groove 5 in the apparatus main body 1. A switch mounting portion 6 having a communication portion 6a with the switch 5 is formed. The switch mounting portion 6 is provided with a push switch 7 as a mechanical switch having an actuator 7a capable of moving forward and backward as an operating portion. The push switch 7 is fixed to the switch mounting portion 6 by a screw 8, and the actuator 7a projects into the partition plate mounting groove 5 through the communication portion 6a.

Further, the present facsimile machine is provided with a recording paper detecting means (not shown) such as a photo reflector for detecting whether the A4 recording paper 3 or the B4 recording paper 9 is attached. Reference numeral 7 is connected to a main controller (not shown).

In the above configuration, the A4 recording paper 3
When the is mounted, the partition plate 4 is mounted in the partition plate mounting groove 5 in the recording paper mounting portion 2 of the apparatus main body 1. At this time, the partition plate 4 is arranged in the Y direction (downward) from above the recording paper mounting portion 2 along the partition plate mounting groove 5. At this time, the partition plate 4 descends due to its own weight. When the lower end of the partition plate 4 reaches the bottom of the partition plate mounting groove 5, the actuator 7a of the push switch 7 is stabilized by the weight of the partition plate 4 and the push switch 7 is stabilized.
The stroke S that can be turned on is pushed in. As a result, the push switch 7 is turned on. After the partition plates 4 and 4 are attached in this way, the A4 recording paper 3 is placed in the recording paper mounting portion 2 between the partition plates 4 and 4. When the A4 recording paper 3 is placed, the recording paper detecting means is turned on. The main control section can detect that the A4 recording paper 3 is mounted by inputting the ON state of the recording paper detection means and the ON state of the push switch 7.

On the other hand, when the A4 recording paper 3 of the recording paper mounting portion 2 is replaced with the B4 recording paper 9, the A4 recording paper 3 is removed from the recording paper mounting portion 2 and the partition plates 4 and 4 are moved in the L direction ( It is pulled up and removed. As a result, the recording paper detection means
When turned off, the push switch 7 also turns off.

Then, as shown in FIGS. 3 and 4 (a) and (b), when the B4 recording paper 9 is placed in the recording paper mounting portion 2, the push switch 7 remains OFF and only the recording paper detecting means is provided. Is ON
To do. As a result, the main control unit can detect that the B4 recording paper 9 is placed on the recording paper mounting unit 2.

〔The invention's effect〕

As described above, the recording paper size detection device of the facsimile apparatus of the present invention has the recording paper mounting portion capable of mounting two kinds of roll-shaped recording papers having different sizes in the roll axis direction. The size of the mounting portion in the roll axis direction corresponds to the large-sized recording paper, and the recording paper mounting portion is detachably provided with a partition plate for positioning the small-sized recording paper. A partition plate mounting groove for mounting the partition plate is formed on the inner surface of the recording paper mounting portion at the part, and the partition plate mounting groove has an operating portion protruding in the partition plate mounting groove. A mechanical switch is provided which is turned on / off by operating the operation section according to attachment / detachment of the partition plate to / from the plate mounting groove.

Therefore, with the configuration using the inexpensive mechanical switch, the size of the recording paper arranged in the recording paper mounting portion can be automatically and accurately detected in association with the attaching / detaching operation of the partition plate. Also, mechanical switch ON / OFF
Since the size of the recording paper is detected by the above, there is an effect that the adjustment work of the output voltage, which is performed for a photodetector element such as a photoreflector, becomes unnecessary.

[Brief description of drawings]

1 to 4 show an embodiment of the present invention. FIG. 1 is a vertical sectional view showing a state in which A4 recording paper is arranged. FIG. 2A is an enlarged vertical sectional view of the vicinity of the push switch shown in FIG. FIG. 2B is a sectional view taken along the line AA in FIG. FIG. 3 is a vertical sectional view showing a state in which B4 recording paper is arranged. FIG. 4 (a) is an enlarged vertical sectional view in the vicinity of the push switch shown in FIG. FIG. 4 (b) is a sectional view taken along the line BB in FIG. 4 (a). FIG. 5 is a perspective view showing a conventional example. FIG. 6 is a perspective view showing another conventional example. 1 is the main body of the apparatus, 2 is a recording paper mounting part, 3 is A4 recording paper, 4 is a partition plate, 5 is a partition plate mounting groove, 6 is a switch mounting part, 7 is a push switch (mechanical switch), 7a
Is an actuator (operation unit).

Claims (1)

[Claims] 1. A recording paper mounting portion capable of mounting two kinds of roll-shaped recording paper having different sizes in a roll axis direction,
The size in the roll axis direction in the recording paper mounting portion corresponds to the large size recording paper, and a partition plate for positioning the small size recording paper is detachably provided in the recording paper mounting portion. A partition plate mounting groove for mounting the partition plate is formed on the inner surface of the recording paper mounting portion at the plate mounting portion, and the partition plate mounting groove has an operating portion protruding in the partition plate mounting groove. A recording paper size detecting device for a facsimile machine, further comprising a mechanical switch which is turned on / off by operating the operation section according to attachment / detachment of the partition plate to / from the partition plate mounting groove.