JPH02202762A - Release state detector for facsimile - Google Patents

Abstract

PURPOSE:To detect opening of a panel cover for jam of an original, complete release of a head for jam of recording paper, or the like with a single sensor by providing projectingly a pin on the shake end side part of the head which is so shaken that it comes into contact with a platen roll from above and is separated. CONSTITUTION:Normally, a release lever 10 freely shakably attached to a main body 1 has a shake end 10b lifted to the vicinity of the contact face of a panel cover 3 of the main body 1. A sensor 11 fixed to the shake end 10b is brought into contact with the lower face of the closed cover 3 to output a detection signal, and a cam part 10a of the lever 10 is brought into contact with a pin 6 of a head 6, which is pressed to a platen roll 4 with a recording paper 2 in-between, from below. When the paper 2 jams, an operator opens the cover 3 and depresses the lever 10 to push up the head 5 to a half-release position through the cam part 10a and the pin 6, and shakes it to a complete release position with his hand. When the cover 3 is opened, complete release of the head 6 is detected because the detection signal of the sensor 11 is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a device for detecting a head or panel lid that is released or opened when a document or recording paper jams in a facsimile machine.

<Prior Art> As a facsimile, for example, the one shown in FIG. 5 is known. In this facsimile, a panel lid 23 is pivotally attached to the upper opening edge of the main body 21 so as to be freely openable and closable, and a document is transmitted between the closed panel M23 and the main body 21 as shown by arrow A. A platen roller 24 is rotatably installed horizontally in the main body 21, and a head 25 is swingably supported in the main body 21 so as to approach and separate from the platen roller 24 from above.
In between, a roll-shaped recording paper 22 stored in the main body 21
Reception is performed by passing the tip of the signal through as shown by arrow B.

If a jam occurs during document feeding in the six directions of the arrows, the panel lid 23 is opened as shown in the figure and the jammed document is taken out. Further, when the recording paper 22 is set, the head 25 is slightly lifted to the semi-relaxed position C, and then is in the normal position where it grips the recording paper and contacts the platen roller 24.
If a jam occurs while feeding the recording paper in the direction of arrow B, the jammed recording paper is released to the complete release position E and the jammed recording paper is removed.

Conventionally, release of the head in the facsimile machine is detected in the following manner. That is, a lower limit switch 26 that is turned on by contacting the lower surface of the head 25 in the normal position, and an upper limit switch 27 that is turned on by contacting the upper surface of the head 25 in the fully released position 1iE are provided.
Half-release of the head is detected when both the upper and lower limit switches 26 and 27 are off, and complete release of the head is detected when only the upper limit switch 27 is on. It should be noted that a limit switch for detecting the closing of the panel lid 23 is not provided.

<Problem to be Solved by the Invention> However, in the above-mentioned conventional facsimile machine, the half release (C) of the head when recording paper is set and the complete release (E) of the head when the recording paper jams are performed using two limit switches, upper and lower. 26.
27, which increases manufacturing man-hours and manufacturing costs, and has the disadvantage that it is not possible to save space within the main body. Furthermore, since it is not possible to detect whether the panel lid 23 is closed, there is a drawback that it is impossible to confirm whether the panel lid 23, which is opened when a document jams, is completely closed.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a facsimile machine that can reduce costs and save space within the facsimile machine by using a novel configuration that can detect panel lid opening and half-release and full-release of the head with a single sensor. An object of the present invention is to provide a release state detection method.

Means for Solving the Problems> In order to achieve the above object, the facsimile release state detection device of the present invention has a facsimile release state detecting device that detects a facsimile at the side of the swinging end opposite to the platen roller of the head swingably supported in the main body. a pin protruding from the head; a head cover pivoted within the Z body to cover the head and swing with the head; and a long head cover into which the pin fits loosely in the head opening/closing direction; It has an elastic member interposed therebetween and a cam part that abuts the pin from below, and is swingably attached to the main body, with the swinging end raised to the vicinity of the panel lid abutting surface of the main body, The cam part comes into contact with the pin of the head that is pressed against the platen roller by the elastic member, and with the swinging end pushed down to the vicinity of the inner bottom surface of the main body, the head is pushed to the platen roller via the cam part and the pin. The sensor is fixed to the swinging end of the release lever and outputs a detection signal when it comes into contact with the bottom surface of the closed panel cover. The present invention is characterized in that the single sensor detects whether the head is completely released during a jam or the head is partially released when recording paper is set.

The release lever, which is swingably attached to the main body, usually
The swinging end is in a state of being lifted up to the vicinity of the panel lid abutting surface of the main body. In this state, the sensor fixed to the swing end is in contact with the bottom surface of the closed panel lid and outputs a detection signal, and the cam part of the release lever is pressed against the platen roller while holding the recording paper. It touches the pin of the head from below. Now, if a jam occurs in the recording paper,
The operator opens the panel lid, then pushes down the release lever to push the head up to the semi-released position via the cam and pin, and then manually swings the head in the opening direction to the fully released position. When the panel lid is opened at this initial stage, the detection signal from the sensor stops, so complete release of the head is indirectly detected. In addition, when a roll of recording paper is set in the main body, the operator must press the release lever from outside the main body with the panel lid closed in order to sandwich the leading edge of the paper that is automatically fed out between the platen roller and the head. Press down to raise the head to the semi-relaxed position as described above. When this release lever is pushed down, the sensor moves away from the lower surface of the panel lid and the detection signal stops, so that half-release of the head is detected. Further, if a jam occurs in the document passing between the panel lid and the main body, the operator opens the panel lid. Then, the sensor moves away from the bottom of the panel lid and the detection signal stops.
Opening of the panel lid is detected.

<Example> Hereinafter, the present invention will be explained in detail with reference to illustrated embodiments.

FIG. 1 is a schematic diagram showing an example of a facsimile that employs the release state detection method of the present invention, where l is a main body in which a roll of recording paper 2 is stored, and 3 is an upper opening edge of this main body. 1a is a panel lid pivoted to open and close freely; 4 is a platen roller rotatably installed horizontally at the corner of the main body on the lower surface of the panel lid; 5 is a pair of sideways protruding from one end facing the platen roller 4; This head has a pin 6, the upper edge of the other end is pivotally supported on the main body 1, and is swingably provided so as to approach and separate from the platen roller 4 from above.

Further, 7 covers the head 5 from above and has its other end upper edge pivoted to the main body 1 so as to swing with the head, and has an elongated hole 8 into which the pin 6 is loosely fitted in the direction of the head swinging force. A head cover 9 having one end side is interposed between the head cover 7 and the upper surface of one end of the head 5, and a spring and an IO serving as elastic members bias the head 5 toward the platen roller 4.
11 is a release lever in which a cam portion 10a that contacts the pin 6 from below is fitted onto the platen roller 4 so as to be swingable, and 11 is a release lever with the lever 11a facing upward at the swinging end 10b of the release lever IO. This is a microswitch as a fixed sensor.

The release lever IO is normally biased by a torsion spring (not shown) interposed between the release lever IO and the platen roller 4.
The swinging end tob is raised to the vicinity of the panel lid 3 to take a position as shown in FIG. In this position, the lever 11a of the microswitch 11 comes into contact with the protrusion 3a on the lower surface of the closed panel lid 3 and is pressed down, thereby outputting an on signal. Further, in this position, the cam portion 10a of the release lever IO is pressed against the platen roller 4 by the spring 9 and comes into contact with the pin 6 of the head 5 in the normal position from below. Further, the head cover 7 housing the spring 9 is prevented from swinging counterclockwise by a stopper (not shown) provided on the pivot portion, and is held at a position corresponding to the semi-relaxed position C of the head 5.

On the other hand, the release lever 10 is moved to the third position against the torsion spring.
As shown in the figure, when you push down the body I to the vicinity of the inner bottom surface,
The cam portion 10a of the release lever IO pushes up the pin 6 to the upper end of the elongated hole 8 of the head cover 7, and the head 5 moves away from the platen roller 4 while compressing the spring 9 and rises to the semi-released position C. . Further, the head 5 and the head cover 7 that have been raised to the semi-released position C can be swung clockwise by the operator to the fully released position E shown in FIG. 4, and are locked at this position. . In addition,
When the recording paper 2 is set in the main body 1, it is automatically fed out, and the head 5 and platen are opened as shown in FIG. inserted between the rollers 4 and then the first
As shown in the figure, it is sandwiched between the head 5 and the platen roller 4 and arrow B
sent in the direction of In addition, the manuscript is the same as the conventional example.
It is fed in the direction of arrow A between panel 'r1.3 and body l in the figure.

With the facsimile having the above configuration, the release state is detected as follows.

In the normal state shown in FIG. 1, the release lever IO, which is fitted onto the platen roller 4 and biased by a torsion spring, assumes a position where its swinging end tab is raised to the vicinity of the panel lid 3. In this position, the microswitch 11 fixed to the swing end tab is in contact with the protrusion 3a on the lower surface of the closed panel lid 3 and outputs an on signal, and the cam part 10a of the release lever 10 is pressed against the spring. Recording paper 2 by 9
The pin 6 of the head 5, which is pressed against the platen roller 4 while holding it in place, comes into contact with the pin 6 from below.

Now, if a jam occurs in the document passing between the panel lid 3 and the main body 1, the operator must open the panel 1li as shown in FIG.
Open 3. Then, the protrusion 3a of the panel lid separates from the lever 11a of the microswitch 11, and the microswitch 11 outputs an off signal.

This allows the vn emission of the panel lid 3 to be detected.

Next, after setting the recording paper 2 in the main body l, the operator:
With the panel lid 3 closed, push down the release lever 10 from outside the main body as shown in FIG. Then, the cam portion 10a of the release lever pushes the pin 6 up to the upper end of the elongated hole 8 of the head cover 7, and the head 5 separates from the platen roller 4 and rises to the semi-released position C. Then, the leading edge 2a of the automatically fed recording paper 2 passes through the gap between the head 5 and the platen roller 4. This release lever! When pressed down, the microswitch 11 separates from the bottom surface of the panel M3, and an off signal is output. As a result, half release of the head 5 is detected. If the operator releases the release lever 10 after the leading edge 2a of the recording paper has passed, the normal state shown in FIG. 1 in which the recording paper 2 is held between the head 5 and the platen roller 4 is established.

Further, when a jam occurs in the recording paper 2, the operator opens the panel lid 3 as shown in FIG. The head 5 and head cover 7 are pushed open by hand to a completely released position E and locked. This first panel lid 3
When 1JPJ is released, the microswitch IL outputs an off signal in the same way as described in FIG. As a result, complete release of the head 5 is detected.

As described above, according to the present invention including the above-mentioned embodiments, the single microswitch 11 can release the panel lid 3 in the event of a document jam, completely release the head 5 in the event of a recording paper jam, and set the recording paper. Since all half-releases of the head 5 can be detected at the time, the number of man-hours and manufacturing costs for manufacturing the facsimile machine can be reduced by unifying the detection means, and the space inside the facsimile main body 1 can be saved.

In the above embodiment, a microswitch is used to detect the release state, but other sensors may be used instead.

Furthermore, it goes without saying that the present invention is not limited to the illustrated embodiment.

<Effects of the Invention> As is clear from the above explanation, the facsimile release state detection method of the present invention uses a pin protruding from the side of the swinging end of the head that swings toward and away from the platen roller from above. death,
This pin is loosely fitted into a long head cover that covers the head and swings together, and an elastic member is interposed between the head and the head cover, while a cam abuts the pin from below and lifts the head to a semi-relaxed position. A release lever with a section is swingably attached to the main body, and a sensor is installed at the swing end of the release lever to detect when it comes into contact with the bottom surface of the closed panel lid. It can detect the opening of the panel lid when a document is jammed, the complete release of the head when a recording paper is jammed, and the half release of the head when recording paper is set, reducing facsimile manufacturing man-hours and manufacturing costs, and saving space inside the facsimile machine. make a major contribution to

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an example of a facsimile that employs the release state detection method of the present invention, and FIGS.
FIG. 5 is a schematic diagram showing a conventional facsimile machine, showing the state when a recording paper jam occurs. ! ...Body, 2...Recording paper, 3...Panel lid, 4
...Platen roller, 5...Head, 6...Pin, 7...Head cover, 8...Elongated hole, 9...Spring, 10...Release lever, 10a...Cam part , 10b
... Swinging end, 11... Micro switch.

Claims (1)

[Claims] (1) The original is passed between the panel lid, which is pivotally attached to the main body so that it can be opened and closed, and the main body, and the document is sent. At the same time, a platen roller that is rotatably installed horizontally inside the main body below the panel lid and a platen roller that approaches and separates from above from above. In a facsimile machine that receives data through the tip of a roll of recording paper stored in the main body between heads that are swingably supported within the main body, the side of the swinging end of the head facing the platen roller is a head cover having a protruding pin and an elongated hole that covers the head and is pivotally supported within the main body so as to swing with the head, and into which the pin loosely fits in the head opening/closing direction;
An elastic member interposed between the head cover and the head,
It has a cam part that abuts the pin from below, is swingably attached to the main body, and is pressed against the platen roller by the elastic member with the swinging end raised to the vicinity of the panel lid abutting surface of the main body. A release lever that separates the head from the platen roller via the cam part and the pin when the cam part contacts the pin of the head from below and the swinging end is pushed down to near the inner bottom surface of the main body, and this release lever. Equipped with a sensor that is fixed to the swinging end of the lever and outputs a detection signal when it comes into contact with the bottom surface of the closed panel lid, which can open the panel lid in the event of a document jam, completely release the head in the event of a recording paper jam, and release the recording paper. A release state detection device for a facsimile machine, characterized in that a half release state of a facsimile machine is detected by a single sensor.