JPS5852746Y2 - Recording paper ejection control device for facsimile receivers - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a recording paper ejection control device for a facsimile receiver.

Recent plane scanning type facsimile receivers often use roll-shaped recording paper in order to save labor and reduce operating costs.

That is, the advantage of using a roll of recording paper is that it is inexpensive, easy to load, and there is no restriction on the length of the transmitted document.

For this reason, rolls of recording paper are often used, and in this case, the received and reproduced recorded images are a series of consecutive images in the order in which they were received.

Therefore, in order to obtain each recorded image corresponding to each document on the receiving side, it is necessary to cut the thus recorded roll-shaped recording paper.

In this case, the cutting position on the facsimile receiver is usually set near the received image output port away from the recording position, so when cutting the recording paper, move the recording paper from the recording position to the cutting position. The end of the recorded image must be brought to the above-mentioned cutting position.

However, in conventional small facsimile receivers, the transfer and cutting of the recording paper after such reception operation is performed manually.

At this time, the amount of recording paper to be transferred is determined by the operator's eye, so it is not always possible to transport the necessary and sufficient amount of recording paper, resulting in wasted recording paper or unrecorded images. There was a drawback that it was cut off halfway to the end.

In addition, if the operator forgets to perform such operations after receiving, there is the inconvenience that the recorded image cannot be cut.On the other hand, in order to eliminate this drawback, Some facsimile receivers have already implemented automatic transfer and cutting of recording paper.

However, with this method, the above-mentioned recording paper transport operation is always performed every time one document is received.
When multiple sheets of originals are received successively, recording paper corresponding to the distance from the end of the previous recording image to the beginning of the next recording image, that is, the distance between the recording position and the cutting position described above, is wasted. Therefore, the present invention proposes a recording paper ejection control device for a facsimile receiver that eliminates these drawbacks. Explain details.

FIG. 1 shows a schematic configuration of the control device of the present invention.

In the figure, 1 is a step pulse generation circuit for transporting the recording paper, 2 is a pulse motor drive circuit for driving the pulse motor 3 for transporting the recording paper by the step pulse, and 4 is the number of step pulses. 5 is a control circuit that controls the entire operation of the receiver including the operation of the step pulse generating circuit 1; 6 is a hook-up detection circuit that detects a telephone hook-up; 7 is a control circuit in which the receiver When the reception operation is completed, a reception completion storage circuit detects and stores it, and 8 is a paper feed storage circuit that stores whether or not there is a recording paper transport operation.

Next, the operation of the city control system of the present invention will be explained, but first, for the sake of understanding, the general operation procedure when performing facsimile communication will be explained first.

Facsimile communication generally consists of the following five operating stages A to E (
These are called phases).

That is, Phase A is the operation to connect the line between the sender and the receiver, and when using a telephone line, the calling party turns the dial to call the other party, and the line is connected to the facsimile transceiver. This is the stage up to.

Phase B is a stage in which necessary controls such as phase matching between the transmitter and receiver are performed after the facsimile line is connected in this way, and phase C is a stage in which image signals are transmitted.

Phase D is a stage for performing operations such as stopping the operation of the other party's device after completion of transmission or completion of reception of the image signal thus transmitted.

Phase E is a stage for switching the telephone line between the sender and the receiver from the facsimile side to the telephone side, or disconnecting the telephone line itself after the facsimile communication is completed.

Now, in the circuit shown in FIG. 1, when the power of the facsimile receiver is turned on, the control circuit 5 checks whether the reception switch (not shown) is turned on according to the flowchart shown in FIG.
key scan).

When it is confirmed by this key scan that the reception switch is not turned on, the control circuit 5 next checks whether a recording paper feed switch (not shown) is turned on.

After confirming that this chart paper feed switch is also not turned on, the control circuit 5 checks the state of the reception completion memory circuit T. When it is confirmed that the reception operation has never been completed, the control circuit 5 then checks the status of the reception completion memory circuit T. Step 5 returns to the beginning of the flowchart in FIG. 2 and repeats the above operations.

Next, when the above-mentioned receiving switch is turned on during such repeated operations, the control circuit 5 detects this and connects the line between the facsimile transmitter and receiver (phase A).
After performing the above-mentioned phase B operation, phase C, that is, the image signal reception state is entered.

When the reception of the image signal is completed, the control circuit 5 causes the reception completion memory circuit 7Vc to memorize that the reception has been completed, and at the same time performs the operation of the above-mentioned phase D, and then enters the phase E, which connects the telephone line between the transmitter and the receiver. is switched from the fax machine to the telephone machine.

Next, when phase EK occurs in this way, the control circuit 5
In the same manner as described above, the receiver checks again whether the reception switch and the recording paper feed switch are turned on, and when it is confirmed that the fallen paper has not been turned on again, the state of the reception completion storage circuit 7 is checked again.

In this case, since the completion of reception is stored, the control circuit 5 causes the hook-up detection circuit 6 to check the disconnection state of the telephone line between the transmitter and the receiver.

If hook-down, that is, disconnection of the line is detected, the control circuit 5 then controls the paper feed storage circuit 8.
Check the status of the paper to determine whether automatic paper feeding is necessary.

In this case, since the chart paper has not been fed even once after completion of reception, the completion of paper feeding is not stored.
Therefore, the control circuit 5 determines that automatic paper feeding is necessary.

Next, when it is determined that automatic paper feeding is necessary in this manner, the control circuit 5 causes the step pulse generation circuit 1 to generate a step pulse.

This pulse is then supplied to the pulse motor drive circuit 2 to drive the pulse motor 3, thereby starting to feed the recording paper.

At the same time, the step pulse is also introduced into the counting circuit 4, and when this pulse is counted by a number equal to the conveyance amount of the recording paper corresponding to the distance between the reading position and the cutting position described above, it is output to the counting circuit 4. occurs.

Then, upon obtaining this output, the control circuit 5 causes the step pulse generation circuit 1 to stop generating step pulses.

For this reason, the end of the recorded image that had stopped at the recording position when reception was completed was moved to the cutting position, and therefore,
In this state, the operator only has to cut off the end of the recorded image using the cutter mechanism described above.

When the operation of the step pulse generation circuit 1 is stopped, the facsimile receiver has completed the series of operations from receiving and recording the image signal to feeding the recording paper after receiving it. At this time, if the hookup detection circuit 6 confirms that the telephone line between the sender and the receiver is connected (however, the line has been switched from the facsimile side to the telephone side), the control circuit In step 5, the process immediately returns to the beginning of the flowchart of FIG. 2 without making the above-described determination as to whether automatic paper feeding is necessary or not.

Therefore, in this case, the recording paper will not be fed after reception is completed until the line is disconnected.

Note that the above operation is for the case where recording paper is automatically fed after reception is completed.

Next, a case will be described in which the recording paper is fed before the start of reception or after the completion of reception.

Note that the reason why it is necessary to feed the recording paper before starting reception is, for example, in order to cause the leading edge of the recording paper to reach the recording position when the recording paper is loaded.

In this case, phase E before reception starts or after reception is completed.
When the above-mentioned chart paper feed switch is turned on in the state of Then, a step pulse is generated, and this state is maintained until an output appears in the counting circuit 4.

Therefore, in this case as well, by turning on the recording paper feed switch once, the recording paper is transported by a length corresponding to the distance between the recording position and the cutting position described above.

Therefore, in order to cut the recording paper after reception is completed, it is only necessary to turn on the recording paper feed switch once, and when loading the recording paper mentioned above, as shown in FIG. After a certain period of time (time interval) has elapsed since the first turn on, the switch can be turned on again and the same operation can be repeated.

Note that the above time interval is provided to prevent malfunctions such as when the recording paper feed switch is continuously turned on.

Next, when the recording paper feeding is completed in this way, the control circuit 5 checks the completion of reception, hookup, and automatic paper feeding as described above, thereby checking the K at the beginning of the flowchart in FIG. Either return or the end of the flowchart (all operations are completed).

In other words, if the completion of reception is not detected (if the chart paper is fed before reception starts), or if a hookup is detected (there is a possibility that a second document needs to be received). ), the state returns to the state before the start of reception.

On the other hand, if hook-down is detected (if there is no need to continue receiving the second document), it is determined whether the automatic paper feed described above is necessary or not. Since it is stored in the paper feed storage circuit 8Ilc that the above-described recording paper feed by the switch has already been carried out, the control circuit 5 determines that automatic paper feed is not necessary and enters a state in which all operations are completed.

In the circuit shown in Fig. 1, the hook-up detection circuit 6 determines whether automatic paper feeding is necessary or unnecessary when the telephone line between the sender and the receiver is disconnected. It is also possible to perform this at the time of switching from the telephone side to the telephone side.

Furthermore, in the above circuit, the turning on of the chart paper feed switch is not detected until after it is confirmed that the reception switch is not turned on as described above, so even if the chart paper feed switch is turned on during the receiving operation, Even if it is put into
Of course, this feeding of the recording paper is not performed independently of the recording operation.

As described in detail above, the recording paper ejection control circuit of the present invention detects an intermittent state of the facsimile line after detecting the reception completion state in a facsimile receiver that uses roll-shaped recording paper, and detects that the line is disconnected. The recording paper is moved to the cutting position only when the line is disconnected, and the above-mentioned movement and feeding operation is not performed when the line is continuously connected and there is a possibility that the next receiving operation will be performed. This has the advantage of reducing waste of recording paper corresponding to the distance from the recording position to the cutting position, compared to conventional circuits that always transport the recording paper for each receiving operation. .

In addition, since the recording paper is always automatically transported by a certain amount corresponding to the distance between the reading position and the cutting position, there is no possibility of malfunctions such as the recording being cut midway. There is no danger of this, and it is suitable to implement it in a facsimile receiver.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a recording paper discharge control device according to the present invention, and FIG. 2 is a flowchart for explaining its operation. 1 Ni-step pulse generation circuit, 2: Pulse motor drive circuit, 3: Pulse motor, 4: Counting circuit, 5: Control circuit,
6: Hookup detection circuit, 7: Reception completion storage circuit, 8
: Paper feed memory circuit.

Claims (1)

[Scope of utility model registration request] In a facsimile receiver that uses a roll of recording paper and is equipped with a cutter mechanism at the ejection position of the recording paper to cut the recording paper after the reception operation is completed, the recording paper is ejected from the recording position. means for detecting and storing a reception completion state; means for detecting disconnection of the facsimile line; and when the storage means detects reception completion, the detection means detects the facsimile line 2. A recording paper ejection control device for a facsimile receiver, comprising a control means for activating the transporting means when cutting of the recording paper is detected.