JPH0120831B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention relates to a reception and recording device for a facsimile communication device, and particularly to a recording device that can detect jams in recording paper even when a plurality of pages are continuously received. Regarding equipment.

(b) Background of the Technology Facsimile communication, which uses communication lines to transmit documents, graphics, etc. to remote locations, has been put into practical use. Facsimile communication is a method in which sending and receiving devices between users are connected via a communication line and documents are communicated with each other, and an image sensor is used to capture the image of a document on the sender's side using a main scanning method, which scans a horizontally written document in the horizontal direction, and a vertical scanning method. The image data is transmitted as an electrical signal by scanning in the sub-scanning direction, that is, the document feeding direction, and the receiving side receives the transmitted image data and records it on, for example, thermal paper to create the document. It is something to be reproduced. There is also a method that uses a telephone line for the line. With the spread of facsimile communication, communication processing time has become faster, and with this, it has become even more important to ensure system reliability.

(c) Prior Art and Problems Hereinafter, a conventional method will be explained with reference to FIGS. 1 to 3, taking a receiving section of a facsimile transmitter/receiver as an example. FIG. 1 is a side view showing an outline of a receiver mechanism to which the present invention is applied, and FIGS. 2 and 3 are explanatory diagrams of a conventional method.

As shown in FIG. 1, the reception section includes a reception control section (not shown) that receives transmitted signals, a paper feed section 2 that stores a roll of thermal recording paper 1 (hereinafter referred to as "recording paper"), and a recording section Thermal head 3a on paper 1
and a recording unit roller 3 that also serves as conveyance as well as sub-scanning control.
a recording unit 3 that records the received document by recording paper 1a, a cutter 4 that cuts the recording paper 1, and a cutter 4 that cuts the paper 1a,
It has a sensor 5 that detects the leading and trailing ends of the document 1a to confirm that no jam has occurred, a discharge section 6 that discharges the cut document 1a, and a storage section 7 that stores the discharged document 1a. The distances between these locations are standardized.

The conventional operation of a receiving section in which such a functional section is arranged is explained with reference to - in FIG. The document 1a is then "transferred by the margin width to the cutting position by the cutter 4, and then cut into a length of one document according to the size of the transmitted document", and the cut document 1a is sent to the output section 6 and stored in the storage section. 7, the leading edge and trailing edge of the document 1a are detected by the sensor position of the sensor 5, and normal feeding occurs with ON and OFF outputs. will be confirmed. In other words, ``the time required to move the cutter 4 by the width that the sensor 4 is waiting to turn OFF is counted'', and the sensor 5 cannot detect the trailing edge of the cut document 1a within a predetermined time and turns OFF. If this is not the case, it is determined that a jam has occurred, the apparatus is stopped, and a notification is issued by an alarm means (not shown).

Here, ``When the document 1a is cut by the cutter 4 at the cutter position, the leading edge of the unrecorded recording paper 1 that should become the next page is at the cutter 4 position'', and the distance between the cutter 4 and the thermal head 3a is Since there are too many blank spaces between pages, the next recording is started after "the recording section roll paper 3b is reversed and the recording paper 1 is retreated to the position where the recording of the next page starts." Of course, during this time, the cut document 1a is being transferred and discharged by the discharge section 6.

That is, as shown in FIG. 2, image data obtained by scanning a document is sent line by line from the transmitting side, and is sequentially stored in the buffer memory of the reception control unit and recorded on the recording paper 1. , When the transmission of one page, that is, the transmission of one page including the margins of the document on the sending side, is completed, the next page is moved, but the feeding of the document on the sending side and the receiving side during continuous transmission are There is a loss time between pages due to backtracking of the recording paper 1, etc., and this takes 1 to 2 seconds, during which time transmission is stopped. After the recording position of the next page is determined, a recording completion response is sent and the image data of the next page is transmitted.

In addition, in order to transmit efficiently and to obtain error-free recording, devices that have an error-free function that retransmits errors when an error occurs, do not record the last frame even if the last frame is received.
It may take a few more seconds. For example, 1 frame 512
As a byte, the number of encoded lines may be included in the number of hundreds of lines. To record this, if it takes 10ms to record one line, 10
It took about 11 seconds or more when it could be sent in seconds,
During this time, the transmitting side stops, resulting in loss time.

However, as communication processing speeds up, document 1
As it became possible to process A4 size A4 sheets in around 10 seconds, the above-mentioned wasted time became a problem that could not be overlooked.

Therefore, it is conceivable to transmit the frames of the next page continuously as long as the buffer memory allows, before recording the entire final frame. That is, as shown in FIG. 3, when the transmission of one page is completed, a response is immediately sent and the image data of the next page is transmitted. However, according to this method, when the recording of the previous page is finished and the next page is recorded with some blank space left, when the above margin reaches the position of cutter 4, it stops and cuts, but after cutting, the next page is also not printed. Since recording is restarted while starting the transfer with almost no interval, the cut portion of the recording paper 1 that will be the trailing edge of the previous page and the leading edge of the next page are transferred in a state that they are almost in close contact with each other. Recording is effective because it eliminates unnecessary effort at breaks between pages, but since the pages are connected, jam detection becomes a problem. That is, if the detection of the sensor 5 is not turned off within a certain fixed time after cutting the recording paper 1,
Since the recording paper 1 is conveyed at a predetermined speed between the cutter position and the sensor position, the trailing edge of the previous recorded page has passed the sensor 5 position by the time a predetermined time has elapsed after the cutter was driven. Sensor 5 output
It should be OFF, but since the leading edge of the next page is being conveyed in close contact with the trailing edge of the previous page, the detection output of sensor 5 may remain ON, even though it is not a true jam. The drawback is that the device will stop and issue an alarm if it is determined to be a jam.

On the other hand, only the cut previous page is ejected until the rear end of the recorded previous page passes the sensor position and the detection output turns OFF, and during that time, the unrecorded next page is recorded. It is also possible to stop the process, but this would result in a loss of time.

(d) Purpose of the Invention The purpose of the present invention is to solve the above-mentioned drawbacks, and even when transmission is made continuous and reception is recorded on roll paper, it is possible to continuously transport cut recording paper. Moreover, it is an object of the present invention to provide a recording device capable of detecting a jam.

(e) Structure of the Invention The present invention includes a transfer section that transfers a continuous medium, a recording section that continuously records a plurality of pages on the continuous medium transferred by the transfer section, and a transfer section that transfers a continuous medium. a cutting unit that cuts the continuous medium into lengths in units of pages; a discharge unit that transports and discharges the cut medium;
In the recording apparatus, the continuous medium is transported by the transport section, and a detection section that detects passage of the medium through the cutting section and the discharge section is disposed along a medium transport path. , further comprising a transfer control means that outputs a command to stop transferring the continuous medium after a preset time elapses from the cutting position of the continuous medium until the leading end of the continuous medium reaches the detection section,
Timing is started from the time when the continuous medium on which one page has been recorded is cut, and after the preset time has elapsed, a command output from the transfer control means is input to the transfer section to stop the transfer of the continuous medium. and outputting the command to stop the transfer of the continuous medium in response to input of a detection signal from the detection unit that detects passage of the trailing end of the cut medium that is in the process of being discharged by the discharge unit. This recording paper transport control method is characterized in that the transport of the continuous medium is controlled to be restarted by disabling the continuous medium, and in this way, the purpose can be achieved.

(f) Embodiment of the Invention An embodiment of the invention will be described below with reference to the block diagram of FIG. 4 and the operational diagram of FIG. 5.

In Fig. 4, 4 is a cutter, 4a is a cutter drive circuit, 5 is a sensor, and 5a is ON/OFF of the sensor.
A sensor detection circuit that detects the state; 6a is an ejection motor; 8 is a motor that transports recording paper; 8a is a transport motor drive circuit; 9 and 10 are counters; 11 is an ejection motor drive circuit; 12 is an AND circuit; 13 is an OR circuit. Shows the circuit.

The counter 9 is a jam detection counter that starts counting when recording the first page (previous page), and is reset when the sensor 5 detects the leading edge of the recording paper 1 within a certain period of time and an ON output (not shown) occurs. Furthermore, when one page of recording is completed, the transport is temporarily stopped, and the cutter 4 is driven (cutting the trailing edge of the recorded page), timing is started (see FIG. 5c), When the predetermined time T1 has elapsed, an output for stopping the transfer motor 8 is sent to the transfer motor drive circuit 8a, and after the previous page is disconnected within a predetermined time (T2; T2>T1). An output is sent to the sensor detection circuit 5a to monitor whether or not the sensor 5 detects the edge (sensor output is OFF). The above-mentioned time T1 is the time when the cut portion of the recording paper 1 is transported on the transport path and reaches a position slightly before the sensor arrangement position (see ΔS in FIG. 5d).

The counter 10 starts timing with the "end of recording" signal that is input when the recording of the previous page is completed, moves the recording paper 1 by the width of the margin, starts recording the next page, and then moves the recording paper 1 by the width of the margin. At time T3 when the center of the cutter 4 reaches the position of the cutter 4, the output is sent to the AND circuit 12, and is supplied to the cutter drive circuit 4a and the transfer motor drive circuit 8a via the AND circuit 12. The motor 8 is temporarily stopped when the recording paper 1 is cut by operating the motor 4a. Further, the output via this AND circuit 12 is also supplied as a reset signal for the counter 9.

The sub-scanning clock is supplied to counters 9, 10 and transfer motor drive circuit 8a.

The operation of the present invention having such a configuration and function will be explained below with reference to FIG.

During recording of a page, a "recording operation in progress" signal is supplied to the transfer motor drive circuit 8a via the ejection motor drive circuit 11 and the OR circuit 13, and the motor 8 is driven to feed the recording paper 1 and record the paper within the page. is carried out (Figure 5).

When the recording for one page is completed (Fig. 5a), the counter 1 is immediately started by inputting the "recording end" signal.
0 timing is started, the recording paper 1 is moved by an amount corresponding to the margin width between pages, the recording start position of the next page is positioned at the recording head position (FIG. 5b), and recording of the next page is started. At this time, the leading edge of the previous page, which has already been recorded, has reached or passed the sensor 5 position, and the output of the sensor 5 is ON.

Note that the ejection motor drive circuit 11 always receives a "recording operation" signal when receiving data, and the ejection motor 6a is driven at a constant speed.

At time T3 when the approximate center of the margin width of the recording paper 1 reaches the position of the cutter 4, the output from the counter 10, which measures time in synchronization with the sub-scanning clock, passes through the AND circuit 12 to the cutter 4. The signal is supplied to the drive circuit 4a and the transfer motor drive circuit 8a, and the motor 8 is temporarily stopped to interrupt the transfer of the recording paper 1, and the cutter 4 is driven to cut the recording paper 1 (FIG. 5c). At this time, the counter 9 also starts timing with the signal passed through the AND circuit 12.

The cut previous recorded page is transported in the ejection direction by the ejection motor 6 which is constantly driven, while the next page whose transport is interrupted due to inter-page cutting during recording also receives a "next page recording" signal. is input to the transfer motor drive circuit 8a via the OR circuit 13, so that recording is immediately resumed and transfer is resumed without any interval from the previous page.

The counter 9 continues to measure time in synchronization with the sub-scanning clock, and when a preset time T1 is reached, output is sent to the transfer motor drive circuit 8a to stop the motor 8 for transferring the recording paper 1. Time T1 at this time
is set so that the output is output at the time when the cut portion between the pages is transferred along the transfer path and reaches a position slightly in front of the sensor position (.DELTA.S), as shown in FIG. 5d.

The transfer motor 8 is stopped by the input from the counter 9 when the time T1 has elapsed, and the recording paper 1 that is recording the next page is stopped. During this time, the previous recorded page is ejected by the drive of the ejection motor. Because of this, there is a gap between the previous page and the next page (Figure 5 e)
It turns out.

Next, after waiting for the output from the counter 9 to be sent out after the elapse of time T2, the recording operation is restarted and the transfer of the recording paper 1 is also started.

By controlling the operation as described above, the counter 9 starts counting from the time when the recording paper 1 is cut (FIG. 5c), and when the time T1 is reached, the counter 9 starts counting the time.
Transfer of recording paper 1 is stopped with the output from (Fig. 5 d)
However, when the output at time T2 is input to the sensor detection circuit 5a, the sensor detection circuit 5a detects the following: (1) If the sensor 5 output is already OFF, the previous page has been ejected normally, so the counter 9
(2) Sensor 5 output is OFF at this point (time T2)
Even if the output changes to , it means that the previous page has been ejected normally, so reset the counter 9. (3) If the sensor 5 output continues to be ON after this point, it is determined that there is a jam during the previous page ejection. outputs warnings, etc.

On the other hand, the cut part of recording paper 1 is in front of sensor 5 (ΔS)
Of course, if the output of the sensor 5 is OFF when the recording paper 1 reaches the position, that is, when the time T1 has elapsed, the recording continues without temporarily stopping the conveyance of the recording paper 1.

In this way, the previous page is constantly ejected at a constant speed by the ejection motor, the next page is recorded by the recording head, and the transport is driven by the transport motor, and the leading edge of the next page (generally the margin If the sensor output is ON when the paper (marked as ) comes to the front of the sensor position, the paper will pause and wait for a while as the previous page continues to be transferred in the ejection direction, and when the gap between the previous page and the previous page increases, Recording and transfer are continued again, and changes in the sensor output are monitored during this time.

In this way, a jam can be detected with almost no loss time. Of course, there is no need to control the retraction of the recording paper to take margins between pages.

(g) Effects of the Invention As explained above, according to the present invention, in a system that speeds up recording by performing continuous recording, the gap between the recording paper on which the previous page was recorded and the recording paper on which the next page was recorded is Since the minimum necessary interval is provided on the transfer path without any time loss, there is an effect that jam detection can be performed accurately.

[Brief explanation of drawings]

Figure 1 is a side view showing an overview of the receiver mechanism;
3 and 3 are explanatory diagrams of the conventional method, FIG. 4 is a block diagram of an embodiment according to the present invention, and FIG. 5 is an explanatory diagram of the operation. In the figure, 1 is recording paper, 3 is a recording section, 4 is a cutter, 4a is a cutter drive circuit, 5 is a sensor, 5a
is a sensor detection circuit, 6a is a discharge motor, 11 is a discharge motor drive circuit, 8a is a transfer motor drive circuit,
9 and 10 are counters, 12 is an AND circuit, and 13 is an OR circuit.

Claims (1)

[Scope of Claims] 1. A transfer section that transfers a continuous medium, a recording section that continuously records a plurality of pages on the continuous medium transferred by the transfer section, and a transfer section that transfers the recorded continuous medium. A cutting section that cuts the length of each page, a discharging section that transports and discharges the cut medium, and a detecting section that detects passage of the medium through the cutting section and reaching the discharging section. In a recording device disposed along a medium transport path, the continuous medium is transported by the transport section,
A transport control means is provided for outputting a command to stop transporting the continuous medium after a preset time elapses from the cutting position of the continuous medium until the leading end of the continuous medium reaches the detection unit, and records the one page. After the preset time has elapsed from the time when the continuous medium is cut, inputting a command output from the transfer control means to the transfer section to stop the transfer of the continuous medium;
The command output that stopped the transfer of the continuous medium is invalidated by inputting a detection signal from the detection unit that detects passage of the trailing end of the cut medium that is in the process of being discharged by the discharge unit. 1. A recording paper transport control method, wherein the transport of the continuous medium is controlled to be resumed.