JPS60218963A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To prevent the waste of the reception paper by inhibiting the paper feed part of a facsimile equipment at the reception side to feed the next cut paper when the reading is approximately through with a transmission original at a time point when the recording is through up to a rear end of the cut paper. CONSTITUTION:A CPU21 counts the drive pulses of a step motor 27 at and after a time point when a reading action is started. This counting action is continued up to the value equivalent to the feed length of the cut paper recorded to a reception paper size register 25. The transmission is discontinued if an optical sensor 19 does not detect a transmission original 11 yet at that time point. While the CPU21 stops also reading of the original 11 in case the original 11 is already detected and the length of the untransmitted part of the original is larger than a distance (d) between the tip of the original and the reading start position. Then a control signal generating part 28 is controlled for transmission of a multi-page record signal to the reception side. Thus the next cut paper is sent to its recording part by the multi-page record signal at the reception side.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile device that transmits an image to a facsimile device that uses cut paper as receiving paper.

[Prior art]

Many facsimile machines have conventionally used roll paper as receiving paper. Although such a facsimile machine is less prone to jamming of received paper, it requires a mechanism for cutting received paper. ■Also, even if the sent originals are the same size, the size of the cut paper received will be slightly different, making it easier to file neatly.1. - Yes. ■Furthermore, it is not possible to freely exchange and use receiving papers of different sizes, background colors, etc.

For this reason, facsimile machines that record on received paper (cut paper) that has been cut to a predetermined size have been attracting attention.

By the way, in a facsimile machine, a temporary slip may occur in the conveyance mechanism for a transmitted document.

In this case, even while the sub-scanning of the document is virtually stopped, the image sensor continues to read the image. As a result, for example, image information of a longer image size, such as 21 cm, is sent to the facsimile machine on the receiving side from a transmitted document having a length of 20 cm in the feeding direction. In such a case, in a facsimile machine that uses roll paper as receiving paper, recording is performed using a roll paper that is as long as the length of the roll paper. On the other hand, in a facsimile machine that uses cut paper, the length of the received paper in the feeding direction is constant. Therefore, if there is an untransmitted portion of the transmitted document at the stage of recording the trailing edge of the cut paper, the facsimile machine on the transmitting side transmits a multi-page recording signal to the receiving side at this point. In this specification, the multi-page recording signal refers to a signal that instructs the facsimile machine on the receiving side to feed the next cut sheet in order to continue recording the remaining portion of the same transmitted document. If the receiving facsimile machine does not have a large amount of memory,
The facsimile machine on the sending side stops reading the transmitted document until the next cut sheet reaches the recording section on the receiving side.

However, if a slight slip occurs in the conveyance mechanism of the transmitted original, even if the next cut sheet is prepared for recording,
In many cases, no image information is recorded on this. This is because there are many cases where image information does not exist at the rear end of the transmitted document, and as a result, the received paper is wasted.

[Purpose of the invention]

In view of these circumstances, the present invention has been developed so that when the reading of the transmitted document is almost completed at the time when the trailing edge of the cut paper has been recorded, the paper feed section of the facsimile machine on the receiving side starts sending out the next cut paper. An object of the present invention is to provide a facsimile machine that can prevent such transmissions from occurring.

[Structure of the invention]

According to the present invention, when a facsimile machine on the receiving side uses cut paper as a received paper, the unsent portion of the currently transmitted original is recorded at or near the trailing edge of the cut paper. There is a remaining amount detector that detects the length, and if the amount detected by the remaining amount detector is less than a predetermined value at the time when recording has been performed up to the rear end of the cut paper on the receiving side, there is an untransmitted portion on the sending side. The facsimile machine on the sending side is provided with means for stopping the transmission of the trailing edge of the document even if the transmission is terminated. As a result, if a slight slip of, for example, about 1 to 2 cm occurs, it is possible to ignore this and finish recording at the trailing edge of the received paper. In a facsimile machine that controls the feeding of received paper on the receiving side using a multi-page recording signal, it is sufficient to generate this signal only when there is a considerable amount of untransmitted portion on the sending side.

〔Example〕

The present invention will be described in detail below with reference to Examples.

FIG. 1 shows the main parts of the facsimile machine of this embodiment. Transmission documents 11 housed in a document storage section 10 of this apparatus are sent one by one to a reading section 13 by a pair of feed rollers 12. A presser roller 15 is arranged on the platen glass 14 of the reading section 13 for sub-scanning the transmitted original 11 while pressing it against the original. The transmitted original 11 on the platen glass 14 is irradiated by a fluorescent lamp (not shown), and the reflected light enters the image sensor 18 via the lens 16 and mirror 17, where it is photoelectrically converted. An optical sensor 19 is located near the platen glass 14.
is located. The forward sensor 19 is called a scan position sensor, and has conventionally been used to determine the scanning start position of the transmission document 11. That is, when only one transmission document 11 is fed out from the document storage section 1o, its leading edge is detected by the optical sensor 19, and then the transmission document 11 is further conveyed by a distance d between the detection position of the optical sensor 19 and the reading position. At that point, scanning of the transmitted original begins. The transmitted original 11 that has been read is stored in the original discharge tray.

FIG. 2 shows the main part of the electronic circuit of this facsimile machine. CPU installed in facsimile machine
(Central processing unit) 21 is connected to each part through a bus 22 and processes data. Of these, the ROM 23 is a read-only memory in which programs for performing various controls of this facsimile machine are written.

RAM 24 is a working random access memory that temporarily stores data. Received paper size register 25
is a register that stores the size of the cut paper sent from the facsimile machine on the receiving side. The motor drive control unit 26 controls a step motor 27 that transports the transmission document.
This is the circuit part that outputs drive pulses to the The control signal generating section 28 is a section that generates control signals such as multi-page recording signals. These control signals and digitized image signals are sent to a telephone line (not shown) via a demodulator 29.

The operation of a facsimile apparatus having such a configuration when transmitting image information to a receiving facsimile apparatus using cut paper will be described with reference to FIG.

When the communication of a series of control signals is completed and the send button (not shown) of the facsimile machine of this embodiment is pressed, the CPU 2
1 controls the motor drive control section 26, and the step motor 2
7 is performed (step ■). As a result, the transmission document 11 starts to be conveyed by the pair of feed rollers 12. When the leading edge of the transmission document 11 reaches above the optical sensor 19, the optical sensor 19 detects this (step
ES). Along with this, the CPU 21 also controls the motor drive control section 26.
Start counting the number of drive pulses outputted from step (2), and when the count value corresponding to the distance d shown in FIG. 1 is reached, it is determined that the leading edge of the transmitted document 11 has arrived at the reading position ( Step ■; YES). and reading section 13
to start the reading operation (step ■). Also, from this point on, the CPU 21 starts counting the number of drive pulses of the step motor 27 anew (Step 2), and continues until the count value corresponds to the length of the cut paper registered in the received paper size register 25 in the feeding direction. Count. At this point, it is determined that the image information corresponding to the size of the cut paper has been read (step (2); YES), and it is checked whether the optical sensor 19 is still detecting the transmission original 11 (step (2)).

In the facsimile machine of this embodiment, the distance d is set to 20 mm. If the optical sensor 19 does not detect the transmission original 11 (No), the transmission original 11 has already been read or there is an untransmitted portion 11A as shown in FIG.
This is a case where the length in the feeding direction is within 20 mm. In this case, no slip occurs in the feed direction, or even if it does occur, it is only slight, and the image information of the untransmitted portion 11A hardly poses a problem. Therefore, in this case, a procedure for terminating the transmission of the transmission document 11 is performed (step 2).

On the other hand, if the length of the untransmitted portion 11A in the sending direction is longer than this as shown in FIG.
), there is a possibility that a significant slip has occurred, and there is a high possibility that missing image information will become a problem. Therefore, in this case, the CPU stops driving the step motor 27 (step ■) and also stops reading the transmission document 11 (step ■). Then, the control signal generating section 28 is controlled to generate a multi-page recording signal (step 0), and the multi-page recording signal is transmitted through the demodulating section 29 to the facsimile machine on the receiving side.

When the facsimile machine on the receiving side receives this multi-page recording signal, it sends the next cut sheet to its recording section.

When the recording preparation is completed in this way (step @; Y
ES), the step motor 27 is driven and the reading operation is restarted (steps ■, ■). Then, counting of the number of drive pulses is started again, and the image corresponding to the second cut sheet is read (from step ①).

In the embodiment described above, an optical sensor called a scan position sensor is used to determine the length of the untransmitted portion of the transmitted document, but similar detection may be performed using other sensors. Furthermore, in this embodiment, it is determined whether or not to generate a multi-page recording signal at the stage when the transmitted document has been conveyed by an amount corresponding to the length of the cut paper on the receiving side in the feeding direction. It is also possible to measure the length of the section and base the decision on this.

〔Effect of the invention〕

As explained above, according to the present invention, when a slip or the like occurs, only the information at the edge of the document, which is often not actually needed, is cut, so that the received paper is wasted with a simple circuit configuration. can be prevented.

[Brief explanation of the drawing]

The drawings are for explaining one embodiment of the present invention, of which Figure 1 is a schematic configuration diagram of a facsimile machine, Figure 2 is a block diagram showing the main parts of an electronic circuit, and Figure 3 is a transmission diagram. A flowchart to explain the operation of the facsimile machine when there is only one original. Figure 4 is an explanatory diagram showing the relationship between the transmitted original and the optical sensor when there are relatively few unsent parts. Figure 5 is an explanatory diagram showing the relationship between the transmitted original and the optical sensor when there is a relatively small number of unsent parts. It is an explanatory diagram showing the relationship between the transmitted original and the optical sensor when there are relatively many parts. 11... Transmitted original, 11Δ... Unsent portion, 19... Optical sensor, 21... CPU, 23... ROM. 24... RAM. 25... Receiving paper size register, 28...
...Control signal generation section. Applicant Fuji Xerox Co., Ltd. Representative Patent Attorney Umeo Yamauchi Figure 2

Claims (1)

[Scope of Claims] 1. When the facsimile machine on the receiving side uses cut paper as a receiving paper, the document currently being transmitted at the time when recording is performed to the trailing edge of the cut paper or its vicinity; There is a remaining amount detection unit that detects the length of the unsent portion of the paper, and when the remaining amount detection unit detects the length of the unsent portion of the receiving side and the remaining amount detection unit detects the length of the unsent portion of the paper at the time when recording is performed up to the rear end of the cut paper on the receiving side, the remaining amount detection unit detects the length of the unsent portion. 1. A facsimile apparatus comprising: a document trailing edge portion transmission stopping means for aborting transmission even if an untransmitted portion exists. 2. Only when the receiving facsimile machine is recording the trailing edge of the cut paper or its vicinity, and the length of the unsent portion of the transmitted document is greater than a predetermined amount, the receiving facsimile machine will send the same message to the receiving facsimile machine. 2. The facsimile apparatus according to claim 1, further comprising signal generating means for generating a multi-page recording signal for instructing feeding of the next cut sheet for recording the original document continuously.