JPS62216468A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To surely perform a facsimile transmission by previously setting the size capable of receiving and making the set size capable of receiving respond to a transmission side irrespective of the selection state of the recording paper of a device at the time of starting to receive. CONSTITUTION:Since the facsimile equipment operates basically as a copying machine, the reception of the facsimile is carried out as an interruption operation to the copying operation. During the copying operation, when the size of the recording paper selected is directly made to respond to the transmission side as the size capable of receiving, an inconvience may be produced, so that the size capable of receiving is previously set to a standard, for instance, the format of A4, and in the procedure before the transmission, this set size capable of receiving is made to respond to the transmission side. The setting of the size capable of receiving can be inputted from an operation display part 19. A received picture is stored in a picture memory 15, and when the received picture can be recorded and outputted at that time, it is recorded and outputted when the picture of one sheet is completed to be received.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a facsimile device formed by adding a communication function to a so-called digital copying machine.

[Prior Art] In recent years, digital copying machines have been proposed that are configured by combining a document reading device that digitally reads document images and a page printer (for example, a laser printer) that records images page by page at a predetermined resolution. I'll keep it.

By using such a digital copying machine, in addition to simple copying operations, it is possible to copy an edited image, or to copy an image that has been processed by adding some processing.

Furthermore, this digital copying machine can be used as a hard copy device for an information processing device such as a personal computer, or can be used as a facsimile device by adding one communication function.

However, when a digital copying machine is added with a communication function and used as a facsimile machine, the following problems may occur.

That is, a digital copying machine is usually equipped with a plurality of paper feed cassettes so that an operator can select a desired size of recording paper, and this selection of recording paper is performed manually. Therefore, when performing a receiving operation as a facsimile machine, which size of paper is selected at that time depends on the selection made by the operator who was using the facsimile immediately before.

Therefore, if the recording paper size selected at the start of reception is directly responded to the sender as a receivable image size, there is a risk that an unintended size will be returned and the sender will be unable to deal with it. be.

[Objective] The present invention has been made to solve the above-mentioned disadvantages of the prior art, and an object of the present invention is to provide a facsimile device that can reliably receive images.

[Configuration] In order to achieve this object, the present invention responds to the sending side with standard size information for facsimile transmission, regardless of the recording paper size selected at the start of reception.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a facsimile machine according to one embodiment of the present invention.

This facsimile machine includes a document transport device 100 that transports a document to a contact glass (described later). A scanner 200 that decomposes an image of a document positioned on a contact glass at a predetermined resolution and photoelectrically converts the image, and the scanner 200
The copying machine 300 records the image read by the printer on recording paper of any size stored in three paper cassettes, and is equipped with a double-sided copying function, and is basically a well-known so-called digital copying machine. It has the same configuration as the machine.

In the document conveyance device 100, documents placed on a document table 101 are fed one by one by a feed roller 102, and are positioned at a predetermined position on a contact glass 201 by a conveyance belt 103. After the image of the original is read, the original is removed from the contact glass 201 by the conveyor belt 103 and ejected onto the ejection tray 104.

In the scanner 200, an image of a document positioned on a contact glass 201 is scanned in the direction of the arrow by an optical system 202, and the image obtained by scanning (hereinafter referred to as scan light) is focused on a line image sensor 203. It is imaged.

The line image sensor 203 decomposes the scan light of the scan line of the optical system 202 into a predetermined number of pixels and photoelectrically converts the image of each pixel, thereby forming electrical image information. The resolution of this scanner 200 is
15.4 dots/mm in the main scanning direction and 15 dots/mm in the sub scanning direction
．． It is set at 4 lines/mm (400 dots/inch). This resolution is twice the standard resolution of facsimile machines (3.85 dots I"/mm in the main scanning direction and 7.7 lines/mm in the sub-scanning direction). is 4 times higher and has a higher resolution (7 in the main scanning direction).
．． 7 dots/mm and 7.7 lines/+nm in the sub-scanning direction
) in both the main scanning direction and the sub-scanning direction.

In the copying apparatus 300, a drum-shaped photoreceptor 302 is irradiated with laser light output from a laser writing section 301 that scans laser light modulated according to image information. Note that the recording resolution of the copying apparatus 300 is set to the same resolution as that of the scanner 200.

This photoreceptor 302 is rotated in the direction of the arrow, and
Its surface is uniformly charged by the charger 303, and the charged surface is exposed to laser light to form an electrostatic latent image corresponding to the recorded image (image information). 1-toner development is performed.

On the other hand, three paper feed cassettes 305, 306, 307
The recording paper stacked in the selected one is
Paper feed rollers 30g, 309, and 310 corresponding to the paper feed cassettes 305, 306, and 307 feed out one sheet at a time, starting from the one located at the top. The recording paper sent out by the paper feed rollers 30g, 309, and 310 in this manner is sent out to the photoreceptor 302 by the registration roller 311 at the timing when its leading edge coincides with the leading edge of the toner image.

The recording paper sent to the photoconductor 302 is brought into close contact with the photoconductor 302 by a transfer charger 312 and a toner image is transferred thereto, and then separated from the photoconductor 302 by a separation charger 313, and then the toner image is fixed by a fixing device 314. fixed on the surface. Then, the recording paper that has been fixed is transferred to the distribution section 3.
15 and a reversing section 316, and is conveyed to a discharge roller 317 and discharged outside the machine.

The recording paper discharged outside the machine is sorted 318 into either a stacker 319 that stacks recording paper on which a copy image is recorded during a copying operation, or a stacker 320 that stacks recording paper on which a received image is recorded during facsimile reception. Can be sorted.

Further, the distribution section 315 sorts the recording sheets on which images have been recorded to either the reversing section 316, the ejection roller 317, or the conveying section 321;

This is for conveying the recording paper on which the image on the first side is recorded to the registration rollers 311 again during double-sided copying.

Further, residual toner on the surface of the photoreceptor 302 is removed by a cleaning unit 322, and residual charge is removed by a static elimination lamp 32.
removed by 3.

An example of the distribution section 315 is shown in FIG.

In the same figure, 315a, 315b, 315c, 31
5d are conveyance rollers 315e and 315f that convey records;
is a branch plate for switching the conveyance path of the recording paper.

When the recording paper is discharged in an inverted state, that is, with the side on which the image is recorded facing down, the branch plate 315e is biased in the A1 direction, and the branch plate 315f is biased in the A3 direction.

Then, the recording paper passes sequentially through the transport paths A11B, H2, and E and is transported to the discharge roller 317.

It is ejected from the aircraft.

When the recording paper is discharged as it is, that is, with the image recording surface facing up, the branching plate 315e is biased in the A2 direction. Then, the recording paper passes through the conveyance path, is conveyed to the discharge roller 317, and is discharged outside the machine.

1 branch plate 315a when sending the recording paper to the transport section 321
is biased in the A1 direction, and the branch plate 315f is biased in the A4 direction. Then, the recording paper sequentially passes through the transport paths A, C, C, II, G, and H and is sent to the transport section 321.

FIG. 3 shows an example of the control system of this facsimile machine.

In the figure, an output image signal from a line image sensor 203 is amplified to a predetermined amplitude by an AGC (variable gain control) amplifier 11, converted to a digital signal with a predetermined number of bits by an analog/digital converter 12, and then sent to an image processing unit 13. added to.

The image processing unit 13 performs shading correction processing to correct variations in the level of image signals caused by variations in the characteristics of the optical system 202 of the scanner 200 and the light receiving characteristics of each bit of the line image sensor 203.

γ correction processing that corrects the difference between the image reading characteristics of the scanner 200 and the human visual characteristics and converts the image read by the scanner 200 into a visually optimal image; MTF correction processing that eliminates image blur; newspaper Background removal processing to properly extract images of originals with dark or dirty backgrounds such as , halftone processing to create pseudo-gradation of images, and characters to be binarized The present invention is intended to realize character/halftone separation processing for separating a part from an image to be subjected to halftone processing, as well as various other image processing.

The image information processed by the image processing section 13 is compressed by the image processing section 14 using the most efficient method, and image data corresponding to the compressed image information is stored in the image memory 15. The image memory 15 has a storage capacity capable of storing image information of several tens of compressed standard originals (for example, about 20 to 60 images), and its writing and reading operations are controlled by the memory control unit 16. controlled.

The image data read from the image memory 15 is restored to the original image signal by the image processing section 14, and the restored image signal is applied to the laser diode driver 17, whereby the image is output from the laser diode 18. signal(
A laser beam modulated by the image information) is generated.

Note that this laser diode 18 is used in the copying machine 1300.
It is provided in the laser writing section 301 of. The image processing unit 14 also executes density conversion processing to convert the linear density of the image and scaling processing to reduce or enlarge the image.

The operation display section 19 includes operation keys necessary for operating the facsimile apparatus as a copying machine and a facsimile machine, and a display for displaying the operating status and operating procedures of the facsimile apparatus. As an operation key,
For example, a start key for starting a facsimile transmission operation, a copy key for starting a copying operation, a stop key for stopping a copying operation, a numeric keypad for inputting numerical data such as the number of copies, a telephone number, etc. It includes abbreviation keys for entering numbers, mode keys for setting various operation modes of the facsimile machine, and guidance keys for selecting selection items displayed on the display. Further, a liquid crystal display device or the like having a high degree of display flexibility is used as the display device, and message information of the operating procedure, numerical values input using the numeric keys, the actual number of copies, etc. are displayed.

The DF control section 20 controls the document feeding device 100, the scanner control section 21 controls the scanner 200, and the copy control section 22 controls the operation of each part of the copying apparatus 200. . And these DF
The control section 20, the scanner control section 21, the copy control section 22, the image processing section 13, the memory control section 15, and the laser diode driver 17 have their respective operation timings, operation modes, etc. controlled by the system control section 6. Furthermore, the memory control section 15 and the copy control section 22 exchange information for synchronizing the operation of the laser writing section 301.

The facsimile control unit 24 executes a transmission control procedure for facsimile transmission, and the image compression/decompression unit 26
, controls the modem 27 and network control device 28 to transmit and receive image information. The facsimile control section 24 also exchanges control information and the like with the system control section 23 and the memory control section 16.

The image compression/expansion unit 26 compresses the image to be transmitted using a code compression method used in facsimile transmission, and also expands the received image into the original image signal, and is capable of performing compression/expansion processing using a plurality of code compression methods. .

The modem 27 modulates digital data into a waveform that can be transmitted via an analog line and demodulates the received signal into the original digital data, and can perform modulation and demodulation processing using a plurality of modulation methods. For example, Gl, G2
．． It is composed of units for realizing each modulation/demodulation process in the G3 facsimile mode.

The network control device 28 connects this facsimile device to a transmission line (
In this case, it is used to connect to the public telephone line (public telephone line) and has an automatic call/receive function.

Note that input data from the operation display section 19 is notified to the facsimile control section 24 via the system control section 23, and display data from the facsimile control section 24 to the operation display section 19 is notified to the operation display section via the system control section 23. 19, and is also output from the facsimile control section 24 to the image processing section 13.
．． 14 is also output via the system control unit 23.

Now, the operation during double-sided copying with the above configuration will be explained.

First, the operator places the original (two or more sheets) to be copied on the original table 101 of the original transport device 100, sets the duplex copy mode from the operation display section 19, and selects the recording paper size that corresponds to the original. If you want to make more than one copy, enter the number using the numeric keypad.

In this state, when the operator turns on the print key (
(See FIG. 4(a)), the system control unit 23 instructs the DF control unit 20 to convey the first document, and as a result, the document conveyance device 100 transfers the first document to the contact glass 201. transported and positioned (fourth
(See figure (b)). When this conveyance is finished.

The OF control unit 20 notifies the control unit 23 of the completion of conveyance.

Upon receiving this notification, the system control unit 23 causes the scanner control unit 21 to start reading the image, notifies the copy control unit 22 of the size of the recording paper selected at that time, and sends out the recording paper to record the image. Commands to form an image on paper.

As a result, the scanner 200 moves the optical system 202 in the scanning direction, and the line image sensor 203 operates in synchronization with the movement to read the image of the first document. Further, the optical system 201 returns to its original position after one reading is completed (see FIG. 4(c)), and at the same time, the copy control unit 22 controls the paper feed roller 305
a is activated (see FIG. 4(f)) to feed out one sheet of recording paper, and at the same time execute a predetermined image forming process (see FIG. 4(g)).

At this time, the image signal output from the line image sensor 203 is subjected to predetermined processing by the image processing section 13, and then compressed by the 1-image processing section 14 and stored in the image memory 15 (see FIG. 4(d)). reference).

Then, in parallel with the storage in the image memory 15, the image signal before being stored is applied to the laser diode driver 17.

As a result, the first image is recorded on the first side of the recording paper. At this time, the branch plate 315e is urged in the A1 direction (see FIG. 4(j)), and the branch plate 315f is urged in the A1 direction.
Since it is biased in three directions (see FIG. 4(k)), the recording paper on which the image is recorded on the first side is transferred to the distribution section 31.
5 to the reversing section 316 and then to the distributing section 3 again.
15 to the conveying section 321, and this conveying section 321
It is then conveyed to a position immediately in front of the registration rollers 311 (see FIG. 4(h)).

On the other hand, when the image reading of the first original is completed, the DF control unit 20 discharges the original and conveys the second original to the contact glass 201 for positioning. Therefore, when the recording paper on which the image is recorded on the first side is repositioned to the registration rollers 311, the second
A sheet of original is positioned on the contact glass 201.

In this state, the system control unit 23 controls the scanner drive unit 21.
At the same time, the copy controller 22 is instructed to start reading the image and to form an image on the recording paper waiting just before the registration rollers 311.

At this time, the line image sensor 20 of the scanner 200
The image signal outputted from 3 is subjected to predetermined processing in 1 image processing section 13 and then directly applied to laser diode driver 17 via 2 image processing section 14.

That is, the image information corresponding to the image to be recorded on the second side of the recording paper is not stored in the image memory 15 (11).

As a result, the second original image is recorded on the back side (second side) of the recording paper on which the first original image was recorded on the first side.

At this time, the branch plates 315e and 315f are respectively A
Since it is biased in the 2° A4 direction, the recording paper with the original image recorded on both sides is distributed to the 5 distribution section 3151 and the reversing section 316.
, passes through the distribution section 315 again and is sent out to the discharge roller 312, thereby being discharged outside the machine (Fig. 4 (i)
)reference).

In this way, one sheet of recording paper with images recorded on both sides is formed and discharged.

At this time, if the operator has set the number of copies to be 2 or more, the system control unit 23 reads out the image of the first side stored in the image memory 15 (the fourth
(see figure (a)), the image decompression unit 16 outputs the document and records it, and since the second document is positioned on the contact glass 201 at this time, it is read and the image on the second side is recorded. be recorded.

Further, when the copying for the number of copies is completed, the system control unit 23 instructs the OF control unit 2o to eject the original located on the contact glass 201.

In this way, the image of the first document to be copied on both sides is stored in the image memory 15, and the second document remains positioned on the contact glass 201, and the first document image of the second and subsequent copies is stored in the image memory 15. When recording the image of the first page, the stored image information is read out and used. Also, since the image of the second page is the one read by the scanner 200, the image of the first page is used. There is no need to store recorded paper internally.

By the way, if the image memory 15 has a large storage capacity and can store a plurality of original images, the image on the first side and the image on the second side can be stored.
Images of the surface can also be stored in the image memory 15.

The operations of each part in this case are as shown in FIGS. 5(a) to 5(k).

That is, both signals obtained when the second original is read are also stored in the image memory 15, and similarly to the first original, an uncompressed image signal is applied to the laser diode driver 17. .

By doing so, the time required for double-sided copying can be shortened.

The operations of other parts in this case are shown in Fig. 4(a) to (
Since this is the same as explained with reference to k), the explanation thereof will be omitted.

Next, the operation when operating as a facsimile machine will be explained.

Now, in the facsimile transmission procedure, let us take an example of this in the sixth section.
As shown in the figure, when the sending side calls the receiving side (calling signal CNG) and the line is established.

The receiving side responds with a called station identification signal CED indicating that it is a non-voice terminal, and then responds with a digital identification signal DNS indicating the receiving function of its own station.

The sending side selects the function to be used for the facsimile transmission from the contents of the received digital identification signal DIS, displays it in the digital command signal DC3 to notify the receiving side, and sets the modem to the transmission speed selected at that time. Set the speed 1
．． Execute 5 seconds of training (Training Check TCP).

If the result of this modem training is good, the receiving side responds with a reception preparation confirmation signal CFR to the transmitting side and prepares to receive images at the modem speed at that time.

Reception f! Upon receiving the preparation confirmation signal CFR, the transmitting side sends a training signal TNG corresponding to the modem standard training sequence corresponding to the set modem speed, then transmits the image information MSG of the first page, and displays the subsequent image. If there is a multipage signal MPS, the multipage signal MPS is transmitted.

If the receiving side can properly receive the received image at that time, it responds with a message confirmation signal MCF and prepares to receive the next page of images.

The transmitting side, which has received the message confirmation signal MCF, transmits the training signal TNG again, then transmits the image information of the second page, and then transmits the procedure end signal EOP when ending the transmission.

The receiving side responds with a message confirmation signal MCF in the same way as for the first page, and when the transmitting side receives this message confirmation signal MCF, it transmits a disconnection command signal DCN to disconnect the line and end the facsimile transmission.

Further, the receiving side that receives this disconnection command signal DCN disconnects one line.

A series of such facsimile transmission procedures is executed to transmit the image. At this time, training check TC
A high-speed modem of 2,400 to 9,600 bps is used to transmit P and image information.9For example, a digital identification signal DIS
300bps for transmission of other transmission control procedure signals such as
A low speed modem is used. Note that the transmission control procedure signal shown here is a part of the transmission control procedure signal defined in the facsimile transmission procedure. This facsimile transmission procedure is standardized by Recommendation 7.30 of the CCITT (International Telegraph and Telephone Consultative Committee).

The transmission control procedure signal basically has a frame structure of a high-level data link control (IDLC) procedure as shown in FIG. 7, and includes two 8-bit flag sequences F, an 8-bit address part A, 8-bit control unit C18
It consists of a bit facsimile control section FC, an n-bit facsimile information section FI, a 16-bit flag check sequence FC3, and an 8-bit flag F.

The flag F consists of a bit string rolllllloJ, and the address part A consists of a bit string rllllllllllJ, which is a global address for attacking an unspecified party.
Control unit C accepts unnumbered frames rlloOXO
It consists of a bit string OOj (X is "0" for a non-final frame and "l" for a final frame), and is
C consists of a bit string for each transmission control procedure signal, and the facsimile information section FI transmits transmission control procedure signals (DIS, DC3, DTC, NSS) with parameters.
, NSF, etc.), and the flag check sequence FCS is a CRC (Cyclic Redundancy Check) obtained by applying a predetermined generator polynomial to the bit string from address field A to facsimile information field FI.
Consists of a code bit string.

An example of the contents of the facsimile information section FI is shown in Table 1 on the next page. (Left below) Qi 1 Digital identification signal DIS and digital transmission command signal DTC
The bit is “1” in the facsimile information field FI of
The facsimile information field FI of the digital command signal DO5 has selected the function of the bit number whose bit is set to "1". There is. Further, when the extension field with bit number 24 is set to "1", it is displayed that an 8-bit extension field is added after it and the number of bits of the facsimile information field FI is 32 bits in total.

Now, when the operator sets the original to be transmitted on the original table 101 of the original transport device 100, selects the facsimile mode on the operation display section 19, inputs the destination, and turns on the start key to start the transmission operation, the system control The unit 23 transmits data inputted by the operator to the facsimile control unit 2.
4 to start the facsimile transmission operation, and also instruct the OF control section 20 to convey the transmission document. As a result, the original to be transmitted is positioned on the contact glass 202 by the original transport device 100, and its size is determined, and the result is sent to the facsimile controller 20 by the OF controller 20 via the system controller
will be notified.

Now, the operator selects the immediate transmission mode and selects one destination.
If one is selected, the facsimile control unit 24 transfers the destination's telephone number to the network controller @ 28, makes a call to the destination, and when one line is established, executes the above-mentioned transmission control procedure and performs the destination's reception function. 91, select the one you want to use, and notify the destination.

At this time, the size that can be received by the destination is compared with the size of the document to be sent, and if they are different, the image of the document to be sent is resized and sent to the size that can be received by the destination. Table 2 on the next page shows the relationship between the size, the size of the original to be sent, and the magnification ratio6. However, in facsimile machines that can use many types of recording paper, such as the device in this embodiment, the recording paper may be selected depending on the recording paper that is actually set. In such cases, such a wide range of scaling factors may be applied.And of course, in such cases, the pre-transmission procedure must signal its capabilities, such as by non-standard equipment signals, and Inform the other party of all the papers.

By the way, when reducing the image of the transmitted document, if the reduction ratio is large, the reduced image becomes difficult to see.

Image quality at the destination may deteriorate significantly. Therefore, the facsimile control unit 24 executes the process shown in FIG. 8 to set the reading line density according to the magnification.

In this process, first, a magnification is selected based on the above-mentioned relationship (process 30), and it is checked whether the magnification is 86% or more (judgment 31).
). When the result of this judgment 31 is NO, the magnification is further divided by 71% (decision 32).

If the result of this judgment 32 is YES, the reading linear density set at that time is 3.85 lines/+a.
m (judgment 33), and if the result of this judgment 33 is YES, the reading linear density is set to 7.7 lines/mm (process 34).

If the result of judgment 32 is No, check whether the linear density is set to 15.4 lines/mm (judgment 35);
When the result of this judgment 35 is No, the reading linear density is set to 15.4 lines/mm (process 36).

In this way, when the magnification is 71 to 86%, it is read with a linear density of at least 7.7 lines/mm, and the magnification is 71 to 86%.
When it is smaller than 1%, it is read at a linear density of 15.4 lines/mm. That is, the higher the reduction ratio, the higher the resolution is read, so deterioration of the reduced image can be suppressed, and therefore small characters etc. that appear in the received image can be reliably read.

Then, the magnification and reading linear density set in this way are notified to the image processing unit 14 via the system control unit 23, and the scanner 200 is thereby
．． The image read at a resolution of 15.4 dots/mm in the sub-scanning direction is subjected to processing such as predetermined image quality correction by the image processing section 13, and
4, the data is subjected to linear density conversion and scaling using the linear density and magnification set at that time, and is transferred to the facsimile control unit 24. The image is then code-compressed by the image compression/decompression unit 26 using the set encoding method, modulated by the modem 27 using the set modulation method, and transmitted to the destination via the network control device 28.

In this way, when there is one destination in the immediate transmission mode, the read image is not stored in the image memory 15 but is directly transferred to the facsimile control unit 24.

Furthermore, when the time-specified transmission mode in which the transmission time is specified and the broadcast transmission mode in which multiple destinations are set, the image of the transmission document read by the scanner 200 is processed by the image processing unit 13 in a predetermined manner. After undergoing processing such as image quality correction and being compressed by the single image processing unit 14, the image is temporarily stored in the image memory 15. Also, at this time, the conditions for transmission, such as the transmission time and destination information, input by the operator are stored in the facsimile control unit 24.

Then, the image information is sequentially transmitted to the specified destinations when the specified transmission time has arrived in the time-specified transmission mode, or when the storage of image information has finished in the single-report transmission mode.

When transmitting this image information, first, the facsimile control unit 24 selects one destination if one is specified, or selects one destination if multiple destinations are specified, and processes the corresponding one. The telephone number information is transferred to the network control device 28 and a call is made to the destination.

Then, the transmission control procedure is executed in the same manner as described above, and the eighth
The process shown in the figure is executed to select a variable magnification and linear density based on the relationship between the original size and the receivable size, and set the variable magnification and linear density in the image processing section 14.

When starting the transmission of image information, the facsimile control section 24 instructs the memory control section 16 to sequentially read out the accumulated image information from the image memory 15, and also sends the facsimile information to the image processing section 14 through the system control section 23. The controller 24 is commanded to make a selection. This results in
The image information read out from the image memory 15 is sent to the image processing section 1
4, the signal is restored to the original image signal, subjected to density conversion processing and scaling processing, and then applied to the facsimile control section 24.

The image signal applied to the facsimile control unit 24 is
The image is code-compressed by the image compression/expansion section 26.

After being modulated by modem 27, it is sent to the destination via network controller 28.

When the transmission of the image information to one destination is completed in this way, if a plurality of destinations are set, the destinations are selected one after another and the same process is repeated to transmit the image information to all the destinations. Then, the image information whose transmission has been completed is deleted from the image memory 15.

Next, the operation when receiving a facsimile will be explained.

Now, since the apparatus of this embodiment basically operates as a copying machine, facsimile reception is realized as an interrupt operation for the copying operation of the copying machine.

Therefore, if you respond to the sender with the size of the recording paper selected during the copying operation as the receivable size, it may cause some inconvenience, so set the receivable size in advance to a standard size, such as A4 size. In the pre-transmission procedure, this set receivable size is responded to the transmitting side. Note that this receivable size setting can be made on the operation display section 1.
It can be input from 9.

Further, the received images are temporarily stored in the image memory 15, and if the received images can be recorded and outputted at that time, they are recorded and outputted when the reception of one image is completed. However, if recording paper of the receivable size set at this time is not set, and if 84-size recording paper is set, the recording will be output at the same size on this 84-size recording paper, and If no recording paper has been set, a message is displayed on the operation display section 19 instructing you to set A4 size recording paper, and no image is recorded. Note that the setting of the recording paper size to be selected next can be input from the operation display section 19.

Further, when a call is made during a copying operation and reception is started, the received image is stored in the image memory 15 until the usage rate of the image memory 15 reaches a predetermined value, for example, 80%. %, the copying operation being executed at that time is forcibly interrupted, and the received image is read out from the image memory 15 and recorded and output. At this time, the received image read out from the image memory 15 is deleted from the image memory 15.

When the usage rate of the image memory 15 drops to a predetermined value, for example 10%, the interrupted copying operation is restarted, and when the copying operation is completely finished, the remaining received images are recorded and output. In addition, in order to restart the copying operation after it has been interrupted, various parameters for the copying operation at the time of interruption (for example, recording paper size, number of copies, number of copies, density, etc.) are internally saved, and when restarting, the various parameters for the copying operation are saved internally. Parameters are restored internally. Note that the recorded matter formed by the copying operation is discharged to the stacker 319, and the recording paper on which the received image at the time of facsimile reception is recorded is discharged to the stacker 319.
It is discharged at 20.

An example of the operation at the time of reception is shown in FIG.

First, the facsimile control unit 24 executes a predetermined pre-transmission procedure (40), sets the modem speed and encoding method set there in the modem 27 and the image compression/decompression unit 26, and transmits one page transmitted. It demodulates the image information and restores it to the original image information, and transfers the restored image information to the image processing section 14 and stores it in the image memory 15 (
Processing 41).

Then, check the usage rate of the image memory 15 at the time of -, and if it is 80% or more (result of judgment 42 is NO), a hail flag FS is sent to indicate that the copy operation has been interrupted.
is set (decision 43), and if the result of determination 43 is NO, it is determined whether a copy operation is currently in progress (decision 44).

If the result of this judgment 44 is NO, image recording processing 45 is executed to record one page of received images, and it is checked in judgment 46 whether or not the reception has been completed, and if the result of this judgment 46 is No, Returning to process 41, if YES, it is checked whether the received image stored in the image memory 15 has disappeared (judgment 47), and if the result of this judgment 46 is NO, the process returns to judgment 44, and if the result of judgment 46 is If YES, exit from this process.

When the result of the judgment 42 is YES, the copy process being executed at that time is interrupted, a message to that effect is displayed on the operation display unit 19, and at the same time, the data for the copy process at that time is saved (48). , after setting the flag FS (processing 49), image recording processing 50, which is the same as processing 45, is performed.
Execute.

Then, it is determined whether the usage rate of the image memory 15 has become 10% or less (determination 51), and the result of this determination 51 is NO.
When this happens, the process returns to the image recording process 50, and when the result of the determination 51 is YES, the process returns to the process 41.

If the result of the judgment 43 is YES, the data for the copy process that was saved is restored, a message to that effect is displayed on the operation display section 19, and the interrupted copy process is restarted (52), and the flag FS is set. Reset (processing 53)
.

Therefore, if a call is made and facsimile reception is started while no copying operation is being performed.

The result of judgment 42 after completing process 40.41 is No.
, since the result of judgment 43 is NO1 and the result of judgment 44 is NO.

Immediately after receiving the image for one page, the received image is recorded and output in process 45. Furthermore, since the result of judgment 46 is NO when this process 45 is completed, the process loop from process 41 onwards is repeatedly executed until the receiving operation is completed.

Furthermore, if the operator starts copying during this reception, the result of judgment 44 becomes YES and the process returns to process 41, so the received image is not recorded. Therefore, each time the received image of one page is received, The usage rate of the image memory 15 increases.

If the usage rate of the image memory 15 exceeds 80% during this copying operation, the result of judgment 42 becomes YES, the copying operation is interrupted, the flag FS is set, and the usage rate of the image memory 15 becomes 10% or less. Process 50 is repeatedly executed until the time is reached. Then, when the usage rate of the image memory 15 becomes 10% or less, the usage rate of the image memory 15 will be 80% or less when the next page of images is received and stored, so the result of judgment 42 is becomes NO, and in this case, the result of judgment 43 becomes YES, so the interrupted copy operation is restarted and the flag FS is reset.

Also, when the copying is completed and the result of judgment 44 becomes No,
If the reception operation has been completed, all the remaining received images are recorded and output, and if the reception operation has not been completed, the reception image for one page is recorded and outputted, and then the image of the next page is received.

Additionally, if facsimile reception is started during a copy operation, the received image from the first page is accumulated in the image memory 15, and the copy operation ends when the usage rate of the image memo January 5 exceeds 80%. After that, the accumulated received images are sequentially recorded and output.

FIG. 10 shows an example of processing when one page of received images is recorded and output.

In this process, first, it is checked whether A4 to A84 recording paper is set (judgment 60.61). Selectively process 307 6
2.63), if no recording paper is set, it is displayed that the specified recording paper is not set, and the received image is not recorded at this time (process 64).
). Note that if the usage rate of the image memory 15 exceeds 100% as a result of this process 64, it is possible to record the received image in A4 size among the recording paper set at that time without reducing it. For example, if you have A3 size recording paper, select it, and if you don't have such size recording paper, you can reduce it to B5 size or A5 size recording paper and output it by reducing it by one step. You can also.

When A4 or B4 recording paper is selected, it is checked whether the length of the received image to be recorded is shorter than the selected recording paper based on the number of lines of the received image (judgment 65).
), when the result of this judgment 65 is YES, the received image is recorded at the same size (process 66).

When the result of judgment 65 is No, it is checked whether the length of the received image is 110% or less of the length of the selected recording paper (judgment 67), and the result of judgment 67 is YES.
When this happens, the received image is reduced at a scaling factor of 90% and recorded on one sheet of recording paper (process 68), and judgment 67 is performed.
If the result is NO, the received image is divided and recorded on a plurality of sheets of recording paper at the same size (process 69).

Then, the received image whose recording has been completed is deleted from the image memory 15.

In this way, the received image for one page is recorded and output, and at the same time, the received image is deleted from the image memory 15.

Note that when recording and outputting the received image in processes 66, 68, and 69, the facsimile control unit 24 sends a message to the system control unit 23.
The received image and magnification ratio to be recorded are specified, and the operation mode of the image processing section 14 is set by the system control section 23. As a result, the image data read from the image memory is restored to the original image, subjected to magnification processing, and output to the laser diode driver 17 for recording.

By the way, since the apparatus of the above-described embodiment is capable of double-sided copying, the operator can instruct from the operation display section 19 to select a mode in which two pages of the received image are recorded on both sides of one sheet of recording paper. You can also choose. Further, in the embodiment described above, confidential reception is also possible. Furthermore, the reception process and the recording process of the received image can be executed in parallel.

[Effects] As explained above, according to the present invention, the receivable size is set in advance and the set receivable size is transmitted to the sending side regardless of the selection status of the device at the time of starting reception. Since there is a response, it is possible to execute appropriate transmission control processing on the sending side, and it is possible to achieve the effect that facsimile transmission can be reliably realized.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of a facsimile machine according to an embodiment of the present invention, FIG. 2 is a schematic configuration diagram showing an example of a reversing mechanism, FIG. 3 is a block diagram showing an example of a control system, and FIG. and FIG. 5 are waveform diagrams showing the operation of each part during double-sided copying, FIG. 6 is a timing diagram showing an example of a facsimile transmission procedure, and FIG. 7 is a signal arrangement diagram showing an example of the format of a transmission control signal. FIG. 8 is a flowchart showing an example of the linear density and magnification setting process during transmission, FIG. 9 is a flowchart showing an example of the reception process, and FIG. 10 is a flowchart showing an example of the image recording process. . 13.14... Image processing section, 15... Image memory,
16... Memory control section, 19... Operation display section, 20
. . . 0F (J71 document conveyance device) control unit, 21 . . . scanner control unit. 22... Copy control unit, 23... System control unit. 24...Facsimile control unit, 26...Image compression/expansion unit, 27...Modem, 28...Network control device. □/7-1 Agent Patent Attorney Crest 1) Makoto Figure 1 Figure 2 Figure 1 Side Figure 6 Figure 7 Figure 8 Figure 9 Figure 10

Claims (1)

[Claims] In a facsimile machine equipped with multiple paper feeding means for feeding sheet-like recording paper, the receivable sizes that respond to the sender and the priority order of the recording paper size to be selected when recording received images are set in advance, and the priority order of the recording paper size selected when recording received images is set in advance. If the recording paper of the set receivable size is not set in any of the plurality of paper feeding means, the facsimile device selects the recording paper on which to record the received image according to the priority order. .