JPS58127468A - Image forming device - Google Patents

Abstract

PURPOSE:To select the priority of an image forming device, by providing a means which selects either the 1st mode permitting the reception of a picture signal or the 2nd mode rejecting the reception, during image formation of a picture signal from a reading means. CONSTITUTION:An interface 401 fetches a data inputted from a private automatic branch of exchange (PABX)1. A command/image discriminating circuit 402 discriminates that the input is an image packet or a command packet. When the input is the image packet, it is inputted to a printer 406. When the input is the command packet, it is inputted to a register 411. During the forming of a local copy, when the command packet of a certain type is transmitted from the PABX1, the local copy is interrupted to select two modes whether interrupting the picture reception from the PABX1 or rejecting it, for the provision of the selection button to an operation section 416.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an image forming apparatus having a special KS copying function and an image information receiving function, such as a copying machine and a facsimile machine for transmitting images between remote locations. In recent years, with the development of technology for handling image information as electrical signals, image processing terminals that combine the functions of a copying machine and a facsimile have been proposed.

In such a terminal having two functions, the information to be processed is usually ranked in order, and one of the functions is given priority in operation. However, the ranking of information naturally differs depending on conditions such as each user or the place of installation, and a fixed ranking may be inconvenient.

The present invention has been made in view of the above points, and it is an object of the present invention to provide an image forming apparatus in which it is possible to select the ranking of image forming apparatuses having the above-mentioned two functions.

/// Hereinafter, the present invention will be explained in more detail using the drawings.

FIG. 1 is a schematic diagram of the configuration of an image transmission system according to the present invention.

In FIG. 1, 1 is a private branch exchange (hereinafter referred to as PABX). Reference numeral 2-1.2-2 is a reader device that photoelectrically captures the original image and forms an electrical signal. 3-1.3-2
is a printer device that forms an image on a recording material such as paper based on image information converted into an electrical signal (hereinafter referred to as an image signal).

Note that the reader device 2-1 and the printer device 3-1 are placed in close proximity, and one set of these two devices is the beamer device 2. −
It also operates as a copying machine in which a reader device 2-1 forms an image based on the image signal read by the reader device 2-1. (Note that this operation is called local copy.) L1, L2, and L3 are input/output lines made of, for example, optical fibers that connect the PABXI and the reader device or the printer device and are used for signal transmission including image signals. 7 image transmission stems shown in Figure 1! d:, PABXI
This is based on a wiring system called a star network centered on.

The PABXI is provided with a switching network for selectively outputting signals input from each input/output line to a predetermined input/output line, as will be described later. PABXI also connects a page memory consisting of, for example, a semiconductor random access memory IJ (RAM) that stores one page of image signals, and an auxiliary memory consisting of, for example, a disk memory that stores multiple pages of image signals. The image signal read by the reader device 2-1 is formed into an image in the printer device 3-1, or the input/output line L
At least one of three types of transmission is performed: either the image is transmitted to the PABXI and stored in the page memory through the input/output line L3, or it is further transmitted to the printer device 3-2 through the input/output line L3 to form an image.

It remains to be determined whether the image signal read by the reader device 2-2 is transmitted to the PABXI via the input/output line L2, and from there to the printer device 3-1 or the printer device 3-2 via the input/output line L1. At least one of three types of transmission is performed: or stored in the page memory.

That is, the image signal read by the reader device is transmitted to at least one of the printer devices constituting the image transmission system to form an image, or is stored in a page memory. Furthermore, it is possible to simultaneously store the information in the page memory while transmitting it to the printer device.

The image signal stored in the page memory is transmitted to the printer device or further stored in the auxiliary memory according to a request from the printer device or judgment by a control section included in the PABXI.

Although the system shown in FIG. 1 has three routes from PABXI, the number is not limited to this number.

FIG. 2 is a sectional view of one embodiment of the reader device shown in FIG. 1.

In the figure, 201 is a document table glass, 2o2 is a bar-shaped light source such as a halogen lamp or a fluorescent lamp, 203 is a first mirror, 204 is a second mirror, 205 is a third mirror, 206 is a lens,
07 is a one-dimensional solid-state imaging device such as a CCD. In addition, lens 2o6 and CCD 207! d Two sets are provided, and each half of the document area is read.

To explain the operation of the apparatus, an original placed on an original platen glass 201 is illuminated by a rod-shaped light source 202, and a first mirror 2o3, a second mirror 204, and so on scan (sub-scan) the original.
Lens 406 grins through the third mirror 405, CCD
Imaged Sarel on 407. The main scanning direction of the ccD 407 is perpendicular to the drawing. Rod-shaped light source 202 and the first
The mirror 203 is integrated by a support (not shown), and scans the document surface while moving in the direction F in the figure by a guide rail (not shown) (sub-scanning). second mirror 204,
The third mirror 205 is integrated with a support (not shown), and the third mirror 205 is connected to the first mirror 203 in the same direction as the first mirror 203.
Guide wheel (not shown) at 1/2 the moving speed of
move above. Bar-shaped light source 202° first mirror 203. Second mirror 204. The third mirror 205 is located at the positions indicated by dotted lines in the figure (202', 203').

204', 205'), but at this time, the optical path length from the document table 201 through the mirrors 203, 204, and 205 to the lens 206 is always kept constant.

Note that this reader device supports A3 size documents in the longitudinal direction.
A document of four sizes is sub-scanned in a direction perpendicular to the longitudinal direction, and the linear density of the reading is 16 lines/inm.

Further, the resolution in the main scanning direction is 16 Pel/mm.

Therefore, the number of holes per main scan line is 4752.
In A3 size, this main scanning is 6720 lines,
A4 size has 3360 lines.

As mentioned above, a CCD for photoelectrically converting the original image
Two sets of lens 207 and lens 206 are provided, and approximately one 4752-bit image outputted by main scanning can be read.
/2 each. The two series of image signals outputted from the two CODs 207 are formed into one series of image signals corresponding to one main scanning line by the circuit shown in FIG. 3-1.

In FIG. 3-1, 207-1 and 207-2 are the two CCDs mentioned above. 301-1 and 301-2 DC amplify the output voltages of the video amplifiers fCCD 207-1, 207-2</) to a required level. 302
-1 and 302-2, the analog image signal is converted into a digital signal by a clock pulse (not shown). 303 is a parallel real converter ~ medium vibration converter 30
The output of the two systems output from 2-1 and 302-2 is connected to the 3-2
Convert it to one system of unreal signals as shown in the figure and output it to the terminal O.
Output from UT.

As is clear from FIG. 3-2, a clock signal (b) synchronized with the image signal (a) is generated. Image signal (a)
The data changes at the rising edge of the clock signal (b), and the clock signal (b) falls at a stable point in the middle of the data. It should be noted that the image signals of the entire document area obtained by main scanning of 3360 lines of A4 size and 6720 lines of main scanning of A3 size are collectively referred to as an image packet. A dummy clock DCK, which is an identification signal, is attached to the tip of this image packet, so that the PABXI and the terminal can determine whether the subsequently transmitted signal is an image signal or a command signal related to the transmission of an image signal. Discern.

FIG. 4 is a perspective view showing the configuration of an embodiment of the printer shown as an example of the output section in FIG. This is a photosensitive drum rotatably supported within the Ha. Reference numeral 502 denotes a semiconductor laser that emits a laser beam La. The emitted laser beam La is made incident on a beam expander 503 and becomes a laser beam having a predetermined beam diameter. Further, the laser beam is incident on a polyhedral mirror 504 having a plurality of mirror surfaces. The polyhedral mirror 504 is rotated at a predetermined speed by a constant speed rotation motor 505. The laser beam emitted from the beam expander 503 is scanned substantially horizontally by the polyhedral mirror 504. and an imaging lens 506 having f-θ characteristics.
As a result, an image is formed as a spot light on the photosensitive drum 501, which is charged to a predetermined polarity by the charger 513.

A beam detector 507 detects the laser beam reflected by the reflecting mirror 508. Based on this detection signal, the timing of the modulation operation of the semiconductor laser 502 to provide desired optical information onto the photosensitive drum 501 is determined.

An electrostatic latent image is formed on the photosensitive drum 501 by the laser light that is imaged and scanned on the photosensitive drum 501 . After this latent image is developed by a developer 509, it is transferred to a cassette 510.
.

FIG. 5 shows an example of a circuit for modulating the semiconductor laser shown in FIG. 4 with a predetermined image signal.

The image signal input from the input terminal IN has the number of pits equal to the number of pixels for one scan for each group of image signals for one scan.
and is alternately input to the second line buffer 602 under the control of the buffer switch control circuit 603.

Further, the image signals inputted to the first line buffer 601 and the second line buffer 602 are read out alternately every scan using the beam detection signal from the beam detector 604 as a trigger signal, and are applied to the laser driver 605.

The laser driver 605 modulates and controls the semiconductor laser 606 based on the input image signal to control the emission of laser light.

By having two line buffers, while inputting image signals that are input one after another to one of the line buffers, the image signals already stored in the other line buffer are output to the laser driver 605, resulting in high-speed operation. It is compatible with image signal input.

FIG. 6 is a circuit block diagram of an embodiment of a terminal equipped with both the reader device and printer device shown in FIGS. 2 and 4. 401 is the PABXI installed in the input section of the terminal.
If the input line IL is an optical fiber, it is an optical-to-electrical converter (hereinafter referred to as a converter). Convert to electrical signal. 402 is a command/image discrimination circuit which determines whether the input bucket is an image packet or a command packet by ANDing the electrical signal input from the interface 401 with the identification signal added before the bucket and the clock as described above. However, if it is an image packet, a "1" signal is output to line 403, and if it is a command packet, a "1" signal is output to line 404. Further, a packet from which the identification signal has been removed is outputted to line 405. Reference numeral 406 denotes an image recording unit and a reader device and printer device that read an original and form an image packet as an electrical signal based on an input image packet.

407 and 408 are AND circuits, and the AND circuit 40
8 to line 4 from the command/image discrimination circuit 402
03 “1” signal is input, line 405
The image input by the line 409
Output on top.

Further, when the “1” signal on line 404 from command/image discrimination circuit 402 is input to AND circuit 407, the command packet input by line/405 is output on line 410.

Line 4 if the input bucket is an image packet
The image packet output on 09 is sent to the printer device 40.
6.

On the other hand, if the input packet is a command packet,
The command output on line 410 is input to input command register 411. The input command register 411 stores all 32-bit command packets. 415 is a command analysis and generation circuit.

When it is determined that all 32-bit command packets have been input to the input command register 411, it takes in all of these 32-bit command packets, analyzes their contents, and forms response bits and specified pits as necessary.
All 32 bits are set in the output command register 412 at the same time. - 413 is an OR circuit that connects the PABXI formed by the output line 419 of the output command register 412 and the reader device;
An output line 418 of the image signal to be sent to is input.

414 is an interface for outputting terminal signals to PABXI, and if the output line OL is an optical fiber, an electrical-to-optical converter (hereinafter referred to as a converter) is used to connect the line 417.
It converts the electrical signal input via the cable into an optical signal and transmits it to the next terminal using an optical fiber as a medium.

Reference numeral 416 denotes an operation control unit provided in the terminal, into which instructions related to sending and receiving image information and driving instructions for the device, such as destination, number of sheets to be sent, size, etc., are input by the user, and the device is operated according to these instructions. Although FIG. 6 describes an embodiment of a terminal equipped with both a printer device and a reader device, the terminal of either the reader device or the printer device has approximately the same configuration.

FIG. 7 is a circuit block diagram showing the configuration of the private branch exchange PABXI shown in FIG. 1.

The solid piece, CPU is a control unit that controls the operation of the main body of the private branch exchange PABX1 and image transmission/controls the operation of the entire stem.
1-R4 is a reader device, and P1 to P4 are printer devices, and the reader device R1, printer device P1, and reader device R2 and printer device P2 each have a copying function as only two devices, as described above. Reference numeral 701 denotes a switching network to which a plurality of input lines and a plurality of output lines are connected, and image signals and command signals inputted from the input lines are selectively outputted to the output lines by an input/output switching signal SL from the control unit CPU. 702 is a page memory consisting of a semiconductor random access memory capable of storing one page of image signals;
Reference numeral 4 denotes an auxiliary memory consisting of a disk memory for storing a plurality of pages of image signals, and its capacity is 70 MB.

A compression circuit 703 compresses the image signal stored in the page memory 702 using predetermined compression logic and sends the compressed image signal to the auxiliary memory 704.

705! d Control unit Parallel-in-real-out output command register for serially transmitting command signals related to the transmission of image signals output from the CPU to the reader device or the RI printer device connected to the exchange network. , 706 is a serial-in-parallel-out input command register for parallelly transmitting a command signal related to the transmission of an image signal input serially from a printer device or a printer device to the control unit CPU.

707 is a DMA controller that controls DMA transfer of image information within PABXI, and 708 is a font ROM 1 used to convert encoded information into image information.
By having this font ROM 708, character information can be handled using code signals in internal processing, and memory can be saved. A data memory 709 stores command signals related to image transmission or records the history of image transmission.

Explain the operation. Image signals output from the reader devices R1 to R4 are selectively input to the page memory 702 by the control unit CP[J via the exchange network 701.

Once the information is stored in the page memory 702, if the specified destination is not busy or there is no transmission/reception request from another terminal device, and the information is ready to be received, it is output as is from this page memory 702 to the destination. The structure is such that it can be used. At other times, the data is stored in the auxiliary memory 704 through the compression circuit 703. This auxiliary memory 70
4, the image signal is filed with an index added to the beginning of the image signal, and the file number, source address, destination address, etc. are written in this index. The exchange network 701 also has a function that can bypass the page memory 702 and directly send data in real time to the destination printer, and if the destination is in a state where it can receive data, it can also be sent through this route. It has become.

FIG. 8 shows a conceptual diagram of the switching network 701 shown in FIG. 7.

Terminal 8 for connecting a reader device or printer device
Six terminals 01 to 806 are provided, and an input line and an output line are connected to each terminal. Page memory 702, output command register 705 and input command register 70 still provided in PABXI
Terminals 808 and 809 are provided for connecting 6.

As described above, the operation of this switching network 701 is controlled by the input/output switching signal SL from the control unit CPU.

Six rotary switches SWI to SW6 are provided for each of the terminals 801 to 806.
6 connected to each output line. Also, terminals 807 and 808 are each provided with a rotary switch connector connected to the output line.

Input terminal a of these rotary switches w1 to Sw8
-g is also used as input line reservation for terminals other than the corresponding terminal. In addition, input terminal g of rotary switch SW71
No lines are connected to the . This is page memory 7
This is because it is not necessary to input the command signal from the output command register 705 to the output command register 705 and the image signal from the page memory 702 to the input command register 706.

The contacts of the rotary switches SWI to SW8 are selectively switched by the input/output switching signal SL input from the control unit CPU.

As an example of the operation of the switching network 701, a reader device is connected to terminal 801, a printer device is connected to terminals 803 and 804, and it is desired to transmit image information from the league device to two printer devices, but it is connected to terminal 804. If the printer connected to the terminal 803 is busy, it can be sent in real time to the printer connected to the terminal 803, stored once in the page memory 702 to the printer connected to the terminal 804, and then sent from the page memo 702 after the printer is released from the busy state. . In such a case, first select the B contact of the rotary switch 3 and the A contact of the rotary switch y, and output the image signal from the league device at the terminal 801 to the printer device at the terminal 803, as well as to the page memo IJ 702. and store it. After that, as soon as the printer device at terminal 804 becomes able to receive data,
The a contact of rotary switch history 4 is selected and the image signal output from page memory 702 is sent to the printer device at terminal 804.

Prior to transmitting and receiving image signals, protocols related to image transmission must be exchanged between the PABXI and the reader or printer by transmitting and receiving commands.For this purpose, the output command register 705 and the input command register 706 are The input command register 706 is selectively inputted from the rotary switch in FIG. Ru.

This command information packet is a 32-bit signal as shown in FIG. 9(a), and is transmitted in synchronization with the clock shown in FIG. 9(b). The contents of this command packet are given meanings as shown in FIG. 10, for example.

In addition, in this system, P from the league device and printer device is
It is not possible to directly issue a request to the ABXI, but it is possible to issue a request in response to a command packet input from the PABXI. Therefore, normally, the PABXI sets the rotary switch SWI to the g contact and sends a command, Skerato, from the output command register 705 indicating whether there is a transmission or reception request.
Next, set rotary switch 8 to g contact and terminal 8
01 will have a response from the terminal.

Furthermore, rotary switches SW2, SW3, -8
The command packets are issued in the order of W6 and are repeated periodically as shown in Figure 10. There are four types of command packets as shown in the figure. Bit is a type.

used to indicate. In Figure 10, (1) is type i
%L2) is a type 2 command packet, (3) is a type 3 command packet, and (4) is a type 4 command packet.

11(a) to 12(c) and FIG. 12 are flowcharts showing the command analysis task and idle task of the control unit CPU of the PABXI. Figure 1O and Figure 11 (
The command analysis operation will be explained using a) to (C) and FIG. 12. The command analysis tasks shown in FIGS. 11(a) to 11(c) are entered by the monitor in response to an interrupt caused by the input of a command packet to the input command register 706 of the PABXI.

The posting also returns control to the monitor, which then executes the idle task.

Assume that no image information is currently stored in the auxiliary memory 704. When the power is turned on, the control unit CPU of the PABXI executes the idle task shown in FIG. That is, since there is no file in the auxiliary memory 704 at step 12-1, the process advances to step 12-9, where command type 1 is sent.

The type 1 command packet is a command for inquiring each terminal as to whether there is a request for transmission/reception, usually by the above-mentioned boring.

When the type 1 command returns to the PABXI, it is determined in step 1 that it is a type 1 command, and the process proceeds to step 2. At this time, if there is a transmission request from any terminal in the 33rd bit, the process proceeds from step 2 to step 3 in FIG. 11(a), and a type 2 command is issued. In the type 2 command, the sender writes the destination name, number of sheets to be sent, image size, and designation as to whether the information is confidential and returns it to the PABXI. The bits of the continuation packet at the 33rd and 34th pits are provided to indicate that when it is desired to transmit to multiple terminals, it is necessary to retransmit another destination name etc. using a type 2 command. When the 15th and 16th pinots indicating classified status are set, P
The ABXI only stores the image information input to the PABXI in the auxiliary memory 704, and never sends it until there is a request to receive the file number from the destination.

When the PABXI determines in step 4 that a type 2 command packet has been input, it proceeds to step 5 and stores data in the data memory 7o.
9rf index is first created, and the source, number of destinations, size, whether it is classified or not, and reception date and time are registered.Stella 10 Image information from the source is temporarily stored in the page memory 702.
Incorporate into. (Step 7) Then, if the PABXI determines that it is classified in step 8, it generates a file number in step 8, and then stores the index on data memory 709 and the contents of page memory 702 in auxiliary memory 704 in step 10. If it is not designated as confidential, the PABXI looks at the destination of the index, issues a type 3 command, and uses the 31st bit to inquire whether the destination can receive the index (step 11).

If it is determined in step 15 that a type 3 command packet has been input to the PABXI, the process proceeds to step 16, and since the receivable bit of the 31st bit is set, it is determined in step 17 whether the response bit of the 34th bit is set. See.

If the response bit is not set, that is, there is even one destination that cannot receive data, the index and the contents of the page memory 702 related to the destination that cannot receive data are generated as a new file and stored in the auxiliary memory 704 (step 18) 0 At this time, the destination is busy.
Since the response is written to 18 bits, this time is added to the index and written, and the process proceeds to step 20.

On the other hand, if the response bit is set, a ready flag corresponding to the destination is set in step 19,
Proceed to step 20.

In step 20, it is determined whether there are any other terminals to which type 3 commands should be sent, and if there are, step 1
Returns to 1 and sends and outputs type 3 commands to the remaining terminals again.

If there are no terminals to which the data should be transmitted, the process advances to step 21 and it is determined whether ready flags corresponding to all of the designated destinations have been set. If there is a terminal for which the dif flag has not been set, in step 22 the index on the data memory 709 relating to the destination is added to the image information in the page memory 702 and stored in the auxiliary memory 704, and the process proceeds to step 23. Further, if the ready flags corresponding to all the destinations are set, the process advances to step 23.

In step 23, a type 3 command packet with the 32nd bit set, inquiring whether the reception is ready, is output to the terminal whose ready flag is set, that is, the destination capable of receiving image information.

When the command packet with the bit set asking whether reception is ready returns to the PABXI, the process moves from step 24 to step 2.
Proceed to step 5. When responses of preparation completion are received from all terminals that are not busy in step 25, image information for each number of images is sent at once from the page memory 702 to all destinations whose ready flags are set (step 26).
.

After transmitting the image information, in step 27, the PABXI transmits a type 3 command with the 33rd pit set, inquiring about the completion of transmission.

When the command packet with the bit set to inquire about reception completion returns to the PABXI, the process advances from step 28 to step 29. When a completion reply is received from the destination to which the image information was sent, the index stored in the data memory 709 is erased in step 3, and then a type 1 command packet is sent to each terminal by the idle task shown in Fig. 12. Output. Auxiliary memo 1 due to idle tasks still at the same time
If it is determined in step 12-4 that among the files stored in J704 the waiting time has elapsed, the index of that file (including the destination address and number of sheets to be sent) is stored in the data memory 709 in step 12-5. In addition, proceeding to step 12-6, the image information is loaded from the auxiliary memory 704 to the page memory 702, and further, in step 12-8, a type 3 command is issued to transmit the index input to the data memory 709. First, the image information is transmitted from the image memory 702 after the protocol is performed as described above.

In this case, the data memory 709 is transferred from the auxiliary memory 704 to the data memory 709.
and the information loaded into the page memory 702 is erased from the auxiliary memory to effectively use the capacity of the auxiliary memory 702 (step 12-7).Furthermore, for files designated as confidential, The auxiliary memo 177 is sent only when a receive request from the destination is received as a type 1 command packet, regardless of the destination's available time.
04 (step 12-2).

Furthermore, a supplementary memo! If there is a non-classified file in J 704 that has passed a predetermined period of time, the process proceeds from step 12-3 to step 12-8, and that file is deleted from auxiliary memory 704. This gives you an auxiliary memo! J704 can be used effectively.

In this way, confidential image information is not directly output to the terminal, but is stored in the auxiliary memory and can be output from PABX 1 only when there is a reception request from the destination, so that confidential information is not directly output to the destination. In addition, information is not transmitted to unattended terminals.

Also, when transmitting image information to multiple terminals at the same time,
If there is a terminal that cannot receive data, the address and image information of that terminal can be stored and the image can be transmitted to other terminals that can receive data, so it is not necessary for all terminals to be able to receive data.

Therefore, images can be transmitted in real time to terminals that can receive images, and after the unreceivable state is canceled to terminals that cannot receive images,
Image transmission is performed without changing the source.

Also, since the terminal that is unable to receive data notifies the PABXI of the time that it is unable to receive data, the receiving side can notify the PA that it is able to receive data.
Image transmission is performed without notifying BXI again.

Next, as a result of issuing a type 1 command, if there is a reception request from any terminal in step 12, a type 4 command packet is sent to the PA in step 13.
BXl is sent to the receiving request destination.

There are two types of reception requests: a request to send image information stored in the auxiliary memory 704, and a request to send a list of reception history related to sending and receiving image information. The receiving request source indicates the requested content of the request using the 5th and 6th bits of the type 4 command packet shown in FIG. 10 (4).

When the type 4 command packet returns to the PABXI, the process proceeds to step 31, where it is determined whether it is a history reception request or an image reception request based on the set state of the 5.6th bit of the command packet.

If the PABXI is a history reception request, in step 32 it sorts only the files related to the reception destination from the auxiliary memory 704, expands the index therein in the data memory 709, and further uses the font memory 708 to store the contents. It is developed into the page memory 702 and transmitted as an image.

FIG. 15 shows the form of a resume sent from KPABXI and recorded by a printer device. As shown in the figure, the file number attached when the file is stored in the auxiliary memo I 7704 is entered at the left end, followed by the source, whether it is classified or not, the date and time of issue (input), and the image size. Furthermore, it is also possible to output a transmission history that is a list of indexes related to the transmission of image information from the terminal.

The PABXI, which has sent the image information including the reception history to the reception request destination, again executes an idle task that outputs a type 1 command packet.

Here, if there is a file of image information that needs to be received on the terminal that received the reception history, send the reception request to the PABX again using the type l command back.
Send to I.

Upon receiving this command packet, the PABXI again sends a type 4 command packet to the terminal that made the reception request. The terminal that receives the type 4 command packet sends the data from the operation unit 416 to the auxiliary memory 704 according to the file number of the history table corresponding to the image information that needs to be received.
Specify the image information in the file and send it to PABXI.

The 7th to 10th bits of the type 4 command packet contain this file number, and the 11th to 14th bits indicate the number of files desired to be received.

In step 33, the PABXI loads the image information corresponding to the specified file number from the auxiliary memory 704 to the page memory 702, and
The desired number of sheets will be sent to the terminal that has received the reception request.

In this way, the 5 source terminals can transmit image information regardless of whether the destination terminal is in a receivable state.
Even if the destination is unreceivable, it is stored in the PABXI's memory for a predetermined period of time. Since each terminal can obtain the storage status of image information addressed to it in the form of a list, it is possible to easily receive the necessary information at the desired time by accessing PABXI from the receiving terminal according to this storage status. You can take it.

As mentioned above, the reader R1 and printer P11 in FIG.
The two combinations of reader R2 and printer P2 are each PAB
Copy operations independent of XI are possible. Hereinafter, this independent copy operation will be referred to as local copy. FIGS. 13 and 14 show flowcharts of terminal operation control.

Here, while creating a local copy, PABXI
When a Type 3 command packet is sent from the PABXI, either interrupt the local copy in progress and interrupt image reception from the PABXI, or reject it and wait for the Type 3 command packet.
A selection button is provided on the operation unit 416 to select between two modes: writing in the command packet and replying. At power-off, the reader/printer reads this interrupt rejection key using a key sense routine independent of the PABXI and sets/resets a flag indicating permission for interrupts (step 13-1 in FIG. 13).

Then, when a command packet is sent from PABXI, the command analysis routine shown in FIG. 14 is executed. If the input command packet is type 3, the process proceeds from steps 14-1 to 14-2, and if it is a question asking whether the 31st bit can be received, the process proceeds to step 14-3. In step 14-3, it is determined by the key sense routine described above whether or not the interrupt permission flag has been set. If iL is set, the response bit at the 34th pit of the command packet is set and output to the PABXI (step 14-4). Then, in step 14-5, an interrupt flag is set.

On the other hand, if the interrupt permission flag is not set, the time required to complete the copying operation being executed is calculated in step 14-6, and the 15th to 18th type 3 command packets are
Set the wait time for the focus, and output to the PABXI without setting the 34th response bit. After this, the above-mentioned PABXI control operation will be performed, so the explanation will be omitted.

Also, the interrupt permission flag is set and step 14
If the interrupt flag is set in -5, the interrupt flag is determined in step 12-2 each time the copy cycle of local copy ends in FIG. Abort the copy cycle and wait for the abort flag to be reset.

Then, after it is reset, execute the local copy again C.
start The interruption flag is reset when image reception ends due to an interruption.

On the other hand, if the interrupt flag is not set, step 1
The end flag is determined in step 2-4. The end flag is set at the end of local copying, and the copy cycle is repeated until it is set. If the end flag is set, the copy cycle out routine is passed and the device is returned to its initial state.

In this way, PABX being locally copied on each terminal
Since it is possible to set whether or not to permit interrupts from I for each terminal, the function can be activated according to the usage status of the terminal. Also, even if interrupts are not allowed, PAB
Since the image information to be sent to the auxiliary memory 704 in the XI is stored, no inconvenience will occur.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of the configuration of an image transmission system according to the present invention, FIG. 2 is a sectional view of an embodiment of the league device, and FIG. 3-1 is a block diagram showing the schematic configuration of the circuit of the league device of FIG. 2. 3-2 is a diagram showing an image signal output by the league device in FIG. 2, and FIG. 4 is a cross-sectional view of an embodiment of the printer device.
5 is a block diagram showing a schematic circuit configuration of the printer device shown in FIG. 4, FIG. 6 is a block diagram showing a circuit configuration of an embodiment of the terminal, and FIG. A circuit block diagram showing the configuration of the embodiment, FIG. 8 is a conceptual diagram of the switching network of FIG. 7, FIG. 9 is a diagram showing command signals, FIG. 10 is a diagram showing the contents of a command packet, and FIG. a)～
(c) and FIG. 12 are control flowcharts of the control unit in FIG. 7, FIGS. 13 and 14 are control flowcharts of the terminal operation, and FIG. 15 is a diagram showing an example of the reception history form. and 1 is PABX. 2-1 and 2-2 are beamer devices, 3-1 and 3-2 are printer devices, and 20? -1 and 207-2 are COD, s
ot is a photosensitive drum, 502 is a semiconductor laser, 415 is a command analysis/command generation circuit, 701 is a switching network, 70
2 is a page memory, 704 (Tsui'J assistant memory, 709
! if-ta) mo! J, SW1 to Sw8 are rotary switches. F L Continuation Amendment (voluntary) 1. Indication of the matter 1981 Special Edition WI No. 9860 2, Name of the invention Image forming device 3, Relationship with the case of the person making the amendment Patent applicant address 3-30-2 Shimomaruko, Ota-ku, Tokyo Name (100
) Canon Co., Ltd. Representative: Ryu Kaku 3-4, Agent Address: 3-30-25 Shimomaruko, Ota-ku, Tokyo 148
Specification to be amended, drawing 6, contents of amendment (1) Figures 10 and 13 of the drawings will be amended as shown in the attached sheet. (2) The specification shall be amended as shown in the following table.

Claims (1)

[Claims] means for reading an original disaster image, means for forming an image on a recording material, means for receiving an image signal from an external device, and an image signal from the external device during image formation using the image signal from the reading means. An image forming device characterized by: