JPS61245765A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To attain sure printing even when the 1st information of a reception original exceeds the capacity of a picture memory by writing data requiring a prescribed capacity duplicatedly in the picture memory and printing out the result as they are when the data requiring a prescribed capacity or over is sent to the picture memory. CONSTITUTION:When the instant memory area receives a reception signal having the same capacity as the memory capacity, a write address reaches a jump address JA and when the memory area receives the reception signal requiring the same capacity or over, the write is started again from a start address SA. That is, a code is written duplicatedly on the instant memory area. When the write address reaches the jump address JA, an interrupt signal is generated. In this case, one print is finished for the reception by allowing printer 200 to start printing when the code is written on the instant memory area and a safe distance is reached. Thus, the 1st print is performed surely.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to facsimile.

[Conventional technique 1rlJ-a] When transmitting and receiving a facsimile, the transmitted and received signals (or the transmitted and received codes) are stored in an image memory. in this case.

A storage memory area for storing signals for a predetermined period of time in order to execute a multi-copy mode, etc., and an immediate memory area for temporarily storing signals for reception, etc. are set, and both of the above memory areas are combined into one memory. It is possible to set it. In this case, it is desirable to be able to use the storage memory area and the immediate memory area effectively, and at the same time, it is desirable to be able to use the immediate memory area reliably.

It is also possible to speed up printing by using a laser beam printer as a one-page printer. In this case, there is a desire to end the printing operation early by speeding up the print start timing.

On the other hand, when there is a lot of information on one page of the received document, the signal may be larger than the allocated capacity in the image memory. When the copy mode is employed, there is a desire to avoid printing a second sheet that would otherwise be incomplete.

[Object of the Invention] The present invention has been made in consideration of the above circumstances, and is to reliably print a received original when the information on the first original is larger than the capacity of an image memory. It is an object of the present invention to provide a facsimile machine which is capable of printing an incomplete second sheet when a multi-copy mode is adopted.

[Embodiments of the invention] FIG. 1 is a block diagram showing one embodiment of the present invention.

In the above embodiment, an image reading section 10 as an image reading system is used.
0, a laser printer 200 as a recording system, and a controller C that controls the image reading section 100 and the laser printer 200.

FIG. 2 is a perspective view showing the image reading section 100.

A predetermined original is inserted from the original insertion section 110, the image information is converted into an electrical signal by an image reading means provided inside, and the original is ejected from the paper ejection tray 120. Further, the single-image reading unit 100 is provided with an operation panel 130 and has a built-in controller C that controls the single-image reading unit 100 and the laser printer 200.

FIG. 3 is a diagram showing the operation panel.

The operation panel 130 selects the use of the storage memory area,
Standard mode, fine mode selection, mini fax,
It allows you to specify halftones, dial the other station, and perform other functions. In addition, when using the image memory to be described later as a storage memory area, the "memory" key shown in FIG. 3 is pressed.

FIG. 4 is a longitudinal sectional view showing an example of the laser printer 200.

The laser printer 200 has an fA optical device 210.

It has a developing unit 220, a paper feed cassette 230, a transfer section 240, a fixing section 250, and a stacker section 260. Exposure apparatus 210 has a laser unit including a laser 211 and a scanner including a polygon mirror 212.

The developing unit 220 includes a photosensitive drum 221 and a cleaner 222. The developing unit 220 includes a photosensitive drum 221 and a cleaner 222.
The latent image formed on the image is visualized.

The paper in the paper feed roller 230 is fed by a paper feed roller 231 and a conveyance roller 232, and is passed through the registration shutter 23.
3 will be temporarily stopped. This synchronizes the laser irradiation, the rotation of the drum 221, and the paper feed, and then the paper is sent to the drum 221 by the feed roller 234. Then, the toner image is transferred to the paper in the transfer section 240, and the toner image is fixed in the fixing section 250.

A series of operation timing controls such as paper conveyance, character formation, development, transfer, and fixing are carried out by the image memory 1 described later.
This is done via a laser printer controller 35, which will be described later, based on the data stored in 0.

Returning to FIG. 1, controller C will be explained.

The controller C mainly includes a transmission system that transmits read data from the image reading unit 110 to the partner station, a reception system that sends data received from the partner station to the laser printer 200, and an image memory that stores predetermined image data. 10, and a CPU 50 that controls the entire controller C.

The transmission system includes a league interface 21, an intermediate code 22 that converts read data into an intermediate code, an image memory 10 that stores this intermediate code, and a pixel density conversion circuit that reduces pixel density according to the functions of the partner station. 60, an MMR Coco 3, and a CCU 30 for assembling (that is, packetizing).

The above receiving system includes CCU3O for depacketization and MMR
A decoder 41, an image memory 10 for storing an intermediate code that is an output signal of the MMR decoder 41, a pixel density converting means 44 having a dot overlapping means, a decoder 45 for converting the intermediate code into a video signal, and a laser printer 200. and a laser printer controller 35 that controls the printer.

The image memory management circuit 11 performs overall management of the remaining memory capacity, writing, reading, etc. of the image memory IO.

The CPU 50 controls the entire controller C, and its control program is stored in the ROM 51, and each data necessary for executing the program is stored in the RAM 52.

When transmitting, the image memory 10 sends stored data in accordance with the transmission speed of the DDK 400 (packet switching network or circuit switching network), and when receiving, it stores one page of data and then sends the stored data to the decoder 44. send. Furthermore, when using the single image memory 10 as a retention memory, the information is stored until the multi-copy is completed.
When the image memory IO is used as a memory for broadcast transmission, the information is stored until the broadcast transmission is completed.

Next, the operation of the above embodiment will be explained.

FIG. 5 is a flowchart showing the general operation of the above embodiment.

First, turn on the start button and copy key.
o) From the value of the numeric keypad for inputting the number of copies, it is determined whether or not it is a multi-copy (520). When copying only one sheet of the original, the CPU 50 uses the image reading unit via the league interface 21. 100 and the MMR code 3 to read the original, convert it into an intermediate code, operate the address counter in the memory management circuit 11, and store the intermediate code in the image memory 10 (
321), the intermediate code is sent by a decoder, 45, to
It is converted into a video signal (image data) (S22), and the laser printer 200 is driven based on this video signal (323). In the above case, the image memory lO is used as a buffer for storing several lines. .

In case of multi-copy, set the repeat number n to RAM5.
Similarly to 531) and 521, the reading unit 10
After converting the data starting from 0, it is stored in the image memory 10. In the case of this storage, it is determined whether data for one page of the original has been stored in the image memory (333), and the signal (EOL) from the reader interface 21 that is generated each time one line of the original is read is stored for one page. Reading of one page is determined by counting or by successive occurrences of EOL, or by the management circuit 11. Then, similarly to 322 above, the memory data, which is an intermediate code, is converted into a video signal by the decoder 45 to drive the laser printer 200 (53B), and the number of repeats n is decreased by 1 (335), and these operations are repeated n times. Repeat (S37).

On the other hand, if the copy key is off, it is determined whether the send key is pressed (340).

If it is a transmission, it is determined whether or not the broadcast transmission key is pressed (341).

In the case of broadcast transmission, the destination data entered using the numeric keypad is stored in the RAM 52 (351), and by pressing the input completion key for the destination data, the data from the reading unit 100 is converted into an intermediate code. 1 image is stored in the image memory 10 (352), and when the storage of one page of the original is completed, the CCU for the first destination is
3O is set to transmit (554), and the data read from the image memory IO is transmitted via the MMR code 3.
Convert to MR code (355), send to DDX400, perform these operations for all destinations (356), in this case, each time one page of the above manuscript is sent,
Clear the destination data stored in the RAM 52 one by one.

When there is only one destination, after setting the CCU 30 to transmit, the read data is stored in the image memory 10, encoded by the Cog 23, and sent to the DDX 400.

In the case of reception (361), the CCU 3O is set to reception (562), the received data is converted to an intermediate code by the MMR decoder 41, and the intermediate code is stored in the image memory 1o (563), the original When the storage for one page is completed (S64), the intermediate code from the image memory 10 is converted into a video signal by the decoder 45.
5) Based on this video signal, the laser printer 20
Drive 0 (SSS).

The basic recording resolution of the laser printer 200 is 1
It is set at 6 pals/am x 15, 4 lines/layer 1. Therefore, if received from a normal facsimile (e.g., a facsimile with specifications of 8 pals / 7.7 lines / ■) (561 to 3
85), the pixel density conversion circuit 61 outputs the dots in duplicate. In other words, the received data is
Each dot is sent to the decoder 45 in duplicate a predetermined number of times (for example, once), and the thus-obtained data is
Each line is sent to the decoder 45 in duplicate a predetermined number of times (for example, once or twice). By doing this, even if the laser printer 200 is used, the image size on the print paper will not be reduced at the time of reception.This also applies when other plain paper high speed printers such as thermal transfer printers are used. The same is true. Also, without using the pixel density conversion circuit 61, the image data can be processed via the one-image memory management circuit 11 under the control of the CPU 50.
The reading operation of the image memory IO may be controlled in a manner similar to that described above.

FIG. 6 is a diagram showing the memory space of the image memory.

The image memory IO is one memory that is used as a storage memory area and an immediate memory area.

The storage memory area stores a predetermined intermediate code (image data) and stores it after transmission or after a predetermined time (for example, 24 hours).
It is meant to be cleared after hours). As the above-mentioned predetermined intermediate data, codes for memory transmission, polling standby one time designated transmission one time distribution, and immediate distribution can be considered. Then, in the storage memory area, a storage method is adopted in which pages are advanced for each IK document and overflow is performed, so that a plurality of documents are transmitted at once.

On the other hand, the immediate memory area is for performing simultaneous write/read operations on a predetermined intermediate code based on FIFO operation (first-in-first-out operation for storing codes). As this intermediate code, codes for copying, transmitting, and receiving can be considered.

Furthermore, when using the immediate memory area, in principle, the document reader/printer is controlled to prevent overflow from occurring.

Furthermore, the storage memory area is a variable area, the remainder of which can be used as an immediate memory area. However, since a minimum area is secured for the immediate memory area, this minimum area cannot be used as a storage memory area.

The maximum storage memory area is, for example, 1.5M.
The minimum area of the immediate memory area is, for example, 0.5 Mbytes. The total of these two, 2 Mbytes, is divided into pages 0 to 155. Therefore, the storage memory area starts from page 0 and reaches a maximum of 19 pages.
Up to 1 page can be used. Further, the immediate memory area can be used from page 0 to page 255 at the maximum, and from page 199 to page 255 at the minimum. Of course, the capacities of the storage memory area and the immediate memory area can be freely set according to the design.

Note that an incoming call allowing means may be provided that allows one incoming call while data obtained by reading a predetermined image is stored in the storage memory area.

FIG. 7 is an explanatory diagram of the storage memory area, and FIG. 8 is an explanatory diagram of the storage memory area.
12 is a flowchart when using a storage memory area.

When using the storage memory area for time-specified transmission, time-specified distribution, immediate distribution, and polling standby, do as follows.

First, set the start address SA to 0, set the jump address JA to 191, start the reader 100 (Tll), and accumulate the intermediate code of the first document (Tll).
12), I set the jump address to 191 because
This is because the maximum storage memory area is 191 pages.

In this case, when the storage memory area overflows (T13), an interlaced signal is generated, and at this time, the storage operation and the operation of the reader 100 are stopped (T14).
), if there is no overflow, it is determined whether it is the last document (T15), and if it is the last document, the page is advanced (T18), and the storage and reader are stopped (T15).
TL4).

If it is the last manuscript (if so, reset the start address SA and move up the page (71B), in the case of Fig. 7,
Since the first sheet of the manuscript ends in the middle of page 2, the start address SA is set to 3 (3 pages) and the page is advanced, while the jump address JA is left unchanged.

Then, after accumulating the intermediate code of the second document (T1
7) Reset the start address SA (716). In the case of Fig. 7, the second page of the original ends in the middle of page 4, so set the start address SA to 5 (5 pages). Move up the page.

Leave the jump address JA as it is. After repeating the above operation and completing storing the intermediate code corresponding to the end of the manuscript, move up the page. The start address SA at this time is immediately stored in the memory. This is the first page of the area.

FIG. 9 is an explanatory diagram of the immediate memory area.

FIG. 10 is a flowchart when using the immediate memory area.

First, after setting the start address SA to the first page of the immediate memory area and setting the jump address JA to 255, reception is started (011).

Then, after writing the intermediate code to the immediate memory area, the operation of reading the intermediate code is started. Based on the signal decoded by the decoder 45 from this read code, the laser printer 200, which is a page printer, prints (U12).

In this case, the safe distance is checked every time one line is received, and if the safe distance is reached (U13).

When the printer 200 is activated (U14), its safe distance is the distance from the current write address in the image memory IO to the address of the first stored data of the page on which the data of the current write address is printed. This is the distance at which the printer 200 can write received data while printing. As described above, if the printer 200- is activated when the safe distance is reached, the time from reception to completion of printing is shortened.

Then, it is determined whether or not an EOP (end of page) has been received (U15). If not, the above operation is repeated; if an EOP is received, it is determined whether or not to start the printer 200 (U16). , if the printer 200 has not been activated, the printer 200 is activated and the series of operations is completed.

On the other hand, when the current read address in the image memory IO becomes the same as the write address or becomes very close to the write address while the printer 200 is activated (this distance is determined as necessary) (U18) has E
Write the OP (U19), and when this EOP occurs, the printer 200 is stopped and prepared for the next print operation. That is, the received image is divided and output.

This prevents the printer 200 from operating abnormally.

Also, when the immediate memory area receives a reception signal of the same amount as its memory capacity, the write address reaches the jump address JA, and when it receives more reception signals, the write address starts again from the start address SA. Start. That is, the code is overwritten in the immediate memory area. Then, when the write address reaches the jump address JA, an interlaced signal is generated.

In this case, write the code to the immediate memory area and then
The printer 200 starts printing when the safe distance is reached, thereby finishing printing one sheet in response to reception. Then, when printing a second sheet in response to the same reception, the presence or absence of the interwoven signal is checked. If there is that interwoven signal,
An overflow display is displayed and the printing operation for the second sheet is stopped. This ensures the printing of the first sheet and prevents the second and subsequent sheets from being printed incompletely.

In the above embodiment, a facsimile using DDK has been described, but other dedicated lines or public lines may also be used. In this case, in FIG. Coco or MR
MH intermediate decoder or MR intermediate decoder is used instead of MMR decoder 41, and CCU3
Instead of O, an NCU and a modem may be used.

[Effects of the Invention] According to the present invention, when the information of one page of the received document is larger than the capacity of the image memory, it is possible to reliably print the document J:.

When the multi-copy mode is adopted, there is an effect that an incomplete second sheet is not printed.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention. FIG. 2 is a perspective view showing an example of an image reading section. FIG. 3 is a diagram showing an example of an operation panel. FIG. 4 is a longitudinal sectional view showing an example of a laser printer. FIG. 5 is a flowchart showing the general operation of the above embodiment. FIG. 6 is a diagram showing the memory space of the image memory. FIG. 7 is an explanatory diagram of the storage memory area. FIG. 8 is a flowchart when using the storage memory area. FIG. 9 is an explanatory diagram of the immediate memory area. FIG. 10 is a flowchart when using the immediate memory area. C... Controller. lO... Image memory. 11... Image memory management circuit, 23...
・MMR Koko 30...CCU. 35... Laser printer controller, 41.
...MMR decoder 44.60...Pixel density conversion circuit, 45...
...Decoder, 50...CPU. 100... Image reading unit, 200... Laser printer. Figure 1 Figure 2 Figure 8

Claims (2)

[Claims] (1) In the multi-copy mode, before the end of data writing to the image memory, the data is read and printed, and when data exceeding a predetermined capacity is sent to the image memory, overwriting the image memory; A facsimile machine that prints according to the data and stops printing the second page. (2) The facsimile machine according to claim 1, wherein an overflow display is performed when data exceeding the predetermined capacity is sent to the image memory.