JPS61123267A - Facsimile - Google Patents

Abstract

PURPOSE:To improve the resolution, to quicken the print speed and to save memories by using a picture memory storing reception data also as the content of transmission at multiple address transmission. CONSTITUTION:When a copy key is turned off and a multiple address transmis sion key is depressed, destination data inputted from a ten-key is stored in an RAM 52. Then the data from a read section 100 is converted into an interme diate code by depressing an input end key of the destination data and stored in a picture memory 10. When the storage for one page's share of an original is finished, the transmission of an MODEM 30 and an NCU 31 is set for the 1st destination, the data read from the picture memory 10 is converted into an MH code or an MR code and transmitted to a line 400. The operation above is executed for all destinations. The picture memory 10 is used to store temporar ily the received data inputted from the line 400.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to facsimiles that use subscriber telephone lines.

[Prior Art] A facsimile machine generally has a pickup system that optically reads the contents of a document to be transmitted and converts it into an electrical signal, a recording system that makes a hard copy to a printer or the like based on the received signal, and the above-mentioned reading system. It is composed of the recording system described above and a controller that controls the recording system.

Conventionally, facsimile recording systems that use subscriber telephone lines include those that have a thermal printer that uses thermal paper and those that have a printer that uses plain paper.

Although the thermal printer has the advantage of high resolution, it has the disadvantage of slow printing speed. On the other hand, printers using plain paper are the opposite of the above-mentioned thermal printers, and have the characteristics of high printing speed but low resolution.

In this way, facsimiles using subscriber telephones have high resolution and sufficiently fast printing speeds.
t'i! i does not currently exist.

To improve print speed, increase the resolution.
In addition to using a laser printer, a receiving memory for storing received data is provided, and when a predetermined amount of data (for example, data for one page) is stored in the receiving memory,
It is conceivable to send the data to the laser printer.

In addition, in the facsimile mentioned above, the same data as the image read data can be read in one operation.

It is conceivable to add a broadcast transmission function to send to multiple other facsimile machines. In this case, a dedicated memory (broadcast transmission memory) for storing the read data is required.

Therefore, in the above case, a reception memory and a broadcast transmission memory are required.

[Object of the Invention] The present invention has been made in view of the above circumstances, and relates to a facsimile machine that uses a subscriber telephone.

It is an object of the present invention to provide a facsimile machine that has sufficiently high resolution, sufficiently high printing speed, and saves memory.

[Embodiment 1 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, 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, one 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.

3rd r! 4 is a diagram showing an operation panel.

The operation panel 130 is used to select standard mode or fine mode, specify mini fax or halftone, dial the other party's station, and perform other functions.

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

The laser printer 200 includes an exposure device 7210, a developing unit 220, a paper feed cassette 230, a transfer section 240, a fixing section 250, and a stacker section 260. The exposure apparatus [210 has a laser unit 2 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, and the drum 22 is
This is to visualize the WI image formed on 1.

The paper in the paper feed cassette 230 is transferred to the paper feed roller 231.1.
112 is sent by a feed roller 232 and temporarily stopped by a registration shutter 233. 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 transfer section 240
The toner image is transferred to the paper at the fixing section 250, and the toner image is fixed at the fixing section 250.

A series of operation timing controls such as paper conveyance, character formation, development, transfer, and fixing are performed via the laser printer controller 35 (described later) based on data stored in the image memory 10 described above. It will be done.

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. IO and a CPU 50 that controls the entire controller C.

The first transmission system includes a reader interface 21, a φ coder 22 that converts read data into an intermediate code, an image memory IQ that stores this intermediate code, and a pixel that reduces the density of one pixel according to the function of the other station. It is comprised of a density conversion circuit 60, a selector 23 for selecting the MH doubler 24 or the MR coder 25, a modem 30 for modulating a transmission signal, and an NCU 31 for performing line control.

The receiving system includes an NCU 31, a modem 30 that demodulates the received signal, and an MH intermediate decoder 41.

An MR intermediate decoder 42, a multiplexer 43, an image memory 10 for storing the intermediate code passed through the multiplexer, a g-density conversion means 61 having dot duplication means, and a decoder 44 for converting the intermediate code into a video signal. and a laser prelifter controller 35 that controls the laser printer 200.

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.

The image memory IO sends out stored data in accordance with the transmission speed of the line 400 when transmitting, and when receiving, stores one page's worth of data and then sends the stored data to the decoder 44. Furthermore, when using the one-image memory 10 as a retention memory, until the multi-copy is completed,
When storing this information and using the image imori lO as a memory for broadcast transmission, the information is stored until the broadcast transmission is completed. In addition.

Reference numeral 300 is a telephone.

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

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

First, turn on the start button and copy key.
), From the value of the numeric keypad for inputting the number of copies, it is determined whether it is multi-copy or not (320). When copying only one sheet of the original, the CPU 50 selects the reader 4 y 9
7! - Drives the image reading unit loo and the intermediate code 22 via the The intermediate code is stored in the decoder 44 (521).
is converted into a video signal (image data) by (52
2) Based on this video signal, the laser printer 20
0 is driven (S23), in the above case 1 image memory 1
0 is used as a buffer to store several tins.

In the case of multi-copy, the number of repeats n is stored in RAM.
52 (S31), similar to 521, the reading unit 1
After converting the data starting from 00, the data is stored in the IIim memory 10. In the case of this storage, the reader interface 2 determines whether data for one page of the original has been stored in the image memory (533), which occurs every time one line of the original is read.
Reading of one page is determined by counting the signal (EO1) from No. 1 for one page, by successive occurrences of EOL, or by the management circuit 11. Then, similarly to 322 above, the memory data, which is a medium 1ull code, is converted into a video signal by the decoder 44, and the laser printer 200 is driven 53B), the repeat number n is decreased by 1 535), and these operations n
Repeat times (537).

On the other hand, if the copy key is off, it is determined whether the send key is pressed ($40), and if it is sending, it is determined whether the 1 broadcast transmission key is pressed. (541).

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. Later, the original is stored in the image memory lO (552)! When the storage of pages is completed, the modem 30 and NCU 31 (F) transmit set L for the first destination (S54).

The data read from the iIj image memo IJIO is converted into an MH code or MR code (S55) via the MH coder 24 or the MR coder, and one line 40
0. These operations are executed for all destinations (S56). In this case, each time one page of the original document is transmitted, the destination data stored in the RAM 52 is cleared one by one.

If there is one destination, after setting the modem 30 and NCU 31 to transmission mode, the read data is stored in the image memory 10, encoded with code 24.25, and sent to one line 400; , for reception (56
1) includes a modem 30. Set the NCU 31 to reception (S 62), convert the received data to an intermediate code by the MH intermediate decoder 41 or MR intermediate decoder 4z, and store the intermediate code in the image memory 10 (563), completing the storage of one page of the original. When (564), part ii
The intermediate code from the image memory 1O is converted into a video signal by the decoder 44 (565), and based on this video @ number,
The laser printer 200 is driven (366).

The basic recording resolution of the laser printer 200 is
l 6 psls/sm X l 5, 4 lines/a
sk: Set. Therefore, when received from a normal facsimile (for example, a facsimile with specifications of 8 pets/ls x 7, 7 lines/1 set) (in the case of 561-565), the pixel density conversion circuit 61 doubles the dots. and output it. In other words, the received data is transmitted a predetermined number of times (for example, once) for each dot.
In addition to sending the data to the decoder 44 in duplicate, the data is sent a predetermined number of times (for example, once, once,
or twice) to the decoder 44 in duplicate. By doing this, the laser printer 20
Even if 0 is used, the image size on the print paper will not be reduced upon reception, and this is also true when other plain paper high speed printers such as thermal transfer printers are used. Also, without using the 1 pixel density conversion circuit 61,
Under the control of the CPU 50, one image memory 1 is stored via the image memory management circuit 11 in the same manner as above.
The read operation of 0 may also be controlled.

[Effects of the Invention] The present invention provides facsimiles that use subscriber telephones,
This has the effect of making the resolution sufficiently high, making the printing speed sufficiently high, and saving memory.

[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. ptS4 is a longitudinal sectional view showing an example of a laser printer. FIG. 5 is a flowchart showing the operation of the above embodiment. C... Controller, 'l O... Image memory, 11... Image memory management circuit, 22
...Intermediate code 130 ...Modem, 35
...Laser printer controller, 44...
...Decoder, 50...CPU, 60.61
...Pixel density conversion circuit. 100... Image reading section, 200...
laser printer. Representative Patent Attorney Arata Yokubo - Figure 1 Procedure Amendment (No) April 15, 1985

Claims (2)

[Claims] (1) For facsimiles that use subscriber telephone lines,
A facsimile machine having a laser printer in its recording system and having an image memory for storing received data also used as a broadcast transmission memory for storing transmission contents at the time of broadcast transmission. (2) The facsimile according to claim 1, wherein the facsimile has at least one mode of CCITTGIII, GII, or mini-fax mode.