JPS6364939B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording device capable of facsimile transmission, reception, and copying.

[Prior Art] Conventionally, facsimile devices have been unable to transmit large amounts of information at high speed due to limitations such as the frequency band of a transmission path. For this reason, if the resolution of the image is increased, a clear image can be obtained on the receiving side, but on the other hand, there is a problem in that the amount of image information to be transmitted increases and the transmission time becomes longer. Furthermore, depending on the function of the receiving side, it may not be possible to transmit at high resolution.

On the other hand, when this facsimile device is used as a copying machine, the transmission time is not an issue, so a clearer image can be obtained by increasing the resolution of the image.

Therefore, as shown in Japanese Patent Application Laid-Open No. 52-36905, when performing facsimile transmission, the original is read and scanned at a low resolution, and when copying the original, on the other hand, the original is read and scanned at a high resolution. It has been known.

However, if the resolution of reading and scanning a document is simply made different between facsimile communication and copying as described above, clear images cannot be obtained in facsimile communication. Another drawback is that the structure of the facsimile device becomes complicated for copying originals.

[Objective] The present invention eliminates the above drawbacks,
It is an object of the present invention to provide a recording device capable of obtaining clear images not only in original copying but also in facsimile communication.

The present invention will be specifically described below with reference to the drawings.

FIG. 1 is a schematic diagram illustrating the configuration of a copying and recording apparatus according to an embodiment of the present invention.

The copying/recording device FCP shown in FIG. It is composed of an image recording section W for writing on the image recording section W.

At the top of the reading section R, there is a document table made of glass, etc.
A GD is formed, and a document to be copied is placed on this document table GD. At the bottom of the document table GD are bar-shaped light sources L1, L such as fluorescent lights that illuminate the document.
2. Reflecting mirrors M1 and M2 provided so that the light emitted from the light sources L1 and L2 effectively illuminates the surface of the document placed on the document table GD, and a first plane mirror that scans (sub-scans) the document. PM1, second plane mirror PM
2. Optical lens OPL that forms a light image of the document surface;
A self-scanning light-receiving element RH is provided, which includes a large number of light-receiving elements arranged in a straight line. Light source L1, L
2.Reflector RM1, RM2 and first plane mirror PM
1 is integrated by a support ST and fixed to a carriage CA1. The carriage CA1 moves forward on the guide rail GL from left to right (direction F) in the figure and back from right to left.

The second plane mirror PM2 is moved in the same direction as the first plane mirror PM1 at a speed of 1/2 of the moving speed of the first plane mirror PM1 by the guide rail GL by the carriage CA2.
move above. In other words, during forward scanning, the plane mirror PM
1, PM2 is the position PM1', PM indicated by the dotted line in the figure
Move to 2'. At this time, the plane mirror is removed from the document table GD.
The optical path length through PM1 and PM2 to the lens OPL is always kept constant.

The main scanning direction of the light receiving element RH is perpendicular to the drawing, and if the signals from the light receiving elements of the light receiving element RH are read out in order while the plane mirrors PM1 and PM2 are moving, the document surface is raster scanned from the light receiving element RH. Sequential signals can be obtained.

The light receiving element RH is used for CTD (Charge Transfer) such as self-scanning one-dimensional CCD (Charge Coupled Device) image sensor, one-dimensional BBD (Bucket Brigade Device) image sensor, etc.
(Device) image sensor, consisting of a thin film one-dimensional image sensor whose light-receiving part is made of amorphous silicon, or a chalcogen-based one-dimensional image sensor whose light-receiving part is made of Se-Te.

The reading section R shown in Fig. 1 has a movable plane mirror PM.
1. Detectors S1 and S2 are installed at respective positions to detect the home position and return position of PM2, and the light incident on each detector S1 and S2 is caused by the carriage CA of the first plane mirror PM1.
ON-OFF by the light shielding means KV attached to 1.
be done. For example, photo switches are used as the detectors S1 and S2.

In the recording unit W of the copying and recording device FCP shown in FIG. Recording paper in cassette PK and paper feed cassette PK
Feeding roller for feeding SP in the direction of the conveyance path
CR, roll paper LP, cutter KT for cutting roll paper LP to specified length, roller for feeding roll paper LP
FR, its holding roller PR, and the recording paper to the recording head.
Guide plates GB1 and GB2 that lead to the WH, timing roller TR that synchronizes during recording, recording head WH,
Holding plate PL, paper ejection roller OR, guide claw GT for selecting the recording paper ejection direction, No. 1 for storing copy recording paper
A second paper discharge tray T1 for storing facsimile reception recording paper, etc. are provided.

To explain the operation of the recording section W, the feeding roller CR
Sheet paper SP or feed roller conveyed by
The roll paper LP transported by the FR is timed to start recording by the timing roller TR, and then transported to the recording head WH. The recording head is, for example, a full inkjet head, in which a large number of inkjet nozzles are arranged in a direction perpendicular to the drawing of FIG. The inkjet head records on the recording paper by ejecting droplets from the top to the bottom in the figure, according to the information read by the reading section R or the information transmitted from the outside via the communication line. . When the right tip of the guide pawl GT is facing upwards (solid line in Figure 1), that is, in facsimile mode, the paper that has been recorded is placed in the second paper output tray T2, and the right tip of the guide pawl GT is facing the bottom. When the sheet is facing forward (dotted line GT' in FIG. 1), that is, when in copy mode, the sheet is discharged to the first discharge tray T1.

In the inkjet recording head WH, for example, a resistor is energized, the heat generated by the resistor generates bubbles in the ink, and the energy generated by the bubbles causes the ink to be ejected from an orifice. This head uses a so-called thermal inkjet method.

This recording head WH is made up of a groove plate block, a groove cover block, and a common liquid chamber block, each of which has one end attached to the apparatus body and has a number of grooves provided on a supporting member, in order to be firmly installed at a predetermined position in the apparatus body. By arranging these, a common liquid chamber communicating with a large number of orifices is formed, and a coupling pipe is connected to both ends of the common liquid chamber. Ink supplied to the common liquid chamber flows into the common liquid chamber through a viscoelastic supply pipe connected to an ink storage tank. In addition, other thermosensitive records, laser records, electrolytic records,
Various methods such as discharge recording can be used, and various reading and writing methods such as serial, parallel, and a mixture thereof are possible, but an example of a thermal inkjet full multihead will be explained below.

FIG. 2 is a block diagram schematically showing the control system of this embodiment.

One of the features of this embodiment is that it reads the image information of a document, performs a copy function using inkjet recording, transmits the image information read from the document to a remote location by facsimile over a telephone line, and receives the image information transmitted from the remote location. It has a facsimile function. In the case of copy mode in Figure 2,
The image information read by the reading section R equipped with a self-scanning light receiving element RH such as a CCD in Fig. 1 is sent to a data processing section PS consisting of a shift register circuit SR and a buffer circuit BC that convert serial data into parallel data. The data is copied and recorded in the recording section W via the recording section W.

On the other hand, in the case of facsimile transmission mode, the information read by the reading section R is sent to the buffer circuit BF1,
After being encoded and band-compressed by the data compression unit DA, which consists of an encoder EC and a buffer circuit BF2,
Modem MDM and network control
It is modulated by the transmission control section TC, which consists of a unit NCU, and is transmitted from the terminal IT to the telephone line TEL. A telephone TEL is also connected to the NCU.

In addition, in the case of facsimile reception mode, the signal from the telephone line TEL is demodulated by the transmission control unit TC via the terminal IT, and then sent to the OR gate 01, buffer circuit BF3, decoder DC, and buffer circuit BF.
The received data is decoded by the data restoration unit DF consisting of 4, and is received and recorded by the recording unit W.

Note that the communication method in the facsimile mode of the present invention is not particularly limited.

In Fig. 2, the operation of each part is explained by the control section.
Controlled by MPU.

In the apparatus of this embodiment, when neither copying nor facsimile transmission is being performed, the control unit MPU of the apparatus main body controls the copy start switch SC (single copy) or MC (multi-copy) on the console panel KB provided on the main body. ) is turned on, the fax sending switch is turned on, and faxes are being received. Generally, the power is always turned on because it is unknown when facsimile reception will occur. Further, the guide pawl GT shown in FIG. 1 is always directed upward by a spring S, so that the facsimile reception recording paper is stored in the tray T2. If the copy start switch SC or MC is pressed, the device enters copy mode and copies are made. That is, in Fig. 2, when copying starts, the copy counter CC, which reads the number of copies specified by the copy number designation keys 0 to 9 on the console panel KB in advance and stores the number, receives an end signal E that is generated every time copying is completed. The value in counter CC becomes 1.
The decoder DD and the control unit MPU check whether the copy counter has reached zero (that is, whether the number of copies set in the copy number designation key has been completed). The contents of the decoder DD are displayed on the numerical display NDP. Also decoder DD
The contents of are sensed at the sense timing from the MPU, and if the contents are not zero, the AND gate A1 is opened, the flip-flop F1 is set, and the set output signal C is used to control the feed roller CR.
, and open the AND gate A2 to open the buffer.
The contents of BC are sent to the recording section W, and the solenoid
Turn on the SL and direct the guide claw GT downward so that the copy recording paper is stored in the tray T1. When one copy has been recorded, flip-flop F1 is reset by end signal E, solenoid SL is turned off, and guide pawl GT is directed upward to return to facsimile reception mode. Counter in multi-copy mode
If the contents of CC have not yet become zero, F1 is set again at the next sense timing, the copy mode is set again, the document reading operation is repeated, and the copy recording paper is accumulated on tray T1. When the specified number of copies have been completed, the flip-flop F1 is reset by the end signal E in the same manner as described above.
Turn on the solenoid SL and point the guide claw GT upward to enter the facsimile reception system.

On the other hand, when using this device as a facsimile transmitter, place the original to be transmitted on the document table GD and turn on the facsimile transmission switch FAX. As a result, the transmitted original is subjected to encoding, band compression, modulation, etc. as described above, and then transmitted to the telephone line. When the transmission is completed, it returns to the standby state again. During transmission, the transmission lamp L4 in FIG. 1 lights up. Second
In the figure, flip-flop F1 is reset except during copying (during facsimile transmission, facsimile reception is not performed because the transmission system using a single telephone line is blocked), and facsimile reception is performed immediately; Flip-flop F1 is set, and when copying is completed, F1 is reset and facsimile reception processing is performed immediately. That is, and gate A
3 is opened and the output A0 drives the feed roller FR to convey the roll paper LP. When the reception of the facsimile is completed, the end signal E is sent to the recording section W as described above.
At this time, the facsimile reception signal is inverted by inverter i1 and sent to AND gate A.
4 is closed, so no subtraction instruction is input to the copy counter CC. Next, it is checked again whether the copy counter CC is zero, and if it is not zero, the AND gate A1 is opened and F1 is set again, and the copy mode is resumed. Therefore, even if facsimile reception is performed during multi-copy operation, multi-copy is automatically performed again after reception is completed. In either single copy or multi copy, each time recording of one sheet is completed, flip-flop F1 is reset, set to facsimile reception mode, and stands by.

In the case of a copy operation, the flip-flop F1 is set as described above, and the set output drives the feed roller CR to transport the sheet paper SP stored in the paper feed cassette PK to the recording head WH, and the facsimile operation is performed. and gate A if
The feed roller FR is driven by the output A0 of No. 3, and the roll paper LP is conveyed to the recording head WH. This is because the receiving side generally does not know the length (size) of the document sent to the facsimile in advance, or if the A4-width sheet paper normally used for facsimile is stored in the paper cassette PK. This is due to the fact that there are no restrictions on the It is also possible to use roll paper LP in the copy mode, and in that case, if the roll paper use key LC is used, the flip-flop F1 is not set, the feed roller FR is driven, and the tray T2 is used.

On the other hand, the recording paper after recording is stored in the first paper output tray T1 in the case of the copy mode and in the second paper discharge tray T2 in the case of the facsimile reception mode by the operation of the guide claw GT. . By separating the paper ejection trays according to the mode, for example, facsimile recording paper received during multi-copying can be reliably taken out. In addition, the lamp L3 and phototransistor PT in Figure 1 detect that a sheet has been ejected to the tray T2, and the reception display L5, which is made of an electrochromic element, records and displays the information, so that when the user notices it, the sheet can be removed from the tray T2. , L
Just delete 5. This is useful for transmission systems that do not require telephone calls and responses, such as dedicated line systems and data transmission within high-rise buildings, and eliminates the need for mail transport services and transport pipes. Furthermore, by using a bidirectional data transmission line in this manner, it is also possible to receive data from the other party at the same time that data is being transmitted to the other party. In this case, the terminal IT shown in FIG. 2 is provided with a terminal section capable of simultaneous transmission and reception. It is also possible to perform simultaneous processing with other parties other than a specific party. That is, for example, now the other party A
While the information from the user is being recorded in the recording unit W, the document on the document table GD can be sent to the other party B.

FIG. 3 is a detailed diagram of the reading section R shown in FIG. 2, in which a linear image sensor CCD, for example, is used as a self-scanning light receiving element for reading image information. A sensor having 2500 bits of light receiving pixels as a linear image sensor CCD is arranged in a straight line in the direction perpendicular to the drawing in FIG. This CCD sensor is
The main scanning direction of the original (vertical direction in Figure 1) is read, and a linear image sensor is used by the lens system.
The original image is formed on the CCD. If the width of the document table GD is 210 mm in the short direction of A4 paper, the reading pixel density in the main scanning direction is approximately 12 bits/mm (hereinafter referred to as pel).
When in the facsimile transmission mode, the pixel density is converted to a 6-pel pixel density reading as described later.

In addition, the clock that drives the linear sensor CCD is generated by the clock circuit CL, but the CCD
The frequency of the reset pulse (video frequency) for extracting the video signal is, for example, in copy mode, by opening AND gate A and applying approximately 2 MHz.
Send key in case of facsimile sending mode
Turn on the fax and open the AND gate A6 to approx.
Apply 500KHz and scan the CCD with clock pulses according to the mode.

The output of the linear image sensor CCD is amplified by a video amplifier VA and digitized by a binarization circuit AD consisting of an analog comparator. In the case of copy mode, the binarized data is sent to the data processing unit DS via AND gate A8.
In the case of facsimile transmission mode, the arithmetic circuit DV,
It is transmitted to the data compression unit DA via the AND gate A7. The arithmetic circuit DV is a circuit that performs arithmetic operations to convert pixel density information corresponding to 12 pels read by the CCD into 6 pels. The simplest example of this calculation method is a method in which every other bit is sampled, and there is also a method in which, for example, a logical sum (OR) of two consecutive bits is taken and converted into one bit. Therefore, the video signal sent from the arithmetic circuit DV to the data compression section DA is substantially approximately 250 KHz.

Optical system during document reading (Figure 1 CA1,
The moving speed of the CA2, etc.) is determined by the pixel density in the sub-scanning direction of the document. For example, if the pixel density in the sub-scanning direction is 12 pels in copy mode and 3.85 pels in facsimile transmission mode, The sub-scanning speed in copy mode is approximately 70
mm/sec, approximately 1.5 in facsimile transmission mode
mm/sec. However, this scanning speed becomes faster when band compression techniques are used in facsimile transmission mode.

In this way, since the scanning speed varies depending on the mode, the motors (not shown) that drive the carriages CA1 and CA2 in Fig. 1 have switching means depending on the mode, especially when performing band compression in the facsimile transmission mode. etc., the carriage is driven intermittently by a stepping motor.

Furthermore, the CCD accumulation time (scanning time) per line is significantly different between the two modes.
The amount of light incident on the CCD must be adjusted.
For example, in the case of facsimile transmission mode, there are methods such as lowering the brightness of the rod-shaped light sources L1 and L2, or inserting an ND filter into the optical path. Further, in the above example, main scanning is set in the lateral direction of the document and matched with facsimile transmission/reception, but conversely, main scanning may be set in the longitudinal direction of the document.

FIG. 4 is a block diagram showing an example of the configuration of the recording section W shown in FIG. 2.

The recording unit W includes a latch circuit that latches the serial data read by the reading unit R during the copy mode and converts it into parallel data into, for example, 32 bits in the register SR of the data processing unit DS in the buffer BC.
LB is provided.

Also, when receiving a facsimile, the data restoration unit DF
An arithmetic circuit DM is provided for arranging the data sent by every other bit. Arithmetic circuit
DM is the inverse operation of sampling every other bit in the arithmetic circuit DV of the reading section R on the sending side, which is equipped with a device similar to this device.
In the case of 12 pels, if the data in the main scanning direction of 6 pels that are electronically transmitted is recorded as is, it will be enlarged twice in order to prevent the recording from being reduced to 1/2 in the main scanning direction. be. For example, a method of arranging data every other bit and setting the bits in between to zero (low level), or a method of converting the same bit to 2 bits (0 → 0.0,
1→1.1) etc. The data arranged in double bits in this way is transferred to the shift register circuit SRT.
In the same way as in the copy mode, the data is converted into parallel data into, for example, 32 bits and output.

The selection circuit PSC is a latch circuit in copy mode.
This circuit selects the data in LB and, in the facsimile reception mode, the data in the shift register circuit SRT, and is controlled by the drive control circuit DDC. selection circuit
The data selected by the PSC is sent to the drive circuit PID, such as a full multi-ink jet head.
IJH records on recording paper LP or SP using a dynamic time division drive method.

The conveyance speed of the recording paper during recording is approximately 70 mm/sec in copy mode and approximately 1.5 mm/sec in facsimile reception mode, similar to the reading section.
If band compression is used, it will be even faster. This speed control is performed by the timing roller TR shown in FIG. Correspondingly, the drive timing of sequential digit drive scanning signals D1 to Dn of the ink jet head IJH and pixel signals P1 to P32 for selecting the nozzles of the ink jet head are controlled. For example, in the copy mode, the scanning period of all the full multi-nozzles is about 1.2 ms, in the facsimile reception mode, it is about 7 ms, and the driving time of each nozzle is set to about 10 μs.

This device also overlays the original image information and facsimile reception information and edits the image information into one image.
It is also possible to record on a sheet of recording paper. At this time, turn on the edit key ED shown in FIG. As a result, the AND gate A10 in FIG. 2 opens, and the reading section R
The original information from is applied to the OR gate 01 via the data compression unit DA. Also, when in this mode, the facsimile transmission key FAX is also turned on. As a result, the AND gate A6 in FIG. 3 is opened, and as described above, the document reading becomes the facsimile transmission mode, and it becomes possible to overlay the facsimile reception information. Further, even if the facsimile transmission key FAX is turned on, the control unit MPU and the transmission control unit TC detect that the edit key ED is turned on before that, and no facsimile transmission is performed. Alternatively, even if the FAX key is turned on based on the facsimile reception information, facsimile transmission is automatically prohibited. In this way, the edited information in which the original information read in the facsimile transmission mode and the facsimile reception information are overlaid can be used, for example, when recording data on image information, such as recording local data for weather forecasts (such as a map of Japan as a manuscript). This is extremely desirable since it can significantly reduce the amount of transmission over expensive communication lines.

Further, reduced copying and enlarged copying can be performed using at least part of the facsimile transmission/reception mechanism.
That is, as mentioned above, when in facsimile transmission mode, 12 pel read data is reduced to 6 pels in DV, and in facsimile reception mode, 6 pels are expanded to 12 pels in DM, so this calculation circuit
By using DV and DM, it is possible to perform 1/2 reduction copy and 2x enlargement copy in copy mode. In other words, in the case of 1/2 reduction, as below
The data read with 12 pels is reduced and converted with DV, and 12
Reduction recording is performed using half of the full line of the recording head with a pixel density of pels.

On the other hand, in the case of double enlargement, the original is read at a dot density of 12 pels as shown below, the data is enlarged and converted by DM, and the entire full line of the 12 pel recording head is used to enlarge and record.

Now, in order to perform a reduction copy, turn on the reduction copy mode set key RD shown in FIG. 2. Next, turn on the copy command key SC or MC. As a result, the data read in 12 pels by the reading section R is the AND gate A9 in Figure 3 and the AND gate A1 in Figure 2.
1 and is stored in the shift register SR. The shift pulse of this shift register SR has half the frequency of the copy mode. The data stored in the buffer BC is transferred from the register SR to the latch circuit LB shown in FIG. 4, and the drive circuit PID performs recording reduced to 1/2 on the recording paper LP. Here, even if the copy command key SC or MC is turned on, since the reduction key RD is turned on before that, the flip-flop F1 is not set and the data is recorded on the roll paper LP in the same way as in the facsimile reception mode.

Also, the conveyance speed of the recording paper is determined by the timing roller TR.
doubles the copy mode. Also, to reduce the facsimile reception information to 1/2, use the data restoration section.
Information from DF is transferred to shift register SRT without passing through DM in Figure 4, which is 1/2 of the time in facsimile reception mode.
paper at twice the speed.

Next, to make an enlarged copy using an original whose size is smaller than the width of recording paper LP, turn on the enlarged copy mode set key and press the copy command key SC.
Or, when MC is turned on, AND gate A in Figure 3
8 is opened, AND gate A12 of FIG. 2 is also opened, and 12 pel data is applied to the arithmetic circuit DM of FIG. This 12-pel data is doubled by the arithmetic circuit DM, and when 32 bits are stored in the shift register SRT by a shift pulse having twice the frequency as in the copy mode, it is sent to the drive circuit PID by the selection circuit PSC. This 32-bit information is obtained by increasing each bit of the 16-bit information by one, and is thereby enlarged and recorded. Also recording paper
The LP transport speed is set to 1/2 of the copy mode speed using the timing roller TR.

In addition, in order to double the facsimile reception information and record it, it is passed through the arithmetic circuit DM twice and stored in the shift register SRT.
Just store it at twice the frequency. All of these are performed by the control unit MPU using the same gate processing as before.

In both the reduction and enlargement modes mentioned above,
The clock frequency for reading and scanning the CCD, and the frequencies of the image signal and scanning signal for time-division driving of the recording head IJH are set to be the same as in the copy mode and facsimile reception mode.

Similarly, the reading scanning carriage CA shown in Fig. 1
1. The scanning speed of CA2 is also set to be the same as the normal copy mode for both reduction and enlargement, but here, instead of changing the conveyance speed of the recording paper as the reduction and enlargement method in the sub-scanning direction, the above-mentioned facsimile transmission mode is used. This can also be done by changing the scanning speed of the above-mentioned carriage, as in copy mode.

Also, if you use the above-mentioned DV and DM multiple times, 1/4,
It is also clear that various possibilities such as 1/8, 4 times, 8 times, etc. are possible.

Furthermore, even if it is necessary to make an urgent copy while receiving a facsimile, this device can perform this interrupt copy. This is particularly useful when a large number of original documents are being sent one after another from the sending side, since the facsimile mode is occupied for a considerable period of time.

That is, even if the machine is currently operating in the facsimile reception mode, place the original on the original platen GD and turn on the copy command SC or MC. As a result, the transmission control unit TC detects the aforementioned signal E indicating that the current facsimile reception record has been completed, and transfers the subsequent transmission data to the magnetic valve memory BM1 without applying it to the OR gate 01, and temporarily stores it. let Further, by setting the flip-flop F1, one or more interrupt copies can be obtained by operating the same copy mode as described above. copy counter
When the transmission control unit TC detects the end signal E when the contents of CC become 0, the memory
The transmission data temporarily saved in BM1 is sent to OR Gate 01, and the facsimile reception mode is automatically restarted. From now on, you can continue to use memory BM1, or switch to the modem at an appropriate time.
You can also switch to MDM output. Also memory BM
By storing one page of the original on the sending side in 1 and sending it out repeatedly to the OR gate 01 even after the transmission is completed, a large number of records of facsimile reception information can be obtained. In order to do this, it is sufficient to provide a key to give the command to the MPU or include it in the facsimile transmission information, and since it is accumulated in the above-mentioned dedicated tray, it is not mixed with the recording paper in the copy mode.

Also, when making multiple copies of document information, the document 1 is stored in the magnetic valve memory BM2 shown in Figure 2.
It is preferable to memorize all the information on a document and repeatedly output the contents so that the document can be brought back to the desk and used, and the device can continue to make copies of a large number of pages during that time.

At that time, the command signal MM from KB and MPU
Opens AND gate A13 and sends BM to OR gate 03 the number of times corresponding to the number of multi-copy sheets.
It is sufficient to repeatedly apply the contents of 2.

At this time, it is also possible to transmit the contents of the memory BM2 to the other party. At this time, it is sufficient to open the AND gate A14 in FIG. 3 using the signal MF from the MPU, read out the contents of the memory BM2 at a frequency of 500 KHz, and apply it to the OR gate 05.

[Effects] According to the present invention, image information received at a low resolution is converted into image information at a high resolution, so the resolution of images in facsimile communication can be made apparently high, and it is possible to record images at a low resolution. A clearer image can be obtained compared to . Furthermore, a clear image can be obtained when copying an original, and the configuration for reading and scanning the original can be simplified.

[Brief explanation of drawings]

FIG. 1 is a schematic explanatory diagram of an apparatus according to an embodiment of the present invention, FIG. 2 is a control block diagram thereof, FIG. 3 is a detailed example of its reading section, and FIG. 4 is a detailed example of its recording section. It is. KB...Panel, R...Reading section, W...Recording section, T
1, T2...tray, LP, SP...recording paper, A1-A
14...AND gate, 01-05...OR gate,
MPU...control unit.

Claims (1)

[Scope of Claims] 1. A reading means for reading a document; a first conversion means for converting the pixel density of the image information read by the reading means from high density to low density; A transmitting means for transmitting image information, a receiving means for receiving image information, a second converting means for converting the pixel density of the received image information from low density to high density, and an image converted by the second converting means. It has a recording means for recording information, and a means for causing the recording means to record image information from the reading means, and when making a same size copy of an original, the first converting means and the second converting means convert pixels into pixels. A recording device characterized in that the image information read by the reading means is recorded by the recording means without performing density conversion.