JPH0145170Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording device having a double copying function used in facsimile machines and the like.

Some recent facsimile machines are equipped with a copying function in addition to the sending and receiving functions, and some have already been proposed that are equipped with a reduction copying function.

However, since the copying operation of this type of facsimile machine is performed by applying the image signal derived from the reader to the recorder, it has the disadvantage that only one copy can be made in one operation. It was hot.

Therefore, the present invention proposes a recording device that can simultaneously make two copies of a small original.

Hereinafter, an example in which the recording device of the present invention is applied to a facsimile device will be explained. The drawing is a block diagram showing a schematic configuration thereof.

In the drawing, 1 is a reader consisting of a CCD or the like having the number of pixels for one line or more, and 2 is for writing and reading out image signals for each line derived from this reader into a transmission memory 3. 4 is an encoding circuit for compressing and encoding the image signal read out from the transmission memory;
5 is a modulation/demodulation circuit that modulates the encoded signal and demodulates the received signal.

On the other hand, 6 is a decoding circuit that decodes the encoded signal derived from the modulation/demodulation circuit 5, 7 is a receiving memory circuit in which the decoded image signal is sequentially written one line at a time, and 8 is a memory circuit for reading from there. 9 is a recorder consisting of a thermal head or the like having the same number of elements as the reader; 10 and 11 are for transporting the original and the recording paper by one line each in the sub-scanning direction. a document conveyance circuit and a recording paper conveyance circuit; 12 represents each of the circuits 2;
This is a control circuit consisting of a microprocessor, etc., which controls the operations of 3, 4, 6, 7, 10, and 11.

Here, for example, if the recorder is of B4 size, the address control circuit 2 stores each bit of the image signal for each line from the reader 1 into a memory for transmission when copying a B6 size original. Two paired addresses of circuit 3, i.e. address i and (1024+i) address (i=
0, 1, 2,...). Further, both of the memory circuits 3 and 7 are composed of two line memories each having a bit capacity for at least one line of the image signal derived from the reader 1, and when one of the line memories is in a writing state, the other one is in a writing state. It is configured to be in a read state.

The feature of the present invention lies in the manner in which writing in the transmission memory circuit 3 is controlled by the address control circuit 2 during double copying as described above. Therefore, the following is B6, which is half the width of a standard B4 manuscript.
The operation will be explained by taking as an example the operation when copying two sized originals side by side in the main scanning direction.

In the copying operation, the reader 1 to the memory circuit 3, the memory circuit 7 to the recorder 9, and the transport circuits 10 and 11 operate by turning on a copy mode setting switch (not shown), and the encoding circuit 4 to the decoding circuit 6 operate. It is carried out in a state where it is not working. When the double copy switch 13 is turned on in this state, the control circuit 12 controls the address control circuit 2 to perform the above-described operation, and also causes the memory circuits 3 and 7 to perform the following operation.

That is, the image signal for each line of B6 size (2048 bits) derived from the reader 1 is written into the transmission memory 3 by the write access of the address control circuit 2 as described above. Here, the original is B6 size, so if you set the left edge of the original in the same position as the B4 original, the output of reader 1 will start from the 1st bit.
An image signal appears up to the 1024th bit, and white information appears from the 1025th bit to the 2048th bit. Therefore, the address control circuit 2 transfers the 1024 bits of the image signal portion to the transmitting memory into the i of the receiving memory for each bit.
Write sequentially to address and (1024+i) address. Therefore,
Reception memory 3 has addresses 0 to 1023 and addresses 1024 to
The same image information in B6 size will be written side by side at address 2047. In this case, when the address control circuit writes each bit of the image signal from the reader 1 into the memory circuit 3, it is sufficient to perform addressing twice between each bit. At the same time, by the read access of the address control circuit 2 to the other line memory in which writing in the memory circuit 3 has already been completed, reading is performed sequentially one address at a time from address 0 to address 2047. Therefore,
The image signal (2048 bits) derived from the memory circuit 4 has a signal format in which 1024 bits of information with the same content are aligned in the main scanning direction, and each bit of this image signal is sequentially transferred to the receiving memory circuit 7. be done.
Then, the image signal read out from the memory circuit 7 with a delay of one line is applied to each corresponding element of the recorder 9 via the recording amplifier 8 and recorded.
Therefore, the recorded image is two B6 size sheets arranged side by side in the main scanning direction.

In addition, until now, if the standard manuscript was B4 size, B6
Although the description has been made assuming that a standard document is double-copied, if the standard document is A4-size, A6-size can be similarly double-copied.

Further, in the above-described embodiments, the recorder 9 is a thermal head having the same number of elements as the reader, but it goes without saying that a serial printer, an inkjet printer, a laser printer, etc. can also be used.

Furthermore, the explanation of the transmitting operation and receiving operation will be omitted as they are not directly related to the gist of the present invention.
This will be easily understood from the illustrated configuration. However, it should be noted that during normal transmission, the address control circuit 2 also sequentially performs write access to the transmission memory circuit 3 one address at a time for each bit of the image signal.

Since the recording device of the present invention is configured as described above, if the document width is half that of a standard document,
It is an excellent facsimile machine with a copying function, since it is possible to simultaneously obtain two recorded images in one copying operation, and the recording time is the same as in the case of one copy.

[Brief explanation of the drawing]

The drawing is a block diagram showing a schematic configuration of the main parts of the recording apparatus of the present invention. 1...reader, 2...address control circuit, 3...
...Memory circuit for transmission, 7...Memory circuit for reception,
8...Recording amplifier circuit, 9...Recorder, 12...Control circuit, 13...Double copying switch.

Claims (1)

[Scope of utility model registration request] A memory circuit into which image signals for each line derived from the reader are sequentially introduced; Address i and (n+i) address of the circuit (i=0, 1, 2,..., n-
1 and n are the number of pixels of the image signal for one line) are accessed sequentially, and at the time of reading, each address 1 of this memory circuit is accessed sequentially.
and an address control circuit that accesses each address one by one, and the address control circuit guides each pit of the image signal read from the memory circuit to a recorder, and copies and records two identical calligraphies in the main scanning direction. A recording device having a double copying function, characterized in that: