JPH02254857A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To eliminate the need for copying or the like even when the content of both sides of an original is desired to be sent by providing a 2nd image sensor to an opposite side to a 1st image sensor and using a same original drive system to read the content of the front side and the rear side of the same original. CONSTITUTION:When a tip of an original reaches a position of a contact image sensor 5, the original is read by the contact image sensor 5 for each scanning line and the read data is processed similarly as the case with a conventional equipment and sent to a line. On the other hand, the tip of the original is detected by a 2nd paper detection switch 12 and rolled in a 2nd S roller 11 and reaches a position of a rear side use contact image sensor 10. Then the content of the rear side of the original is read for each scanning line and stored sequentially in a temporary save buffer 27. Thus, the content of both sides of the original is sent as it is.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a facsimile device that reads both sides of a document and transmits the contents thereof.

[Conventional technology]

Figure 7 shows, for example, Oki Electric Research and Development No. 137 (Vol.
55. No. 1) FIG. 6 is a cross-sectional view showing the document transport system of the conventional facsimile machine shown in P.6. In the figure, 1
2 is a document table on which a document is set; 2 is a document guide that holds down the document set on the document table 1; and 3 is a feed roller (first feed roller) that feeds the document to the lower part of the document transport system; hereinafter referred to as the S roller. ), 4 is a separation tongue for feeding only the lowest original when multiple originals are set, 5 is a contact image sensor (first image sensor) for reading the contents of the original, 6.7 9 is a discharge roller for discharging the read original document to the stacker 8, and 9 is a paper detection switch that discriminates between each of the plurality of document documents. Also, Figure 8 is from the same issue of Oki Electric Research and Development as mentioned above. FIG. 8 is a block diagram showing the conventional facsimile machine shown in FIG. In the figure, 13 is a processor block (hereinafter referred to as a processor) that controls the facsimile machine, 14 is a peripheral control block that controls the transmission control block 16, modem 17, network control block 18, etc., and 15 is a DMA that assists data transfer. /INT control block, 19 is an operation block where an operator inputs operations, 20 is an operation interface block that interfaces the operation block 19 and the processor 13, and 21 is a block that performs binarization processing of read data output from the sensor block 5a, etc. 22 is a printer block that prints on recording paper; 23 temporarily stores received image data for each scanning line and transfers the image data to printer block 22; Printer control block 24 is a ROM/RAM block used by the processor 13, 25
26 is an encode/decode block that encodes the data read by the sensor block 5a and binarized by the sensor control block 21, and decodes the received encoded data; This is a mechanical sensor block for ground detection. Next, the operation of reading the original will be explained. First, an operator sets a document to be transmitted on the document table 1, and uses the document guide 2 to align the documents in the sub-scanning direction. Then, in operation block 19, a transmission operation is performed. On the other hand, when a plurality of originals are set, only the first original is fed in due to the difference in the coefficient of friction between the original, the separation tongue 4, and the S roller 3. Then, the sent original is read by the contact image sensor 5 one scanning line at a time, and the read data is sent to the sensor control block 21. The data processed by the sensor control block 21 is accumulated in the line buffer of the sensor control block 21 for - time to synchronize the operation of the processor 13. Further, the data is sent to an encode/decode block where it is encoded and then sent out via modem 17 onto the line. The original that has been read is discharged to the stacker 8 by the discharge roller 6.7. The second document is separated from the first document by the separation tongue 4 and the S roller 3 as described above.
A gap is created between the leading edge and the trailing edge of the first document. This gap is detected by the paper detection switch 9 and notified to the processor 13 via the mechanical sensor block 26. Therefore, the processor 13 can recognize the second document, and
The same control as that for the second original can be applied to the second original.

[Problem to be solved by the invention]

Conventional facsimile machines are configured as described above, so if there is information on both sides of a single document and you want to send the content on both sides, you can copy one side and then send it as two documents. This requires a lot of time and effort, and if one side of the original is sent as is, there are problems such as the wrong side being sent. The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a facsimile device that can transmit the contents of both sides of a single document as they are.

[Means to solve the problem]

In addition to the first image sensor, the first sensor control unit, and the first S roller, the facsimile device according to the present invention has a document sensor read by the first image sensor at another point within the same document transport system. A second image sensor is provided so as to be able to read the surface opposite to the surface, and a second image sensor control section that processes data read by the second image sensor is provided at the position of the second image sensor. °Second to ensure document drive
A temporary save memory is provided to temporarily store data read by the S roller and the second image sensor.

[For use]

The second image sensor in this invention reads the side of the same document opposite to the side read by the first image sensor, and outputs it to the -time save memory. And the second
When the transmission of the data read by the first image sensor is completed, the sensor control unit inputs the data from the -time save memory, performs binarization processing, etc., and then outputs the data.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, 10 is a back side contact type image sensor (second image sensor) that reads the content on the back side of the document;
12 is a second paper detection switch for detecting the reading start position and end position of the back side of the original. Other parts are given the same reference numerals and are equivalent to those shown in FIG. Further, in FIG. 2, 10a is a second sensor block including the back side contact image sensor 10 and a circuit for performing A/D conversion, etc., and 27 is the reading by the contact image sensor 5, that is, the front side of the original ( Temporary save buffer (-time save memory) that stores the output of the second sensor block 10a until the reading of the contents of the front) side is completed.
, 2 is a second sensor control block (second sensor control section) which inputs the output of the second sensor block 10a via the -time save buffer 27 and performs binarization processing and the like. Other parts are the same as those shown in FIG. 8 with the same reference numerals. Next, the operation of reading the original will be explained. An operator sets a document to be transmitted on a document table 1, and uses a document guide 2 to align the documents in the sub-scanning direction. Then, in operation block 19, a transmission operation and an instruction to read both sides are performed. As with the conventional case, only the first original is sent in. When the leading edge of the document reaches the position of the contact image sensor 5, the contact image sensor 5 reads each scanning line, and the read data is processed in the same way as in the conventional case and sent to the line. be done. The state of the document transport system during this time is shown in FIGS. 3 and 4. on the other hand,
After the leading edge of the document is detected by the second paper detection switch 12, it is bitten by the second S roller 11 and reaches the position of the back side contact type image sensor 10. Then, the contents of the back side of the document are read for each scanning line and sequentially stored in the -time save buffer 27. When the transmission of the surface is completed, the processor 13 notifies the second sensor control block 28 to that effect. Then, the second sensor control block 28 reads the data from the temporary save buffer 27, performs predetermined processing, and then sends it to the encode/decode block 25. The data is now encoded and sent out via modem 17 onto the line. And the reading process for the back side is
The process continues until the second paper detection switch 12 is used to detect that the trailing edge of the document has passed the back-side contact image sensor IO. During this time, if the pressure on the separating tongue 4 is released and the S roller 3 is stopped, the leading edge of the next page of the document will be placed on the contact image sensor 5.
Therefore, the front side of the second page will not start reading while the back side of the first page is being read. After the back side of the first page has been read, the document is discharged to a stacker by discharge rollers 6.7. In the above embodiment, the - time save buffer 27 is provided on the output side of the second sensor block 10a, but it may be provided on the output side of the second sensor control block 28. Additionally, while the processor 13 is processing the front side of the document, if the processor 13 has sufficient processing capacity, it reads the data on the back side and transfers it from the second sensor control block 28 to the ROM/RAM block 24. You may also do so. In this case, the - time save buffer 27 is provided in the ROM/RAM block 24.

【Effect of the invention】

As described above, according to the present invention, the facsimile device is provided with the second image sensor on the opposite side of the first image sensor, and the contents of the front and back sides of the same document can be read using the same document transport system. Since the system is configured to do this, even if you want to send the contents of both sides of a document, there is no need to make copies, etc., which saves time and effort, and also has the effect of making it possible to avoid making mistakes when setting the side of a double-sided document. .

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a document transport system of a facsimile machine according to an embodiment of the present invention, FIG. 2 is a block diagram similarly showing the facsimile machine, and FIGS. FIG. 7 is a cross-sectional view showing the document transport system of a conventional facsimile machine, and FIG. 8 is a block diagram showing the same facsimile machine. 3 is an S roller (first feed roller), 5 is a contact type image sensor (first image sensor), 10 is a back contact type image sensor (second image sensor), 11 is a second S roller, 21 is a sensor control block (first sensor control unit), 27 is a temporary save buffer (-time save memory), and 28 is a second sensor control block (second sensor control unit). In addition, in the figures, the same reference numerals indicate the same or equivalent parts. Patent applicant: Mitsubishi Electric Corporation +1: f”
ZmeS Kuchira Diagram Procedure Amendment (Voluntary)

Claims (1)

[Claims] a first image sensor that reads the contents of the document passing through the document transport system; a first sensor control unit that processes the data read by the first image sensor; In a facsimile machine, the facsimile machine includes a first feed roller that is provided opposite to a sensor and that drives the document together with the first image sensor, the first image a second image sensor that is provided at a point on the opposite side of the document to the sensor and reads the content on the back side of the document; and a second sensor control unit that processes the data read by the second image sensor. , a second feed roller that is provided facing the second image sensor with the original in between and drives the original together with the second image sensor; and the original that is read by the second image sensor. A facsimile machine having a temporary save memory for storing data of the contents of the facsimile machine.