JPS59133773A - Two-sided facsimile device - Google Patents

Abstract

PURPOSE:To transmit the information on both sides of an original through a single facsimile transmission by reading the information every side of the original after providing an optical system which forms images to a single reading sensor on both sides of the original respectively. CONSTITUTION:When the upper side of an original 4 is read, a plunger 38 is controlled to cut off the optical paths of mirrors 33 and 24 with a mask plate 36 set at the lower side of the original 4. While the plate 36 is set at the upper side of the original 4 to cut off the paths of mirrors 23 and 24 when the lower side of the original is read. Thus the driving rolls 34 are revolved forward to read the surface of the original 4 after feeding the original. When this reading is over, a control circuit 30 drives a plunger 38 to shift the plate 36 to the upper side of the original 4 and then revolves adversely the rolls 34 to read the back side of the original 4. Both fluorescent lamps 21 and 31 are switched on from the starting point for feed of the original 4 and kept on until the reading is over with both sides of the original 4.

Description

DETAILED DESCRIPTION OF THE INVENTION (Sub) Technical Field The present invention relates to a double-sided facsimile loading device that is capable of transmitting both sides of one document by a single facsimile transmission.

(B) Prior Art As a conventional facsimile machine, for example, there is one shown in FIG. A paper feeding section 3, rollers 5 and 6 that transport the original 4 from the automatic paper feeding section 3 at a predetermined speed, a fluorescent lamp f7 that irradiates scanning light onto the original 4 between μm, and the original 4. a mirror 8 that reflects the light from the fluorescent rung 7 in a predetermined direction, a lens 9 that focuses the light from the mirror 8, and an 00D (charge coupling) that converts the optical information from the lens 9 into an electrical signal Yuko: Oh
arge 0upledDevices ) 10 and
OOD 10 C) An image signal amplifier 11 that amplifies the output signal to a predetermined level value, a line memory 12 that stores the signal output from the image signal amplifier 11 for each line of the original, and an output signal of the line memory 12. An encoder 13 that converts the length of continuous white pixels and the length of black pixels of information into codes.
, a buffer memory 14 that temporarily stores the encoded signal, a modulator 15 that modulates the signal read from the sofa memory 14, and an NCU (Network Control Unit) that sends the modulated signal to the line.
16, and a document receiver 17 that accommodates the scanned document 4.
Composed of Toyoshi.

In the above configuration, each time a document is sent from the document table 2, the surface of the document is sequentially optically scanned by a predetermined width, and C'cD
10 converts the optical information into an electrical signal. This electrical signal is amplified by an amplifier 11, stored in a line memory 12 for a predetermined number of lines, and then subjected to sea-dimensional encoding, two-dimensional encoding, etc. in an encoder 13, and then stored in a salt memory 14, and then to a modulator 1.
AM, FM, PM or AM-PM-VS by 5
After performing modulation such as B, the modulated signal is sent to the line via the NCU 16.

However, with conventional facsimile machines, in order to send both sides of a document by facsimile, it is necessary to send one side and then dial the other party's station again to connect and send the other side. There are limits to the improvement of operability.

(c) Object and structure of the invention The present invention has been made in view of the above, and in order to enable double-sided transmission of a document by a single facsimile transmission, optical systems are arranged on both sides of the document, and, The present invention provides a double-sided facsimile device that reverses the traveling direction of a document in accordance with the reversal of a scanning surface and captures document information on both sides into a single reading sensor.

B) Embodiment (Structure) A double-sided facsimile apparatus according to the present invention will be described in detail below.

FIG. 2 shows an embodiment of the present invention. The paper feeding system is redundant and will not be illustrated or described. However, it includes a fluorescent lamp 21 that irradiates the scanning surface of the original 4 over the entire width, and a fluorescent lamp that is reflected by the original 4. A mirror 22 that transmits the light emitted from the light lamp 21 over the entire width of the original 4 and reflects it in the longitudinal direction of the original 4, and a mirror 23 that further reflects the light reflected by the mirror 22 in the width direction of the original 4. A mirror 24 that directs the light reflected by the mirror 23 toward the reading sensor 10, a lens 25 that forms an image of the light reflected by the mirror 24 on the sensor light-receiving surface, and output signals from the reading sensor 10 are stored line by line and control commands are provided. a reading controller 26 that outputs the signal to the next stage at a predetermined timing based on the reading controller 26; an encoder 27 that converts the length of white pixels and the length of black pixels in the signal output from the reading controller 26 into codes; It has the same configuration as the modulator 28 that modulates the encoded signal in a predetermined mode, the NCU 29 that sends the modulated signal to the line, and the control circuit 30 that controls the entire system. As is clear, an optical system for scanning the surface of the original 4 is formed (numerals 36 and 37 in FIG. 2 will be explained in FIG. 3).

FIG. 3 is a side view of FIG. 2, showing the configuration of an optical system that scans both sides of the document 4, with a fluorescent lamp 31 disposed on the opposite side of the fluorescent lamp 21 across the document 4. A mirror 32 is arranged at a position symmetrical to the mirror 22 with the original 4 in between, and a mirror 32 is arranged at a symmetrical position with the mirror 23 across the original 4 to direct the reflected light from the mirror 32 toward the mirror 24. A mirror 33, a drive roller 34 that feeds the original 4 forward and backward in synchronization with the selection of the reading surface of the original, and a guide 35 that restricts the original 4 discharged from the drive roller 34 from moving up and down. A shielding plate 36 blocks one of the optical paths from the mirrors 23 and 33 to the similar mirror 24 in synchronization with the selection of the reading side of the original, and a shielding plate 36 is rotatably fixed to a fulcrum 37 based on a command from a control circuit 30. shielding plate 36
and a plunger 38 that drives the.

In the above configuration, the original 4 is supplied to the reading section,
When reading the upper side of the document 4, the plunger 38 is controlled to move the shielding plate 36 downward, that is, to block the optical path between the mirrors 33 and 24, and when reading the lower side of the original 4, the shielding plate 36 is moved upward. That is, the plunger 38 is controlled so as to block the optical path between the mirrors 23 and 24. In this case, after reading one side, the other side is read. Therefore, the document 4 is sent in and its surface is read while the drive roller 34 rotates in the normal direction. When the reading is completed, the control circuit 30 drives the plunger 38 to change the shielding plate 36 upward, and the drive roller 34 Reverse it and read the back side. The fluorescent lamps 21 and 31 are both turned on from the time when the document 4 starts being fed, and are kept on until the reading of both sides is completed. When reading the front side, the optical path is as follows: fluorescent lamp 21 → top surface of original 4 → mirror 21 and mirror 23 →
The path is formed by the mirror 24 → lens 25 → reading sensor 10, and when reading the back side, the fluorescent lamp 31 → the document 4
Bottom surface → Mirror 32 → Mirror 33 → Mi 2 = 24-+
V ys 25 → reading sensor 10I near)) @ path is formed.

In addition to operating the drive roller 234 in the forward and reverse directions, the control circuit 3o also drives the drive roller 34 in accordance with the transmission speed to a line (for example, a telephone line) to transport the document 4. In FIG. 2, the processing in the encoder 27, modulator 28, and NCU 29 that process the output signal of the reading controller 26 is the same as the same part shown in FIG. 1, so the explanation will be omitted. Control is performed so that information on both sides of the document being scanned is transmitted during communication.

According to the double-sided facsimile machine of the present invention as described above, optical systems that form images on a single reading sensor are arranged on both sides of the document, and when one side is read, the optical system of the other side is Since the information is cut off and read on one side at a time, information on both sides can be transmitted with a single facsimile transmission. In particular, since information on both sides of a document can be transmitted simultaneously during communication, the conventional inconvenience of having to call again after completing one side to send the other side when transmitting both sides is eliminated. As a result, it is possible to save labor in operations associated with facsimile communication and to transmit information on double-sided originals, so it is possible to save labor in information files.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a conventional facsimile machine. FIG. 2 is a configuration diagram showing an embodiment of the present invention. FIG. 3 is a side view of the optical system according to the present invention. Explanation of symbols 10...Reading sensor, 21'e31...Fluorescent lamp, 22.23, 24, 32, 33...Mirror, 2
5...Lens, 26...Reading controller, 2
7... Encoder, 28... Modulator, 29...N
OU. 30... Control circuit, 34... Drive controller, 36... Shielding plate, 38... Silanger.

Claims (1)

[Scope of Claims] A facsimile machine that irradiates light onto the surface of a document, guides the reflected light to a reading sensor, performs photoelectric conversion, encodes and modulates the photoelectric conversion signal, and obtains a transmission signal, comprising: a pair of light sources arranged close to both surfaces to illuminate scanning areas on both sides; a single photoelectric conversion unit that outputs an electrical signal based on the reflected light from the scanning area; and a single photoelectric conversion unit that outputs an electrical signal based on the reflected light from the scanning area; a pair of scanning light guide means for guiding the document; a driving means for guiding the document in a direction corresponding to the scanning surface; and a driving means for guiding the document in a direction corresponding to the scanning surface; A device for double-sided factor ζ, characterized in that it is provided with a shielding means for shielding.