JPH02256373A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To improve the operability by providing 1st and 2nd unidirectional clutches delivering torques opposite to each other and a cam selecting a 1st state in which the 2nd unidirectional clutch depresses a recording means onto a roller and a 2nd state in which the recording means is parted from the roller. CONSTITUTION:A roller 1 is driven with a torque in one direction with a 1st direction clutch 44 and a cam 41 is driven with a torque in other direction with a 2nd unidirectional clutch 43. When an original 19 is read, the dam 41 is driven and a recording means 2 is brought into a 2nd state in which the recording means 2 is detached from the roller 1 with recording paper 18 inbetween, and the roller 1 is driven to carry the original 19. In the case of recording, the cam 41 is driven to bring the recording means 2 into the 1st state in which the means 2 is depressed onto the roller 1 via the recording paper 18 and the roller 1 is driven to carry the recording paper 18. Thus, the one roller 2 carries the original 19 and the recording paper 18 to improve the operability.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a facsimile device.

BACKGROUND OF THE INVENTION Conventional facsimile machines exchange information by transmitting/receiving image data over telephone lines. The facsimile machine includes a reading means for optically reading the contents of the document,
A recording means is provided for recording the contents of the document on recording paper based on the received image data.

In order to read the document and record it on recording paper as described above, in conventional facsimile machines, the document is fed to the reading area by a conveyance roller, and the recording paper is pressed by a recording head for recording. The recording material is supplied to the platen roller, and recording is performed while being pressed between the platen roller and the recording head. A reading operation and a recording operation are performed by rotationally driving such a conveyance roller and a platen roller, respectively, by a motor.

Problems to be Solved by the Invention In the above-mentioned facsimile apparatus, a conveyance roller and a platen roller, as well as accompanying conveyance paths, are respectively disposed in order to read a document and record it on recording paper, and furthermore, the above-mentioned rollers are At least two motors must be provided for independent rotational drive. Therefore, there are problems in that the structure of the facsimile device becomes large and heavy, and the manufacturing cost becomes high.

The purpose of the present invention is to realize weight reduction and miniaturization of the structure,
An object of the present invention is to provide a facsimile device that can be manufactured at low cost.

Means for Solving the Problems The present invention comprises a roller for conveying an original and recording paper, and a pressing means for pressing the original against the roller, and a reading method for reading the original pressed against the roller by the pressing means. means, a recording means capable of recording on a recording paper while pressing the recording paper onto a roller, and releasing the pressed state; a driving source capable of forward and reverse rotation; and one of the driving sources. a first transmitting rotational force in the direction to the roller;
A one-way clutch, a second one-way clutch that transmits the rotational power of the drive source in the other direction, and the power from the second one-way clutch to press the recording means onto the roller via the recording paper. The facsimile apparatus is characterized in that it includes a cam means for selectively achieving a first state and a second state in which the recording means is separated from the roller via the recording paper.

According to the present invention, the original is conveyed while being pressed against the roller by the pressing means, and the original in this state is read by the reading means. Further, the recording paper is conveyed by the recording means while being pressed against a roller, and the recording means performs recording on the recording paper in this state.

The roller is driven by rotational power in one direction from the drive source transmitted through the first one-way clutch, and the cam means is driven by rotational power in the other direction from the drive source transmitted through the second one-way clutch. Driven by. When reading a document, first, the drive source is rotated in the other direction to drive the cam means to set the recording means to the second state in which it is separated from the roller via the recording paper, and then the drive source is rotated in one direction. By rotating the roller in the direction, the roller is rotationally driven and the document is conveyed.

When recording, first, the drive source is rotated in the other direction to drive the cam means to bring the recording means into the first state in which it is pressed against the roller through the recording paper, and then the drive source is rotated in one direction. By rotating the roller, the roller is rotated and the recording paper is conveyed.

Since the document and the recording paper can be transported with one roller in this way, the number of parts can be reduced.

Further, since the cam means for selectively achieving the first state and the second state of the recording means is driven by a drive source, there is no need to manually drive the cam means, and the operation of the facsimile machine is improved. is improved.

Embodiment 1 [21] is a sectional view showing the basic configuration of a facsimile machine 21 which is a seventh embodiment of the present invention. A roller 1 having a horizontal axis of rotation is disposed inside a body 22 of a facsimile machine 21, and a recording means 2 and a reading glass 3 serving as a pressing means are opposed to this roller 1 by springs 4a and 4b. Pressure is applied from the direction. The recording means 2 is realized by a thermal head, for example.

The recording paper 18 is guided from the storage means 29 to the recording paper guide 20 and guided above the roller 1.

When recording on the recording paper 18, the recording means 2 is pressed against the roller 1, and the reading glass 3 is released from being pressed against the roller 1, so that the recording means 2 can perform recording. In this state, the recording paper 18 is connected to the recording means 2 and the roller 1.
facsimile machine 21 by passing between
The image data received by is recorded. The recording paper 18 on which recording has been completed is discharged from the paper discharge ports 22a and 22b.

The recording means 2 including the spring 4a is fixed to the lid 15, and can be angularly displaced in the direction of the arrow R1, as shown by the two-dot chain line, so that the recording paper 18 can be replenished and the facsimile machine 21 can be maintained. It is constructed so that it can be held in the desired position. Furthermore, a handset 27a including a transmitter and a receiver is provided on the top of the facsimile machine 21.

Facsimile! 21, when reading the contents of the original 19, the original 19 is guided below the roller 1, and the original 19 is placed between the roller 1 and the reading glass 3 pressed against the roller 1.
During this reading operation, the document tray 14 provided on the front side of the facsimile machine 21 is angularly displaced in the direction of arrow R2 to the state shown by the two-dot chain line. In this state, if the original 19 is supplied from the direction of arrow B1, the original 19 is conveyed to the reading area and a reading operation is performed.

By rotating the roller 1 in the direction of arrow R3, the document 19 passes between the roller 1 and the reading glass 3. At this time, light from a light source 10 provided on the opposite side of the reading glass 3 from the roller 1 is irradiated onto the original 19 through the reading glass 3.

The reflected light from the surface of the original 19 is reflected by a reflecting mirror 11a.

11b and llc and guided to the focusing lens 12, the focused light enters the reading means 13. The j4 taking means 13 is constituted by a CCD (1! conduit element) or the like, and after converting the reflected light into an electric signal, gives the electric signal to the signal processing section 17. The original 19 that has been read is guided by the original guide 6, goes around the roller 1, and is ejected from the paper ejection ports 22a and 22b in the direction of arrow B2.

FIG. 2 is a perspective view showing the drive mechanism of the roller 1. Near one end 5a of the rotating shaft 5 of the roller 1, a second one-way clutch 43 for driving the cam 41 and a first one-way clutch 44 for driving the rotating shaft 5 are disposed close to each other. be done. First and second one-way clutch 44.43
The power of the motor 9, which is a drive source capable of forward and reverse rotation, is transmitted to the motor 9 through gears 45 and 46. The motor 9 is realized by a stepping motor or the like.

The power transmission directions of the first and second one-way clutches 44 and 43 are opposite to each other, and when the motor 9 is driven to rotate forward, that is, when the gear 45 is rotated in the direction of arrow R4, Power is transmitted to the rotating shaft 5 via the directional clutch 44, and the roller 1 rotates. At this time, the cam 41 is stopped.

Also, when the motor 9 is driven in reverse, that is, the gear 45
When rotated in the direction of arrow R5, power is transmitted to the cam 41 via the second one-way clutch 43, and the cam 41 rotates. At this time, the roller 1 is stopped.

3 and 4 are a plan view and a sectional view showing the drive mechanism for the roller 1 and the cam 41. FIG.

Both ends 5a and 5b of the rotating shaft 5 are rotatably provided on side walls 22c and 22d of the body 22, respectively.

The second one-way clutch 43 is provided on the outer peripheral surface of a sliding bearing 49 through which the rotating shaft 5 is inserted. The power from the gear 46 is transmitted to the gear 47 which is the input end, and the cam 41 is fixed to the output end 48.

As described above, when the motor 9 is driven in reverse, power is transmitted to the output end 48, thereby driving the cam 41 to rotate.

The first one-way clutch 44 is provided on the circumferential surface of the rotating shaft 5. Power from the gear 46 is transmitted to the gear 50 which is the input end, and the output end 51 is fixed to the rotating shaft 5. As described above, when the motor 9 is driven to rotate in the forward direction, power is transmitted to the output end 51, whereby the rotating shaft 5 and the roller 1 are driven to rotate.

FIG. 5 is a block diagram showing the electrical configuration of the facsimile machine 21. As shown in FIG. The facsimile machine 21 is provided with a line network control section 25 connected to the telephone line 11.

This line network control unit 25 performs line control operations between the telephone line 11 and the facsimile machine 21.
5 includes a handset 27a including a transmitter and a handset;
A telephone section 27 for making telephone calls is connected.

The electric wire $111127 is provided with a hook state detection section 27b, and the hook state detection section 27b is connected to the control section 32.

A facsimile communication section 26 is provided between the control section 32 and the line network control section 25. Facsimile communication department 2
6 is a facsimile device 21 via the telephone line 11.
modulates and demodulates the carrier signal transmitted/received by the

The control section 6 also includes an operation section 28 including a dial key and a "start" key, a reading means 13 for optically reading an image of a document 19 loaded in the facsimile device 21 , and a telephone line 11 . A recording means 2 for recording the image data received by the receiver is connected to the recording means 2, respectively.

A document detecting means 31 composed of a microswitch or the like provides a detection signal to the control section 32 when detecting the document 19. Microswitches 33 and 34 respectively provided on the recording means 2 and the reading glass 3 give detection signals to the cam position detection section 35 when pressed by the cam 41. The cam position detection section 35 detects the position of the cam 41 based on the detection signal.

The control section 32 controls the motor forward rotation circuit 36, the motor reverse rotation circuit 37, and the switch 38 based on the output from the document detection means 31 or the cam position detection section 35. Control part 3
Based on the control signal from 2, the motor forward rotation circuit 36 outputs a drive signal to rotate the motor 9 in the forward direction, and the motor reverse circuit 37 outputs a drive signal to rotate the motor 9 in the reverse direction. given to. The switch 38 outputs a drive signal from either the motor forward rotation circuit 36 or the motor reverse rotation circuit 37 based on the 1111m signal from the control section 32. The motor 9 is rotationally driven by a drive signal from the switch 38.

FIG. 6 is a flowchart for explaining the reading operation of the original 19 in the facsimile machine 21, and the 70th
2 is a diagram showing the state of the cam 41 during a reading operation. In step a1, it is determined whether or not the original 19 has been detected, and if the original 19 has been detected, step a2
In step a2, the position of the cam 41 is detected, and in step a3, it is determined whether it is in a readable state.

If it is not in a readable state, that is, if the recording means 2 is pressed against the roller 1 via the recording paper 18 as shown in No. 7 [A(1)], the switching device 3 is turned off in step a4.
8, switching to the motor reversing circuit 37 is performed. In step a5, the motor 9 is driven in the reverse direction, that is, the gear 45 is rotated in the direction of arrow R5, thereby rotating the cam 41 in the direction of arrow R6, and the cam 41 is brought into a readable state, as shown in FIG. 7(2). The recording means 2 is kept separated from the roller 1 by the cam 41. The microswitch 33 checks the cam 41 to determine whether reading is possible.
Judgment is made based on whether or not it was pressed. step a3
, if it is already in a readable state, step a6
Proceed to.

In step a6, the motor forward rotation circuit 36 is controlled by the switching device 38.
The reading operation of the original 19 is performed in step a7. That is, as shown in FIG. 7(3), only the reading glass 3 is pressed against the roller 1, and the recording means 2 is separated from the roller 1 by the cam 41. In this state, by driving the motor 9 in normal rotation, that is, by rotating the gear 45 in the direction of arrow R4, the roller 1 is driven to rotate in the direction of arrow R3 and the document 19 is fed. The container is conveyed while being compressed by the glass 3 for use.

FIG. 8 is a flowchart for explaining the recording operation in the facsimile device 21, and FIG. 9 is a diagram showing the state of the cam 41 during the recording operation. step b1
Then, it is determined whether or not a facsimile has been received. If the facsimile is received, the process proceeds to step b2. In step b2, the position of the cam 41 is detected, and in step b
In step 3, it is determined whether or not the recording is possible.

When the recording is not possible, that is, when the reading glass 3 is pressed against the roller 1 as shown in FIG. 9(1), the switch 38 switches to the motor reversing circuit 37 in step b4. will be held. In step b5, the motor 9 is driven in reverse, that is, the gear 45 is driven in the opposite direction. '! f
By rotating the cam 41 in the R5 direction, the cam 41 is rotated in the R6 direction.
Rotate it in the direction shown in Fig. 9 (2) to make it ready for recording.
As shown in FIG. 2, the reading glass 3 is separated from the roller 1 by the cam 41. Whether or not the recording is possible is determined by whether or not the microswitch 34 is pressed by the cam 41. In step b3, if the recording is already possible, the process advances to step b6.

In step b6, the motor forward rotation circuit 36 is controlled by the switching device 38.
The recording operation is performed in step b7. In other words, as shown in FIG. 9(3), the recording means 2
Only the reading glass 3 is pressed against the roller 1 via the recording paper 18, and the reading glass 3 is separated from the roller 1 by the cam 41.

In this state, if the motor 9 is driven in normal rotation, that is, the gear 45 is rotated in the direction of arrow R4, and the roller 1 is rotated in the direction of arrow R3, the recording paper 18 is sandwiched between the recording means 2 and the roller 1. It is conveyed in the direction of arrow B2 in a pressed state.

As described above, according to this embodiment, the cam 41 can release either the pressing state of the recording means 2 against the roller 1 or the pressing state of the reading glass 3 against the roller 1. , the recording paper 18 or the original document 19 can be individually conveyed using only the roller 1. Also, the first
By using the second direction clutch 44, 43, the roller 1 and the cam 41 can be driven by the motor 9 alone. Therefore, the number of parts can be reduced compared to conventional facsimile machines, and the facsimile machine 21 can be made lighter and smaller in size, and can be manufactured at lower cost.

Furthermore, it is no longer necessary to manually release the pressing state of the recording means 2 against the roller 1 or the pressing state of the reading glass 3 against the roller 1 using, for example, a switching lever, thereby improving the operability of the facsimile machine 21. is improved.

In this embodiment, the position of the cam 41 is detected by the conduction/non-conduction of the microswitches 33 and 34. However, if the motor 9 is a stepping motor, the cam 41
For example, if the amount of angular displacement of the motor 9 is 90 degrees, the number of steps of the motor 9 corresponding to 90 degrees is determined in advance, and the position of the cam 41 is detected by angularly displacing the cam 41 by 90 degrees. You can also do it like this.

In addition, the rod lens is placed under the reading glass 3 by the roller 1.
A plurality of image sensors may be arranged along the axis of the roller 1, and the document image through the rod lens may be read by a line-type image sensor extending along the axis of the roller 1.

Effects of the Invention As described above, according to the present invention, the first roller can transport the original and the recording paper, so the number of parts can be reduced. This makes it possible to reduce the weight and size of the facsimile device, and also to manufacture it at low cost.

In addition, the cam means can be driven by the drive source for driving the rollers, and there is no need to manually switch between the first state, which is a recordable state, and the second state, which is a readable state. The operability of the device is greatly improved.

[Brief explanation of drawings]

1 is a cross-sectional view showing the basic configuration of a facsimile machine 21 according to an embodiment of the present invention, FIG. 2 is a perspective view showing the drive mechanism of the roller 1, 31J is a cross-sectional view of the drive mechanism of the roller 1,
4 is a plan view of the drive mechanism of the roller 1, FIG. 5 is a block diagram showing the electrical configuration of the facsimile device 21, FIG. 6 is a flowchart for explaining the reading operation of the document 19 in the facsimile device 21, and FIG. Figure 7 shows the reading movement f.
812I is a flowchart for explaining the recording operation of the facsimile device 21, and FIG. 9 is a diagram showing the state of the cam 41 during the recording operation. DESCRIPTION OF SYMBOLS 1...Roller, 2...Recording means, 3...Reading glass, 9...Motor, 13...Reading means, 18...
・Recording paper, 19... Original, 21... Facsimile device, 41... Cam, 43... Second one-way clutch, latch

Claims (1)

[Scope of Claims] A reading device comprising a roller for conveying the original and recording paper, a pressing means for pressing the original against the roller, and a reading means for reading the original pressed against the roller by the pressing means, and on the roller. A recording means capable of recording on a recording paper while pressing the recording paper against the paper and releasing the pressed state, a drive source capable of forward and reverse rotation, and a rotational power of the drive source in one direction. a first transmission to said roller;
A one-way clutch, a second one-way clutch that transmits the rotational power of the drive source in the other direction, and the power from the second one-way clutch to press the recording means onto the roller via the recording paper. A facsimile apparatus comprising cam means for selectively achieving a first state and a second state in which the recording means is separated from the roller via the recording paper.