KR100479842B1 - Power train restricts the transfer of thermal transfer ribbon - Google Patents

Abstract

The present invention relates to a power transmission device for a receiver for reducing unnecessary consumption of a thermal transfer ribbon mounted on a plain paper facsimile. It is to provide a power transmission device.

The constitutional means for achieving the present invention, when the drive motor 10 is rotated forward clockwise, the swing gear 20 is engaged with the feed gear train (31) ~ (34) by interlocking the pickup roller 36 When only the recording paper is transported and the driving motor 10 is rotated in reverse, the swing gear 20 is engaged with the feed gear trains 40 to 42 and the platen roller 44 and the discharge roller 46. By interlocking the take-up roll 48, it is characterized in that the received data is printed on the recording paper while simultaneously transferring the thermal transfer ribbon 49 and the recording paper.

Description

Power train restricts the transfer of thermal transfer ribbon

The present invention relates to a power transmission device for a receiving unit for reducing unnecessary consumption of a thermal transfer ribbon mounted on a plain paper facsimile, and more particularly, to thermoelectric during a section in which data is not printed from a pickup roller to a platen roller. The present invention relates to a power transmission device that can reduce unnecessary consumption of thermal transfer ribbons by limiting the transfer of sacrificial ribbons.

In general, a facsimile is a device that electrically transmits and receives texts, pictures, and photographs on a paper, and includes a transmission unit including a CIS (Contact Image Sensor) that recognizes the contents of the document and a CIS roller that transfers the document to the CIS. It is divided into a receiving unit including a TPH (Thermal Print Head) for receiving an electrical signal received from the outside and printing it on a recording paper, and a platen roller for transporting the recording paper to the TPH.

On the other hand, such a facsimile is generally classified into a method of using a specially processed roll-type thermal recording paper and a method of printing data using a general paper and a thermal transfer ribbon.

As shown in FIG. 1, the plain paper used in this method is configured such that the plain paper contained in the paper feed cassette 51 passes through the TPH 53 by the pickup roller 36 and the platen roller 44. At this time, the thermal transfer ribbon 56 is interposed between the TPH 53 and the general paper, and the data is printed on the recording paper while being transferred together with the recording paper.

To this end, the gear trains 60 to 71 engaged with each other to be interlocked by the drive motor 90 are installed in the frame not shown in the drawing, and the gear trains 60 to 71 are connected to each other. The pickup roller 36, the platen roller 44 and the pickup gear 35 at the end of the discharge roller 46 shaft, and the TPH gear 43 and the discharge gear 45 are engaged with each other and interlocked at a constant rotation ratio. The winding gears 47 at the ends of the winding rolls 57 are engaged with one of the gear trains 60 to 71 so as to interlock at a constant rotation ratio.

Therefore, when the drive motor 90 is rotated, the pick-up roller 36 engaged with the paper feed cassette 51, the platen roller 44 engaged with the TPH 53, and the discharge roller provided at the recording paper discharge port. At the same time, the winding roll 57 for conveying the 46 and the above-mentioned thermal transfer ribbon 56 rotates both the recording paper and the thermal transfer ribbon.

Therefore, in the conventional receiver power transmission device, the recording paper contained in the paper feed cassette 51, that is, a section irrelevant to printing the received data on the recording paper, is transferred to the TPH 53 through the pickup roller 36. Even when the winding gear 47 rotates together during the transfer section until it is sent to the conveyor, the unused thermal transfer ribbon 56 is transferred to the take-up roll 57 so that unnecessary waste of the thermal transfer ribbon 56 is generated. do.

Therefore, the present invention has been devised to solve such a conventional problem, and the main object of the present invention is to transfer only the recording paper during the transfer period irrelevant to the data printing as described above, and the recording paper as described above during the data printing period. The present invention provides a receiver power transmission apparatus which can reduce the unnecessary consumption of the thermal transfer ribbon by configuring to print the received data while simultaneously transferring the thermal transfer ribbon.

A constituent means for achieving the object of the present invention, the drive motor is fixed to the lower frame, the drive motor to the forward and reverse rotation by installing a drive gear on the rotary shaft end;

A drive gear train engaged with the drive gear to transmit power;

The bearing is installed in the lower frame and the sun gear is rotated in engagement with the drive gear train, the planetary gear is engaged with the sun gear in parallel with the rotational movement and the constant trajectory movement, and the bearing is rotated by engaging the sun gear and the planetary gear in one side. A swing gear consisting of a bracket for engaging;

A feed gear train selectively interlocked by the swing gear to transfer power to a pickup gear;

A transfer gear train which is selectively linked with the swing gear and transfers power to the TPH gear, the discharge gear and the take-up gear, respectively;

A first sensor installed on the recording paper conveying path before the TPH installation unit and operated by the recording paper conveyed;

A second sensor installed on the recording paper discharge path before the discharge roller and operated by the recording paper discharged;

The microprocessor may be configured to receive an electrical signal from the first sensor and the second sensor and to control the motor driver after a predetermined step has elapsed.

According to the above configuration, when the microprocessor senses the image data and the facsimile tone signal, the driving motor rotates forward clockwise. Therefore, the swing gear is interlocked with the feed gear train to interlock the pickup roller, thereby transferring only the recording paper.

Subsequently, when the recording sheet is transported and the first sensor is operated, the embedded microprocessor controls the motor driving unit to rotate the driving motor after a predetermined step. Therefore, the swing gear interlocks the platen roller, the discharge roller and the take-up roll by engaging the transfer gear train while performing a constant trajectory movement, thereby printing the data received on the recording paper while simultaneously transferring the thermal transfer ribbon and the recording paper.

Subsequently, when the recording paper passes completely over the second sensor, the microprocessor senses the moment when the second sensor is pressed by the recording paper and released, and controls the motor driving unit after a predetermined step, thereby resetting the driving motor. By rotating, the swing gear is engaged with the feed gear train to feed the next recording paper or is in a standby state when no image data is received.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a main configuration diagram showing the state when the power transmission device according to the present invention transfers only the recording paper, the reference numeral 10 is a drive gear 11 is installed in the shaft end drive gear train 12 (14) to (14). ) Is a drive motor engaged with the drive motor, and 20 is selectively engaged with the drive gear trains 12 and 14 to selectively transfer power to the feed gear trains 31 and 34 and the transfer gear trains 40 and 42. 36 is a pickup roller which is interlocked by feed gear trains 31 to 34, and 42, 46, and 48 are platens interlocked by the transfer gear trains 40 and 42, respectively. Rollers, discharge rollers, and winding rollers. Reference numerals 52 and 54 denote first and second sensors for controlling forward rotation and reverse rotation of the drive motor 10, respectively.

The drive motor 10 is configured to be supplied with power through a motor driver controlled by a built-in microprocessor is used a step motor that can be rotated forward and reverse relatively precisely. The drive motor 10 is installed inside the lower frame 80 and installs a drive gear 11 at its shaft end to transfer power to drive gear trains 12 to 14 engaged with the sun gear 21 to be described later. It is configured to give.

The swing gear 20 is a sun gear 21 meshed with the above-described drive gear trains 12 to 14, and a planetary gear 22 meshing with the sun gear 21 to perform rotational and trajectory motions. The sun gear 21 and the planetary gear 22 is composed of a bracket 23 for holding the bearing on one side of the member. In addition, the swing gear 20 may selectively transmit power to feed gear trains 31 to 34 or transfer gear trains 40 to 42 which will be described later according to the rotation direction of the driving motor 10. The bearing is installed in the lower frame 80 so that it can be.

The feed gear trains 31 and 34 are gears installed in the lower frame 80 so as to receive power selectively by the swing gear 20 to transmit power to the pickup gear 35. Heat.

The transfer gear trains 40 to 42 receive power selectively by the swing gear 20 to transfer power to the TPH gear 43, the discharge gear 45, and the winding gear 47. It is a gear group installed on the lower frame 80 so that the bearing.

On the other hand, as a control means for controlling the drive motor 10, the first sensor 52 and the second sensor 54 operated by the recording paper to be conveyed, and the sensors 52, 54 It is composed of a microprocessor that controls the motor drive unit according to the electrical signal. At this time, the first sensor 52 is installed on the transport path just before the TPH 53 installation part, and the second sensor 54 is installed on the discharge path just before the discharge roller 46. .

On the other hand, when the microprocessor receives a facsimile tone signal along with image data through an external trunk line, the microprocessor controls the motor driving unit so that the driving motor 10 can rotate forward clockwise. When the first sensor 52 is pressed by the recording paper to be transferred and transmits a Hi signal to the microprocessor, the microprocessor may rotate the driving motor 10 in the reverse direction after a predetermined step of a predetermined time has passed. Control the motor drive. In this case, the term 'after the predetermined step has elapsed' is the recording sheet being transported and the point of operating the first sensor 52 until the tip of the recording sheet is positioned to be engaged between the platen roller 44 and the TPH 53. The number of staff according to the feeding distance.

Subsequently, the microprocessor continuously receives a high signal while the second sensor 54 is pressed by the discharged recording paper, and the end of the recording paper passes through the second sensor 54 completely. By detecting a moment when the signal is changed to a low signal again, the motor driving unit is controlled after a predetermined step input in advance so that the driving motor 10 can be rotated clockwise again. At this time, the 'after the predetermined step elapsed' refers to the number of steps according to the conveyance distance from the paper sheet discharged through the second sensor 54 until it is completely discharged by the discharge roller 46.

Referring to Figure 4 with respect to the operation example of the receiver power transmission device according to the present invention by the above configuration as follows.

First, when the external image data and the facsimile tone signal are sensed by the microprocessor embedded in the facsimile, the microprocessor controls the motor driving unit to rotate the driving motor 10 clockwise in a clockwise direction, as shown in FIG. 3A. Similarly, by engaging the swing gear 20 with the feed gear trains 31 to 34, the pickup roller 36 feeds the recording paper contained in the feed cassette 51 into the transfer path.

Subsequently, when the recording paper is conveyed by the pickup roller 36 and presses the first sensor 52 installed on the conveying path, the microprocessor senses a Hi signal and the input predetermined schedule. After the step has passed, the motor driving unit is controlled to rotate the driving motor 10 counterclockwise as shown in FIG. 3B. Accordingly, the swing gear 20 is engaged with the feed gear train 40 to 42 to rotate the platen roller 44, the discharge roller 46, and the take-up roll 57 to heat transfer ribbons. The data received on the recording paper is printed while simultaneously transferring 56 and the recording paper.

Then, as the recording paper passes over the second sensor 54, the sensor 54 is pressed, and when the end of the recording paper passes completely through the second sensor 54, the sensor 54 is returned to its original position. do. At this time, the signal of the second sensor 54 is transmitted to the built-in microprocessor, and as described above, it detects that the state from the high state (Hi) to the low (Low) state as shown in FIG. As described above, by controlling the drive motor 10 to be rotated forward by converting the motor driving unit back to the original state, the swing gear 20 is engaged again with the feed gear trains 31 to 34, and then continues. The recording paper will be fed. In addition, when all data received from the outside is output and there is no image data, the reception is terminated, and the swing gear 20 is engaged with the feed gear trains 31 to 34 to be in a standby state.

As can be seen from the above, the receiver power transmission device according to the present invention transfers the recording paper from the pickup roller 36 to the platen roller 44 during the transfer section irrelevant to data printing as described above. Receiving unit that transfers only the recording paper during the section, and configured to drive the recording paper and the thermal transfer ribbon 56 at the same time during the data printing section, thereby reducing the unnecessary consumption of the thermal transfer ribbon 56 It will provide a power train.

1 is a main configuration diagram showing a receiving unit power transmission device of a conventional plain paper facsimile,

2 is an exploded perspective view of main parts of a power transmission device according to the present invention;

Figure 3a is a main portion of the configuration showing the state when the power transmission device transfers only the recording sheet according to the present invention,

Figure 3b is a main part configuration showing the state when the power transmission device according to the present invention to transfer the recording paper and the thermal transfer ribbon at the same time,

4 is a floor chart for explaining the operation relationship of the control means according to the present invention.

*** Explanation of symbols for the main parts of the drawing ***

10: drive motor 11: drive gear

12 ~ 14: Drive gear train 20: Swing gear

21: sun gear 22: planetary gear

23: bracket 31 ~ 34: feed gear row

35: pickup gear 36: pickup roller

40 ~ 42: Feed Gear Row 43: TPH Gear

44: platen roller 45: discharge gear

46: discharge roller 47: winding gear

48: winding gear 51: paper feed cassette

52: first sensor 53: TPH

54: second sensor 56: thermal transfer ribbon

57: winding roll 58: winding roll

60 to 71: gear train 80: lower frame

81: auxiliary frame 83: upper frame

90: drive motor 91: drive gear

Claims (2)

Upper and lower and auxiliary frames 83, 80 and 81 forming a skeleton of the built-in parts, a TPH 53 for printing data in accordance with a received signal, a pickup roller 36 for feeding recording paper, The platen roller 44 which is rotated in close contact with the TPH 53, the discharge roller 46 for discharging the printed recording paper, and the pickup gear 35 at one end of each of the rollers 36, 44, 46. In the facsimile machine which comprises the TPH gear 43 and the discharge gear 45, respectively, and the winding gear 47 of the shaft end of the winding roll 58 for conveying the thermal transfer ribbon 56, A drive motor (10) fixed to the lower frame (80) and provided with a drive gear (11) at the end of the rotation shaft for forward and reverse rotation; Drive gear trains 12 to 14 engaged with the drive gears 11 to transmit power; The bearing is installed on the lower frame 80, the sun gear 21 is rotated in engagement with the drive gear train (12) ~ (14), and the planetary planet is engaged in rotational motion and constant trajectory motion by engaging the sun gear 21 A swing gear 20 composed of a gear 22 and a bracket 23 bearing the sun gear 21 and the planetary gear 22 together to rotate in engagement with one side; A feed gear train (31) to (34) which selectively connects with the swing gear (20) and transmits power to the pickup gear (35); Transfer gear trains (40) to (42), which are selectively interlocked by the swing gear (20) and transmit power to the TPH gear (43), the discharge gear (45) and the take-up gear (47), respectively; Power transmission device for limiting the transfer of the thermal transfer ribbon, characterized in that configured as a control device for controlling the forward and reverse rotation of the drive motor (10). 2. The control apparatus according to claim 1, wherein the control means comprises: a first sensor (52) installed in a recording paper conveying path before the TPH (53) installation unit and operated by the recording paper being conveyed; A second sensor (54) installed in the recording paper discharge path before the discharge roller (46) and operated by the recording paper discharged; Power transmission device for limiting the transfer of the thermal transfer ribbon, characterized in that consisting of a microprocessor that receives the electrical signals from the first sensor 52 and the second sensor 54, and controls the motor drive unit after a predetermined step elapses. .

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