KR940001971B1 - Ink ribbon driving device for fax - Google Patents

Abstract

The apparatus provides the constant line flow of the ink ribbon maintained by the drive and driven tracters and comprises; a power source for the moving of the ink ribbon; a driven tracter (17) for supplying the ink ribbon in tension; the ribbon supply spool of the ink ribbon connected to the driven tractor with a driven belt.

Description

Ink ribbon drive

1 is a block diagram of a conventional vessel maintaining device.

2 is a schematic front view of the ink ribbon drive device according to the present invention.

3 is a schematic plan view of the ink ribbon drive device according to the present invention.

4 is an external view of an ink ribbon used in an embodiment of the present invention.

5 is an external view of a driven tractor or a driven tractor.

6 is a connecting structure of the ribbon supply rod and the moving and fixed shaft, or the ribbon recovery rod and the moving and fixed shaft.

* Explanation of symbols for main parts of the drawings

1: motor 2: power transmission gear

3: platen roller 4: thermal head

5, 6: support rod 7: ink ribbon

8: timing belt 9: driven timing pulley

10: one-way driven timing pulley 11: driven tractor

12: driven tractor 13: ribbon recovery rod

14 ribbon supply rod 15 driven belt

16: driven belt 17: paper

18: supply rod fixed shaft 19: supply rod moving shaft

20, 23: spring 21: recovery rod moving shaft

22: recovery rod fixed shaft 24: protrusion

The present invention relates to a facsimile ink ribbon driving device using plain paper.

In general, plain facsimile ink ribbons and plain paper must maintain the same line speed as they move between the thermal head and the platen roller. By the way, the plain paper can maintain the ship speed by using the conventional platen roller, but in the case of the ink ribbon, it was not possible to maintain a constant ship speed because the diameter of the wound ribbon on the driven side and the driven side to be released is changed continuously. .

Thus, in the related art, as shown in FIG. 1, a frictional plate is used to reduce an increased line speed of the rotational force transmission shaft of the driven ribbon supply rod and the driven ribbon recovery rod. That is, Figure 1 is a structural diagram of the ribbon supply rod or ribbon recovery rod described above, where 100 is a ribbon recovery rod (supply rod), 200 is a support shaft, 300 is a spring, 400 is a power source, 500 is a friction plate, and a spring 300 When the rod 100 is supported by the pressing force and the speed increases due to the diameter change of the ribbon, the friction plate 500 installed in the support shaft 200 slides to control the speed.

However, in the case of controlling the speed of the ship by the frictional force as described above, there is a problem that an abnormality in image quality may occur as the frictional force changes as the use time elapses.

Accordingly, an object of the present invention is to provide an ink ribbon driving apparatus which is designed to fundamentally remove a change in flux of an ink ribbon so that there is no image change due to time.

In order to achieve the above object, the present invention, the power source means for providing power for the transfer of the ink ribbon, driven tractor connected to the transmission gear to the power source means for moving the ink ribbon while maintaining the tension of the ink ribbon, A ribbon recovery rod is connected to the driven tractor with a driven belt to receive the rotational force of the driven tractor, and the ink ribbon is collected. And a ribbon supply rod connected to the driven tractor and driven by the driven belt to supply the ink ribbon.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

2 is a schematic front view of the ink ribbon drive device according to the present invention, and FIG. 3 is a schematic plan view of the ink ribbon drive device according to the present invention, in which 1 is a power source motor, 2 is a power transmission gear, and 3 is Platen rollers, 4 thermal heads, 5 and 6 support rods, 7 ink ribbons, 8 timing belts, 9 driven timing pulleys, 10 one-way driven timing pulleys, 11 driven tractors, 12 driven tractors, 13 Ribbon recovery rod, 14 ribbon feed rod, 15 driven belt, 16 driven belt, 17 paper, 18 feed rod fixed shaft, 19 feed rod moving shaft, 20, 23 spring, 21 return rod moving shaft , 22 denotes a recovery rod fixed shaft, and 24 denote projections.

Before explaining the operation of the present invention, for ease of explanation, the rotation for moving the ink ribbon toward the ribbon recovery rod 13 side is defined as a forward rotation, and the direction for moving the ribbon supply rod 14 side in the reverse direction Let's define it as rotation.

When the motor 1 supplies power for the transfer of the ink ribbon 7 by using a power source, power is transmitted to the driven tractor 11 connected to the motor 1 through the transmission gear 2. When the motor 1 rotates the driven tractor 11 in the forward direction, power is transferred to the driven timing pulley 10 by the timing belt 8 spanning the driven timing pulley 9.

However, the driven timing pulley 10 has a built-in one-way clutch gear installed to be idle at the time of forward rotation, and thus does not transmit power to the driven tractor 12. Accordingly, the forward rotation of the driven tractor 12 is made by the tension of the ink ribbon 7 across the driven tractor 12, and similarly, the ribbon supply rod 14 also rotates forward as the ink ribbon 7 moves. Just do. At this time, the timing belt 8 and the driven belt 16 do not function as a power transmission medium.

Here, the one-way clutch gear built in the driven timing pulley 10 has the ink ribbon (when rotating the driven tractor 11 manually in the forward direction in order to make the state caught by the ink ribbon 7 immediately before driving the tensioned state. Until the tension of 7) reaches a certain level will also be responsible for the function to prevent the driven tractor 12 to rotate along. In addition, in the case of using ink ribbons having holes at both sides, the protrusions 24 are formed at both sides of the driven tractor 12 and the driven tractor 11 so that the protrusions 24 are formed at the holes formed at both sides of the ink ribbon 7. ) Can be inserted to move the ink ribbon (7).

On the other hand, forward power is transmitted to the recovery rod moving shaft 21 by the driven belt 15 spanning the driven tractor 11 pulley so that the ribbon recovery rod 13 is rotated forward to wind the ink ribbon 7.

When the motor 1 provides the reverse rotational force, the facsimile to which the present invention is applied performs a facsimile reception function, a movement from cutting one document to being reset, or a command signal for performing a copy function. Immediately after receiving, for a short time, in this case, since the one-way clutch does not swing, the reverse rotational force of the driven tractor 11 is transmitted to the driven tractor 12 through the timing belt 8 and the reverse rotation of the driven tractor 12. The silver is transferred to the ribbon supply rod 14 through the driven belt 16 to rewind the ink ribbon 7.

At this time, it is preferable that the ship speed of the platen roller 3 for conveying the sheet 17, the driven tractor 11, and the driven tractor 12 be the same.

Although the ship speed between the driven tractor 11 and the ribbon recovery rod 13 and the driven tractor 12 and the ribbon supply rod 14 during the above operation is not the same, the driven force is driven by using friction and sliding of the belt and the belt pulley. When the belt 15 and the driven belt 16 have a predetermined force or more, the sliding is made, that is, the driven belt 15 and the ribbon recovery rod 13 are slid with the belt pulley, and the driven belt 16 and the ribbon The supply rod 14 is configured to slide with the belt pulley so that the ship speed is kept constant.

The ink ribbon 7 moving while maintaining a constant line speed is positioned by the supporting rods 5 and 6 to overlap with the paper 17 in the thermal head 4, and the paper 17 is platen roller ( 3) is moved while maintaining the ship speed.

Then, the springs 20 and 23 are arranged in the axial direction of the ribbon collecting rod fixing shaft 22 and the ribbon collecting rod moving shaft 21 or the ribbon supply rod fixing shaft 18 and the ribbon collecting rod moving shaft 19. It secures the flow space, and serves to hold the flow during the operation or replacement of the ribbon recovery rod (13), or ribbon supply rod (14).

4 is an external view of the ink ribbon 7 used in one embodiment of the present invention, in which 41 represents a hole.

The holes 41 formed in the ink ribbons 7 are positioned at both margins so as not to affect the image, and are configured such that a constant interval is maintained between the holes 41.

5 is an external view of a driven tractor 11 or driven tractor 12.

As shown in the figure, both tractors 11 and 12 have the same structure, and form a plurality of projections 25 so that the holes of the ink ribbon 7 are fitted to both sides, and the wrinkles of the ink ribbon 7 are prevented. To prevent this, the diameter of the center part can be manufactured at least equal to or larger than the diameter of the left and right sides.

6 is a diagram illustrating a connection structure between the ribbon supply rod 4 and the movable and fixed shafts 19 and 18, or the ribbon recovery rod 13 and the movable and fixed shafts 21 and 22.

The ribbon supply rod 14 is configured to be detached from the moving and fixed shafts 19 and 18 so as to be detachable, and is supported by the moving and fixed shafts 19 and 18 by the tension of the spring 20. Therefore, when disassembling the ribbon supply rod 14, the belt 16 is first separated from the fixed shaft 18, which is not hung, and in the reverse order when combined.

The coupling relationship between the ribbon recovery rod 13 and the moving and fixed shafts 21 and 22 is the same as that of the ribbon supply rod 14 and the moving and fixed shafts 19 and 18.

Therefore, the present invention constructed and operated as described above is kept constant by the driven tractor 11 and driven tractor 12 fixedly positioned by the line speed of the ink ribbon 7, regardless of the period of use. By preventing the performance degradation of the quality of the image it is possible to increase the reliability of the system.

Claims (6)

A facsimile ink ribbon drive device using plain paper, comprising: a power source means (1) for providing power for the transfer of the ink ribbon (7), and a transmission gear (2) connected to the power source means (1) for ink; A driven tractor 11 for moving the ink ribbon 7 while maintaining the tension of the ribbon 7 and a driven belt 15 connected to the driven tractor 11 to transmit rotational force of the driven tractor 11. A ribbon recovery rod 13 for receiving the ink ribbon 7 and a driven belt 11 connected to the driven tractor 11 with a timing belt 8 and configured in the same manner as the driven tractor 11 to tension the ink ribbon 7. It is composed of a driven tractor (12) for moving the ink ribbon (7) while maintaining a, and a ribbon supply rod (14) connected to the driven tractor (11) by a driven belt (16) to supply the ink ribbon (7). Ink ribbon driving device, characterized in that. The timing pulley according to claim 1, wherein the driven and driven tractors (11) are provided with timing pulleys (9, 10) on one side, respectively, as a connecting means of the timing belt (8). (10) is an ink ribbon drive device characterized in that it is configured to incorporate a one-way clutch gear for the initial set of tension of the ink ribbon (7). 2. The ink ribbon drive device according to claim 1, wherein the driven belt (15) and the driven belt (16) use a slip phenomenon to maintain a constant line speed of the ink ribbon (7). The ink ribbon drive according to claim 1, wherein the driven tractor 11 and the driven tractor 12 have a central diameter at least equal to or greater than the diameter of the left and right sides to prevent the ink ribbon 7 from being wrinkled. Device. The method of claim 1, wherein the driven tractor 11 and the driven tractor 12 is formed by forming a plurality of protrusions 24 on both sides of the body in order to use the ink ribbon 7 formed with holes 41 on both sides. Ink ribbon driving device, characterized in that. 2. The ribbon supply rod 14 and the ribbon recovery rod 13 are supported by fixed shafts 18 and 22, one end of which is supported by a spring 20, for attachment and detachment. Ink ribbon drive device characterized in that supported by the moving shaft (19, 24) supported by.