KR20050088142A - Ink ribbon winding mechanism and printer device - Google Patents

Abstract

An ink ribbon winding mechanism comprises a planetary gear mechanism consisting of a sun gear rotating forwardly and backwardly according to the movement of a carrier, a holder rotatably installed in the sun gear and having a pressing section for pressing the sun gear, a first planetary gear installed in the holder and meshing with the sun gear, and a second planetary gear installed in the holder and meshing with the sun gear, a winding means (winding gear, intermediate gear) with which either the first planetary gear or the second planetary gear of the planetary gear mechanism meshes and which is driven in the ink ribbon winding direction, and a holder lock means for fixing the holder at a neutral position where the first and second planetary gears do not mesh with the winding means. Thus, during the non- printing movement of the carrier, the holder can be fixed at the neutral position where the first and second planetary gears do not mesh with the winding means, by the holder lock means, so that even if the ink ribbon cassette is of the ink replenishing type in which ink ribbon winding is not effected, over-replenishment of ink to the ink ribbon does not occur, ensuring that the print density is constant.

Description

Ink ribbon winding mechanism and printer device {INK RIBBON WINDING MECHANISM AND PRINTER DEVICE}

The present invention relates to an ink ribbon winding mechanism that winds an ink ribbon in response to movement of a carrier, and a printer device including such a mechanism.

A description will be given with reference to FIG. 1 showing the configuration of a conventional ink ribbon winding mechanism. The carrier 26 on which the printing head 12 and the cassette 11 are mounted is set to move back and forth in parallel with the platen 23. The printing head 12 is disposed opposite the platen 23, the ink ribbon 13 is sandwiched between the printing head 12 and the platen 23, and printing is performed while the ink ribbon 13 is wound. This is performed by pressing the printing head 12 on the platen 23 side.

The winding of the ink ribbon 13 by the cassette 11 is performed as described below. 1 shows the rotational direction of the gears 14 to 19 assembled in the cassette 11 when the carrier 26 moves in the direction of arrow A and the dotted arrow A ', respectively.

When the carrier 26 moves in the A direction, the gear 14 rotates in engagement with the rack 24 arranged parallel to the platen 23. The rotation of the gear 14 is transmitted to the sun gear 15.

The L-shaped lever 20 is supported to rotate about the rotation axis of the sun gear 15. In addition, the lever 20 may be pressed against the sun gear 15. The lever 20 has rotatable gears 16, 17 that mesh with the sun gear 15.

When the sun gear 15 rotates in the direction of the arrow, the lever 20 pressed against the sun gear 15 also has the same direction as the sun gear 15 until the satellite gear 16 engages with the gear 18. Rotate in the direction of the arrow B.

The winding reel (not shown) fixed to the rotation shaft of the gear 18 rotates in the same direction as the gear 18 to wind the ink ribbon 13 in the direction of arrow C. FIG.

When the carrier 26 moves in the A 'direction, the sun gear 15 rotates in the direction indicated by the dotted line, and the lever 20 which is pressed against the sun gear 15 has the satellite gear 17 in the gear 19. It rotates in the same direction as the sun gear 15 (arrow B 'direction) until it engages with.

The winding reel (not shown) fixed to the rotating shaft of the gear 19 rotates in the same direction as the gear 19 to wind the ink ribbon 13 in the direction of the arrow C '(see, for example, reference 1).

By this system, the ink ribbon 13 is wound in a direction corresponding to the moving direction of the carrier 26.

Cited Patent 1: Japanese Unexamined Patent Publication No. 05-50734 (p. 2, Fig. 1)

1 is a view for explaining the configuration of a conventional ink ribbon winding mechanism;

2 is a front view of the same carrier periphery as shown in FIG. 4, seen in the direction of arrow D, with the ink ribbon cassette and ink ribbon cassette holder removed;

3 is a perspective view of the same carrier periphery as shown in FIG. 4, seen in the direction of arrow F, with the ink ribbon cassette and ink ribbon cassette holder removed;

4 is a perspective view of the printer apparatus of the first embodiment,

FIG. 5 is a view in the direction of an arrow D of the apparatus of FIG. 4; FIG.

Figure 6 is a view in the direction of the arrow E of the apparatus of Figure 4,

7A and 7B are perspective views of the ink ribbon cassette, FIG. 7A is an arrow D direction view of the ink ribbon cassette of FIG. 4, and FIG. 7B is an arrow G direction view of the ink ribbon cassette of (a),

8 is a front view of the apparatus of FIG. 4, seen in the direction of arrow D, with the ink ribbon cassette, ink ribbon cassette holder, and holder removed;

9 is a perspective view of the apparatus of FIG. 8;

10 is a perspective view from arrow F of the device of FIG. 4 with the rack removed;

11 is a perspective view illustrating the holder of FIG. 2;

12 is an explanatory diagram of a second embodiment;

13 is an explanatory diagram of a third embodiment.

[Description of symbols on the main parts of the drawings]

11: cassette 12, 108: printing head

13: ink ribbon 14, 18, 19: gear

15, 413: sun gear 16, 17: satellite gear

20: lever 23: platen

24, 401: rack 26, 107: carrier

100: printing apparatus 101: main body base

103 and 105: guide shaft 109: ink ribbon cassette

109a and 109b: ink ribbon guide portion 109c: hole

111: ink ribbon 113: knob

131: cam 201: fixed carrier

301: movable carrier 303: through hole

403: pinion 405: first gear

411: second gear 415: shaft

417: circular recess 421: holder

423: cylinder 425, 427: protrusion

429, 431: Axial part 451: First satellite gear

453: second satellite gear 461: winding gear

463: middle gear 465: winding shaft

501: leaf spring 503: stopper surface

505: roller 601: flat

509, 603: Convex 605: Concave

701: base 703: arm

703a: face 705: rock arm

P: recording medium

HL: Holder lock PG: Satellite gear

The ink ribbon winding mechanism having the above-described configuration winds up the ink ribbon 13 each time the carrier 26 moves in the direction of arrow A or A ', even when the printing head does not print.

At this time, if the cassette 11 is an ink supply cassette, the ink on the ink ribbon 13 is excessively supplied, and the printing is too dark.

The present invention has been made to solve the above problem, and an object of the present invention is to provide a printer apparatus having a winding mechanism and a constant printing ink density.

The first aspect of the present invention for solving the above problems is described using, for example, FIG. 2 showing the first embodiment of the present invention, and the satellite gear mechanism is adapted to the direction of movement of the carrier 107. It is rotatably supported by a holder 421 and a holder 421 rotatably supported around the axis of rotation of the sun gear 413, including a sun gear 413 rotating in front and back, and a pressure contact portion for pressing the sun gear 413. A first satellite gear 451 meshing with the sun gear 413, and a second satellite gear 453 rotatably supported by the holder 421 and meshing with the sun gear 413. In the winding means consisting of the intermediate gear 463 and the winding gear 461 engaged with the intermediate gear 463, the first satellite gear 451 can be engaged with the winding gear 461, and the second satellite gear 453 ) May be engaged with the intermediate gear 463. When the take-up gear 461 is engaged with the first satellite gear 451 or the intermediate gear 463 is engaged with the second satellite gear 453, the take-up gear 461 rotates in the direction of winding the ink ribbon. .

The holder lock (HL) means fixes the holder 421 at an intermediate position where the first satellite gear 451 and the second satellite gear 453 do not engage with the winding gear 461 and the intermediate gear 463 as winding means. Are arranged.

When the carrier moves without printing, by the holder lock means, the holder 421 is engaged with the winding gear 461 and the intermediate gear 463 in which the first satellite gear 451 and the second satellite gear 453 are winding means. Is fixed at an intermediate position, and the winding of the ink ribbon is not performed. Thus, even if the ink ribbon cassette is an ink supply cassette, the ink supplied to the ink ribbon is not oversupplied, and the printing ink density becomes constant.

In a second aspect of the invention there is provided a movable, wherein the carrier in the first aspect comprises a fixed carrier and an ink ribbon, a satellite gear mechanism, and winding means, which is movable relative to the fixed carrier and withdrawable from the record carrier. It further comprises a carrier. The holder lock means includes a convex portion located on one of the holders of the fixed carrier or the satellite gear mechanism, and a concave portion located on the other and coupled to the convex portion when the movable carrier withdraws from the recording medium and fixes the holder in a neutral position. It is an ink ribbon winding mechanism.

Generally, in order to prevent interference between the printing head of the carrier and the notified recording medium, the fixed carrier and the printing head include a movable carrier, the movable carrier being widely withdrawn from the recording medium while paper is fed. Is used.

The holder lock means of the present invention has a convex portion located on one of the holders of the fixed carrier or the satellite gear mechanism, and a concave portion located on the other and coupled to the convex portion when the movable carrier withdraws from the recording medium, and fixes the holder in a neutral position. In the configuration, the holder lock means can be operated using the movable mechanism of the widely used movable carrier, thereby simplifying the construction.

(First embodiment)

4 and 5, the overall configuration of the printer apparatus equipped with the ink ribbon winding mechanism of this embodiment will be described below. 4 is a perspective view of the printer device, FIG. 5 is a view of the device of FIG. 4 viewed in the direction of arrow D, and FIG. 6 is a view of the device of FIG. 4 viewed in the direction of arrow E. FIG.

In this figure, the printer apparatus 100 is mainly divided into a main body base 101 and a carrier 107 movably coupled with two guide shafts 103 and 105 arranged horizontally along the main body base 101. .

The carrier 107 is provided with a printing head 108 for printing on the recording medium P and an ink ribbon cassette 109 for storing ink ribbon.

7A and 7B are perspective views of the ink ribbon cassette 109, and FIG. 7A is a view seen from the arrow D direction in FIG. 4, and FIG. 7B is a view of (a) seen from the arrow G direction. As shown in (b), the circulation ink ribbon is zigzag stored in the ink ribbon cassette 109. The ink ribbon is guided by the ink ribbon guide 109a and the ink ribbon guide 109b formed in the ink ribbon cassette 109, and the ink ribbon 111 between the ink ribbon guide 109a and the ink ribbon guide 109b. A portion of the portion is exposed outside the ink ribbon cassette 109. The ink ribbon 111 exposed to the outside faces the printing head.

In the ink ribbon cassette 109, a supply roller (not shown) and a pressure roller for elastically pressing the supply roller through the ink ribbon 111 are formed, and the ink ribbon 111 is wound by rotating the supply roller. Can lose.

As shown in Fig. 7B, a hole 109c is formed on the rear surface of the ink ribbon cassette 109 opposite the coupling hole formed at the center of rotation of the feed roller inside the ink ribbon cassette 109.

As shown in FIG. 7A, a knob 113 connected to the center of rotation of the feed roller inside the ink ribbon cassette 109 is provided at the front of the ink ribbon cassette 109.

Next, the carrier 107 will be described below with reference to FIGS. 8 to 11. Fig. 8 is a front view of Fig. 4 as seen in the direction of arrow D, with the ink ribbon cassette, ink ribbon cassette holder, and holder removed. FIG. 9 is a perspective view of FIG. 8, and FIG. 10 is a perspective view seen from the arrow F direction of FIG. 4 with the rack removed. FIG. 11 is a perspective view illustrating the plate of FIG. 2. FIG.

As shown in Fig. 10, the carrier 107 is composed of a fixed carrier 201 and a movable carrier 301 including the printing head 108 and the ink ribbon cassette 109 described above.

The fixed carrier 201 has a through hole 203 formed in a horizontal direction, and the guide shaft 105 is inserted into the through hole 203. The movable carrier 301 also has a through hole 303 formed in the horizontal direction, and the guide shaft 103 is inserted into the through hole 303. The cross section of the through hole 303 is a horizontally long hole.

The fixed carrier 201 has a guide shaft 205 formed vertically, and the movable carrier 301 has a groove 305 having a substantially U-shaped cross section to which the guide shaft 205 is coupled. The movable carrier 301 is movable in the vertical direction with respect to the fixed carrier 201.

The belt 205 installed in the main body base 101 and extending horizontally is fixed to the belt fixing portion 207 formed on the fixed carrier 201. The belt 205 is driven in a horizontal direction by a driving means not shown, and the carrier 107 composed of the fixed carrier 201 and the movable carrier 301 is guided by the guide shaft 105 and the guide shaft 103. And reciprocate in the horizontal direction.

4, 5 and 6, the cam 131 formed on the side of the printer device 100 is rotated, the entire guide shaft 103 is lifted by the transfer mechanism not shown, and the movable carrier 301 ) Is lifted relative to the fixed carrier 201. This mechanism of elevating the movable carrier 301 is used to withdraw the printing head 108 from the recording medium P during the time of feeding paper, etc., and is a mechanism widely used for a printer apparatus.

Reference numeral 311 denotes an ink ribbon cassette holder for holding the ink ribbon cassette 109.

An ink ribbon winding mechanism 400 is formed on the movable carrier 301 to wind the ink ribbon 111 of the ink ribbon cassette 109.

The rack 401 is installed horizontally in the body base 101 of the printer apparatus 100, as shown in FIGS. 4, 5, 8, and 9.

As shown in FIGS. 8, 9, and 10, the movable carrier 301 has a pinion 403 engaged with the rack 401, and a first axis having a rotation axis in a direction different from that of the pinion 403. Gear 405 is provided. Also, as shown in FIG. 10, between the pinion 403 and the first gear 405 is fixed to the rotation axis of the first bevel gear 407 and the first gear 405 fixed to the rotation axis of the pinion 403. And a second bevel gear 409 that engages with the first bevel gear 407, such that rotation of the pinion 403 is transmitted to the first gear 405.

8, 9, and 10, the movable carrier 301 has a smaller number of second gears 411 engaged with the first gear 405 and fewer than the second gears 411. A sun gear 413 having a gear mountain and fixed to the rotation shaft of the second gear 411 is formed.

As shown in FIG. 9, a circular recess 417 is formed at a side of the sun gear 413 about a shaft 415 rotatably supporting the sun gear 413.

As shown in FIG. 11, the shaft 415 fits into a cylinder 423 located approximately in the center of the holder 421, and the holder 421 is rotatably supported about the shaft 415. In addition, the holder 421 has protrusions 425 and protrusions 427 formed on both sides of the cylinder 423 to be pressed against the inner wall of the circular recess 417 of the sun gear 413. Due to the friction generated between the protrusions 425, 427 and the inner wall of the circular recess 417 of the sun gear 413, the holder 421 rotates with the sun gear 413.

The holder 421 has a shaft portion 429 and a shaft portion 431 formed on both sides of the cylinder 423, the shaft portion 429 is capable of rotating the first satellite gear 451 meshing with the sun gear 413. And the shaft portion 431 rotatably supports the second satellite gear 453 engaged with the sun gear 413 (see FIGS. 8 and 9 for the second satellite gear 453. FIG. Not shown). Here, the sun gear 413, the holder 421, the first satellite gear 451, and the second satellite gear 453 constitute a satellite gear (PG) mechanism.

As shown in Figs. 8 and 9, in the movable carrier 301, a winding gear 461 and an intermediate gear 463 meshing with the winding gear 461 are configured as winding means.

The shape of the holder 421 is that the take-up gear 461 meshes with the first satellite gear 451 when the holder 421 of the satellite gear mechanism rotates in one direction around the axis 415, and the holder 421 The intermediate gear 463 is set to engage the second satellite gear 453 when rotating in the other direction.

A winding shaft 465 that rotates together with the winding gear 461 is formed at the rotational center axis of the winding gear 461. When the ink ribbon cassette 109 is installed on the carrier 107, this winding shaft 465 is connected to the feed roller inside the ink ribbon cassette 109 through the hole 109c at the rear of the ink ribbon cassette 109. It fits into the coupling hole formed at the center of rotation.

Hereinafter, the holder lock HL means will be described with reference to FIGS. 2 and 3. Fig. 2 is a front view of the same carrier periphery as shown in Fig. 4, seen in the direction of arrow D, with the ink ribbon cassette and ink ribbon cassette holder removed. Fig. 3 is a perspective view of the same carrier periphery as shown in Fig. 4, seen in the direction of arrow F, with the ink ribbon cassette and ink ribbon cassette holder removed.

As shown in Fig. 3, a V-shaped convex portion 603 having a sharp end portion formed by pressing a thin plate and extending to the holder 421 has its base end fixed to the fixed carrier 201 side. It is located at the distal end of the channel plane 601.

In the holder 421, when the movable carrier 301 moves upward to withdraw from the recording medium P, it engages with the convex portion 603 and moves the holder 421 to a neutral position (first satellite gear 451). A wide V-shaped recess 605 is formed in which the second satellite gear 453 is not engaged with the winding gear 461 of the winding means and is fixed to the intermediate gear 463 of the winding means.

In the present embodiment, the inlet shape of the recess 605 is such that the position of the holder 421 is the intermediate gear from the position where the first satellite gear 451 meshes with the take-up gear 461. As long as the movable carrier 301 is raised, the convex portion 603 is set to engage with the concave portion 605 as long as it is within the range up to the engaged position with the 463.

Hereinafter, the operation of the above configuration will be described.

In printing on the recording medium P, the carrier 107 moves along the guide shaft 103 and the guide shaft 105, and printing is performed on the recording medium P. As shown in FIG. This movement of the carrier 107 involves the rotation of the pinion 403 in engagement with the rack 401. The rotation of the pinion 403 is transmitted to the sun gear 413 through the first bevel gear 407, the second bevel gear 409, the first gear 405, and the second gear 411.

When the moving direction of the carrier 107 is in the direction of arrow I (thick arrow) in Fig. 8, the sun gear 413 rotates counterclockwise. When the moving direction of the carrier 107 is in the direction of arrow II (thin line arrow) in Fig. 8, the sun gear 413 rotates clockwise. When the sun gear 413 rotates, the first satellite gear 451 and the second satellite gear 453 of the satellite gear mechanism also rotate. In addition, the holder 421 rotates along the sun gear 413.

As shown in FIG. 8, if the sun gear 413 rotates in the direction of the thick line arrow, the holder 421 also rotates in the direction of the thick line arrow, and the second satellite gear 453 is connected to the intermediate gear 463. To interlock. At this time, the intermediate gear 463 and the take-up gear 461 rotate in the direction of the thin line arrow. The rotation of the holder 421 stops when the second satellite gear 453 is engaged with the intermediate gear 463, and the protrusions 425 and the protrusions 427 of the holder 421 are circular to the sun gear 413. The inner wall of the recess 417 is in frictional contact.

On the other hand, if the sun gear 413 rotates in the direction of the thin line arrow, the holder 421 also rotates in the direction of the thin line arrow, and the first satellite gear 451 meshes with the take-up gear 461. At this time, the take-up gear 461 rotates in the direction of the thick line arrow. The rotation of the holder 421 stops when the first satellite gear 451 is engaged with the take-up gear 461, and the protrusions 425 and the protrusions 427 of the holder 421 are circular to the sun gear 413. The inner wall of the recess 417 is in frictional contact.

The rotational direction of the winding gear 461 is the same when the carrier 107 moves in the direction of arrow I (thick line arrow), or when the carrier 107 moves in the direction of arrow II (thin line arrow).

The rotation of the take-up gear 461 also causes the take-up shaft 465 to rotate in the same direction, causing a rotational drive of the feed roller inside the ink ribbon cassette 109, so that the winding of the ink ribbon 111 is performed.

Next, when the carrier 107 moves along the guide shaft 103 and the guide shaft 105 without printing on the recording medium P, the movable carrier 301 of the carrier 107 is raised to raise the carrier 107. Is withdrawn from the recording medium P before moving. 2 and 3, the recess 605 of the holder 421 is engaged with the convex portion 603 of the fixed carrier 201, and the holder 421 is in a neutral position (first). Since the satellite gear 451 is not engaged with the winding gear 461 of the winding means and the second satellite gear 453 is not engaged with the intermediate gear 463 of the winding means, the rotation of the holder 421 is prohibited. do.

For this reason, even when the carrier 107 moves, the take-up gear 461 does not rotate, and winding of the ink ribbon 111 is not performed.

According to the above configuration, the following effects are obtained.

(1) When the carrier 107 moves along the guide shaft 103 and the guide shaft 105 without printing on the recording medium P, the winding of the ink ribbon 111 is not performed. Even if the ink ribbon cassette 109 is an ink supply cassette, the ink is not oversupplied to the ink ribbon 111, and as a result, the printing ink density becomes constant.

When the carrier 107 moves along the guide shaft 103 and the guide shaft 105 without printing on the recording medium P, the winding of the ink ribbon 111 is not performed, and thus the energy of the apparatus can be stored. Moreover, the durability of the ink ribbon winding mechanism is improved.

(2) The convex portion 603 formed on the fixed carrier 201 and the concave portion 605 formed on the movable carrier 301 are both V-shaped, and the inlet shape of the concave portion 605 is the position of the holder 421. Wherever the first satellite gear 451 is engaged with the take-up gear 461 to the position where the second satellite gear 453 is engaged with the intermediate gear 463, the movable carrier 301 will rise. At the time, the convex portion 603 is set to engage with the concave portion 605. By such a configuration, when the movable carrier 301 is raised, the convex portion 603 is necessarily engaged with the concave portion 605, and the rotation of the holder 421 can be inhibited.

(3) Since the convex portion 603 is formed by pressing a thin plate, the convex portion 603 has elasticity. Therefore, when the movable carrier 301 is raised and the recess 605 of the holder 421 is engaged with the convex portion 603 of the fixed carrier 201, the shock can be absorbed.

The present invention is not limited to the above embodiment. Although in the above embodiment, the convex portion 603 is formed in the fixed carrier 201 and the concave portion 605 is formed in the movable carrier 301, on the contrary, the concave portion is formed in the fixed carrier 201. And a convex portion may be formed in the movable carrier 301.

In the above embodiment, using the mechanism for raising the movable carrier 301 at the time of paper feeding, the recess 605 of the holder 421 of the movable carrier 301 is the convex portion 603 of the fixed carrier 201. Meshes with. However, for example, the convex portion may be installed in the movable carrier 301, and the holder lock means having the convex portion coupled and removed from the recess 605 of the holder 421 may be separately installed in the movable carrier 301. have.

(Second embodiment)

It demonstrates with reference to FIG. The difference between this embodiment and the first embodiment is the configuration of the holder lock mechanism, and the rest of the rest is the same. Therefore, the same parts as those in FIG. 2 showing the first embodiment use the same reference numerals, and redundant descriptions are omitted.

The figure shows a state in which the movable carrier 301 has not withdrawn from the recording medium. The base end of the leaf spring 501 is attached to the movable carrier 301 by an arm. At the distal end of the leaf spring 501 is a roller 505 that can be pressed against the stopper surface 503 formed on the fixed carrier 201. In addition, a convex portion 509 having a V-shaped sharp end portion extends to the holder 421 side at the center of the leaf spring 501.

The holder 421 has a V-shaped recess 605 having a wide inlet to engage the convex portion so that the holder 421 is neutral when the movable carrier 301 moves upward to withdraw from the recording medium P. FIG. Lock in place.

Also, in this embodiment, the shape of the inlet of the recess 605 is such that the position of the holder 421 is intermediate from the position where the first satellite gear 451 engages with the take-up gear 461. Regardless of where it is within the range up to the engaged position with the gear 463, the convex portion 509 is set to engage the concave portion 605 when the movable carrier 301 is raised.

Hereinafter, the operation of this configuration will be described. From the state shown in the figure, the movable carrier 301 ascends and withdraws from the recording medium P. FIG. Then, the roller 505 presses the stopper surface 503 of the fixed carrier 201, the leaf spring 501 is bent, and the recess 605 of the holder 421 is the convex portion 509 of the leaf spring. ), The holder 421 is fixed to the neutral position, the rotation of the holder 421 is prohibited.

According to the above configuration, the following effects are obtained.

(1) When the carrier 107 moves along the guide shaft 103 and the guide shaft 105 without printing on the recording medium P, the winding of the ink ribbon 111 is not performed. Even if the ink ribbon cassette 109 is an ink supply cassette, the ink is not oversupplied to the ink ribbon 111, and as a result, the printing ink density becomes constant.

When the carrier 107 moves along the guide shaft 103 and the guide shaft 105 without printing on the recording medium P, the winding of the ink ribbon 111 is not performed, and thus the energy of the apparatus can be stored. In addition, the durability of the ink ribbon winding mechanism is improved.

(2) The convex portion 509 located in the leaf spring 501 and the concave portion 605 located in the holder 421 are both V-shaped, and the inlet shape of the concave portion 605 has a position of the holder 421. (For example, from the position where the first satellite gear 451 engages with the take-up gear 461 to the position where the second satellite gear 453 engages with the intermediate gear 463), the movable carrier ( The convex portion 509 is set to engage with the concave portion 605 when the 301 is raised. With such a configuration, when the movable carrier 301 is raised, the convex portion 509 necessarily engages with the concave portion 605, and the rotation of the holder 421 can be inhibited.

(3) Since the convex portion 509 is formed in the leaf spring 501, the movable carrier 301 is raised, and the concave portion 605 of the holder 421 is convex portion 509 of the leaf spring 501. It can absorb shock when engaged with.

The present invention is not limited to the above embodiment. In this embodiment, the concave portion may be formed in the leaf spring 501 and the convex portion may be formed in the holder 201.

(Third embodiment)

It demonstrates with reference to FIG. The difference between this embodiment and the second embodiment is the configuration of the holder lock mechanism, and the rest of the rest is the same. Therefore, the same parts as those in Fig. 12 showing the second embodiment use the same reference numerals, and redundant descriptions are omitted.

The figure shows a state in which the movable carrier 301 has not withdrawn from the recording medium.

The approximately T-shaped lock arm 705 made of an elastic material is opposed to the base 701 and the stopper surface 503 extending radially on the axis of rotation of the holder 421 and connected from the center to the end of the base 701. It is comprised by the arm apparatus 703, and is installed in the edge of the holder 421. As shown in FIG.

The lock arm 705 is attached to the holder 421 so that when the holder 421 is in the neutral position, the surface 703a facing the stopper surface 503 of the arm device 703 is approximately at the stopper surface 503. To be parallel.

In addition, at both ends of the surface 703a of the arm apparatus 703, there are protrusions 711 and protrusions 713 accessible to the stopper surface 503.

Hereinafter, the operation of this configuration will be described. From the state shown in the figure, the movable carrier 301 ascends and withdraws from the recording medium P. FIG. Then, the projection 711 and the projection 713 of the arm device 703 of the lock arm 705 contact the stopper surface 503 of the fixed carrier 201, and the holder 421 is fixed at the neutral position. The rotation of the holder 421 is prohibited.

According to the above configuration, the following effects are obtained.

(1) When the carrier 107 moves along the guide shaft 103 and the guide shaft 105 without printing on the recording medium P, the winding of the ink ribbon 111 is not performed. Even if the ink ribbon cassette 109 is an ink supply cassette, the ink is not oversupplied to the ink ribbon 111, and as a result, the printing ink density becomes constant.

When the carrier 107 moves along the guide shaft 103 and the guide shaft 105 without printing on the recording medium P, the winding of the ink ribbon 111 is not performed, and thus the energy of the apparatus can be stored. In addition, the durability of the ink ribbon winding mechanism is improved.

(2) Since the lock arm 705 is made of an elastic material, and the projection 711 and the projection 713 accessible to the stopper surface 503 are formed at both ends of the surface 703a of the arm device 703, When the movable carrier 301 is raised and the protrusion 711 and the protrusion 713 of the lock arm 705 contact the stopper surface 503, the shock is absorbed by the elastic deformation of the arm device.

The present invention is not limited to the above embodiment. Although in the above embodiment, the projections 711 and the projections 713 are formed on the lock arm 705, they may be formed on the stopper surface 503 of the fixed carrier 201. Alternatively, any one of the protrusion 711 and the protrusion 713 may be formed on the lock arm 705 and the other may be formed on the stopper surface 503 of the fixed carrier 201.

As described above, according to the present invention, when the carrier moves without printing, the holder is fixed by the holder lock means in a neutral position where the first satellite gear 451 and the second satellite gear 453 are not engaged with the winding means. It is possible to wind the ink ribbon. Thus, even if the ink ribbon cassette is an ink supply cassette, the ink supplied to the ink ribbon is not oversupplied, and the printing ink density is constant.

Further, according to the present invention, the holder lock means is provided with a convex portion formed on either the fixed carrier or the holder of the satellite gear mechanism, and formed on the other and engaged with the convex portion, and the holder is neutral when the movable carrier withdraws from the recording medium. Since it is a recess fixed in position, the holder lock means can be operated using a widely used movable mechanism of the movable carrier, resulting in a simple configuration.

The present invention relates to an ink ribbon winding mechanism for winding an ink ribbon in response to movement of a carrier, and to a printer device including such a mechanism, wherein the holder is moved to a neutral position by holder lock means when the carrier moves without printing. It is fixed, and the winding of the ink ribbon may not be performed, and the printing ink density may be constant without overfeeding the ink supplied to the ink ribbon.

In addition, the holder lock means of the present invention can be operated using a widely used movable mechanism of the movable carrier, so that the configuration can be simplified.

Claims (7)

A sun gear rotating in the front-rear direction in response to the movement of the carrier, a holder for press-contacting the sun gear, the holder rotatably positioned around the axis of rotation of the sun gear, and the sun gear rotatably positioned in the holder. A satellite gear mechanism comprising a first satellite gear meshing with the second satellite gear and a second satellite gear rotatably positioned in the holder and engaged with the sun gear; Winding means for engaging one of the first satellite gear or the second satellite gear of the satellite gear mechanism and driving the ink ribbon in a winding direction; And An ink ribbon winding an ink ribbon in response to movement of a carrier, comprising: a holder lock means for fixing the holder at a neutral position where the first satellite gear and the second satellite gear are not engaged with the winding means. Winding mechanism. The method of claim 1, The carrier Fixed carrier, and A movable carrier comprising said ink ribbon, said satellite gear mechanism and said winding mechanism and movable relative to said fixed carrier and capable of withdrawing from a record carrier, The holder lock means A convex portion formed in any one of the fixed carrier or the holder of the satellite gear mechanism; And And a concave portion formed on the other side, the concave portion holding the holder at the neutral position by engaging with the convex portion when the movable carrier is withdrawn from the recording medium. Winding ink ribbon winding mechanism. The method of claim 1, The carrier Fixed carrier, and A movable carrier comprising said ink ribbon, said satellite gear mechanism and said winding mechanism and movable relative to said fixed carrier and capable of withdrawing from a record carrier, The holder lock means A stopper surface formed on the fixed carrier; Move away from the holder of the satellite gear mechanism in a state where the movable carrier is not withdrawn and being pushed by the stopper surface when the movable carrier withdraws from the recording medium, and moving in the direction of the holder of the satellite gear mechanism Arm of carrier; Pushing means for pushing the arm in the direction of the stopper surface; A convex portion formed on one of the arms or a holder of the satellite gear mechanism; And And a concave portion formed on the other side, the concave portion holding the holder at the neutral position by engaging with the convex portion when the movable carrier is withdrawn from the recording medium. Winding ink ribbon winding mechanism. The method of claim 2 or 3, The convex portion is a V-shaped convex portion having a sharp side of the concave portion, and the concave portion is a V-shaped concave portion having a wide entrance, and an ink ribbon winding mechanism for winding an ink ribbon in response to movement of a carrier. The method of claim 1, The carrier Fixed carrier, and A movable carrier comprising said ink ribbon, said satellite gear mechanism and said winding mechanism and movable relative to said fixed carrier and withdrawing from a recording medium, The holder lock means A stopper surface formed on the fixed carrier; And And a plane formed in the holder, the plane being substantially parallel to the stopper surface when the holder is in the neutral position. The ink ribbon winding mechanism of claim 1, wherein the ink ribbon is wound in response to movement of the carrier. The method of claim 5, The plane has a central portion supported by the holder, and both ends are formed of free end elastic arms, and formed at one of an end portion of the elastic arm of the stopper face or an opposing portion of the elastic arm, and An ink ribbon winding mechanism for winding an ink ribbon in response to movement of a carrier, characterized by forming a contacting projection. A sun gear rotating in the front-rear direction in response to the movement of the carrier, a holder for press-contacting the sun gear, the holder rotatably positioned around the axis of rotation of the sun gear, and the sun gear rotatably positioned in the holder. A satellite gear mechanism comprising a first satellite gear meshing with the second satellite gear and a second satellite gear rotatably positioned in the holder and engaged with the sun gear; Winding means for engaging one of the first satellite gear or the second satellite gear of the satellite gear mechanism and driving the ink ribbon in a winding direction; And An ink ribbon winding an ink ribbon in response to movement of a carrier, comprising: a holder lock means for fixing the holder at a neutral position where the first satellite gear and the second satellite gear are not engaged with the winding means. A printer device comprising a winding mechanism.