JP2012135931A - Ink ribbon cassette - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ink ribbon cassette that makes a user feels easy to carry, when the ink cassette is detached from a printer body, by miniaturizing the ink cassette body, and by eliminating a part exposed to an outer ink ribbon.SOLUTION: The ink ribbon cassette having a first bobbin around which the ink ribbon is wound and a second bobbin for winding the used ink bobbin includes a body part with the first and second bobbins therein and a cover member that is slidable with respect to the body part. The cover member includes a guide part that functions as a part of a travelling path of the ink ribbon. In the first position of the cover member, the body part and the cover member are in a closed state. In the second position of the cover member, the ink ribbon guide part provided with the cover member withdraws the ink ribbon from the body part, and makes the ink ribbon be exposed on a certain amount by the slide operation from the first position to the second position.

Description

  The present invention relates to an ink ribbon cassette that is a consumable material for a printer that prints on a recording material such as recording paper based on image information.

  2. Description of the Related Art Conventionally, as one of printer apparatuses, there is a thermal transfer recording type printer apparatus that records an image by thermally transferring ink of an ink ribbon onto a sheet. Further, as one of the configurations of the printer apparatus, the ink that is a consumable is supplied to the user in a cassette in which both ends of the ink ribbon are wound around two bobbins and the two bobbins and the ink ribbon are housed in a frame. Generally, ink is supplied to the printer main body by loading the ink cassette into the printer apparatus.

  In the ink cassette having the above configuration, a structure as shown in FIG. 25 is known as a known example (see Patent Document 1).

  A conventional ink cassette will be described with reference to FIG. FIG. 25 is a sectional side view of a conventional ink cassette. The conventional ink cassette 110 has a main body portion 112 in which a hollow portion that accommodates the ink ribbon 111 is formed. The main body portion 112 has a supply bobbin 113 and a take-up bobbin 114 wound around both ends of the ink ribbon 111. Is housed. When the printer body is loaded, the supply bobbin 113 and the take-up bobbin 114 are joined to a winding mechanism (not shown) provided in the printer body and rotated to perform the winding operation of the ink ribbon 111. The ink ribbon 111 wound around the supply bobbin 113 is drawn out of the main body from an opening 117 formed in the main body 112, and the ink ribbon 111 is guided to the exposed portion 116. In the exposed portion 116, heat is applied to the ink ribbon 111 by a thermal head (not shown), the ink is transferred to the printing medium by a predetermined printing operation, and travels in the direction of arrow L. The used ink ribbon 111 that has been thermally transferred in the exposed portion 116 is folded upward in the figure by a ribbon folding roller 119, guided onto the sliding contact surface 115a of the ribbon guide portion 115, and travels in the direction of arrow M. In addition, the take-up bobbin 114 is rotated in the direction of arrow N by a ribbon take-up mechanism provided in the printer body, and the ink ribbon 111 is taken up by the take-up bobbin 114.

JP 2001-162848 A

  However, in the configuration as described above, even when the ink cassette 110 is detached from the printer main body, the ribbon guide portion is always in a protruding state, so that the ink cassette 110 main body itself is large, which is inconvenient for the user to carry. It is. Further, since the ink ribbon 111 is always exposed to the outside at the exposed portion 116, the user easily touches the exposed portion 116 accidentally, and the ink ribbon 111 is easily damaged at the exposed portion 116. In addition, foreign matter such as dust is likely to adhere to the exposed portion 116 of the ink ribbon 111 even when the ink cassette 110 is stored when not in use. When printing is performed with the ink ribbon 111 being damaged or having foreign matter attached to the printer body, there is a problem that printing defects such as wrinkles occur on the printed matter.

  The present invention has been made to solve the above-mentioned problems, and its object is to reduce the size of the ink cassette main body when the ink cassette is removed from the printer main body and to eliminate the exposed portion of the ink ribbon to the outside. The present invention provides an ink ribbon cassette that is easy for a user to carry.

In order to achieve the above object, the first invention according to the present application is:
In an ink ribbon cassette having a first bobbin around which an ink ribbon is wound and a second bobbin for winding up a used ink ribbon, a main body having the first bobbin and the second bobbin therein, and the main body And a lid member slidable, and the lid member includes a guide portion that bears a part of the travel path of the ink ribbon, and the main body portion and the lid member are in a closed state at a first position of the lid member. In the second position of the lid member, the ink ribbon guide part provided in the lid member pulls out the ink ribbon from the main body part by the sliding operation from the first position to the second position, and the ink ribbon Is exposed to a certain amount.

The second invention according to this application is:
A part of the lid member is provided with an uneven part, the cover member is engaged with the second bobbin provided with the uneven part, and the cover member is moved from the second position to the first position. In the sliding operation, the second bobbin performs a rotation operation and has a structure for winding up the ink ribbon.
The third invention related to this application is:
In the process of the lid member from the second position to the first position, the ink ribbon is placed on the second bobbin between the concave and convex portions of the lid member and the concave and convex portions of the second bobbin. An ink ribbon take-up mechanism for taking up the ink ribbon without loosening between the second bobbin and the first bobbin, and the ink ribbon is stretched on at least one of the gears in the gear train. In this state, an ink ribbon loosening prevention mechanism that idles between the gears is provided.

The fourth invention related to this application is:
The uneven portion is configured on the inner surface side of the lid member.

  According to the present invention, the ink cassette is pulled out only when the ink cassette is loaded into the printer body, so that the ink cassette can be reduced in size, and the ink ribbon portion can be prevented from adhering foreign matter such as dust from the outside. I can do it.

The perspective view which shows the time of the expansion of the cover member regarding this invention Sectional side view which shows the time of expansion of the cover member regarding this invention A perspective view of the housing Perspective view of lid member Side sectional view of the lid member Diagram showing supply bobbin Diagram showing the winding bobbin Diagram showing the rotation absorption mechanism The figure which shows a slide member and a reverse rotation prevention mechanism Perspective view of assembling each part into the housing The figure which showed the gear at the time of a lid member carrying out closing operation Enlarged view showing the gear when the lid member closes Side sectional view explaining the state in which the rotation absorbing mechanism functions when the lid member performs the closing operation The enlarged view explaining the state in which the rotation absorption mechanism functions when the lid member performs the closing operation Sectional side view which shows the time of closure of the cover member regarding this invention The figure which shows the relationship of the gear at the time of a cover member closing The figure which shows the relationship of the gear at the time of moving a slide member at the time of a cover member closing. Side sectional view showing the gear operation when the lid member moves from the closed state to the expanded state Side sectional view of a printer loaded with the drawer type ink cassette of the present invention Side sectional view of the printer when the drawer type ink cassette of the present invention is loaded. Top view of the drawer ink cassette before loading in the printer Diagram showing gear train before loading in printer Top view of the drawer ink cassette after loading in the printer Diagram showing gear train after loading in printer Side sectional view of a conventional ink cassette

  Hereinafter, embodiments of the drawer type ink cassette according to the present invention will be described.

[Example 1]
FIG. 1 to FIG. 24 are diagrams of a schematic configuration of a pull-out ink cassette to which the present invention is applied.

  FIG. 1 is a perspective view showing when the lid member according to the present invention is expanded, and FIG. 2 is a side sectional view showing when the lid member according to the present invention is expanded. As shown in FIG. 1, the drawer-type ink cassette 1 of this embodiment is configured with a casing 10 and a lid member 20 as main appearance portions. As specific internal components, as shown in FIG. 2, the housing 10 holds a supply bobbin 30 and a take-up bobbin 40 wound around both ends of the ink ribbon 2 while maintaining a constant axis. , A gear 43 formed on the take-up bobbin 40, a gear 70 that is rotatably held by a slide member 80 that is rotatably engaged with the housing 10, and a rotation absorber that is rotatably held by the housing 10. The gear train is formed by the mechanism 60, and the casing 10 further includes a roller 50 that is held freely rotatable. The ink ribbon 2 wound around the supply bobbin 30 is extended from the roller 50 in one direction of the housing 10, and the surface of the ink ribbon 2 is exposed to the outside from the exposed portion 5 formed between the housing 10 and the lid member 20. Is done. Further, the ink ribbon 2 is folded by rollers 51 and 52 provided on the lid member 20 and wound by a winding bobbin 40.

  Next, the configuration of the housing 10 will be described with reference to FIG. FIG. 3 is a perspective view of the housing. The housing 10 is composed of a housing upper side 11 and a housing lower side 12, which are each formed by molding a material such as resin. A long hole 13 serving as a guide for a protruding portion 25 of the lid member 20 described later is opened on the housing upper side 11. The long hole 13 is also opened on the opposite surface of the upper side 11 of the housing. When the lid member 20 is moved from the expanded state to the closed state, the projection 25 of the lid member 20 follows the guide of the long hole 13. Moving. In addition, click portions 13 a and 13 b are provided at both ends of the long hole 13. The click portions 13a and 13b are formed slightly narrower than the diameter of the projection portion 25. The projection portion 25 moves on the long hole 13, and the lid portion 20 is pushed by the click portions 13a and 13b. The portion 25 is configured to be held at the end of the long hole 16. Further, the lid member upper side 11 has a configuration in which a hole 14a for holding the rotation absorbing mechanism 60 is freely opened.

  The housing lower side 12 is formed with bearings 16c and 16d for holding the supply bobbin 30 freely and bearings 16a and 16b for holding the winding bobbin 40 freely. In addition, an opening 18 for inserting and holding the slide member 80 is formed on the lower side 12 of the housing. Further, the rollers 50 are rotatably held, and holes 14b and 14c for inserting both ends of the rollers 50 are opened. In addition, a convex portion 15 for locking the rotation of a supply bobbin 40, which will be described later, is formed on the lower side 12 of the housing adjacent to the bearing 16c. Bosses 17a, 17b, 17c, and 17d are provided at the corners of the lower side 12 of the case, and the case is formed by press-fitting into a recess of the upper side 11 (not shown) formed in pairs with these. 10 is constituted.

  Next, the configuration of the lid member 20 will be described with reference to FIGS. 4 and 5. 4 is a perspective view of the lid member, and FIG. 5 is a side sectional view of the lid member. The lid member 20 is formed of a material such as resin. On the side surface of the lid member 20, a protruding portion 25 that engages with the long hole 13 provided in the upper side 11 of the housing is formed. The protrusions 25 are also formed on the opposite surface of the lid member 20 and move along the guides in the long holes 13 on the upper side 11 of the casing. The lid member 20 is provided with receiving portions 21 and 22 for holding the rollers 51 and 52. The receiving portions 21 and 22 are also provided on the opposite surface of the lid member 20 and hold both ends of the rollers 51 and 52 so as to freely rotate. Further, a rack portion 24 for engaging with the gear portion of the rotation absorbing mechanism 60 is provided on one side of the lid member 20.

  Next, the configuration of the supply bobbin 30 will be described with reference to FIG. The supply bobbin 30 has a shaft portion 31a and a shaft portion 31b at the other end with the first ribbon winding portion 32 as the center. The shaft portion 31a and the shaft portion 31b are rotatably held by a receiving portion 16c and a receiving portion 16d provided on the lower side 12 of the casing, respectively. Further, a lock portion 33 that engages with the convex portion 15 provided on the housing lower side 12 is formed on the shaft portion 31a side. Further, a connecting portion 34 for attaching a connecting member 90 for connecting to a winding bobbin 40 described later is formed on the shaft portion 31a side.

  Next, the configuration of the winding bobbin 40 will be described with reference to FIG. The winding bobbin 30 has a shaft portion 41 a at one end of the second ribbon winding portion 42. A gear 43 is press-fitted and held on the winding bobbin 40 at the opposite end of the shaft 41a. Further, a printer engaging portion 44 is formed at the opposite end of the shaft portion 41a to be engaged when loaded into a printer main body 94, which will be described later, and a pin 46 is press-fitted into a resin component constituting the shaft portion 41b. The reverse end portion of the pin 46 is press-fitted into the central portion of the gear 43 described above to constitute the winding bobbin 40. The shaft portion 41a and the shaft portion 41b are rotatably held by a receiving portion 16a and a receiving portion 16b provided on the lower side 12 of the casing, respectively. A connecting portion 45 for attaching a connecting member 90 for connecting to a supply bobbin 30 described later is formed on the shaft portion 41a side.

  Next, the rotation absorbing mechanism 60 will be described with reference to FIG. As shown in FIG. 8A, the rotation absorbing mechanism 60 is composed of two gear portions, a first gear portion 62 and a second gear portion 63, with a rotation absorbing member 65 interposed therebetween. A shaft 61 is provided at the center of the gear portion, and the shaft 61 is rotatably held by the housing 10 by inserting the shaft 61 into the hole 14 a of the housing upper side 11.

  The rotation absorbing member 65 is made of a felt material. The rotation absorbing member 65 is provided between the first gear portion 62 and the second gear portion 63, and the hole 67 is formed in the hole 67 as shown in FIG. By inserting and holding the pin 64 via the spring 66, a certain frictional force is generated between the first gear portion 62, the second gear portion 63, and the rotation absorbing member 65 in the rotational direction. Yes. Therefore, the rotational force of the first gear portion 62 is transmitted to the second gear portion 63 with the rotation absorbing member 65 interposed therebetween. However, when a load exceeding a certain level is applied to one of the gears, The idle operation is performed between the gears.

  The first gear portion 62 meshes with the rack portion 24 provided on the lid member 20 described above, and the second gear portion 63 engages with the gear 70 to construct a gear train. Further, during the closing operation of the lid member 20 described later, the first gear portion 62 of the rotation absorbing mechanism 60 is rotated in the direction of arrow A in FIG. By sandwiching the second gear portion 63 in the direction of arrow A, the rotational force is transmitted to the gear 70 in the rear row.

  When a rotational force is applied to the first gear portion 62 and the rotation absorbing mechanism 60 is subjected to a load greater than or equal to the rotation direction of the second gear portion 63, the rotation absorbing mechanism 60 is shown in FIG. Thus, only the first gear portion 62 rotates in the direction of arrow A, and the second gear portion 63 does not rotate, and the idle operation is performed between the first gear 62 and the second gear 63. In the rotation absorbing mechanism 60 of the present embodiment, the above-described idle state does not occur when the rotational operation is applied to the gear 70 and the winding bobbin 40 arranged on the second gear portion 63 side, and the gear 70 and the winding bobbin 40 are not generated. In addition, the second gear portion 63 is set to idle when a further rotational load is generated.

  Next, the slide member 80 constituting the gear 70 will be described with reference to FIG. 9A is an assembly view of the slide member 80, FIG. 9B is an exploded perspective view, and FIG. 9C is a view for explaining the rotation direction of the gear 70. FIG. The slide member 80 has a shaft hole 89 that holds the gear 70 in a freely rotatable manner, and an elastic force between the shaft 87 that allows the reverse rotation prevention mechanism 83 to be freely inserted and held, and between the housing lower side 12 and the slide member 80. The projection 82 is provided with a spring 82 for attaching the slider 82, and the knob 84 is provided for the user to operate the slide member 80.

  The gear 70 passes through the shaft 71 in a shaft hole 89 provided in the slide member 80, and a pin 86 is pressed into the gear 70 with the slide member 80 interposed therebetween, so that the gear 70 is prevented from coming off and is held freely. An anti-reverse mechanism 83 is rotatably held on the shaft 87 of the slide member 80. The tip of the reverse rotation prevention mechanism 83 is formed in an inclined shape, and as shown in FIG. 9C, the front end portion 83a of the reverse rotation prevention mechanism 83 enters the recess 73 of the gear 70, and the gear 70 is moved by the torsion spring 85. Always kept energized. When the gear 70 rotates in the direction of arrow B, the inclined portion 83b of the reverse rotation prevention mechanism 87 rotates in the opposite direction to the gear 70 around the shaft 87 while rubbing against the convex portion 72 of the gear 70. When the distal end portion 83 a of the reverse rotation preventing mechanism 83 exceeds the convex portion 72 of the gear 70, the distal end portion 83 a is returned to the concave portion 73 of the gear 70 by the elastic force of the torsion spring 85. When the gear 70 tries to rotate in the direction opposite to the arrow B direction, the tip 83a of the reverse rotation prevention mechanism 83 contacts the recess 73 of the gear 70, and the reverse rotation prevention mechanism 83 does not rotate. That is, the gear 70 cannot be rotated in the direction opposite to the arrow B direction. In addition, a spring 82 is provided between the slide member 80 and the housing lower side 12 through a protrusion 88, and the projection 81 is held in the opening 18 on the housing lower side 12. Is configured such that a force is always applied to the inside of the housing 10 and is held at a fixed location.

  Next, components incorporated in the housing 10 will be described with reference to FIG. FIG. 10 is a perspective view in which the components are assembled in the housing. First, the slide member 80 including the gear 70 described above is attached to the opening 18 provided on the lower side 12 of the casing with the spring 82 interposed therebetween. The slide member 80 is held on the lower side 12 of the casing at a predetermined location by the elastic force of the spring 82 and the catching of the convex portion 81 provided on the slide member 80.

  Next, the assembly configuration of the supply bobbin 30 and the take-up bobbin 40 will be described. The springs 91a and 92b are attached to the shaft end portions of the supply bobbin 30 and the take-up bobbin 40, respectively, and the shaft portions 31a and 31b of the supply bobbin 30 are mounted on the bearings 16c and 16d in a state where the connection member 90 is assembled in the connection portions 34 and 45. The shaft portions 41a and 41b of the winding bobbin 40 are assembled into the bearings 16a and 16b. By providing the springs 91a and 91b on each bobbin described above, each bobbin is always in a state where an elastic force is applied in the direction of arrow E in FIG. Further, as described above, the lock portion 33 is provided at the end of the supply bobbin 30, and the protrusion 15 provided on the housing lower side 12 and the lock portion 33 are engaged with each other by the elastic force of the spring 91a. The supply bobbin 30 is held in a non-rotatable state.

  As described above, the first roller 50 is rotatably held by inserting each end portion into the holes 14a and 14b provided on the lower side 12 of the housing.

  In the state of the above configuration, the housing 10 is press-fitted through the bosses 17a, 17b, 17c, and 17d provided at the corners of the housing upper side 11 and the housing lower side 12 in which the rotation absorbing mechanism 60 is incorporated. Composed.

  Next, the operation of the lid member 20 in the drawer-type ink cassette 1 according to this embodiment shifting from the expanded state to the closed state will be described with reference to FIGS. As described above, since the supply bobbin 30 is held in a state in which the lock portion 33 and the convex portion 15 provided on the lower side 12 of the housing mesh with each other and cannot rotate, the winding operation of the ink ribbon 2 is performed. This is done on the take-out bobbin 40 side. When the lid member 20 is in the expanded state, the rack portion 24 provided on the lid member 20 is in a state of being engaged with the first gear portion 62 of the rotation absorbing mechanism 60. Further, the second gear portion 63 of the rotation absorbing mechanism 60 and the gear 70 are brought into mesh with each other, and the gear 70 constitutes a meshing gear train with the gear 43 provided on the winding bobbin 40.

  When the lid member 20 is closed, first, the projection 25 of the lid member 20 described above is removed from the click part 13a at the end of the long hole 13 provided in the upper side 12 of the casing. Press and move in the direction of arrow D. Thereafter, the lid member 20 is moved in the direction of arrow D to drive the rack 24 and the first gear portion 62 of the rotation absorbing mechanism 60, and the rotation absorbing mechanism 60 rotates in the direction of arrow A in FIG. I do. Therefore, the gear 70 meshed with the second gear 63 rotates in the direction of arrow B, and the gear 43 of the winding bobbin 40 meshed with the gear 70 rotates in the direction of arrow C. In other words, by moving the lid member 20 in the direction of arrow D, the winding bobbin 40 rotates in the direction of arrow C via the gear train described above, and this rotation action causes the second ribbon winding of the winding bobbin 40 to rotate. The ink ribbon 2 is wound up at the portion 42.

  Next, the rotation absorbing mechanism 60 during the winding operation of the ink ribbon 2 in the closing operation of the lid member 20 described above will be described with reference to FIGS. 13 and 14. In the state of FIG. 13, the winding member 20 is moved in the direction of arrow D in FIG. 13 so that the winding bobbin 40 is rotated by the gear train described above and the ink ribbon 2 is wound up. When the ink ribbon 2 is moved in the direction D, the ink ribbon 2 is stretched on the supply bobbin 30, the rollers 50, 51, 52 and the take-up bobbin 40 during the closing operation of the lid member 20. That is, the ink ribbon 2 is pulled in the direction of arrow F in FIG. 13 during the closing operation of the lid member 20, and the rotational load of the gear 43 increases. As described above, the rotation absorbing mechanism 60 is set so that the second gear portion 63 rotates idly when a rotational load is applied in addition to the gear 70 and the winding bobbin 40. In the closing operation of the lid member 20, only the first gear portion 62 that meshes with the rack portion 24 rotates in the direction of arrow A, and the rotation absorbing member 65 causes idling, and the second gear portion 63, the gear 70, and the gear 43. Rotational power is not transmitted to.

  As described above, as the closing operation is performed from the time when the lid member 20 is expanded, the ink ribbon 2 is wound by the rotation of the winding bobbin 40 and the lid member 20 is closed.

  Next, the operation of the lid member 20 in the drawer-type ink cassette 1 of this embodiment shifting from the closed time to the expanded time will be described with reference to FIGS. FIG. 15 shows a state in which the closing operation of the lid member 20 is completed and the ink ribbon 2 is not exposed to the outside. In this closed state, the winding operation of the ink ribbon 2 by the closing operation of the lid member 20 described above is performed. Yes.

  The expanding operation from the closed state of the lid member 20 is performed by moving in the direction of arrow I in FIG. During this movement, since the rack portion 24 and the rotation absorbing mechanism 60 are engaged, the rotation absorbing mechanism 60 is given a rotational force in the arrow X direction. Further, in the rotational operation of the rotation absorbing mechanism 60, a rotational force is applied to the gear 70 in the direction of arrow Y in FIG. 15, and the gear 70 applies a rotational force to the winding bobbin 40 in the direction of arrow Z. Here, the gear 70 is in a state in which the rotation of the gear 70 in the arrow Y direction is restricted by the action of the reverse rotation prevention mechanism 23 described above. That is, when the lid member 20 performs the expanding operation from the closed state, the rotation of the gear 70 is restricted in the direction of the arrow Y. Therefore, the rotation absorbing mechanism 60 and the winding bobbin 40 of the gear train are also restricted from rotating simultaneously. The lid member 20 cannot perform the expanding operation. In other words, the operation is locked to the expansion operation of the lid member 20.

  A configuration for unlocking the expanding operation of the lid member 20 will be described with reference to FIGS. 16 and 17. A slide member 80 is held on the gear constituting surface side of the housing 10 in a state of protruding from the housing 10. As described above, the spring 82 is inserted into the protrusion 88 of the slide member 80, and an elastic force is applied in the direction of arrow G in FIG. When unlocking the expansion operation of the lid member 20, the knob portion 84 of the slide member 80 protruding from the housing 10 is moved in the direction of arrow H in FIG. By the movement of the slide member 80, the gear 70 attached to the slide member 80 moves in the direction of arrow H in FIG. 17B, and the gear 70 is configured with the rotation absorbing mechanism 60 and the take-up bobbin 40 described above. The gear train is disengaged and temporarily retracts from the gear train. In the retracted state of the gear 70, the restriction of the rotation operation of the rotation absorbing mechanism 60 in the arrow X direction and the rotation operation of the winding bobbin 40 in the arrow Z direction are temporarily released as shown in FIG. The lid member 20 can be moved in the direction of arrow I in FIG.

  In the above configuration, the lid member 20 is pulled out in the direction of arrow I, and the expansion operation is completed by pulling out the lid member 20 to the predetermined position described above.

  Next, loading of the drawer type ink cassette 1 of the present invention into the printer apparatus will be described with reference to FIGS. FIG. 19 is a side sectional view of a printer apparatus in which the drawer type ink cassette of the present invention is loaded. FIG. 20 is a side sectional view of the printer body after the drawer type ink cassette of the present invention is loaded. An opening 94 a is provided on the front surface of the printer main body 94, and a paper tray 101 loaded with a paper 102 as a printing medium is mounted on the printer main body 94 in the opening 94 a. The paper 102 loaded in the paper tray 101 is conveyed into the printer main body 94 when a paper feeding operation is given to the paper feeding roller 99 by a paper feeding mechanism (not shown). The paper 102 after being fed is gripped by the pinch roller 97 and the grip roller 98 and then heated to the ink ribbon 2 from the thermal head 95 disposed on the platen roller 96 while being conveyed, and the image is transferred to the paper 102. Is done. The paper 102 that has finished a predetermined printing operation is conveyed by a paper discharge roller 100 and a paper supply roller 99, and is discharged and stacked on a paper tray 101.

  A winding roller 103 is configured in the printing mechanism. The take-up roller 103 is provided with an engaging portion 103a that meshes with the printer engaging portion 44 of the take-up bobbin 40 that is configured in the above-described drawer-type ink cassette 1. After the drawer-type ink cassette 1 is loaded into the printer main body 94, the winding bobbin 40 of the drawer-type ink cassette 1 rotates by applying a rotational force to the winding roller 103 from the printing mechanism, and the ink ribbon 2 It is the structure which winds up.

  The drawer-type ink cassette 1 is loaded from the side of the printer main body 94. The thermal head 95 inside the printer main body 94 is configured to be positioned above the exposed portion 5 of the ink ribbon 2 configured when the above-described drawer-type ink cassette 1 is expanded. The draw-out ink cassette 1 is completely loaded when the printer engaging portion 44 of the take-up roller 103 and the engaging portion 103a of the take-up bobbin 40 are engaged with each other, and the supply bobbin 30 side which is the rear end of the draw-out ink cassette 1 is The printer body 94 is held in a state of protruding outward from an opening 94b provided in the printer main body 94.

  Next, the gear train before and after the drawer-type ink cassette 1 is loaded into the printer main body 94 will be described with reference to FIGS. FIG. 21 is a top sectional view of the drawn ink cassette before being loaded into the printer body, and FIG. 22 is a view showing a gear train before being loaded into the printer body. As described above, the supply bobbin 30 and the take-up bobbin 40 in the drawer-type ink cassette 1 are connected via the connecting member 90, and are held in a state where the elastic force is urged by the springs 91a and 91b. In the drawer-type ink cassette 1, the rotation operation of the supply bobbin 30 is restricted by the lock portion 33 of the supply bobbin 30 and the convex portion 15 provided on the housing 10.

  FIG. 23 is a top sectional view of the drawn ink cassette after being loaded into the printer body, and FIG. 24 is a view showing a gear train before being loaded into the printer body. When the pull-out ink cassette 1 is loaded into the printer main body 94, the take-up bobbin 40 of the pull-out ink cassette 1 is pushed in the direction of arrow I in FIG. By the pushing operation of the winding bobbin 40, the winding bobbin 40 and the supply bobbin 30 are moved in the directions of arrows J and K via the connecting member 90, respectively. By moving the supply bobbin 30 in the direction of arrow K, the engagement between the lock portion 33 and the convex portion 15 is released, and the rotation operation restriction is released. Accordingly, when the printer main body 94 is loaded in the drawer-type ink cassette 1 of this embodiment, the supply bobbin 30 is in a rotatable state.

  Further, the winding bobbin 40 moves in the direction of arrow J in FIG. 24 by the pushing operation of the winding roller described above, so that the gear 43 configured in the winding bobbin 40 is disengaged from the gear 70. It has become. By retracting the gear 43 from the above gear train, the drawer-type ink cassette 1 rotates the supply bobbin 40 without applying a rotational force to the above gear train when the printer main body 94 is loaded. ing

DESCRIPTION OF SYMBOLS 1 ... Pull-out type ink cassette 2 ... Ink ribbon 5 ... Exposed part 10 ... Case 11 ... Case upper side 12 ... Case lower side 13 ... Long hole 13a, 13b ... click part 14 ... hole 15 ... convex parts 16a, 16b, 16c, 16d ... receiving parts 17a, 17b, 17c, 17d ... boss 18 ... opening 20 ... lid Member 21 ... Receiving portion 22 ... Receiving portion 23 ... Shaft 24 ... Rack portion 25 ... Protrusion 30 ... Supply bobbin 31 ... Shaft portion 32 ... First ribbon Winding part 33 ... Locking part 34 ... Connecting part 40 ... Winding bobbin 41 ... Shaft part 42 ... Second ribbon winding part 43 ... Gear 44 ... Printer engaging part 45... Connection portion 46... Pin portion 50, 51, 52... Roller 60. Gear part 63 ... Second gear part 64 ... Pin 65 ... Rotation absorbing member 66 ... Spring 67 ... Hole 70 ... Gear 71 ... Shaft 72 ... Convex part 73 ... Recess 80 ... Slide member 81 ... Protrusion 82 ... Spring 83a ... Tip 83b ... Inclined part 84 ... Thumb part 85 ... Torsion spring 86 ... Pin 87 ... Shaft 88 ... Projection 89 ... Shaft hole 90 ... Connecting member 91 ... Spring 94 ... Printer body 94a, 94b ... Opening 95 ... Thermal head 96 ..Platen roller 97 ... Pinch roller 98 ... Grip roller 99 ... Paper feed roller 100 ... Paper discharge roller 101 ... Paper feed tray 102 ... Paper 103 ... Winding roller 103a ... engagement part

Claims (4)

In an ink ribbon cassette having a first bobbin wrapped with an ink ribbon and a second bobbin that winds up a used ink ribbon,
A main body having the first bobbin and the second bobbin inside;
A lid member slidable with the body portion;
The lid member includes a guide portion that bears a part of the travel path of the ink ribbon,
In the first position of the lid member, the main body and the lid member are in a closed state,
In the second position of the lid member, by the sliding operation from the first position to the second position,
An ink ribbon guide provided in the lid member pulls out the ink ribbon from the main body,
An ink ribbon cassette, wherein a predetermined amount of the ink ribbon is exposed. A part of the lid member is provided with a concavo-convex part
The lid member is engaged with the second bobbin provided with an uneven portion,
In the sliding operation from the second position to the first position, the lid member,
The second bobbin rotates and
The ink ribbon cassette according to claim 1, further comprising a structure for winding the ink ribbon. In the process of the lid member from the second position to the first position,
Between the uneven portion of the lid member and the uneven portion of the second bobbin,
In the second bobbin, between the second bobbin and the first bobbin of the ink ribbon,
An ink ribbon winding mechanism for winding the ink ribbon without loosening,
2. The ink ribbon cassette according to claim 1, further comprising an ink ribbon loosening prevention mechanism that idles between the gears when the ink ribbon is stretched on at least one of the gears in the gear train. The ink ribbon cassette according to claim 1, wherein the uneven portion is configured on an inner surface side of the lid member.