JP3751100B2 - Ink ribbon roll set position restriction device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an ink ribbon roll set position regulating device, and more particularly to an ink ribbon roll set position regulating device capable of setting and regulating an ink ribbon loaded in a thermal printer or the like at an arbitrary position.
[0002]
[Prior art]
In general, a thermal printer transfers a printing medium such as a label or a tag and an ink ribbon between a platen roller and a thermal head and prints predetermined printing information on the printing medium. The ink ribbon is generally supplied as a roll.
[0003]
There are several types of print media and ink ribbons to be loaded into the thermal printer, depending on the type and amount of information to be printed. May be moved to one side of the wall on the back side, or may be positioned at the center in the transfer direction.
[0004]
In particular, when setting an ink ribbon roll, both the ink ribbon roll supply shaft and the ink ribbon take-up shaft are required unlike the printing medium. It is required to set these at appropriate positions easily and simultaneously by a single operation.
[0005]
[Problems to be solved by the invention]
The present invention has been considered in view of the above-mentioned problems. When setting the ink ribbon roll to the printer, the ink ribbon roll is operated once at the required positions of the ink ribbon roll supply shaft and the ink ribbon take-up shaft. It is an object of the present invention to provide an ink ribbon roll set position regulating device that can be set simultaneously.
[0006]
Another object of the present invention is to provide an ink ribbon roll set position regulating device capable of regulating the set position of ink ribbon rolls having different widths by a simple operation each time.
[0007]
Another object of the present invention is to provide an ink ribbon roll setting position regulating device capable of easily setting an ink ribbon roll particularly at the center in the transport direction.
[0008]
[Means for Solving the Problems]
That is, the present invention is configured to move and set the roll position regulating plate along the axial direction of the ink ribbon roll supply shaft and the ink ribbon take-up shaft, and to provide a lever plate that can slide along the roll position regulating plate. And the position of the roll position regulating plate with respect to the guide shaft is focused on the lever plate side. The ink ribbon roll that sets the ink ribbon roll on the ink ribbon roll supply shaft and the ink ribbon take-up shaft provided on the printer frame is used. A set position restricting device, which is provided on the printer frame, is provided with a guide shaft in which a set position restricting rack is formed along the axial direction thereof, is movably provided along the guide shaft, and is supplied with the ink ribbon roll. Insert the shaft and the ink ribbon take-up shaft. And a roll position regulating plate are, with slidable along the roll position regulating plate, have a, and lever plate with a detachably an engaging and disengaging pawl portion in the set position regulating rack of the guide shaft The guide shaft is an ink ribbon roll set position regulating device provided between the ink ribbon roll supply shaft and the ink ribbon take-up shaft .
[0009]
The guide shaft, by Rukoto provided it between the ink ribbon roll supply shaft and the ink ribbon winding shaft, reducing the size of the stabilization and the lever plate of the movement of the roll position regulating plate and the lever plate Can do.
Moreover, it can be easily set in a state in which the position in the axial direction is restricted simultaneously and in parallel by a single operation.
[0010]
The roll position restricting plate and the lever plate have a window part and a claw part that can be engaged and disengaged with each other, thereby simplifying the assembling operation and configuration and ensuring the sliding of the lever plate with respect to the roll position restricting plate. can do.
[0011]
The lever plate can be moved and returned with respect to the roll position restricting plate so that the engagement / disengagement claw portion is detached from and engaged with the set position restricting rack of the guide shaft. Only the roll position regulating plate can be moved and fixed.
[0012]
In the ink ribbon roll set position restriction device according to the present invention, the roll position restriction plate can be moved along the axial direction of the ink ribbon roll supply shaft and the ink ribbon take-up shaft, and the guide shaft set position restriction rack Since the lever plate having the engaging / disengaging claw portion is provided, the roll is operated by operating the lever plate, that is, in a state where the engaging / disengaging claw portion is detached from the set position regulating rack of the guide shaft. The regulating plate can be moved along the axial direction of the ink ribbon roll supply shaft and the ink ribbon take-up shaft.
If the engagement / disengagement claw portion of the lever plate is engaged with the set position restricting rack of the guide shaft at a predetermined setting position of the ink ribbon roll, the roll restricting plate is fixed at this position and comes into contact with the roll restricting plate. Thus, an ink ribbon roll can be set.
[0013]
Therefore, the ink ribbon roll to be loaded can be set to the ink ribbon roll supply shaft and the ink ribbon take-up shaft at the same time in a single operation and in parallel with its axial position regulated. Even when the width of the ink ribbon roll is different, the set position regulation state can be easily changed.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Next, an ink ribbon roll set position regulating apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 to 11 by taking a thermal printer 1 equipped with the apparatus as an example.
FIG. 1 is a schematic front view of the thermal printer 1 as viewed from the downstream side of the print medium P and the ink ribbon R. FIG. 2 is a schematic side view of the thermal printer 1. The thermal printer 1 includes a printer frame 2 and a thermal head. 3, a platen roller 4, an ink ribbon roll supply shaft 5 and an ink ribbon take-up shaft 6, a print medium guide adjusting mechanism 7, and an ink ribbon roll set position regulating device 8.
[0015]
The printer frame 2 supports a thermal head 3, a platen roller 4, an ink ribbon roll supply shaft 5 and an ink ribbon take-up shaft 6, a print medium guide adjustment mechanism 7, and an ink ribbon roll set position regulating device 8. The print medium P and the ink ribbon R are sandwiched and transferred between the head 3 and the platen roller 4 and predetermined print information is printed.
[0016]
The ink ribbon roll supply shaft 5 and the ink ribbon take-up shaft 6 are provided on the printer frame 2 in a cantilevered vertical manner and in parallel with each other as shown in FIG. The roll R is fed out, and after printing on the thermal head 3 and the platen roller 4, the roll R is separated from the print medium P and wound around the ink ribbon winding shaft 6.
[0017]
The print medium guide adjusting mechanism 7 adjusts the width of the print medium P and guides the inside of an appropriate passage. However, any mechanism can be adopted for this configuration.
[0018]
The ink ribbon roll set position restriction device 8 according to the present invention has a pair of upper and lower guide shafts 9, a roll position restriction plate 10, and a lever plate 11.
[0019]
The pair of guide shafts 9 are provided in a cantilevered manner perpendicular to the printer frame 2 and in parallel with each other between the ink ribbon roll supply shaft 5 and the ink ribbon take-up shaft 6, and along the axial direction thereof. A flat guide portion 12 is formed on the upper surface, and a set position regulating rack 13 is formed on the lower surface.
The flat guide portion 12 is provided with a set position scale 14 indicating a set restriction position of the ink ribbon R (ink ribbon roll).
[0020]
The roll position regulating plate 10 is made of, for example, a synthetic resin, and is provided so as to be movable along the guide shaft 9, and the supply shaft fitting insertion hole 15 into which the ink ribbon roll supply shaft 5 is inserted and the ink ribbon winding. A take-up shaft fitting hole 16 into which the take-up shaft 6 is inserted is formed, and therefore, the take-up shaft can be moved along the ink ribbon roll supply shaft 5 and the ink ribbon take-up shaft 6.
A circular supply side contact plate 17 and a take-up side contact plate 18 that directly contact the side surface of the roll of the ink ribbon R are provided on the surface side of the roll position regulating plate 10.
[0021]
3 is a back view as seen from the back side of the roll position regulating plate 10 (the side opposite to the ink ribbon R), and FIG. 4 is a sectional view taken along line IV-IV in FIG. A peripheral rib 19 is formed at the peripheral edge at a predetermined height (depth) and the inside thereof is used as a lever plate housing portion 20. Further, the roll position regulating plate 10 is provided with a supply shaft fitting insertion hole 15 and a winding shaft fitting. In addition to the insertion hole 16, the guide shaft fitting insertion hole 21 of the guide shaft 9, a pair (two pairs of upper and lower) through windows 22 on the left and right of the guide shaft fitting insertion hole 21, and the upper and lower sides facing the through window 22, respectively. A pair of engaging claws 23 and 24 are formed.
In addition, the guide cylinder part 25 which can extend the guide shaft fitting insertion hole 21 to the surface side is projected and formed so that the movement of the roll position regulating plate 10 along the guide shaft 9 can be stabilized.
[0022]
5 is a rear view of the lever plate 11 viewed from the rear side (the side opposite to the ink ribbon R), FIG. 6 is a sectional view taken along line VI-VI in FIG. 5, and FIG. 7 is a line VII-VII in FIG. 8 is a cross-sectional view taken along the line VIII-VIII of FIG. 5. The lever plate 11 is made of, for example, synthetic resin, and a peripheral rib 26 is provided at a predetermined height (depth) on the rectangular periphery. ) So that when the lever plate 11 is accommodated in the roll position regulating plate 10, the height of the lever plate 11 is substantially the same as or slightly lower than that of the peripheral rib 19. And engaging leaf springs 28 are integrally formed on the lower side thereof.
[0023]
Further, the inner center upper and lower parts surrounded by the peripheral rib 26 are formed with a circular part having the same diameter as the guide shaft fitting insertion hole 21 and a rectangular guide shaft fitting insertion hole 29 at the lower part thereof. An engaging claw 30 is formed facing the lower side.
As will be described later, the engaging claw portion 30 is engaged with and disengaged from the set position regulating rack 13 of the guide shaft 9 by moving the lever plate 11 up and down in the drawing with respect to the roll position regulating plate 10.
[0024]
In particular, as shown in FIGS. 5, 6, and 8, a pair of upper and lower engagement windows are provided on the left and right sides of the guide shaft fitting insertion holes 29 of the lever plate 11 at positions facing the engagement claw portions 23 of the roll position regulating plate 10. 31, a pair of upper and lower engagement windows 32 is formed on the peripheral rib 26 at a position facing the engagement claw portion 24, and the engagement claw portions 23 and 24 of the roll position regulating plate 10 can be engaged and disengaged.
[0025]
FIG. 9 is a rear view when the lever plate 11 is assembled to the roll position regulating plate 10, and the sliding surface 33 (FIGS. 6, 7, and 8) of the lever plate 11 is placed on the lever plate of the roll position regulating plate 10. The engagement claw portion 23 of the roll position regulating plate 10 is fitted into the engagement window 31 of the lever plate 11 and the engagement claw portion 24 is made to face the engagement window 32 while being adjusted to the accommodating portion 20.
In this state, the guide shaft fitting insertion hole 21 of the roll position regulating plate 10 is slightly shifted leftward with respect to the guide shaft fitting insertion hole 29 of the lever plate 11.
[0026]
FIG. 10 shows that the lever plate 11 is moved in the left direction in the drawing with respect to the roll position restricting plate 10 from the state of FIG. 9, the engaging claw 23 is the engaging window 31, and the engaging claw 24 is the engaging window. 32 is a rear view showing a state in which the lever plate 11 is engaged with each other. In this state, the engagement claw portion 30 of the lever plate 11 is engaged with the set position regulating rack 13 of the guide shaft 9.
Further, the guide shaft fitting insertion hole 21 of the roll position regulating plate 10 has the same relative position in the left-right direction with respect to the guide shaft fitting insertion hole 29 of the lever plate 11.
[0027]
FIG. 11 is a rear view showing a state in which the engagement / disengagement lever 27 of the lever plate 11 is pushed downward from the state shown in FIG. 10. By this pushing operation, the engagement claw portion 23 is moved to the engagement window 31. In addition, the engaging claw portion 30 of the lever plate 11 moves downward with respect to the guide shaft fitting insertion hole 21 while the engaging claw portion 24 is engaged with the engaging window 32, and the guide shaft fitting insertion is performed. The guide shaft 9 can be inserted and inserted through the hole 21 and the guide shaft insertion hole 29, and the entire roll position regulating plate 10 and the lever plate 11 are moved in the axial direction along the guide shaft 9 while being pushed. It becomes possible.
[0028]
That is, the roll position restricting plate 10 and the lever plate 11 are fixed at predetermined positions of the guide shaft 9 in the state of FIG. 10, and the roll position restricting plate 10 and the lever plate 11 are movable along the guide shaft 9 in the state of FIG. It becomes.
[0029]
In the thermal printer 1 or the ink ribbon roll set position regulating device 8 having such a configuration, the print medium guide adjusting mechanism 7 is adjusted according to the width of the print medium P, and the ink ribbon roll is set according to the width of the ink ribbon R. The position restricting device 8 is operated.
That is, while the lever 27 for engaging and disengaging the lever plate 11 is pushed downward in FIG. 1, the relative position between the roll position restricting plate 10 and the lever plate 11 is as shown in FIG. The engagement of the guide shaft 9 with the set position restricting rack 13 is released, and the roll position restricting plate 10 and the lever plate 11 are movable in the axial direction of the guide shaft 9.
When the distal end portion of the guide cylinder portion 25 in the roll position restricting plate 10 is aligned with the set position scale 14 and the engaging lever 27 is released, the lever plate 11 is moved against the roll position restricting plate 10 by the urging force of the engaging leaf spring 28. As a result, the engagement claw portion 30 and the set position regulating rack 13 are returned to the engaged state.
[0030]
Accordingly, the roll position regulating plate 10 and the lever plate 11, or the supply side contact plate 17 and the take-up side contact plate 18 come into contact with the roll of the ink ribbon R, and the ink ribbon roll supply shaft 5 and the ink ribbon take-up shaft 6 are brought into contact. The position in the axial direction is restricted, and this can be set at a position corresponding to the width of the ink ribbon R.
[0031]
In order to change the positions of the roll position regulating plate 10 and the lever plate 11, it is only necessary to push and move the engagement / disengagement lever 27, so that the ink ribbon to the ink ribbon roll supply shaft 5 and the ink ribbon take-up shaft 6 is moved. R can be set in one operation at the same time and with a very simple and simple operation.
[0032]
【The invention's effect】
As described above, according to the present invention, the roll position regulating plate and the lever plate that move along the guide shaft are provided, and the setting position of the ink ribbon roll is regulated by the roll position regulating plate. The ink ribbon roll supply shaft and the ink ribbon take-up shaft can be easily and simultaneously set at predetermined axial positions.
[Brief description of the drawings]
FIG. 1 is a schematic front view of a thermal printer 1 equipped with an ink ribbon roll set position regulating device 8 according to an embodiment of the present invention as viewed from the downstream side of a print medium P and an ink ribbon R. FIG.
FIG. 2 is a schematic side view of the same.
3 is a back view of the roll position regulating plate 10 as viewed from the back side (the side opposite to the ink ribbon R). FIG.
4 is a cross-sectional view taken along the line IV-IV in FIG. 3;
FIG. 5 is a back view of the lever plate 11 as viewed from the back side (the side opposite to the ink ribbon R).
6 is a cross-sectional view taken along line VI-VI in FIG.
7 is a cross-sectional view taken along line VII-VII in FIG.
8 is a cross-sectional view taken along line VIII-VIII in FIG.
FIG. 9 is a rear view when the lever plate 11 is assembled to the roll position regulating plate 10 in the same manner.
FIG. 10 shows that the lever plate 11 is moved to the left in the drawing with respect to the roll position regulating plate 10 from the state shown in FIG. 9 so that the engaging claw portion 23 engages with the engaging window 31 and the engaging claw portion 24 engages. It is a back view which shows the state each engaged with the window 32. FIG.
11 is a back view showing a state in which the engagement / disengagement lever 27 of the lever plate 11 is pushed downward from the state of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Thermal printer 2 Printer frame 3 Thermal head 4 Platen roller 5 Ink ribbon roll supply shaft 6 Ink ribbon take-up shaft 7 Print medium guide adjustment mechanism 8 Ink ribbon roll set position regulating device in thermal printer 1 (Embodiment)
9 A pair of upper and lower guide shafts 10 Roll position restricting plate 11 Lever plate 12 Flat guide portion 13 of guide shaft 9 Set position restricting rack 14 of guide shaft 9 Set position scale 15 of guide shaft 9 Supply shaft fitting insertion hole 16 Take-up shaft Insertion hole 17 Supply side contact plate 18 Take-up side contact plate 19 Peripheral rib 20 Lever plate accommodating portion 21 A pair of upper and lower guide shaft insertion holes 22 Two pairs of through windows 23 A pair of upper and lower engagement claws 24 Engaging claw portion 25 A pair of upper and lower guide tube portions 26 A peripheral rib 27 A lever 28 for engagement / disengagement A plate spring 29 for engagement A pair of upper and lower guide shaft fitting holes 30 A pair of upper and lower engagement claw portions 30
31 A pair of upper and lower engagement windows 31
32 A pair of upper and lower engaging windows 32
33 Sliding surface P of lever plate 11 Printing medium R such as label or tag Ink ribbon (ink ribbon roll) of printing medium P

Claims (3)

An ink ribbon roll set position regulating device for setting an ink ribbon roll on an ink ribbon roll supply shaft and an ink ribbon take-up shaft provided on a printer frame,
A guide shaft that is provided in the printer frame and that forms a set position regulating rack along the axial direction thereof;
A roll position regulating plate that is provided so as to be movable along the guide shaft, and in which the ink ribbon roll supply shaft and the ink ribbon take-up shaft are fitted,
As well as a slidable along the roll position regulating plate, have a, and lever plate with a detachably an engaging and disengaging pawl portion in the set position regulating rack of said guide shaft,
The ink ribbon roll set position regulating apparatus , wherein the guide shaft is provided between the ink ribbon roll supply shaft and the ink ribbon take-up shaft .   The ink ribbon roll set position restricting device according to claim 1, wherein the roll position restricting plate and the lever plate have a window part and a claw part that can be engaged and disengaged with each other.   The lever plate is configured to be movable and returnable with respect to the roll position restricting plate so that the engaging / disengaging claw portion is detached and engaged with the set position restricting rack of the guide shaft. Item 2. An ink ribbon roll set position regulating device according to Item 1.

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