JPS6099692A - Ink ribbon cassette supporting device - Google Patents

Abstract

PURPOSE:To prevent a ribbon from being caught when fitting a cassette, by a method wherein a printing head is provided on the left side of a cassette, the cassette is fitted to a guide pin provided in proximity to a printing head and a positioning projection provided on the side opposite to the pin, and is positioned by engaging to a spring for pressing it forward. CONSTITUTION:A front face of a cassette casing 1 is provided with a recessed part 7 for receiving the printing head 6 on the left side thereof, and an opening 8 is provided in proximity to the recessed part 7. An opening 9 into which the positioning projection 21 of a carriage 13 is to be fitted is provided on the opposite side of the opening 8. The guide pin 18 to be fitted into the opening 8 is provided on the carriage 13 in proximity to the printing head 6. Accordingly, the cassette casing 1 can be accurately positioned on the carriage 13 in the state of being free of any chattering.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to the structure of a cassette support device for removably mounting an ink ribbon cassette in a predetermined position of a carrier.

[Prior art]

In a thermal transfer printer, a tape-shaped ink ribbon is sandwiched between the print head and a cartridge, and the printing operation is performed while feeding the ink ribbon according to the movement of a carriage that supports the print head. As a means for feeding the ink ribbon, an ink ribbon cassette mounted on a carriage is used.

In addition, the ink ribbon cassette has four parts on the front surface for holding the print head, and also feeds the ink ribbon into the openings of the four parts. It is inserted into the space on the back side of the IJ gun and installed on the gear resolution.

However, conventionally, this type of cassette is 1+),' ii
As a means for determining and mounting the cassette, a method has generally been adopted in which a protrusion on the carriage is fitted into a plurality of positioning holes at the bottom of the cassette.

However, such a conventional ink ribbon skein.

In the support device, when the cassette is installed, the ink ribbon in the recess comes into contact with the print head, causing misalignment, and when inserting or feeding the paper, the paper becomes garbled. This has disadvantages in that the winding state is disturbed by the winding, and problems such as an increase in ribbon winding load, winding performance, and problems such as +7 and yen breakage 111i are likely to occur.

However, with conventional structures that simply fit into bottles or protrusions, there is play and inaccurate positioning, making it impossible to position reliably in all directions: left and right, front and back, and up and down. It also had the disadvantage of being prone to malfunctions.

〔the purpose〕

An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art, and to reduce the friction when loading a cassette. can eliminate the possibility of online citations,
The objective is to provide an ink support ha that can be accurately positioned without play.

[Summary of the invention]

The h1 print head of the present invention is installed on the left side 11i11 of the cassette, and the area near the print head is the idbin and the opposite side.
The above objective is achieved by a configuration in which a spring is engaged with the positioning protrusion on the side (right side) and presses forward.

〔Example〕

The present invention will be described in detail below with reference to FIGS. 1 to 11.

Figures 1 to 3 show a first cassette support device according to the present invention.
Increment +l related to the embodiment? FIG.

In these figures, a cassette case 1 is provided with a supply reel 3 for an ink layer 2 and a take-up reel 4, and the ribbon is fed by driving the waist take-up reel in the direction indicated by the arrow. A case 5 is detachably attached to the upper surface of the cassette case l. It should be noted that when printing 1110, the ribbon cassette of Q and Jin moves in the direction of arrow B (to the right) together with the carriage.

On the front left side 1) of the cassette case 1, four parts 7 for receiving the print head 6 are formed, and the inkritian 2
is sent through the entire open end of the recess 7.

In use, the print head 6 is received in a position that allows the ink printer 2 to be pressed against a sheet (not shown) from the back side. As shown in the figure, the ink litia 2 is sent from the supply reel 3 to the take-up reel 4 along a predetermined route by a plurality of guide parts in the cassette case 1, and is sent through the outside of the case at the four parts 7 along the way. There is.

An opening 8 that is long in the left-right direction is formed in the cassette case 1 near the recess 7 (and therefore near the print head 6). A holder of a carriage, which will be described later, is inserted into the opening 8 of the holder. Further, an opening is formed in the front right side of the cassette case 1, that is, on the opposite side of the opening 80, into which a positioning projection of a carriage, which will be described later, is fitted.

The illustrated ink wagon cassette is of a type that can be used with a 10ft end detector, and there is an opening D11 in the front corner of the cassette case 1 to receive the lithium end detector 10 fixed to the carriage. is formed.

1IJ1, f9 approximately in the center of the rear surface of the cassette case I.
A chevron-shaped protrusion 12 is formed with which the pressing spring described above abuts and engages. In the illustrated example, the protrusion 12 and 14 are divided into two parts, left and right, each having upper and lower inclined surfaces representing a predetermined angle.

Figures 4 to 6 show the cassette support 4-IH,a according to the present invention.
Figure 1 shows a carriage according to the first embodiment in the i'4 position.

In these figures, the carriage 13 is driven in the left-right direction along the guide 114, and when it moves in the printing direction B, it drives the print head 6 and prints on VLC (not shown). .

As shown in the figure, the print head 6 is rotatably supported at the front left side of the printer 13 (11 position) via a 111115, and is positioned between the rad-up position shown in the figure and the paper pressure contact position via the ink ribbon. I!M 1liJ1 between.

The cassette shown in FIGS. 1 to 3 is mounted on the upper WI 16 of the carriage 13, and the position corresponding to the take-up reel 4 of the cassette is ft", and 11 is attached to the reel to drive it. A ribbon drive j1υ]tiη1j17 is provided for this purpose.

A slot bin 18, which fits into the opening 8 of the cassette case 1, is fixed to the fold of the print head 6 on the carriage 113. As shown in the figure, this printer has a tenor j part 19 for guiding and a stepped part 20 for front and rear positioning, and the height of the tip thereof is approximately the same as the height of the tip of the print head 6. The position of the guide bin 18 is such that when the stepped portion 20 of the guide bin comes into contact with the rear end surface of the opening 8 of the cassette case, the ink cartridge is in a predetermined position. J loincloth has been added to support it.

A positioning protrusion 21 is provided on the front right side of the carriage 13 to fit into the opening 9 of the cassette case when the cassette is installed. This sudden 71'i:! 21t, as shown in the figure, has a guide chi4 part 22 and a stepped part 23 for determining the anterior iron position ljl, and also has a horizontal length of the opening 9 with respect to a horizontal length of the protrusion 21. The width is selected to be such that the cassette can be loosely fitted in a small gap, that is, the cassette can be positioned in the left-right direction.

The front 511 opening of the tstl right corner of the carriage 13 is located at the position corresponding to J. end test 11
de::'r 1 (+ is fixed.

At the rear of carriage 13, approximately in the center, is a sumo wrestler.

1, f and press r to the chevron-shaped protrusion 12 of case 1.
A spring 24 is attached to the
The upper inclined surface 25 for guiding and the lower inclined part 26 for positioning the front and back and the lower position are fixed to the rear when the cassette is installed. 1: Selected to press the cassette forward with a predetermined spring force.

FIGS. 7 to 9 are views showing the ink ribbon cassettes shown in FIGS. 1 to 3 in color layers on the carriages shown in FIGS. 4 to 6, and corresponding parts are designated by the same reference numerals. Displayed.

When installing the ribbon cassette, first insert the opening 8 on the left side 11111 of the cassette case 1 into the guide bin 18.
Then, the opening 9 of the right side 9i1 of the cassette case 1 is extended to the positioning protrusion 21 to perform positioning in the left-right direction. Next, while pressing the chevron-shaped protrusion 12 on the rear side of the repern cassette against the spring 240 guide portion 25, the rear part of the cassette is pushed in against the pressing force of the spring 24. At the same time, the front part of the cassette is also pushed into the seating position by the previous day +2 against the id pin 18 and the positioning protrusion i1'821.

With the above operations, the ribbon cassette is placed in the installed state as shown in FIGS.
.
The contact force between the top and the 1llllI inclined surfaces causes the reparation? The connector cassette is pressed forward and downward. Note that the lateral position of the cassette is determined by the positioning protrusion 21 as described above.

In this way, the repern cassette is accurately positioned and installed in all directions: left and right, front and rear, and downward.

1), 4? The cassette can be removed by simply reversing the installation procedure described above (110).

Furthermore, in the above embodiment, the height of the id pin 18 is set to be approximately the same as the height of the tip of the print head 6, so if the opening 8 and the id pin 18 are misaligned when installing the cassette, the bottom of the cassette will It collides with the bin and cannot be lowered below the level p, Y shown by the dotted chain line in Figure 8. Therefore, in combination with the fact that the guide bin 18 is sunk near the print head 6, it is possible to prevent the possibility of contact between the ink ribbon 2 and the print head 6 when the cassette is installed, and thus the possibility of contact between the ink ribbon 2 and the print head 6 can be prevented. It is possible to eliminate misalignment and loosening of the rod due to contact.

10 and 11 are views showing a second embodiment of the ink ribbon cassette support device according to the present invention in mounting configurations fj and IT.

The second example is Ribbon End Test 11 (:・, J
01: Using one body as a positioning protrusion 1. A (Remove the positioning protrusion 21 and the opening 1 in Example 11) and install the ribbon end detector 10 in an orientation advantageous for positioning the front and back at the same position II.1.
The structure is different from that of the embodiment. The 1m part is actually -
Since both have the same structure, corresponding parts will be indicated with the same symbol and their explanation will be omitted.

In addition, in this example, l? A V i<- origin part 27 is provided on the rear surface of the end detector 10, and a first real nozzle 1 is provided below it.
On the other hand, surfaces 28 for longitudinal and vertical positioning, which correspond to the stepped portions 23 of the positioning protrusions 21 in the example, are formed.

Also, for the same reason as the abutment in the first embodiment, the left and right length of the No. 1 entrance 9 is d? The length of the end detector 10 is increased by a minute gap, and the dimensions are selected to enable the left and right positioning of the cassette.

According to the second embodiment, the same effects as those of the first embodiment can be obtained, and the positioning protrusion 21 can be omitted to simplify the structure.

In the above embodiments, the height of the idle bin 18 was set to be approximately the same as the height of the tip of the print head 6, but this may be any height that can prevent the resen 2 from contacting the print head by 15V4. An appropriate height can be selected by considering the structure and dimensions of related parts.

Further, although the above embodiments have been described with reference to the case where the IJ terminal detector IO is provided, the present invention can be implemented with or without the IJ terminal detector.

〔effect〕

As is clear from the above description, according to the present invention, it is possible to easily and accurately determine the position of the cassette 11"1" relative to the carriage. An anchorlet support device is provided.

[Brief explanation of drawings]

FIG. 1 shows a portion 16 of an ink ribbon cassette according to a first example of the cassette support device N of the present invention. A cross-sectional plan view, Figure 2 is an oblique view of Figure 1! 3 is a partial sectional view along bond III-III in FIG. 1, and FIG.
FIG. 5 is a sectional view taken along line >:B v -v in FIG. 4, and FIG.
Figure 7 is a partial cross-sectional view taken along line Vl-Vl in Figure 1, and a partially cut-away plane showing the Hp cassette being mounted and supported on the carriage in Figure 4. Figure, Figure 8 is +! S 7 is a cross-sectional view taken along line -■ in Figure 7, Figure 9 is a partial cross-sectional view taken along +11' mound IX-IX in Figure 7, and Figure 10 is a second practical example of this light. Partially cutaway plan view showing the cassette supporting device related to the cassette set, No. 11
The figure is a partial sectional view taken along line M-XT in FIG. 10. 1...Cassette case, 2...Incline sj, 6
...Print head, 8...Opening (for Id pin fitting)
, 9...Opening (for fitting positioning protrusion), 10...I
J, Y-end detector, 12... chevron-shaped protrusion, 13
... Carriage, 18... Guide bin, 21... Positioning protrusion, 24... Spring. li1 Figure 11! 2 Figure m3 Figure IN 4 Figure 115 Figure Ditch 7 Figure 8 Figure II Figure 10 lK11 Figure

Claims (3)

[Claims] (1) In a support device for removably mounting an ink ribbon cassette on a carriage, a print head is provided on the left side of the cassette, and the cassette is provided near the print head, but is fitted into an inner bin and a positioning protrusion provided on the right side. An ink cartridge cassette support device whose 4" feature is to engage and position a spring that presses forward. (2) The increment bank cassette support device according to claim 1, characterized in that the positioning protrusion is a p-end detector. (3) The ink bin cassette support device 14 according to claim 1, wherein the height of the bin is approximately the same as the height of the tip of the print head.