JPH0333477Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an ink sheet roll used in a recording device having a cylindrical member for winding an ink sheet.

(Prior Art) Conventionally, there are reels of this type of ink sheet roll, such as those shown in FIGS. 8 to 10, for example. This reel 101 has a cylindrical member 102
and a flange member 103 fitted to both ends of the cylindrical member 102, and an ink sheet is wound around the cylindrical member 102 to form an ink sheet roll 10.
It has become 4. The flange member 103 of the reel 101 is connected to spindles 105 and 106, and the spindles 105 and 106 are pivotally supported by a frame 107 via a bracket 108. This flange member 103 has a shaft portion 103a.
The shaft portion 103a is connected to the spindle 10.
The spindles 105 and 106 are connected to each other by fitting into the recesses 105a and 106a of the spindles 105 and 106, respectively. One spindle 106 is fixed in the axial direction, and the other spindle 105
is pressed against the spindle 10 by a pressing member (not shown).
It is pressed in six directions.

A gear 109 for rotationally driving the reel 101 is fixed to the shaft end of the spindle 106, and the gear 109 is connected to a drive source (not shown). Further, as shown in FIG. 9, the spindle 106 is equipped with a protruding pin 106b for transmitting driving force to the reel 101. mated to.

As shown in FIG. 10b, a plurality of recesses 103b of the flange member 103 are provided in the circumferential direction via ribs 103c extending in the radial direction.
The protruding pin 106b of the spindle 106 is inserted into the recess 1.
03b, it contacts the rib 103c and transmits rotational force to the reel 101. The recess 103b is formed into a substantially fan-like shape to facilitate fitting of the protruding pin 106b.

However, reel 1 on which the ink sheet is wound
01, slide the spindle 105 in the direction of arrow A in FIG.
One flange member 103 of the spindle 106
Connect to. Next, by returning the spindle 105 by the pressing force of the pressing member, the spindle 105 is moved to the other flange member 10 of the reel 101.
Connect to 3.

To connect the flange member 103 to the spindle 106, as shown in FIG.
1 in the direction of arrow B, the shaft portion 103a of the flange member 103 is attached to the spindle 1.
The protruding pin 106b of the spindle 106 is supported in the recess 106a of the flange member 10.
It fits into the recess 103b of No.3.

(Problem to be solved by the invention) However, in the case of such a conventional example, the protruding pin 106b of the spindle 106 is connected to the flange member 10.
The rib 103 is fitted into the recess 103b of No. 3.
c and transmits the driving force to the reel 101. Therefore, when the reel 101 is set, the protruding pin 106b of the spindle 106 is not fitted into the recess 103b of the flange member 103 and comes into contact with the end surface of the rib 103c. However, there was a problem that the reel 101 could not be set smoothly in some cases.

In order to prevent this, when the protruding pin 106b hits the end surface of the rib 103c, the spindle 106 equipped with 106b and the reel 101 rotate relative to each other due to the pressing force of the pressing member, and the protruding pin 16b automatically rotates. However, in this case, a new problem arises in that the mechanism becomes complicated.

Further, the recess 103b of the flange member 103 is
The protruding pin 106b is formed to be large and provided with play so that it can be easily fitted into the protruding pin 106b. Therefore, if the protruding pin 106b is fitted into the recess 103b but not in contact with the rib 103c, there is a time delay in transmitting the driving force to the reel 101 until the protruding pin 106b contacts the rib 103c. There was a delay, and even when recording started, no tension was applied to the ink sheet, resulting in wrinkles and poor recording.

The present invention was devised to solve the problems of the prior art, and its purpose is to easily and accurately align the axis of the ink sheet roll when it is attached to the main body. At the same time, it is an object of the present invention to provide an ink sheet roll that can convey an ink sheet evenly and without skewing.

(Means for Solving the Problems) Therefore, in order to achieve the above object, the present invention provides a cylindrical member for winding an ink sheet;
a fitting part having a protruding part provided so as to protrude so as to fit with the cylindrical member without causing slip; and the cylindrical member, which fits with a slope of the fitting part on the apparatus main body side when attached to the apparatus main body. a fitting member provided at both ends of the cylindrical member, the fitting member having a slope that is inclined in the axial direction as it goes toward the cylindrical member; A driven gear for transmitting driving force.

(Example) The present invention will be explained below based on the illustrated example. FIG. 6 shows a facsimile device equipped with a thermal transfer recording device to which the present invention is applied.
and a reading means 3 on the left half of the figure.

First, prior to explaining the present invention, the overall structure of the facsimile device 1 will be explained.

The recording means 2 is equipped with a thermal recording head 4, which is connected to a head bracket 5.
The head bracket is attached to the recording frame 7 so as to be rotatable about the head bracket fulcrum 6. Further, the thermal recording head 4 is pressed by a head pressing spring 9 whose one end is fixed to the recording frame 7 so that the platen roller 8 is pressed against the thermal recording head 4.

On the other hand, the recording paper 1 stored in the recording paper holder 10
1 is recorded in the recording unit 12 while being in pressure contact with the ink sheet 13, and the platen roller 8 moves the arrow C
After recording is completed, the recording paper 11 is separated from the ink sheet 13 by a separation roller 14 held by a bracket (not shown) extending from the thermal recording head 4, and then separated from the ink sheet 13 by a cutter 15. Then, it is cut into a predetermined length and discharged from the main body 16. The recording paper 11 remaining in the main body 16 is returned to a predetermined position by the reverse rotation of the platen roller 8.
The platen roller 8 is driven by a motor (not shown).

An ink sheet frame 19 is attached to the recording frame 7 via a spring 18 fitted into a support rod 17.
is elastically attached, and the ink sheet 13 is held on the ink sheet frame 19.

The ink sheet 13 comes out from the reel 20 of this embodiment which will be described in detail later on the supply side, overlaps the recording paper 11 near the recording section 12, and is combined with the recording paper 11 by the platen roller 8 while being recorded in the recording section 12. The recording paper 11 is separated from the recording paper 11 by a separation roller 14, and then wound in the direction of arrow D on a reel 20 of this embodiment, which will also be described in detail later, on the winding side.

The reel 20 on the supply side is a motor (not shown).
is driven by a supply side gear 21 and a driven gear 22 integrally provided at the end of the reel 20, and the take-up reel 20 is driven by a take-up side gear 23 and a driven gear 22 by a motor (not shown). It is driven via a driven gear 22 that is integrally provided at the end of the reel 20. That is, a driven gear 22 that transmits driving force to the reel 20 is integrally provided at the end of the reel 20 around which the ink sheet 13 is wound. More specifically, the reel 20 is a cylindrical member 4
7 and flange members 48 and 49 fitted to both ends of this cylindrical member 47, and the driven gear 22 is provided integrally with this flange member 49.

During recording, back tension is applied to the reel 20 on the supply side to tension the ink sheet 13.
A front tension is applied to the take-up reel 20 to prevent the ink sheet 1 from being wrinkled. At this time, the reel 20 on the winding side winds up the ink sheet 13 while maintaining the front tension.

After recording, the recording paper 11 is returned to the predetermined position as described above, but the ink sheet 13 is
is rewound onto the reel 20 on the supply side by an amount equal to the unwinding length of . At this time, the reel 20 on the winding side is free in the unwinding direction by a one-way clutch (not shown).

A recording cover 25 is attached to the recording frame 7 and includes a document width guide 24 that is movable according to the width of the document. This recording frame 7 is the fulcrum 26
The recording paper 11 and the ink sheet 13 are attached to the main body 16 so that they can be expanded and expanded around the center, and the recording paper 11 and the ink sheet 13 can be easily replaced.

On the other hand, the reading means 3 is constructed as follows.

Original 27 guided by the original width guide 24
is separated into one sheet by the ADF feed section 28 and the ADF separation section 29, sent to the reading section 31 by a pair of document transport rollers 30, and discharged from the apparatus by a pair of document discharge rollers 32.

When the document 27 passes through the reading section 31, it is illuminated by a fluorescent lamp 33, and the light reflected by the document 27 is guided by a mirror 34 to a lens 35, where the light is focused. is converted into an electrical signal by the photoelectric conversion element 36. In the figure, numeral 37 indicates a power source for the entire device.

FIG. 7 shows the state of the facsimile apparatus when the recording paper 11 and ink sheet 13 are replaced. That is, by expanding the recording frame 7, the recording paper conveyance system and the ink sheet conveyance system are separated, and the ink sheet 13 can be attached to and detached from the recording frame 7 together with the reel 20 on the supply side or the reel 20 on the winding side. Therefore, the recording paper 11 can be taken in and taken out through the space created above the recording paper holder 10.

In the ink sheet conveyance system, the driven gear 22 is engaged with the supply side gear 21 and the take-up side gear 23, which transmit driving force to the supply side reel 20 and the take-up side reel 20, by the positioning pin 38. and notches 39 and 40 of the ink sheet frame 19
It is designed to be secured by the mating of the
Even if the recording frame 7 is opened and expanded due to replacement of the recording paper 11, etc., and the gears 21, 22, and 23 are disengaged,
The structure is such that when the recording frame 7 is closed, an appropriate mesh can be obtained. In the unlikely event that the tips of the gears touch each other, the spring 18 absorbs the displacement of the gear 22 floating, and the supply side gear 21 and the winding side gear 23 can be properly rotated if one of the gears rotates a little. A good fit can be obtained.

As shown in FIGS. 2 and 3, the recording frame 7 supports the ink sheet frame 19, and two spindles 42 and 43 are connected to the ink sheet frame 19 via a bracket 41.
Each pair is coaxially and rotatably supported. Tips 43a, 43 of these spindles 42, 43
A is formed with a tapered shape, that is, an inclined surface that is inclined in the axial direction as it goes toward the cylindrical member 47, in order to improve the operability during centering and fitting with the reel 20, which will be described later. There is. One spindle 43 is fixed in the axial direction, but the other spindle 42 is slidable in the axial direction, and this spindle 42 is constantly pressed in the direction of the other spindle 43 by a spring 44.
This pressing action causes the spindles 42 and 43 to hold the reel 20, so that the reel 20 will not come off even if tension is applied to the ink sheet 13. The spindle 42 slides in the direction of arrow F by rotating a lever 45 provided at one end in the direction of arrow E about a lever fulcrum 46 and bringing one end of the lever 45 into contact with the ink sheet frame 19. and stop.

By the way, the reel 20 of the ink sheet roll according to the present invention is configured as follows.

That is, as shown in FIG. 1, the reel 20 is made up of a cylindrical member 47 and flange members 48 and 49 fitted to both ends of the cylindrical member 47, and the reel 20 on the supply side has a roll. A shaped ink sheet 50 (FIG. 5) is held, and the ink sheet 13 of the rolled ink sheet 50 is wound onto the reel 20 on the winding side. The ink sheet 13 is then wound around the reel 20 to form an ink sheet roll.

As shown in FIG. 5, each of the flange members 48 and 49 has a shaft portion that is fitted into the cylindrical member 47, that is, a protrusion that is provided so as to fit into the cylindrical member 47 without slipping. Section 48
a, 49a and the inclined surfaces 42a, 43a at the tips of the spindles 42, 43, that is,
The cylindrical member 47 is provided with slopes 48b and 49b that are inclined toward the axial direction. Further, one flange member 49 is integrally provided with a driven gear 22 for transmitting driving force to the reel 20, as shown in FIG.

With the above configuration, the ink sheet roll of the present invention is used in the following manner in a facsimile machine which is an embodiment of the present invention. That is,
In the facsimile device 1, as shown in FIG. 7, the recording frame 7 is expanded and the ink sheet 1 is
3, the reel 20 on which the unused ink sheet 13 is wound is set on the supply side spindles 42 and 43 near the notch 39 of the ink sheet frame 19, and the ink sheet 13 is not wound. On the reel 20, spindles 42 and 43 on the winding side near the notch 40 are set.

To explain in more detail, when setting the reel 20,
As shown in FIG.
5 as a lever fulcrum 46 in the direction of arrow E, and slide the spindle 42 in the direction of arrow F to remove the reel 20 on which the unused ink sheet 13 is wound.
The recess or slope 49b of the flange member 49 is fitted into the slope 43a of the tip of the spindle 43 as shown in FIG. After that, align the recessed part, that is, the slope 48b of the other flange member 48 with the slope 42a of the tip of the spindle 42, and
By returning the spring 4 to the position shown (Fig. 2),
4, the slope 42a at the tip of the spindle 42 is fitted into the recess, that is, the slope 48b of the flange member 48, and the reel 20 is moved to the recording frame 7.
is set to .

Next, the ink sheet 13 on the supply side is wound onto the reel 20 on the take-up side, and the setting of the ink sheet 13 is completed.

Then, the recording frame 7 is closed as shown in FIG.
1 and the winding side gear 23. The supply side reel 20 and the take-up side reel 20 are rotationally driven via a supply side gear 21, a take-up side reel 23, and a driven gear 22, and the ink sheet 13 is applied with tension while being rotated by the take-up side reel 20. It is wound up.

When the use of one roll of the ink sheet 13 is completed, the used ink sheet 13 is wound onto the reel 20 on the winding side, and the reel 20 on the supply side
is empty. Used ink sheet 13
is discarded, and the empty supply reel 20 is used as the take-up reel 20. Incidentally, when the reel 20 is removed from the recording frame 7, the same procedure as above is used.

In the above explanation, the ink sheet used in a thermal transfer recording device is shown, but the ink sheet is not limited to this, and it goes without saying that the ink sheet can be an ink sheet used in any type of recording device. It is.

Further, in the thermal transfer recording apparatus of the illustrated embodiment, the reel of the ink sheet roll of the present invention is used as the reel on the supply side and the reel on the take-up side, but it may of course be used only as the reel on the take-up side. .

Further, in the illustrated embodiment, a case has been described in which the reel is formed from a separate cylindrical member and a flange member, but the cylindrical member and the flange member may be formed integrally.

As described above, this embodiment has the above-described structure and operation, and a driven gear that transmits driving force to the reel is integrally provided at the end of the reel around which the ink sheet is wound. When setting the ink sheet in the recording apparatus, there is no need to fit the protrusion and the recess for transmitting driving force as in the conventional case, and the reel can be set smoothly and the ink sheet can be easily replaced. Further, since the driving force is directly transmitted to the reel from the driven gear integrated with the end of the reel, it is possible to completely prevent a time delay from occurring in the rotational drive of the reel. Furthermore, since the driven gear is integrally provided, the number of parts can be reduced, making it possible to reduce costs.

(Effects of the invention) Since the present invention has fitting members configured as described above at both ends of the cylindrical member, the fitting members can be fitted to the cylindrical member without slipping. Further, since the ink sheet roll has a slope, the axis can be easily and accurately aligned when the ink sheet roll is loaded into the main body.

Furthermore, since the drive source on the main body side and the driven gear integrally provided on one of the fitting members mesh reliably, the ink sheet can be conveyed evenly and without being skewed.

[Brief explanation of drawings]

Figures 1 to 7 are related to the present invention,
Fig. 1 is a partially cutaway front view showing a reel of an ink sheet roll according to the present invention, Fig. 2 is a front view showing an ink sheet frame on which the reel is attached, Fig. 3 is a side view of the same, and Fig. 4 4a is a front view showing the flange member, FIG. 4b is a side view of the same, FIG. 5 is a partial sectional view showing the state in which the reel is attached, FIG. FIG. 7 is a longitudinal sectional view showing the state of the facsimile machine when replacing an ink sheet, FIGS. 8 to 10 show a conventional example, and FIG. 8 is a front view showing the state of use of a conventional reel. , FIG. 9 is a partial sectional view showing the reel when it is installed, FIG. 10a is a front view showing the flange member, and FIG. 10b is a side view of the same. Explanation of symbols, 13... Ink sheet, 20...
Reel, 22... Driven gear.

Claims (1)

[Claims for Utility Model Registration] (1) A cylindrical member for winding an ink sheet, a fitting portion having a protrusion provided so as to protrude and fit with the cylindrical member without causing slips; a slope inclined in the axial direction toward the cylindrical member, which fits into the slope of the fitting portion on the device main body side when attached to the device main body;
a fitting member provided at both ends of the cylindrical member; and a driven gear integrally provided on one side of the fitting member for transmitting driving force to the cylindrical member. Ink sheet roll used in recording devices. (2) The ink sheet roll according to claim 1, wherein the fitting portion is a flange member. (3) The ink sheet roll according to claim (1), wherein the recording device is a thermal transfer device, and the ink sheet roll is an ink sheet roll used in the thermal transfer recording device.