JP3378864B2 - Ink sheet set - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink sheet set for use in an image forming apparatus such as a printer or a facsimile machine.

[0002]

2. Description of the Related Art When a thermal printer is used to print on recording paper such as plain paper, an ink ribbon cartridge is usually used because of easy replacement and easy handling. And if the thermal printer is a line printer,
A wide ink sheet is used. A conventional ink sheet cartridge of this type is, for example, an actual flat plate 6-8174.
As disclosed in Japanese Patent Laid-Open No. 9-193732 and Japanese Patent Laid-Open No. 10-193732, since the ink sheet is exchanged with respect to the cartridge body, the ink sheet supply side spool and the take-up side spool can be rotatably supported. It was also configured to be removable.

Further, conventionally, one side of the supply side spool and the take-up side spool is provided with a gear portion for transmitting power from the main body side of the image forming apparatus to rotate each spool. As a so-called torque transmission part for winding the ink sheet while applying a proper tension, a notch groove that opens at one end of a core tube that winds the ink sheet is provided, and a spool having a gear part on the drive side. Is provided with an engagement projection that fits in the cutout groove, and the engagement projection is set in the cutout groove. Then, an ink sheet cartridge is incorporated so that the gear portion meshes with a transmission portion (gear) on the image forming apparatus main body side.

[0004]

By the way, the required maximum torque changes depending on the thickness, width and sheet material of the ink sheet to be used. However, if the inner diameter or outer diameter of the core tube is changed every time the size or sheet material is changed, the diameter of the portion of the spool side of the ink sheet cartridge that fits into the inner diameter of the core tube must be changed. Therefore, there is a problem that the manufacturing cost becomes high.

[0005]

The present invention has been proposed in view of the above-mentioned conventional problems, and torque transmission is achieved even if the diameter of the core tube is changed according to the thickness and width of the ink sheet to be supplied, the sheet material, and the like. It is an object of the present invention to provide an ink sheet set capable of reliably transmitting the power transmitted from the main body side to the core tube with a simple configuration.

[0007]

In order to achieve the above object, the invention described in claim 1 is a supply side core tube and a winding side core tube, and the core tube wound around these core tubes. In an ink sheet set consisting of an ink sheet having a width dimension substantially equal to the dimension between both ends of the core tube, an engagement protrusion that engages with a notch formed at the end of the winding side core tube is formed. An intermediate adapter having a tubular portion that fits into an inner diameter portion of the winding-side core pipe is provided, and the engagement protrusion is in a state in which an engagement protrusion of the intermediate adapter is engaged with a cutout portion of the winding-side core pipe. Is configured to fit within the width dimension of the ink sheet wound on the winding side core tube,
Configured as power from the main body is directly transmitted to the take-up core tube via the intermediate adapter, Inkushi
It is removably attached to the cartridge .

According to a second aspect of the present invention, in the ink sheet set according to the first aspect, a ridge is formed on the outer peripheral surface of the cylindrical portion of the intermediate adapter.

According to a third aspect of the invention, there is provided an ink sheet set which is mounted on an ink sheet cartridge in which one of the take-up side spools is formed in a side plate such that it cannot be removed. Side core tubes, an ink sheet wound around those core tubes and having a width dimension substantially equal to the dimension between both ends of the winding side core tube, and a notch formed at the end of the winding side core tube An intermediate adapter formed with an engagement protrusion that engages with a portion, and the engagement protrusion of the intermediate adapter is engaged with the cutout portion of the winding-side core tube. It is configured to fit within the width dimension of the ink sheet wound on the core tube, and the power from the winding side spool is directly transmitted to the winding side core tube via the intermediate adapter. , The ink c Replaceable cartridge capable of instrumentation
It is something to wear .

Further, the invention according to claim 4 is the ink sheet set according to claim 3, wherein the spool is mounted on both sides of the other side of the winding side core tube and the supply side core tube. It is mounted on the ink sheet cartridge.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Next, preferred embodiments of the present invention will be specifically described with reference to the drawings.

FIG. 1 is a side sectional view of a facsimile machine 1 in which an ink sheet cartridge 20 is mounted, and FIG. 2 is an enlarged side sectional view of a main part of a set portion of the ink sheet cartridge 20.
3 is a plan view of the ink sheet cartridge 20, FIG. 4 is a perspective view of the ink sheet cartridge 20, FIG. 8 is an exploded perspective view of components of the ink sheet cartridge, and FIG. 9 is a perspective view of a spool connecting portion on the winding side. .

First, the structure of the facsimile apparatus 1 as an image forming apparatus will be briefly described. The facsimile apparatus 1 according to the present embodiment reads an image or the like from the document 8 and
The image data is transmitted as facsimile data to another facsimile apparatus via a communication line such as a telephone line, and at the same time, the facsimile data transmitted from another facsimile apparatus is received via a communication line such as a telephone line to receive the recording paper 4. In addition to the function as a normal facsimile machine to form the image, it receives print data transmitted from a personal computer, word processor, etc. via a printer cable or wirelessly such as infrared rays, and forms an image in accordance with the data. It has a function as a printer that operates.

A receiver (not shown) is arranged on one side of the main body case 2 of the facsimile apparatus 1. An upper cover body 6 covering the upper surface of the main body case 2 having an open upper surface is pivotally attached to the upper rear end of the main body case 2 so as to be vertically rotatable about a rotation fulcrum 6a at the rear end. An operation panel 3 having a key switch 3a and a liquid crystal display device 3b is provided on the front side of the upper surface of the upper cover body 6. The operation panel 3 is also configured so that the front side thereof can be opened and rotated upward in order to remove the original document 8 when the original document 8 is not properly fed. Further, at the rear of the upper surface of the main body case 2, there is provided a paper feed table 5 for stacking and placing the recording papers 4 in a vertically inclined state so as to be rotatable with respect to the rear part of the upper cover body 6. A document table 7 is detachably attached to the upper and lower midway portions of the upper surface of the main body case 2.

Inside the main body case 2, below the operation panel 3, a pair of feed rollers 9 for conveying the original 8 from the original table 7, a contact image scanner unit (CIS) 10 and its reading. A document pressing body 11 and a paper discharge roller pair 12 arranged on the upper side of the section are arranged.

Inside the main body case 2 below the paper feed tray 5, a paper feed roller 15 for conveying the recording papers 4 from the paper feed tray 5 one by one and a spring for biasing the upper peripheral surface thereof. The sheet feeding unit 14 including the separated pad 16 and the like is provided.

Below the paper feeding unit 14, a roller-shaped platen 17 as a printing unit, a thermal head 22 on a printing table 19 biased by a spring 18 toward the lower surface of the platen 17, and An accommodating portion 13 for an ink sheet cartridge 20 which is arranged so as to straddle the print table 19 in the front-rear direction is arranged (see FIG. 1).

In the ink sheet cartridge 20 in the accommodating portion 13, the supply side sheet spool 25 for the ink sheet 21 is arranged on the rear side of the main body case 2, and the take-up side sheet spool 26 is on the front side of the main body case 2. The supply side seat spool 25 side is arranged at a high position and the winding side seat spool 26 side is arranged at a low position so as to be inclined forward (hip-up shape). Therefore, the storage unit 1
The lower portion of the main body case 2 is located on the rear side of the lower surface of the main body case 2, and a large space is formed in the rear portion of the lower surface of the main body case 2 in combination with the configuration in which the ink sheet cartridge 20 is inclined forward. Then, in this space, that is, below the storage section 13, the control board 29 for executing the operation of the facsimile apparatus 1 is arranged.

The ink sheet 21 wound from the supply-side sheet spool 25 to the front winding-side sheet spool 26.
Is a thermal head 22 and a tension member 2 made of a spring plate.
3 to the lower peripheral surface side of the take-up side sheet spool 26. At this time, the ink surface of the ink sheet 21 is on the upper surface. The recording paper 4 that overlaps the upper surface (ink surface) of the ink sheet 21 is printed on the print portion where the platen 17 and the thermal head 22 overlap each other, and then is printed on the upper portion of the ink sheet cartridge 20 on the take-up side sheet spool 26 side. The sheet passes through the upper surface of the partition plate 24 having the function of the formed transport chute, and is discharged to the front of the main body case 2 via the pair of discharge rollers 28. On the lower surface of the upper cover body 6, an upper chute portion 27 of a plurality of rib-shaped conveyance chutes protruding downward is arranged so as to extend from the upstream side to the downstream side of the conveyance with the platen 17 interposed therebetween. The recording paper 4 can be passed between the partition plate 24 of the cartridge 20 and the partition plate 24.

On the other hand, the ink sheet 21 is bent downward at the top surface of the tension member 23, passes through the lower surface side of the partition plate 24, and is wound around the lower peripheral side of the winding side sheet spool 26. Has been done.

Next, the structure of the ink sheet cartridge 20 will be described in detail with reference to FIGS.

The ink sheet cartridge 20 includes a cartridge body 30, an ink sheet 21, and a pair of left and right supply side spools 3 as a supply side sheet spool 25.
6 and 37, and a pair of left and right take-up spools 38 and 39 as the take-up sheet spool 26.

Each of the spools 36, 37 and 39 is a shaft portion with a flange that is detachably fitted to both ends of core tubes 40 and 41 for winding the ink sheet 21, and for example, injection of synthetic resin material. It is integrally formed by molding or the like, and only one spool 38 is configured by combining a plurality of parts.

Next, the structure of the cartridge body 30 as the cartridge body will be described with reference to FIGS. The cartridge body 30 includes a pair of left and right side plates 31a and 31b extending from the sheet supply side to the winding side so as to surround the left and right outer sides of the ink sheet 21, and the ink sheet 21 is wound around the pair of side plates 31a and 31b. It is composed of an upper cover piece 32 that is long on both left and right sides and connected so as to cover the upper side of the portion, and a partition plate 24 that also covers a pair of side plates 31a and 31b between the upper parts on the winding side of the ink sheet 21. It is made of resin material by injection molding. Therefore, a portion surrounded by the supply side upper cover piece 32 which is long in the left and right direction, the partition plate 24 on the winding side, and the left and right side plate connecting pieces 31a and 31b is a window hole portion through which the ink sheet 21 is exposed. The roller-shaped platen 17 faces from the upper side of the portion, and the printing table 19, the thermal head 22 and the tension body 23 face from the lower side of the window hole portion (see FIGS. 1 and 2). The left and right end portions of the partition plate 24 or the pair of left and right side plates 31
Pinching portions 35, 35, such as fin-like shapes, project upward from a and 31b.

The side plates 31a and 31b are provided with
Outer shafts 44 of the supply-side right spool 37 and the winding-side right spool 39, except for the winding-side left spool 38.
A shaft support groove 33 of one end open type is formed in which the support shaft of the supply side left spool 36 is loosely fitted (see FIGS. 6 and 8). The side plates 31a, 31 are provided so as to be continuous with the shaft support groove 33 and extend outward in the radius direction.
Each of the outer shafts 44 is formed by the open groove 34 formed in the notch b.
When the (support shaft portion) is pushed upward with its axis substantially crossing the shaft support groove portion 33, the width dimension between the lower open groove edges of each shaft support groove portion 33 elastically expands,
In the free state, each outer shaft 44 (supporting shaft part) is connected to each shaft support groove
It is configured so as not to drop with respect to 3.

The ink sheet 21 is formed by forming an ink layer on one side of a wide resin film, and as shown in FIG. 8, it is wound around a pair of cylindrical core tubes 40 and 41 made of paper or the like. Has been done. The recording paper 4 is formed on the ink layer of the ink sheet 21.
So as to face each other and sandwiched between the platen 17 and the recording surface of the thermal head 22 which is a line printer, and the heating resistor of the thermal head 22 is energized according to the image data, so that the recording paper 4 is line by line. An image is formed.

Core tube 40 on the supply side and core tube 41 on the winding side
As shown in FIG. 8, the supply side right spool 37 and the winding side right spool 39, which are fitted to the respective right ends (the right side when viewed from the discharge side of the recording paper 4), have the same shape as shown in FIG. Four
1) An inner cylinder portion 42 fitted to the inner diameter of the right end portion, a large-diameter flange portion 43, and a small-diameter cylindrical outer shaft 44 as a support shaft portion rotatably arranged with respect to the cartridge body 30 described later. It is composed of and.

The supply-side left spool 36 fitted to the left end of the supply-side core tube 40 is fitted in the inner diameter of the left end portion of the core tube 40 and has an inner cylindrical portion with an engaging claw 42a which engages with the notch groove. 42
A large-diameter flange portion 43, a support shaft portion (not shown) provided outside the flange portion 43 and rotatably arranged with respect to a cartridge body 30 described later, and a gear portion provided outside the support shaft portion. 45 and (see FIG. 8).

On the other hand, the take-up-side left spool 38 fitted to the left end of the take-up-side core tube 41 is attached to the shaft hole 50 of the one side plate 31a of the cartridge body 30 so as not to come off. A first rotating member 46 with a transmission gear 47 arranged outside the one side plate 31a, and a flange 48a connected to the first rotating member 46 from the inside of the one side plate 31a.
And a shaft portion 48 provided with. A cylindrical intermediate adapter 70 formed by injection molding a synthetic resin material is inserted between the base portion 48b of the flanged shaft portion 48 and the core tube 41. The intermediate adapter 70 according to the present embodiment can be slidably contacted with the tubular portion 70a that fits tightly between the outer diameter of the base portion 48b and the inner diameter of the core tube 41, and the side surface of the flange 48a protruding from the base portion 48b. The large-diameter flange portion 70b and the flange 4 on the side surface of the flange portion 70b.
The first engaging projection 7 of a bifurcated strip that engages with a plurality of locking holes 71 formed at regular intervals along the circumferential direction on the side surface of 8a.
2 and a second engaging projection 73 protruding from the outer circumference of the tubular portion 70a and fitted into the cutout groove 60 in the core tube 41 (FIG. 13 (a)). ) And FIG. 13 (b).

The cylindrical portion 70a is formed with a plurality of cut grooves 74 which are long in the axial direction so as to be easily bent when fitted into the core tube 41, and to be fitted into the core tube 41 easily. A ridge is formed on the outer circumference of the tubular portion 70a.

10 (a), 10 (b) and 10
10C and FIG. 10D show the first rotating member 46 made of a synthetic resin material such as nylon resin, in which the inner cylindrical portion 46a is formed long in the inner diameter portion of the transmission gear 47 along the axis. A rod-shaped elastic body 51 extending along the axial direction is integrally formed in the one-side cutout portion 46c of the inner cylinder portion 46a. A locking claw 51a is integrally formed on the free end side of the elastic body 51 in a radially outward direction. However, the elastic body 51 and the locking claw 51a are not essential in the present invention and are thin. When the core tube 41 having the inner diameter is used, the core tube 41 is engaged with and disengaged from an engagement hole (not shown) penetrating the core tube 41 in the radial direction.

A fan-shaped base portion 46b, which is divided into three along the circumference, is provided on the outer side of the radius of the inner cylindrical portion 46a.
Further, a substantially rectangular fitting hole 53 into which the tip claw portions 52a of the three engaging bodies 52 of the shaft portion 48 with the flange 48a are fitted is provided between the three divided base portions 46b. A step portion 53a as an engaging portion is formed on the outer peripheral side of each fitting hole 53. The base portion 46b divided into three parts is provided on the side surface facing the shaft portion 48 so as to project,
A positioning protrusion 54 extending in the radial direction is integrally formed.

11 (a), 11 (b) and 11
(C) is a flange 4 made of synthetic resin such as nylon resin.
8a shows a structure of a shaft portion 48 with 8a, a disk-shaped flange 48a projects radially outward from a cylindrical base portion 48b, and at one end of the base portion 48b, a guide portion 48c having an arc-shaped cross section with a slightly smaller radius is provided. The elastic body 51.
Also, the tip locking claw 51a can penetrate the inner diameter portions of the base portion 48a and the guide portion 48c in the axial direction. Three engaging bodies 52 project from the middle of the radius of the flange 48a in the opposite direction to the base 48b. This each engaging body 5
Since the locking hole 71 is formed by using the die-cutting hole for injection-molding 2, the manufacturing cost of the die can be reduced.

Further, a positioning hole 55 into which each positioning protrusion 54 of the first rotating member 46 is fitted is formed at the root of the base portion 48b and the flange 48a. The radial position of the locking hole 71 in the flange 48a is larger than the radial position of the positioning hole 55, and is between the circumferentially arranged positions of the positioning holes 55.

With the above structure, the cartridge body 30
In the embodiment, from the outer side of the left side plate 31a shown in FIG. 4, from the outside of the left side plate 31a, as shown in FIG.
Then, the base portion 46b of the first rotating member 46 is inserted, the flange 48a of the shaft portion 48 is approached from the inside of the side plate 31a, and the three engaging bodies 52 are inserted into the shaft hole 50.
Then, the front end claw portions 52a of the respective engagement bodies 52 are fitted into the fitting holes 5 on the inner diameter side of the transmission gear 47 in the first rotating member 46.
Fit in 3. As a result, the tip claws 52a are engaged with the stepped portions 53a on the outer peripheral side of the fitting holes 53, and are integrated as the take-up side left spool 38, and cannot be removed from the shaft hole 50 and the cartridge body 30. Of.

Further, in the state in which it is integrated as the take-up side left spool 38, the outer periphery at the mating portion of the base portion 48b of the shaft portion 48 and the three-divided base portion 46b of the first rotating member 46 becomes cylindrical, The transmission gear 47 for the shaft hole 50
It also serves as a positioning portion for the rotation center axis of the take-up spool 38.

A mode in which the replacement ink sheet set is mounted on the cartridge body 30 having the above-described structure will be described. The replacement ink sheet set is a set in which a new ink sheet 21 is wound around the supply side core tube 40 and a winding side core tube 41.
The intermediate adapter 70 may be fixed in advance in the vicinity of a predetermined one end of 1, or the intermediate adapter 70 may be prepared as an optional item. The width dimension of the ink sheet 21 is preferably substantially equal to the dimension between both ends of the core tube 41. In addition, the end portion of the new ink sheet 21 is previously attached to the outer periphery of the core tube 41 with an adhesive tape or the like.
Then, the first rotating member 46 and the shaft portion 48 with the flange 48a are attached to a predetermined shaft hole 50 of the cartridge body 30 so as not to come off, thereby forming the take-up side left spool 38 (FIG. 14). reference).

An intermediate adapter 70 is inserted between the end portion (left end) of the winding-side core tube 41 and the shaft portion 48 of the winding-side left spool 38, and the core tube 41 is attached to the shaft portion 48. Plug in. In this case, attach the intermediate adapter to the shaft 4
It is also possible to fit the base portion 48b in 8 and the first engaging projection 72 in the engaging hole 71 of the flange 48a.

On the other hand, the winding side right spool 39 is inserted and attached to the right end of the core tube 41. As shown in FIG. 8, a supply-side left spool 36 and a supply-side right spool 37 are inserted and attached to both ends of the supply-side core tube 40, respectively.

As described above, the four spools 36, 3
One of the spools 7, 38, 39 (the left spool 38 on the take-up side) is attached to the cartridge body 30 so as not to come off. Therefore, for example, in the above-described embodiment, the side on which the transmission gear 47 is arranged is the cartridge body 30. It is clear that it is one of the left and right of the, and when the user replaces the new ink sheet 21, the error in the direction when attaching both ends of the core tubes 40 and 41 to each spool is reduced,
The ink sheet 21 can be replaced quickly and easily.

Since the intermediate adapter 70 is inserted only at one end of one core tube 41, the winding side spool using the core tube 41 whose inner diameter does not match the intermediate adapter 70 is the ink of the present invention. Sheet cartridge 2
No printing can be performed by not using the regular ink sheet 21 because there is no misuse that the ink sheet 21 cannot be mounted on the image forming apparatus such as a facsimile machine manufactured by the applicant of the present invention and the ink sheet 21 having different quality is mistakenly mounted. Deterioration of quality,
Problems such as defective printing can be prevented.

In the above state, the winding side right spool 39, the supply side left spool 36 and the supply side right spool 37.
The shaft support groove 3 in the cartridge body 30
3, 33, 33, and the core tube 41 on the winding side is rotated so that the ink sheet 21 is not loosened.

Ink sheet cartridge 2 having the above structure
When 0 is set in the storage unit 13 of the facsimile device 1,
The left and right side plates 31a and 31b of the cartridge body 30 as the cartridge body are supported in a predetermined posture,
At this time, the inner diameter portions of the outer cylinders 44, 44 of the take-up side right spool 39 and the supply side right spool 37 are fitted into a shaft portion (not shown) projecting on the body frame side (not shown), while the supply is performed. The gear portion 45 and the transmission gear 47 in the left side spool 36 and the take-up side left spool 38 mesh with power transmission gears (not shown), respectively, and the outer shafts in the supply side left spool 36 and the take-up side left spool 38 respectively. The inner diameter portion of is fitted into a shaft portion (not shown) elastically projecting from the body frame side in the axial direction. As a result,
The supply side sheet spool 25 and the take-up side sheet spool 26 can rotate smoothly.

The control board 29 is actuated by the print command output from the operation panel 3 or the print command command output from an external computer (not shown), or the reception of facsimile data from another facsimile apparatus, and the printing (recording) work is performed. When the paper feeding is started, first, the paper feeding roller 15 is rotated and the paper feeding is started. After the leading edge of the recording paper 4 is detected by a paper sensor (not shown), the recording paper 4 is conveyed for a predetermined distance, and the platen 17
Approaching to, the power is transmitted to the gear portion 45 and the transmission gear 47 in the platen 17 and the ink sheet cartridge 20, the first rotating member 46 and the shaft portion 48 with the flange 48a are integrated, and the shaft portion 48 and the core Since the intermediate adapter 70 having the first engagement protrusion 72 and the second engagement protrusion 73 is inserted between the pipe 41 and the tube 41, the transmission gear 47 rotates in the predetermined winding direction of the ink sheet 21. The force can be transmitted to the core tube 41 (see FIG. 15). As a result, the conveyance of the ink sheet 21 and the feeding of the recording paper 4 are started, and printing is performed by the thermal head 22, which is the printing unit.

Immediately after the ink sheet 21 and the recording paper 4 are printed while being sandwiched between the platen 17 and the thermal head 22, the ink on the ink sheet 21 is printed due to the heat generated by the heating resistor of the thermal head 22. The ink sheet 21 is melted according to the data (character) and is reflected on the recording paper 4, and then the ink is cooled so that the ink sheet 21 remains attached to the surface of the recording paper 4. At the location of the top surface 23a of the tension member 23, the ink sheet 21 is largely bent downward so as to be wound around the lower peripheral side of the take-up side sheet spool 26, as shown in FIG. The stalemate caused by the ink is released. On the other hand, the recording paper 4 whose lower surface is the printing surface is placed on the upper surface of the partition plate 24 and conveyed, whereby the recording paper 4 and the ink sheet 2 are conveyed.
It is possible to reliably separate the transport path from the carrier 1. The tip of the partition plate 24 (the side closer to the top surface 23a of the tension member 23) is bent downward to scoop the tip of the recording sheet 4 in the free state (downstream side of conveyance), so that the recording sheet 4 is separated. It can prevent downward movement.

Then, the intermediate adapter 70 is formed in accordance with the thickness (width) of the ink sheet 21 used and the diameter (inner diameter) of the core tube 41 used according to the material of the ink sheet 21.
Can be set appropriately, and the intermediate adapter 70 can be replaced according to the ink sheet 21 to be used. Therefore, the user purchased the replacement ink sheet 21 (the core tubes 40 and 41 and the intermediate adapter 70 became a set). It suffices to attach the one) to the image forming apparatus as it is. Also,
Since the intermediate adapter is inserted only at one end of one core tube, the take-up spool using the core tube whose inner diameter does not match the intermediate adapter cannot be mounted on the ink sheet cartridge of the present invention, and thus the regular spool cannot be mounted. It is possible to prevent misuse of ink sheets of different qualities that are mistakenly attached to an image forming apparatus such as a facsimile machine, and prevent troubles such as deterioration of print quality and print defects caused by not using a regular ink sheet. It is possible to solve the problem that the image forming apparatus does not operate normally, for example, the normal printing performance that can be exhibited by using a regular ink sheet cannot be exhibited.

As shown in FIG. 5, if a large number of ridges 24a are formed on the upper surface of the partition plate 24 in the longitudinal direction along the transport direction, the recording paper 4 with the printing surface facing downward is formed.
When the sheet passes, the printing surface is not widely rubbed, and the stain on the recording paper 4 due to the ink adhesion can be reduced.

In the above embodiment, the present invention is applied to the facsimile machine, but of course the invention is not limited to this.
It can be used in various image forming apparatuses such as a printer, a copying machine, or a device having a plurality of these functions.

[0049]

As described above, in the ink sheet set according to the first aspect of the present invention, the tubular portion is fitted in the inner diameter portion of the winding side core tube, and the engaging projection formed on the intermediate adapter is wound. In a state of being engaged with the cutout portion of the take-up side core tube, the engaging protrusion is configured to fit within the width dimension of the ink sheet taken up by the take-up side core tube, and power from the main body side is applied. Since it is configured to be directly transmitted to the winding side core tube via the intermediate adapter, the power transmitted from the main body side can be reliably transmitted to the core tube with a simple configuration. Further, the intermediate adapter can be appropriately set according to the thickness and width of the ink sheet used and the diameter (inner diameter) of the core tube according to the material of the ink sheet.

The invention according to claim 2 is the ink sheet set according to claim 1, in which a ridge is formed on the outer peripheral surface of the cylindrical portion of the intermediate adapter.
This has the effect that the tubular portion can be easily fitted into the core tube.

Further, in the third aspect of the present invention, the rotational force in the winding direction of the predetermined ink sheet can be reliably transmitted to the core tube with a simple structure. Further, the intermediate adapter can be appropriately set according to the thickness and width of the ink sheet used and the diameter (inner diameter) of the core tube according to the material of the ink sheet.

Furthermore, the ink sheet set of the invention described in claim 4 has the effect that in the ink sheet set described in claim 3, the ink sheet set can be easily attached to the ink sheet cartridge.

[0053]

[Brief description of drawings]

FIG. 1 is a side sectional view of a facsimile device.

FIG. 2 is a side view showing the paths of recording paper and ink sheets in the vicinity of the printing unit.

FIG. 3 is a plan view of an ink sheet cartridge.

FIG. 4 is a perspective view of the ink sheet cartridge as viewed from the front left side.

FIG. 5 is a perspective view of the ink sheet cartridge as viewed from the front right side.

FIG. 6 is a right side view of the ink sheet cartridge.

FIG. 7 is a left side view of the ink sheet cartridge.

FIG. 8 is an exploded perspective view of the components of the ink sheet cartridge in a state of being turned over.

9 is a first rotating member 46 and a shaft portion 48 with a flange,
It is an exploded perspective view of the intermediate adapter 70 and the like.

FIG. 10A is a front view of the first rotating member 46, and FIG.
Is a cross-sectional view taken along the line Xb-Xb of FIG. 10A, and FIG.
10A is a left side view, and FIG. 10D is a right side view of FIG. 10A.

FIG. 11A is a front view of a flanged shaft portion 48,
11B is a sectional view taken along the line XIb-XIb of FIG. 11A,
FIG. 11C is a right side view of FIG.

12A is a right side perspective view of the flanged shaft portion 48, and FIG. 12B is a left side perspective view of the same.

FIG. 13 (a) is a partially cutaway front view of the intermediate adapter,
(B) is a right side view with a part notched.

FIG. 14 is an enlarged cross-sectional view showing a connection positional relationship among a first rotating member 46, a flanged shaft portion 48, and an intermediate adapter 70.

FIG. 15 is an enlarged cross-sectional view showing a connected state.

[Explanation of symbols]

20 ink sheet cartridge 21 ink sheet 24 partition boards 25 Supply side seat spool 26 Seat spool on winding side 30 Cartridge body 31a, 31b Side plates 32 Top cover piece 36-39 spool 40, 41 core tube 42 Inner tube 43, 48a Flange part 45 Gear 46 First rotating member 47 transmission gear 48 shaft 48b base 50 shaft hole 51 elastic body 51a locking claw 52 Engagement body 52a Tip claw 53 Fitting hole 53a Step 54 Positioning protrusion 55 Positioning hole 60 Notch groove 70 Intermediate adapter 70a tube 70b collar part 71 Locking hole 72 First engagement protrusion 73 Second engagement projection

Claims (4)

(57) [Claims] 1. An ink comprising a supply side core tube and a winding side core tube, and an ink sheet wound around these core tubes and having a width dimension substantially equal to a dimension between both ends of the winding side core tube. The sheet set includes an intermediate adapter having an engagement projection that engages with a notch formed at the end of the winding-side core tube and has a tubular portion that fits into the inner diameter of the winding-side core tube. , With the engaging projection of the intermediate adapter engaged with the cutout portion of the winding side core tube, the engaging projection fits within the width dimension of the ink sheet wound around the winding side core tube The power from the main body side is directly transmitted to the winding side core tube through the intermediate adapter, and the ink sheet cartridge can be replaced.
An ink sheet set that is attached to the . 2. The ink sheet set according to claim 1, wherein a ridge is formed on the outer peripheral surface of the cylindrical portion of the intermediate adapter. 3. An ink sheet set mounted on an ink sheet cartridge, wherein one of the take-up side spools is configured to be fixed to a side plate, the supply side core tube and the take-up side core tube, and those core tubes. And an ink sheet having a width dimension substantially equal to a dimension between both ends of the winding side core tube, and an engaging projection engaging with a notch formed at an end of the winding side core tube. The formed intermediate adapter and the ink sheet in which the engagement protrusion of the intermediate adapter is wound around the winding-side core pipe in a state where the engagement protrusion is engaged with the cutout portion of the winding-side core pipe. The ink sheet cart is configured so that the power from the winding side spool is directly transmitted to the winding side core tube through the intermediate adapter.
An ink sheet set that is detachably attached to the ridge . 4. The ink sheet cartridge is mounted via spools mounted on both sides of the other side of the take-up side core tube and the supply side core tube.
Ink sheet set described.