Tape cartridge and printing device

Abstract

The utility model provides a tape box and a printing device, relates to the technical field of printing equipment, and is used for solving the technical problems that the tape box is not assembled in place and tilts due to the fact that the tape box and a containing bin are clamped too tightly at present, and the tape box is difficult to take out from the containing bin or even cannot be taken out from the containing bin. The box shell is configured to be a rectangular shell, and the box shell comprises a top wall, a bottom wall, side walls and a plurality of corners; the box shell is at least provided with a containing area; part of the bottom wall is configured as a concave part and is located at the edge of the box shell; in the first direction, the concave part is concave inwards relative to the belt accommodating area; the concave part is positioned between two adjacent corner parts, and the concave part is at least communicated with one corner part. The printing device provided by the utility model forms an image on a medium through an imaging processing technology.

Description

Technical Field

[0001] The present application relates to the technical field of printing equipment, and in particular to a tape box and a printing device. Background Art

[0002] The printing device is a device that forms an image on a medium through imaging processing technology. For example, a printer, etc. The printing device includes a main body and a tape box arranged in the main body. The main body is provided with a storage bin, the storage bin is provided with a positioning protrusion, and the bottom wall of the tape box is provided with a recess. When the tape box is installed in the storage bin, the recess is engaged with the positioning protrusion to position the tape box.

[0003] However, currently the tape cassette is too tightly engaged with the storage compartment, resulting in the tape cassette not being properly assembled and tilting, and making it difficult or even impossible to remove the tape cassette from the storage compartment. Utility Model Content

[0004] In view of the above problems, an embodiment of the present application provides a tape cassette and a printing device, which can avoid the tape cassette from being improperly assembled and tilting, and the tape cassette being difficult or even impossible to remove from the storage compartment.

[0005] In order to achieve the above objectives, the present application provides the following technical solutions:

[0006] A first aspect of an embodiment of the present application provides a tape box including a box shell; the box shell is configured as a rectangular shell, and the box shell includes a top wall, a bottom wall, a side wall and a plurality of corners; the box shell is provided with at least one tape accommodating area; a portion of the bottom wall is configured as a recess, and along a first direction, the recess is recessed inwardly relative to the tape accommodating area; the recess is located between two adjacent corners, and the recess is connected to at least one of the corners.

[0007] In a possible implementation manner, the recess and the corners adjacent thereto are in the same plane; and two sides of the recess extend to the two corners adjacent thereto, respectively.

[0008] In a possible implementation manner, an arc-shaped transition portion is provided between the recess and at least one of the corner portions.

[0009] In a possible implementation, the tape box further includes a detection portion, and the detection portion is disposed in the recess.

[0010] In a possible implementation, the detection portion includes detection positions, and some of the detection positions are configured as one or a combination of holes, grooves, or protrusions.

[0011] In one possible implementation, the box shell is configured as a rectangular shell; the bottom wall of the box shell is provided with a first corner, a second corner, a third corner and a fourth corner, wherein the first corner is configured as a belt discharge portion; the second corner, the third corner and the fourth corner are configured as a support portion; wherein the second corner and the first corner are arranged opposite to each other along the second direction, the second corner and the third corner are arranged opposite to each other along the third direction, and the third corner and the fourth corner are arranged opposite to each other along the second direction; along the third direction, the recess is located between the second corner and the third corner, and along the first direction, the recess is located at the edge of the bottom wall.

[0012] In a possible implementation, the box shell includes a main body and a top cover that are detachably connected; the main body has the bottom wall and the side walls, and the bottom wall and the side walls form a accommodating cavity and a top opening connected to the accommodating cavity; the top cover includes the top wall, and the top cover is covered on the top opening of the main body along a first direction.

[0013] In a possible implementation, the tape accommodating area includes a first accommodating area, a second accommodating area, and a third accommodating area that are spaced apart; wherein the first accommodating area is used to accommodate the medium tape, the second accommodating area is used to accommodate the printing film; and the third accommodating area is used to accommodate the color ribbon.

[0014] In a possible implementation, the tape box also includes a driving wheel, a tape passing wheel, a supply wheel, a label wheel and an axis core; the ribbon is wound on the supply wheel, and one end of the ribbon is combined with the printing film and connected to the driving wheel, and the driving wheel rotates and winds the used ribbon; the printing film is wound on the axis core, the medium tape is wound on the label wheel, and the printing film and one end of the medium tape are driven by the tape passing wheel and output to the outside of the tape box.

[0015] The second aspect of an embodiment of the present application provides a printing device, comprising a main body and the tape box described in the first aspect; the main body has a accommodating compartment, and the bottom wall of the accommodating compartment is provided with a positioning protrusion; the tape box is installed in the accommodating compartment, and the recess of the tape box is engaged with the positioning protrusion.

[0016] Compared with the related art, the tape box and printing device provided in the embodiment of the present application have the following advantages:

[0017] The tape box and the printing device provided by the embodiment of the present application, wherein the bottom wall of the tape box is combined with the bottom wall of the storage compartment of the printing device, by providing a plurality of corners and recesses on the bottom wall of the tape box, wherein the recess is provided between two corners and located at the edge of the box housing. Further, the corner is communicated with at least one corner near it.

[0018] In the related art, a recess is provided on the bottom wall of the tape box between two corners, and the recess is not connected to the two corners, resulting in a large combined area and a small adjustable space when the recess is combined with the positioning protrusion of the accommodating bin, which causes the tape box to be improperly assembled and tilted, and it is difficult or even impossible to remove the tape box from the accommodating bin.

[0019] The tape box provided in the embodiment of the present application has a recessed portion connected to a corner portion to form a gap around the recessed portion, thereby reducing the joint area between the tape box and the bottom wall of the accommodating bin, so that when the recessed portion and the positioning protrusion are positioned or released, the tape box has a certain adjustment space to facilitate the installation of the tape box into place and removal from the accommodating bin.

[0020] In addition to the technical problems solved by the embodiments of the present disclosure, the technical features that constitute the technical solution, and the beneficial effects brought about by the technical features of the technical solution described above, other technical problems that can be solved by the tape box and printing device provided by the embodiments of the present disclosure, other technical features included in the technical solution, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the overall structure of the tape box provided in an embodiment of the present application;

[0023] Figure 2 An exploded view of a tape box provided in an embodiment of the present application;

[0024] Figure 3 The bottom wall of the tape box provided in the embodiment of the present application is schematically shown Figure 1 ;

[0025] Figure 4 The bottom wall of the tape box provided in the embodiment of the present application is schematically shown Figure 2 ;

[0026] Figure 5 A schematic diagram of the arrangement of the driving wheel, the tape passing wheel, the supply wheel, the label wheel and the shaft core of the tape cassette provided in an embodiment of the present application in the main body;

[0027] Figure 6 A schematic diagram of the transmission paths of the color ribbon, printing film and medium tape of the tape cassette provided in an embodiment of the present application.

[0028] Description of reference numerals:

[0029] 10-box housing;

[0030] 10a-top wall; 10b-side wall; 10c-bottom wall;

[0031] 11-Ontology;

[0032] 12-top cover;

[0033] 13-with accommodation area;

[0034] 14-concave;

[0035] 151-first corner; 152-second corner; 153-third corner; 154-fourth corner;

[0036] 16-arc transition portion;

[0037] 20- driving wheel;

[0038] 30- pulley;

[0039] 40-supply wheel;

[0040] 50-Tag wheel;

[0041] 60-shaft core;

[0042] 70-printing film;

[0043] 80-ribbon;

[0044] 90- medium tape;

[0045] 100-with box. DETAILED DESCRIPTION

[0046] The printing device in the related art has the problem that the tape cassette is too tightly engaged with the storage bin, resulting in the tape cassette not being properly assembled and tilting, and it is difficult or even impossible to remove the tape cassette from the storage bin. The inventor has found that the reason for this problem is:

[0047] A recess is provided on the bottom wall of the tape box between the two corners, and the recess is not connected to the two corners, resulting in a large combined area and a small adjustable space when the recess is combined with the positioning protrusion of the accommodating bin, causing the tape box to be improperly assembled and warped, and making it difficult or even impossible to remove the tape box from the accommodating bin.

[0048] In view of the above technical problems, the embodiment of the present application provides a tape box, by providing a plurality of corners and recesses on the bottom wall of the tape box, wherein the recess is provided between two corners and located at the edge of the box shell. Further, the corner is at least connected to a corner near it.

[0049] This arrangement forms a gap around the recess, reducing the joint area between the tape box and the bottom wall of the accommodating compartment, so that when the recess and the positioning protrusion are positioned or released, the tape box has a certain adjustment space to facilitate the installation of the tape box into place and removal from the accommodating compartment.

[0050] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application.

[0051] To facilitate the description of the embodiments of the present application, the coordinate system in the accompanying drawings is first described, wherein the Z-axis direction is the first direction, which is defined as the height (thickness) direction of the tape box, the Y-axis direction is the second direction, which is defined as the width direction of the tape box, and the X-axis direction is the third direction, which is defined as the length direction of the tape box.

[0052] The printing device provided in the embodiment of the present application includes a main body and a tape box, and the tape box can be detachably installed in the main body. For example, the main body has a storage compartment, the storage compartment cooperates with the tape box, the bottom wall of the storage compartment is provided with a positioning structure, the positioning mechanism may include a plurality of positioning protrusions, and the tape box is provided with a recessed part that cooperates with the positioning protrusions. When the tape box is inserted into the storage compartment, the recessed part cooperates with the positioning protrusion to complete the positioning of the tape box.

[0053] like Figures 1 to 3 As shown, the tape box 100 in the embodiment of the present application includes a medium tape 90, a color ribbon 80 and a printing film 70, etc. The color ribbon 80 is used to provide carbon powder for printing. The carbon powder is heated by the print head of the printing device and melts onto the printing film 70 to form the required printing information. The printed printing film 70 is bonded to the medium tape 90, and further, under the clamping of the pressure roller of the printing device, the printing film 70 and the medium tape 90 are led out of the tape box 100 to form a label.

[0054] The tape box 100 includes a box housing 10, and the box housing 10 is a rectangular shell as a whole. The box housing 10 includes a top wall 10a and a bottom wall 10c arranged opposite to each other along a first direction, and the top wall 10a and the bottom wall 10c are respectively arranged horizontally. The box housing 10 has a accommodating cavity, and is used to accommodate the above-mentioned medium tape 90, printing film 70 and ribbon 80, so the bottom wall 10c in the embodiment of the present application is divided into multiple functional areas, and the multiple functional areas include but are not limited to the tape accommodating area 13, the corner and the recess 14.

[0055] Specifically, a portion of the bottom wall 10c is configured as a tape accommodating area 13, which is used to arrange the above-mentioned medium tape 90, printing film 70 and ribbon 80; a portion of the bottom wall 10c is configured as a corner, and each corner is located at a corner of the box body 10, one of the corners is configured as a tape discharge portion, and the tape discharge portion is configured to discharge the finished labels from the tape box 100, and the other corners are configured as supporting corners, which are used to support the tape box 100 when the tape box 100 is installed in the accommodating bin.

[0056] Part of the bottom wall 10c is configured as a recess 14, and the recess 14 is recessed inward relative to the tape accommodating area 13 along the first direction. In other words, when the tape box 100 is placed horizontally, the height of the bottom wall 10c of the tape accommodating area 13 is lower than the height of the bottom wall 10c of the recess 14, that is, along the first direction, the bottom wall 10c of the tape accommodating area 13 protrudes downward from the bottom wall 10c of the recess 14.

[0057] In the second direction, the recess 14 is usually arranged at the edge of the bottom wall 10c, and the recess 14 is arranged between two corners in the third direction, and the recess 14 is connected to at least one of the corners. For example, the recess 14 is arranged at the edge of the bottom wall 10c in the third direction, and a corner is arranged on the left and right sides of the recess 14, respectively, and the recess 14 is connected to at least one of the corners, that is, one of the corners is connected to the local area where the recess 14 is located.

[0058] In the prior art, a recess is provided on the bottom wall of the tape box between two corners, and the recess is not connected to the two corners, resulting in a large combined area and a small adjustable space when the recess is combined with the positioning protrusion of the accommodating bin, which causes the tape box to be improperly assembled and warped, and makes it difficult or even impossible to remove the tape box from the accommodating bin.

[0059] In the tape cassette 100 provided in the embodiment of the present application, the recess 14 is connected to the corner to form a gap around the recess 14. In this way, the bonding area between the tape cassette 100 and the bottom wall of the storage bin can be reduced, so that when the recess 14 and the positioning protrusion are positioned or released, the tape cassette 100 has a certain adjustment space, so that the tape cassette 100 can be installed in place and taken out from the storage bin.

[0060] Furthermore, in the embodiment of the present application, a portion of the bottom wall 10c between the recess 14 and the corner is removed so that the recess 14 of the tape box 100 is connected to the corner. This arrangement can reduce the materials used to make the tape box and reduce production costs.

[0061] Exemplarily, the box housing 10 provided in the embodiment of the present application is configured as a rectangular housing, and the box housing 10 includes a body 11 and a top cover 12; wherein the body 11 includes the above-mentioned bottom wall 10c and side walls 10b, and the side walls 10b are arranged along the circumference of the bottom wall 10c, and the side walls 10b are connected to the bottom wall 10c and form a receiving cavity and a top opening connected to the receiving cavity. Further, along the first direction, the top cover 12 is detachably mounted on the top of the body 11, the top cover 12 includes a top wall 10a, and the top cover 12 covers the top opening of the body 11 and shields the top opening.

[0062] like Figure 4 As shown, the bottom wall 10c of the box shell 10 includes four corners, and the four corners are respectively arranged at the four corners of the bottom wall 10c, that is, a corner is correspondingly arranged at each corner. For the convenience of describing the embodiment of the present application, the four corners are respectively the first corner 151, the second corner 152, the third corner 153 and the fourth corner 154.

[0063] Furthermore, the four corners are arranged on the bottom wall 10c as follows: the second corner 152 is arranged opposite to the first corner 151 along the second direction, and the second corner 152 is arranged opposite to the third corner 153 along the third direction, the third corner 153 and the fourth corner 154 are arranged opposite to each other along the second direction, and the fourth corner 154 and the first corner 151 are arranged opposite to each other along the second direction; that is, the first corner 151 and the third corner 153 are arranged diagonally, and the second corner 152 and the fourth corner 154 are arranged diagonally.

[0064] In the third direction, the recess 14 is located between the second corner 152 and the third corner 153, and in the second direction, the recess 14 is located at the edge of the bottom wall 10c. The recess 14 selectively communicates with at least the second corner 152 and / or the third corner 153. For example, in the third direction, the recess 14 is centrally arranged between the second corner 152 and the third corner 153 and located at the edge of the bottom wall 10c.

[0065] It can be understood that the first corner 151 is configured as a tape discharge portion, the second corner 152, the third corner 153 and the fourth corner 154 are configured as support portions, and a support through hole can be optionally provided in the third corner 153. When the tape box 100 is installed in the accommodating compartment, the support shaft of the printing device can be inserted into the support through hole to support the tape box 100.

[0066] Preferably, in the embodiment of the present application, the recess 14 and the corners near it are in the same plane, and the two sides of the recess 14 extend to the two corners adjacent to it respectively. For example, the recess 14 and the second corner 152 and the third corner 153 are in the same plane, that is, the bottom wall 10c where the recess 14, the second corner 152, and the third corner 153 are located are at the same height, and the left and right sides of the recess 14 extend to the second corner 152 and the third corner 153 respectively, and are connected to the second corner 152 and the third corner 153.

[0067] Such an arrangement can further reduce the joint area between the tape box 100 and the bottom wall of the storage bin, so that when the recess 14 and the positioning protrusion are positioned or released, the tape box 100 has a larger adjustment space. For example, the tape box 100 can be adjusted to the left or right along the third direction to facilitate the installation of the tape box 100 into place and removal from the storage bin.

[0068] It should be noted that the connecting area between the recess 14 and the second corner 152 and the third corner 153 can be configured as an arc-shaped transition portion 16 as required, that is, the side wall 10b connecting the extended area and the tape accommodating area 13 can be configured as an arc-shaped wall. For example, the recess 14 and the third corner 153 are connected through the arc-shaped transition portion 16, and the embodiment of the present application is not limited to this. Such a configuration can prevent the tape box 100 from being too tightly engaged with the bottom wall of the accommodating compartment.

[0069] The tape box 100 provided in the embodiment of the present application further includes a detection unit, which is disposed in the recess 14. The detection unit can be manufactured separately, that is, the detection unit is completely independent from the box housing 10, and the detection unit can be detachably connected to the recess 14. Alternatively, the detection unit and the box housing 10 are matched as an integrated structure, for example, the detection unit and the top cover 12 are integrally formed, and the embodiment of the present application is not limited to this.

[0070] Further, the detection unit in the embodiment of the present application is used to detect the type of the tape box 100. The detection unit includes a detection position, and some of the detection positions are configured as one or a combination of holes, grooves, or protrusions. Correspondingly, a detection button that cooperates with the detection position is provided in the printing device. When the tape box 100 is installed in the accommodating compartment, the detection button is arranged opposite to the detection unit. For example, the detection button includes a plurality of detection columns, and when the detection columns are pressed or not pressed by the detection unit, the type of tape in the tape box can be detected according to the combination mode of pressing or not pressing the plurality of detection units.

[0071] On the basis of the above-mentioned embodiments, the tape accommodating area 13 provided in the embodiments of the present application at least includes a first accommodating area, a second accommodating area and a third accommodating area, wherein the first accommodating area is used to accommodate the medium tape 90, so the first accommodating area is also called the medium tape accommodating area; the second accommodating area is used to accommodate the printing film 70, so the second accommodating area is also called the printing film accommodating area; the third accommodating area is used to accommodate the color ribbon 80, and the third accommodating area is also called the color ribbon accommodating area.

[0072] Furthermore, the first accommodating area, the second accommodating area and the third accommodating area are arranged at intervals from each other. Such an arrangement can prevent the three from contacting each other and affecting the printing effect before the required printing information is completed; and can prevent the printing film 70, the ribbon 80 and the medium ribbon 90 from winding, so as to successfully complete the printing operation.

[0073] like Figure 5 and Figure 6 As shown, the tape box 100 provided in the embodiment of the present application also includes a driving wheel 20, a tape passing wheel 30, a supply wheel 40, a label wheel 50 and an axis core 60, wherein the driving wheel 20 is arranged in the middle of the main body 11, and the tape box 100 is provided with a first through hole connected to the driving wheel 20. When the tape box 100 is installed in the accommodating compartment of the printing device, a driving shaft of the printing device is inserted into the first through hole of the tape box 100 and is connected to the driving wheel 20 for transmission. The driving shaft can drive the driving wheel 20 to rotate.

[0074] Furthermore, the belt pulley 30 is arranged in the main body 11 and close to the belt discharge part. The tape box 100 is provided with a second through hole connected to the belt pulley 30. When the tape box 100 is installed in the storage compartment of the printing device, another driving shaft of the printing device is inserted into the second through hole and is connected to the belt pulley 30. The driving shaft can drive the belt pulley 30 to rotate.

[0075] The supply wheel 40 is disposed in the ribbon storage area, and one end of the ribbon 80 is wound on the supply wheel 40 to form a ribbon roll. The other end of the ribbon 80 is combined with the printing film 70 (after the carbon powder on the ribbon 80 is melted to the printing film 70), and is connected to the driving wheel 20, which rotates and winds the used ribbon 80.

[0076] The shaft core 60 is disposed in the printing film accommodating area, and the printing film 70 is wound on the shaft core 60 to form a printing film roll. One end of the printing film 70 is connected to the shaft core 60, and the other end of the printing film 70 extends to the tape discharge portion and is transmission-connected to the belt passing wheel 30, that is, the belt passing wheel 30 rotates to drive the printing film 70 to continuously move toward the tape discharge portion.

[0077] The label wheel 50 is disposed in the medium tape accommodating area, and the medium tape 90 is wound on the label wheel 50 to form a medium tape roll. One end of the medium tape 90 is connected to the label wheel 50, and the other end of the medium tape 90 extends to the tape discharge portion and is transmission-connected to the tape passing wheel 30. When the tape passing wheel 30 rotates, the medium tape 90 continuously moves toward the tape discharge portion.

[0078] It should be noted that the embodiment of the present application has an arm portion at the front side of the tape box 100, which is arranged near the tape discharge portion and is used to guide the printing film 70 and the ribbon 80. A print head receiving portion is arranged at the arm portion, and the print head receiving portion is provided for the print head of the printing device to enter for printing.

[0079] The heating element on the print head generates heat to melt the toner on the ribbon 80 onto the print film 70 in the print head housing to form the required printing information. The printed print film 70 is attached to the print medium, clamped by the pressure roller in the printing device and output from the ribbon discharge unit, and the printed ribbon 80 is rolled back onto the drive wheel 20.

[0080] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0081] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0082] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0083] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A tape box, characterized in that: comprising a box housing; The box housing is configured as a rectangular housing, and the box housing includes a top wall, a bottom wall, a side wall, and a plurality of corners; The box housing is provided with at least one belt accommodating area; a portion of the bottom wall is configured as a recess and is located at the edge of the box housing; Along the first direction, the recess is recessed inwardly relative to the belt accommodating area; The recess is located between two adjacent corners, and the recess is communicated with at least one of the corners.

2. The tape cassette according to claim 1, characterized in that: The recess and the corners adjacent to the recess are in the same plane; two sides of the recess extend to the two corners adjacent to the recess respectively.

3. The tape cassette according to claim 2, characterized in that: An arc-shaped transition portion is provided between the recessed portion and at least one of the corner portions.

4. The tape cassette according to claim 1, characterized in that: The tape cassette further includes a detection portion disposed in the recess.

5. The tape cassette according to claim 4, characterized in that: The detection portion includes detection positions, and some of the detection positions are configured as one or a combination of holes, grooves, or protrusions.

6. The tape cassette according to any one of claims 1 to 5, characterized in that: The bottom wall of the box housing is provided with a first corner portion, a second corner portion, a third corner portion and a fourth corner portion, wherein the first corner portion is configured as a tape discharge portion; The second corner, the third corner and the fourth corner are configured as support portions; wherein the second corner is arranged opposite to the first corner along the second direction, the second corner is arranged opposite to the third corner along the third direction, and the third corner is arranged opposite to the fourth corner along the second direction; Along the third direction, the recessed portion is located between the second corner portion and the third corner portion, and along the first direction, the recessed portion is located at an edge of the bottom wall.

7. The tape cassette according to claim 1, characterized in that: The box housing comprises a detachably connected body and a top cover; The body comprises the bottom wall and the side wall, wherein the bottom wall and the side wall enclose a receiving cavity and a top opening communicating with the receiving cavity; The top cover includes the top wall, and the top cover is arranged to cover the top opening of the body along a first direction.

8. The tape cassette according to claim 1, characterized in that: The belt accommodating area includes a first accommodating area, a second accommodating area and a third accommodating area which are arranged at intervals; The first accommodating area is used to accommodate the medium tape, and the second accommodating area is used to accommodate the printing film; The third accommodating area is used for accommodating the ink ribbon.

9. The tape cassette according to claim 8, characterized in that: The tape box also includes a driving wheel, a tape passing wheel, a supply wheel, a label wheel and a shaft core; The ribbon is wound around the supply wheel, and one end of the ribbon is combined with the printing film and connected to the driving wheel, and the driving wheel rotates and winds the used ribbon; The printing film is wound on the shaft core, the medium tape is wound on the label wheel, and one end of the printing film and the medium tape is driven by the tape passing wheel and output to the outside of the tape box.

10. A printing device, characterized in that: A tape box comprising a main body and any one of claims 1 to 9; The main body has a storage bin, and a positioning protrusion is provided on the bottom wall of the storage bin; The tape box is installed in the accommodating compartment, and the recessed portion of the tape box is engaged with the positioning protrusion.

Images