Ink box

Abstract

The embodiment of the utility model provides an ink box, and relates to the technical field of printing. The ink box comprises a connecting piece and an ink bag. The connecting piece is provided with an ink outlet and a detection cavity; the ink bag comprises a first bag and a second bag, the first bag is arranged in the second bag, the first bag and the second bag are connected with the connecting piece in a sealed mode, the first bag stores ink, and the first bag is communicated with the detection cavity. A first heat insulation layer is formed between a first bag and a second bag of the ink bag, and a second heat insulation layer is arranged outside the second bag, so that the ink bag forms double-layer heat insulation, external heat can be effectively prevented from being transmitted to ink in the first bag, and ink quantity detection failure caused by the fact that bubbles in the ink overflow into a detection cavity of a connecting piece when the ink box is in a high-temperature environment is prevented. And the ink box is ensured to provide ink for printing equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of printing, in particular to an ink cartridge. Background Art

[0002] With the popularization of office automation, printing equipment has become an indispensable equipment in office activities. Common printing equipment includes laser printing and inkjet printing. In inkjet printing, it often includes a mounting part of the inkjet printer and an ink cartridge installed in the mounting part, wherein the ink cartridge is detachably installed on the mounting part. Specifically, the ink cartridge is installed on the mounting part of the printer to supply ink to the printer to realize the printing work of the inkjet printer.

[0003] In the related art, the ink cartridge includes a shell, a connecting member and a single-layer ink bag installed in the shell, and the connecting member is connected to the single-layer ink bag.

[0004] However, when the ink cartridge is stored in a high-temperature environment, the ink is heated, and the bubbles in the ink overflow. A large number of bubbles are stored in the single-layer ink bag, which may cause ink level detection failure or print head damage. Utility Model Content

[0005] The utility model provides an ink cartridge to solve the problem that when the ink cartridge is stored in a high-temperature environment, the ink is heated, bubbles in the ink overflow, and a large number of bubbles are stored in a single-layer ink bag, which may cause ink amount detection failure or print head damage.

[0006] The utility model provides an ink cartridge, which can provide ink to a device body of a printing device, including:

[0007] A connecting piece, wherein the connecting piece has an ink outlet and a detection cavity;

[0008] An ink bag, the ink bag comprising a first bag and a second bag, the first bag being arranged in the second bag, the first bag and the second bag being sealed and connected to the connecting piece, the first bag storing ink, and the first bag being connected to the detection cavity;

[0009] A first heat insulating layer is formed between the first bag and the second bag, and a second heat insulating layer is arranged outside the second bag.

[0010] In a possible implementation manner, the first bag and the second bag form a sealed space, and the sealed space is filled with a heat-insulating gas to form the first heat-insulating layer.

[0011] In a possible implementation, the insulating gas includes air.

[0012] In a possible implementation, the second heat insulation layer is an environmentally friendly polyester composite layer, and the environmentally friendly polyester composite layer is coated on the outside of the second bag.

[0013] In a possible implementation, the first bag includes a first bag body and a first edge connected to each other, the first edge faces the connecting piece, and the first edge is connected to the connecting piece;

[0014] The second bag comprises a second bag body and a second edge which are connected to each other, wherein the second edge faces the connecting piece, a gap is provided between the second bag body and the first bag body, and the second edge is connected to the connecting piece.

[0015] In a possible implementation manner, the first edge has a first fixing portion and a first opening connected to each other, and the first opening is connected to the connecting member;

[0016] The second edge has a second fixing portion and a second opening connected to each other, and the second opening is connected to the connecting member.

[0017] In a possible implementation manner, a first welding line is formed between the first edge and the second edge of the first edge, a second welding line is formed between the third edge of the second edge and the first edge of the first edge, and a third welding line is formed between the fourth edge of the second edge and the second edge of the first edge;

[0018] In the thickness direction of the ink cartridge, a projection of the first welding line, a projection of the second welding line, and a projection of the third welding line overlap.

[0019] In a possible implementation manner, both the first opening and the second opening are connected to the connecting member by welding.

[0020] In a possible implementation, it further includes a shell, in which the connecting piece and the ink bag are installed.

[0021] In a possible implementation manner, a third heat insulation layer is formed between the second bag and the outer shell.

[0022] The utility model embodiment provides an ink cartridge, wherein a first insulation layer is formed between a first bag and a second bag of an ink bag, and a second insulation layer is arranged outside the second bag, so that the ink bag forms a double-layer insulation, which can effectively prevent external heat from being transmitted to the ink in the first bag, thereby preventing bubbles in the ink from overflowing into the detection cavity of a connector under a high temperature environment, causing ink quantity detection failure, thereby ensuring that the ink cartridge provides ink to the device body of the printing device.

[0023] The ink bag forms a double-layer insulation, which can effectively prevent external heat from being transmitted to the ink in the first bag, thereby preventing bubbles in the ink from overflowing into the print head in a high temperature environment, causing damage to the print head, thereby ensuring that the ink cartridge provides ink to the device body of the printing device.

[0024] The ink bag forms a double layer of insulation, which can effectively prevent external heat from being transmitted to the ink in the first bag, thereby preventing the ink in the ink bag from evaporating in a high temperature environment, resulting in a reduction in ink volume, thereby increasing the number of printed pages and preventing the print head from being clogged.

[0025] The ink bag forms a double layer of insulation, which can also prevent the evaporation of ink in the ink cartridge in a high temperature environment, thereby avoiding a reduction in ink volume, a reduction in the number of printed pages, an increase in ink concentration, and clogging of the print head. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 A schematic diagram of the structure of an ink cartridge provided by an embodiment of the utility model;

[0028] Figure 2 A schematic diagram of a connecting member and an ink bag connected to each other according to an embodiment of the utility model;

[0029] Figure 3 for Figure 2 Schematic diagram of the cross section of AA in FIG.

[0030] Figure 4 A schematic diagram of a first bag and a second bag of an ink bag provided by an embodiment of the utility model after being connected;

[0031] Figure 5 for Figure 4 An enlarged schematic diagram of point B in FIG.

[0032] Figure 6 A schematic structural diagram of a first bag of an ink bag provided by an embodiment of the utility model;

[0033] Figure 7 for Figure 4 An enlarged schematic diagram of C in FIG.

[0034] Figure 8 A schematic structural diagram of the second bag of the ink bag provided in an embodiment of the utility model.

[0035] Description of reference numerals:

[0036] 10-housing; 11-shell; 12-outer cover; 121-first through hole; 122-second through hole;

[0037] 20-connecting piece; 21-connecting body; 211-detection cavity; 212-ink outlet; 213-guiding channel; 22-detection cap; 23-spring; 24-cover cap; 241-avoidance hole;

[0038] 30-ink bag; 31-first bag; 311-first bag body; 312-first edge; 3121-first fixing portion; 3122-first opening; 312a-first side; 312b-second side; 321c-first welding line; 32-second bag; 321-second bag body; 322-second edge; 3221-second fixing portion; 3222-second opening; 322a-third side; 322b-fourth side; 322c-second welding line; 322d-third welding line; 33-first thermal insulation layer; 34-second thermal insulation layer. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0043] In the above description, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0044] As described in the background technology, when the ink cartridge is in a high-temperature storage environment, the ink is heated, the bubbles in the ink overflow, and a large number of bubbles are stored in the single-layer ink bag, which may cause the ink amount detection to fail or the print head to be damaged. The inventor has found that the reason for this problem is that the single-layer ink bag has only one layer of bag, which cannot effectively prevent the external heat from being transmitted to the ink in the single-layer ink bag. When the ink cartridge is in a high-temperature storage environment, the ink is heated, the bubbles in the ink overflow, and a large number of bubbles are stored in the single-layer ink bag. The bubbles overflow into the detection cavity of the connector, causing the ink amount detection to fail; when the ink cartridge is in a high-temperature storage environment, the ink is heated, the bubbles in the ink overflow, and a large number of bubbles are stored in the single-layer ink bag. The bubbles overflow into the print head, causing the print head to be damaged. In addition, when the ink cartridge is in a high-temperature storage environment, the ink in the single-layer ink bag may evaporate, resulting in a reduction in the amount of ink, a reduction in the number of printed pages, an increase in ink concentration, and a blockage in the print head.

[0045] In order to solve the above problems, an embodiment of the utility model provides an ink cartridge, wherein the ink bag includes a first bag and a second bag, the first bag is arranged in the second bag, a first thermal insulation layer is formed between the first bag and the second bag of the ink bag, and a second thermal insulation layer is arranged on the outside of the second bag, so that the ink bag forms a double-layer thermal insulation, which can effectively prevent external heat from being transmitted to the ink in the first bag, thereby preventing the bubbles in the ink of the ink cartridge from overflowing into the detection cavity of the connecting part in a high temperature environment, causing the ink amount detection to fail, and also preventing the bubbles in the ink of the ink cartridge from overflowing into the print head in a high temperature environment, causing the print head to be damaged, thereby ensuring that the ink cartridge provides ink to the device body of the printing device.

[0046] The ink bag forms a double layer of insulation, which can also prevent the evaporation of ink in the ink cartridge in a high temperature environment, thereby avoiding a reduction in ink volume, a reduction in the number of printed pages, an increase in ink concentration, and clogging of the print head.

[0047] The ink cartridge provided by the embodiment of the utility model is described in detail below in conjunction with specific embodiments.

[0048] The embodiment of the utility model provides an ink cartridge which can provide ink to a device body of a printing device.

[0049] See also Figure 1 and Figure 2 As shown, the ink cartridge includes a housing 10 , a connecting member 20 and an ink bag 30 , and the connecting member 20 and the ink bag 30 are installed in the housing 10 .

[0050] The length direction of the ink cartridge is the X-axis direction, the width direction of the ink cartridge is the Y-axis direction, and the thickness direction of the ink cartridge is the Z-axis direction. The X-axis, Y-axis and Z-axis are perpendicular to each other.

[0051] See also Figure 1 As shown, the housing 10 includes a shell 11 and an outer cover 12, and the outer cover 12 is detachably connected to the shell 11. In some examples, the outer cover 12 is snap-connected to the shell 11, the connector 20 is stuck between the shell 11 and the outer cover 12, the ink bag 30 is connected to the connector 20, and the ink bag 30 is located in the shell 11.

[0052] See also Figure 2 and Figure 3 As shown, the connecting member 20 includes a connecting body 21 , a detection cap 22 , a spring 23 and a cover cap 24 .

[0053] The connection body 21 is fixedly connected to the cap 24. For example, the cap 24 and the connection body 21 can be fixedly connected by welding or bonding.

[0054] The cover cap 24 presses the detection cap 22 onto the connection body 21 , so that the detection cap 22 can be fixed on the connection body 21 .

[0055] The cover cap 24 has an escape hole 241 , and the detection cap 22 can be exposed to the outside of the cover cap 24 through the escape hole 241 .

[0056] The material of the detection cap 22 can be silicone or rubber.

[0057] The detection cap 22 and the connecting body 21 enclose a detection cavity 211. The spring 23 is located in the detection cavity 211, and the spring 23 is connected between the detection cap 22 and the connecting body 21.

[0058] The device body of the printing device has a detection rod, which is used to detect the amount of ink in the ink cartridge. When the ink cartridge is installed in the device body of the printing device, the detection rod provided on the device body acts on the detection cap 22, the detection cap 22 contacts the detection rod, and the detection rod presses the detection cap 22 with the same force. After the detection cap 22 is pressed by the detection rod, the detection cap 22 is deformed and the spring 23 is compressed at the same time. The position of the detection rod changes with the deformation of the detection cap 22. The printing device confirms whether the ink in the ink bag 30 is exhausted by detecting the position of the detection rod.

[0059] When the ink cartridge is removed from the device body of the printing device, the detection cap 22 returns to the initial state under the elastic force of the spring 23. The initial state of the detection cap 22 is the state of the detection cap 22 when the ink cartridge is not installed in the device body of the printing device.

[0060] The connecting body 21 has an ink outlet 212 and a flow guiding channel 213. The flow guiding channel 213 is communicated with the ink bag 30, and the flow guiding channel 213 is communicated with the ink outlet 212 through the detection cavity 211.

[0061] The outer cover 12 has a first through hole 121 (see Figure 1 When the ink cartridge is installed in the device body of the printing device, the detection rod provided on the device body can pass through the first through hole 121 to act on the detection cap 22.

[0062] The outer cover 12 has a second through hole 122 (see Figure 1 When the ink cartridge is installed in the device body of the printing device, the ink needle provided on the device body can pass through the second through hole 122 and be inserted into the ink outlet 212 .

[0063] See also Figure 2 , Figure 3 and Figure 4 As shown, the ink bag 30 includes a first bag 31 and a second bag 32, the first bag 31 is arranged in the second bag 32, the first bag 31 and the second bag 32 are sealed and connected to the connector 20, that is, the first bag 31 is sealed and connected to the connector 20, the second bag 32 is sealed and connected to the connector 20, the first bag 31 stores ink, and the first bag 31 is connected to the detection chamber 211.

[0064] In some examples, the first bag 31 and the second bag 32 are welded to the connector 20 so that the first bag 31 and the second bag 32 are sealed and connected to the connector 20 .

[0065] See 4 and Figure 5 As shown, a first heat insulating layer 33 is formed between the first bag 31 and the second bag 32 , and the first heat insulating layer 33 is used to prevent external heat from being transferred to the ink in the first bag 31 .

[0066] A second heat insulating layer 34 is disposed outside the second bag 32 , and the second heat insulating layer 34 is used to prevent external heat from being transmitted to the first bag 31 inside the second bag 32 .

[0067] A first thermal insulation layer 33 is formed between the first bag 31 and the second bag 32 of the ink bag 30 of the ink cartridge provided by the embodiment of the utility model, and a second thermal insulation layer 34 is arranged on the outside of the second bag 32, so that the ink bag 30 forms a double-layer thermal insulation, which can effectively prevent external heat from being transmitted to the ink in the first bag 31, thereby preventing the bubbles in the ink of the ink cartridge from overflowing into the detection cavity 211 of the connector 20 in a high temperature environment, causing the ink amount detection to fail, and can also prevent the bubbles in the ink of the ink cartridge from overflowing into the print head in a high temperature environment, causing the print head to be damaged, thereby ensuring that the ink cartridge provides ink to the device body of the printing device.

[0068] In a possible implementation, a third heat insulation layer is formed between the second bag 32 and the outer shell 10 .

[0069] The second bag 32 is not in contact with the outer shell 10 , and air is filled between the second bag 32 and the outer shell 10 to form a third heat insulation layer. The second heat insulation layer 34 is used to prevent external heat from being transmitted to the second bag 32 .

[0070] In a possible implementation manner, the first bag 31 and the second bag 32 enclose a sealed space, and the sealed space is filled with a heat-insulating gas to form a first heat-insulating layer 33 .

[0071] When the first bag 31 and the second bag 32 are sealed and connected to the connecting piece 20 , the first bag 31 and the second bag 32 enclose a sealed space.

[0072] The insulating gas includes but is not limited to air, carbon dioxide or nitrogen.

[0073] Figure 6 The state of the first bag 31 in the figure is a state in which the first bag 31 is not connected to the second bag 32 .

[0074] In one possible implementation, see Figure 6 As shown, the first bag 31 includes a first bag body 311 and a first edge 312 connected to each other. The first edge 312 faces the connector 20 and is connected to the connector 20 .

[0075] The material of the first bag 31 may be polypropylene. The first bag 31 may be formed by welding two polypropylene sheets. The two polypropylene sheets of the first bag 31 are arranged opposite to each other in the thickness direction of the ink cartridge. Figure 6 As shown, the two polypropylene sheets of the first bag 31 are welded and connected at one end in the +Y axis direction. The two polypropylene sheets of the first bag 31 are welded and connected at one end in the -Y axis direction. The two polypropylene sheets of the first bag 31 are welded and connected at one end in the -X axis direction.

[0076] In other embodiments, the first bag 31 can be formed by folding a polypropylene sheet and then welding it. Specifically, after the polypropylene sheet is folded, one end in the +Y axis direction is welded and connected, and one end in the -Y axis direction is welded and connected.

[0077] The first edge 312 is located at one end of the first bag body 311 in the +X axis direction.

[0078] See also Figure 6 As shown, the first edge 312 has a first fixing portion 3121 and a first opening 3122 connected to each other, and the first opening 3122 is connected to the connecting member 20 .

[0079] See also Figure 7 As shown, the first edge 312 includes a first side 312a and a second side 312b. The first side 312a is a portion of one polypropylene sheet of the first bag 31, and the second side 312b is a portion of another polypropylene sheet of the first bag 31.

[0080] The first side 312 a and the second side 312 b are welded to each other at the portion of the first fixing portion 3121 of the first edge 312 .

[0081] See also Figure 7 As shown, a first welding line 321 c is formed between the first side 312 a and the second side 312 b .

[0082] The first edge 312a and the second edge 312b are welded to the first opening 3122 of the first edge 312, that is, the first opening 3122 of the first edge 312 is welded to the connecting member 20. In this way, the first bag 31 forms an ink chamber for storing ink.

[0083] When the ink cartridge is produced, the first bag 31 is vacuum treated and then filled with ink, which effectively prevents external air from entering the ink chamber.

[0084] See also Figure 8As shown, the second bag 32 includes a second bag body 321 and a second edge 322 connected to each other. The second edge 322 faces the connector 20 . There is a gap between the second bag body 321 and the first bag body 311 . The second edge 322 is connected to the connector 20 .

[0085] The material of the second bag 32 may be polypropylene. The second bag 32 may be formed by welding two polypropylene sheets. The two polypropylene sheets of the second bag 32 are arranged opposite to each other in the thickness direction of the ink cartridge.

[0086] The two polypropylene sheets of the second bag 32 are welded together at one end in the +Y axis direction. The two polypropylene sheets of the second bag 32 are welded together at one end in the -Y axis direction. The two polypropylene sheets of the second bag 32 are welded together at one end in the -X axis direction.

[0087] In other embodiments, the second bag 32 can be formed by folding a polypropylene sheet and then welding it. Specifically, after the polypropylene sheet is folded, one end in the +Y axis direction is welded and connected, and one end in the -Y axis direction is welded and connected.

[0088] The second edge 322 is located at one end of the second bag body 321 in the +X axis direction.

[0089] Figure 8 The state of the second bag 32 in the figure is a state when the second bag 32 is not connected to the first bag 31.

[0090] See also Figure 8 As shown, the second edge 322 has a second fixing portion 3221 and a second opening 3222 connected to each other, and the second opening 3222 is connected to the connecting member 20 .

[0091] The second edge 322 includes a third side 322a and a fourth side 322b (see Figure 7 The third side 322a is a part of one polypropylene sheet of the second bag 32. The fourth side 322b is a part of another polypropylene sheet of the second bag 32.

[0092] The portion of the third side 322a located at the second fixing portion 3221 of the second edge 322 is welded to the first side 312a, and a second welding line 322c is formed between the third side 322a and the first side 312a.

[0093] The portion of the fourth side 322b located at the second fixing portion 3221 of the second edge 322 is welded to the second side 312b. A third welding line 322d is formed between the fourth side 322b and the second side 312b.

[0094] Parts of the third side 322 a and the fourth side 322 b located at the second opening 3222 of the second edge 322 are welded to the connecting member 20 , that is, the second opening 3222 of the second edge 322 is welded to the connecting member 20 .

[0095] The space between the first bag 31 and the second bag 32 is filled with air, and the first bag body 311 of the first bag 31 and the second bag body 321 of the second bag 32 are not in contact, thereby forming a first heat insulating layer 33. In some examples, after the space between the first bag 31 and the second bag 32 is filled with air, the first bag 31 and the second bag 32 are sealed and connected to the connector 20, and then the first bag 31 is filled with ink to prevent the space between the first bag 31 and the second bag 32 from being squeezed after the first bag 31 expands, thereby reducing the thickness of the first heat insulating layer 33.

[0096] Furthermore, in the thickness direction of the ink cartridge, the projection of the first welding line 321c, the projection of the second welding line 322c and the projection of the third welding line 322d overlap. This arrangement avoids partial contact between the first bag body 311 of the first bag 31 and the second bag body 321 of the second bag 32, thereby ensuring that the first heat insulation layer 33 can perform heat insulation and effectively prevent external heat from being transmitted to the ink in the first bag 31.

[0097] In a possible implementation, the second heat insulating layer 34 may be a polyester environmentally friendly composite layer, and the polyester environmentally friendly composite layer is coated on the outside of the second bag 32 .

[0098] The materials of the polyester environmentally friendly composite layer include polyurethane resin, ethyl acetate, n-propyl acetate, isopropyl alcohol, color powder and additives.

[0099] In the embodiments of the present application, the specific selection of the color powder is not limited, as long as it can color the polyester environmentally friendly composite layer.

[0100] In the embodiments of the present application, the specific selection of the auxiliary agent is not limited, as long as it can disperse and dissolve other materials of the polyester environmentally friendly composite layer.

[0101] In other embodiments, the second heat insulating layer 34 may be made of an organic insulation board, and the second heat insulating layer 34 is bonded to the outside of the second bag 32. The organic insulation board includes but is not limited to molded polystyrene board, extruded polystyrene board, phenolic resin board or polyurethane board.

[0102] The second heat insulating layer 34 can also be made of aluminum silicate mixed with polyethylene (PE) masterbatch. In the embodiment of the present application, the specific selection of PE masterbatch is not limited, as long as the heat insulating properties are met.

[0103] The second heat insulation layer 34 may also be formed by mixing PE masterbatch, graphene and aluminum silicate.

[0104] The second heat insulation layer 34 can also be made of silica aerogel, and the second heat insulation layer 34 is coated on the outside of the second bag 32 .

[0105] The second heat insulating layer 34 can also be a polyester film base film layer, which is coated on the outside of the second bag 32. The polyester film base film layer includes a base film and a heat insulating coating. The base film layer is made of polyester chips, polyethylene terephthalate, butyl acrylate, light stabilizer, antioxidant and dispersant. The material of the heat insulating coating includes rare earth nano heat insulating agent, waterborne polyurethane dispersion, polyester emulsion, crosslinking agent and deionized water.

[0106] The second heat insulating layer 34 can also be made of polyacrylate or polyurethane glue, and the second heat insulating layer 34 is coated on the outside of the second bag 32 .

[0107] The second heat insulating layer 34 can also be made of metal material, and the second heat insulating layer 34 is plated on the outside of the second bag 32. The metal material includes but is not limited to gold, silver, copper, aluminum, tin, nickel, germanium, gold-silver alloy, platinum-palladium alloy, copper-nickel alloy, iron-platinum alloy, palladium-ruthenium alloy, silver-copper alloy or titanium-nickel alloy.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An ink cartridge that can provide ink to a device body of a printing device, characterized in that: include: A connecting piece, wherein the connecting piece has an ink outlet and a detection cavity; An ink bag, the ink bag comprising a first bag and a second bag, the first bag being arranged in the second bag, the first bag and the second bag being sealed and connected to the connecting piece, the first bag storing ink, and the first bag being connected to the detection cavity; A first heat insulating layer is formed between the first bag and the second bag, and a second heat insulating layer is arranged outside the second bag.

2. The ink cartridge according to claim 1, characterized in that: The first bag and the second bag form a sealed space, and the sealed space is filled with a heat-insulating gas to form the first heat-insulating layer.

3. The ink cartridge according to claim 2, characterized in that: The insulating gas includes air.

4. The ink cartridge according to claim 2, characterized in that: The second heat insulation layer is an environmentally friendly polyester composite layer, and the environmentally friendly polyester composite layer is coated on the outside of the second bag.

5. The ink cartridge according to any one of claims 1 to 4, characterized in that: The first bag comprises a first bag body and a first edge connected to each other, the first edge faces the connecting piece, and the first edge is connected to the connecting piece; The second bag comprises a second bag body and a second edge which are connected to each other, wherein the second edge faces the connecting piece, a gap is provided between the second bag body and the first bag body, and the second edge is connected to the connecting piece.

6. The ink cartridge according to claim 5, characterized in that: The first edge has a first fixing portion and a first opening connected to each other, and the first opening is connected to the connecting member; The second edge has a second fixing portion and a second opening connected to each other, and the second opening is connected to the connecting member.

7. The ink cartridge according to claim 6, characterized in that: A first welding line is formed between the first side and the second side of the first edge, a second welding line is formed between the third side of the second edge and the first side of the first edge, and a third welding line is formed between the fourth side of the second edge and the second side of the first edge; In the thickness direction of the ink cartridge, a projection of the first welding line, a projection of the second welding line, and a projection of the third welding line overlap.

8. The ink cartridge according to claim 6, characterized in that: The first opening and the second opening are both connected to the connecting member by welding.

9. The ink cartridge according to any one of claims 1 to 4, characterized in that: It also includes a shell, in which the connecting piece and the ink bag are installed.

10. The ink cartridge according to claim 9, characterized in that: A third heat insulating layer is formed between the second bag and the outer shell.

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