Coffee pot

Abstract

The utility model provides a coffee pot which comprises a pot body, a primer layer, a pattern printing layer and a temperature change printing layer. Wherein the primer layer is arranged on the outer surface of the kettle body; the pattern printing layer covers the primer layer; and the temperature change printing layer covers the pattern printing layer. Compared with the prior art, in the embodiment of the utility model, the temperature-variable printing layer is additionally printed on the conventional coffee pot, so that the temperature-variable printing layer can cover part of the pattern printing layer. When the coffee pot is used, the temperature gradually rises, and the temperature change printing layer also changes along with the temperature rise, so that the temperature change printing layer and the pattern printing layer are combined to generate different pattern changes, and the technical problem that the appearance of the coffee pot is single is solved.

Description

Technical Field

[0001] This utility model belongs to the field of food utensils technology, and in particular relates to a coffee pot. Background Technology

[0002] A coffee maker is a food appliance used for brewing coffee. It includes many types such as French press, siphon, moka pot, drip pot, and pour-over pot. Each type of coffee maker has a unique design and is highly recognizable.

[0003] For the same type of coffee maker, the appearance is relatively uniform, and the differences in appearance between coffee makers from different brands are small, making it difficult to meet user needs. Utility Model Content

[0004] The present invention aims to provide a coffee maker to solve the technical problem that the appearance of existing coffee makers is monotonous and fails to meet user needs.

[0005] This utility model provides a coffee pot, comprising:

[0006] The body of the pot;

[0007] A primer layer is applied to the outer surface of the pot.

[0008] A pattern printing layer covers the primer layer;

[0009] A thermochromic printing layer is applied over the pattern printing layer.

[0010] Optionally, the coffee pot also includes a decorative coating, with the hot stamping layer covering the patterned printing layer.

[0011] Optionally, the coffee pot further includes a luminescent layer that covers the patterned printing layer.

[0012] Optionally, the primer layer includes a first graphic area, and the pattern printing layer covers the first graphic area;

[0013] The pattern printing layer includes a second graphic area, and the thermochromic printing layer covers the second graphic area. The thermochromic printing layer is configured to have multiple display states according to temperature to present multiple graphics on the outer surface of the kettle.

[0014] Optionally, the pattern printing layer includes a temperature-changing pattern portion located within the second pattern area and a normal temperature pattern portion located outside the second pattern area. The outer surface of the kettle body may display only the normal temperature pattern portion or both the normal temperature pattern portion and the temperature-changing pattern portion, depending on the display state of the temperature-changing display layer.

[0015] Optionally, the thermochromic printing layer includes a colored state and a transparent state, wherein:

[0016] When the thermochromic printing layer is in the colored state, the thermochromic printing layer covers the temperature-changing graphic portion located in the second graphic area, so that only the normal temperature graphic portion is presented on the outer surface of the kettle.

[0017] When the thermochromic printing layer is transparent, the pattern printing layer is fully presented, so that the outer surface of the kettle simultaneously presents the normal temperature pattern and the thermochromic pattern.

[0018] Optionally, the thermochromic printing layer gradually changes from the colored state to the transparent state as the temperature rises.

[0019] Optionally, the color change range of the thermochromic printing layer is from 25 degrees Celsius to 78 degrees Celsius.

[0020] Optionally, the thermochromic printing layer includes a first color state and a second color state. The thermochromic printing layer is configured to reversibly change from the first color state to the second color state in response to temperature changes, so that the second graphic area undergoes an appearance change and is recombined with the first graphic area to form a new appearance.

[0021] Optionally, it may also include a decorative coating that covers a portion of the patterned printing layer along the contour of the second graphic region and / or the contour of the first graphic region covers a portion of the primer layer and abuts the edge of the patterned printing layer.

[0022] Compared with the prior art, in this embodiment of the invention, an additional thermochromic printing layer is printed on a conventional coffee pot, allowing the thermochromic printing layer to cover part of the pattern printing layer. As the coffee pot is used, the temperature gradually increases, and the thermochromic printing layer changes accordingly, resulting in different graphic variations when combined with the pattern printing layer. This solves the technical problem of the coffee pot having a monotonous appearance. Attached Figure Description

[0023] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings do not constitute a limitation on scale.

[0024] Figure 1 A perspective view of a coffee pot provided in an embodiment of this application;

[0025] Figure 2 A schematic diagram of the coating structure of a coffee pot provided in an embodiment of this application;

[0026] Figure 3 for Figure 1 A three-dimensional schematic diagram of the temperature-varying printing layer in a transparent state;

[0027] Figure 4 for Figure 2 A schematic diagram of a coating structure where the temperature-varying printing layer is transparent;

[0028] Figure 5 A schematic diagram showing the combination of a room-temperature graphic portion and a temperature-varying graphic portion when the thermochromic printing layer is in a colored state, according to an embodiment of this application.

[0029] Figure 6 for Figure 5 A schematic diagram showing the combination of the room temperature graphic section and the variable temperature graphic section when the medium temperature variable printing layer is in a transparent state.

[0030] Figure 7 for Figure 2 A schematic diagram of the coating structure with added decorative coating;

[0031] Figure 8 A schematic diagram of the graphic structure for adding a decorative coating;

[0032] Figure 9 for Figure 8 A schematic diagram of the graphic structure when the temperature-sensitive printing layer becomes transparent.

[0033] Figure 10 for Figure 7 A schematic diagram of the coating structure with added luminescent layer;

[0034] Figure 11 for Figure 8 A schematic diagram of the graphic structure with added luminescent layer.

[0035] The attached figures are labeled as follows:

[0036] 100. Coffee pot; 10. Pot body; 11. Outer surface of the pot; 12. Handle; 13. Opening;

[0037] 20. Primer layer; 201. First graphic area;

[0038] 30. Pattern printing layer; 301. Second graphic area; 31. Room temperature graphic section; 32. Variable temperature graphic section;

[0039] 40. Thermochromic printing layer;

[0040] 50. Decorative coating;

[0041] 60. Phosphorescent layer. Detailed Implementation

[0042] To facilitate understanding of this utility model, the following section provides a more detailed description of it in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "connected" to another element, it can be directly on the other element, or one or more intermediate elements can exist between them. The terms "upper," "lower," "left," "right," "upper end," "lower end," "top," and "bottom," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention.

[0044] Please refer to the following: Figure 1 and Figure 2 , Figure 1 This is a perspective view of a coffee pot 100 provided in one embodiment of this application. Figure 2 This is a schematic diagram of the coating structure of a coffee pot 100 according to an embodiment of this application. The coffee pot 100 includes a pot body 10, on which a primer layer 20, a pattern printing layer 30, and a thermochromic printing layer 40 are sequentially coated. The primer layer 20 is directly applied to the outer surface 11 of the pot body 10, the pattern printing layer 30 covers the primer layer 20, and the thermochromic printing layer 40 covers the pattern printing layer 30. Compared with the prior art, in this embodiment of the present invention, the pattern printing layer 30 can be printed with a pattern, and the thermochromic printing layer 40 covers the pattern printing layer 30 to cover part of the pattern. When the coffee pot 100 is used, the temperature gradually increases, and the thermochromic printing layer 40 also changes accordingly, causing different graphic changes to occur when the thermochromic printing layer 40 and the pattern printing layer 30 are combined, making the appearance of the coffee pot 100 varied.

[0045] The kettle body 10 is a cavity with an opening 13 formed by the surrounding connection of side walls and a bottom wall. The cavity is used to hold liquids, such as mineral water. Specifically, the side of the side wall and bottom wall of the kettle body 10 opposite to the cavity is the outer surface 11 of the kettle body. In some embodiments, the kettle body 10 is provided with a handle 12, which is fixed to the side wall of the kettle body 10. The handle 12 is usually designed as a semi-circular arc shape for easy gripping by the user. In other embodiments, the kettle body 10 is also provided with a spout (not shown), which is usually fixed to the side wall of the kettle body opposite to the handle 12, so that the user can pour out the liquid in the kettle body. In other embodiments, a kettle lid may also be provided at the opening 13 at the top of the kettle body. The kettle lid is detachably installed on the opening 13. When the kettle lid is open, liquid can be poured into the kettle body through the opening 13; when the kettle lid is closed, it can prevent external dust from entering the kettle body through the opening 13, preventing the liquid in the kettle body from being contaminated.

[0046] A primer layer 20 is applied to the outer surface 11 of the pot body 10 to decorate the pot body 10 while preventing it from being corroded by the outside environment. In a specific embodiment, the primer layer 20 is applied to the outer surface 11 of the side wall and bottom wall of the pot body 10, and the primer layer 20 is white to highlight the pattern of the pattern printing layer 30.

[0047] A pattern printing layer 30 covers the primer layer 20 to apply a pre-designed pattern to the outer surface 11 of the pot body 10. Specifically, the pattern printing layer 30 is a printing layer obtained by printing using yellow, red, blue, and black pigments according to the subtractive color mixing principle. When using these four colors for printing, the printing method is called four-color printing. In some other embodiments, the pigments are not limited to yellow, red, blue, and black; other colors can also be used for printing, which is called spot color printing. It is understood that in the embodiments of this application, the printing method can be either four-color printing or spot color printing, as long as the corresponding pattern can be printed on the primer layer 20, and there is no limitation on this.

[0048] A thermochromic printing layer 40 covers the pattern printing layer 30 to partially obscure the pattern printed on the pattern printing layer 30. The thermochromic printing layer 40 is printed with a thermochromic coating, which is a capsule-shaped material comprising an internal color-changing material and a protective material surrounding the color-changing material. When the temperature changes within a certain color-changing range, the thermochromic coating reversibly changes from its initial color (e.g., blue) to another color (e.g., black) to achieve the color-changing function. When the temperature returns to the initial temperature, the color of the thermochromic coating also changes accordingly to the initial color. The specific color-changing principle of the thermochromic coating will not be explained in detail here.

[0049] The thermochromic printing layer 40 allows the patterns displayed on the pattern printing layer 30 to exhibit different variations, thereby enhancing the overall aesthetic appeal of the coffee pot 100. For example, the sky pattern printed on the pattern printing layer 30 is covered by the thermochromic printing layer 40, which is black at room temperature and blue or white at high temperatures. When the coffee pot 100 is in use and continuously heated, the color of the sky pattern changes from black to blue or white to represent the sunrise. Similarly, when different thermochromic coatings are used for the thermochromic printing layer 40, its room temperature and high temperature states can be set to different colors to represent the sunset. In short, through the graphic of the pattern printing layer 30 and the color changes of the thermochromic printing layer 40, the graphics printed on the exterior of the coffee pot 100 can be transformed from a static expression to a dynamic expression, better representing the landscape, time, weather, etc., represented by the graphics.

[0050] Please compare and refer to the following: Figure 1 and Figure 3 as well as Figure 2 and Figure 4 , Figure 3 for Figure 1 A three-dimensional schematic diagram of a temperature-varying printing layer in a transparent state. Figure 4 for Figure 2 A schematic diagram of the coating structure where the thermochromic printing layer 40 is transparent. Specifically, in this embodiment, the primer layer 20 includes a first graphic area 201, a pattern printing layer 30 covers the first graphic area 201, the pattern printing layer 30 includes a second graphic area 301, and the thermochromic printing layer 40 covers the second graphic area 301. More specifically, the pattern printing layer 30 includes a temperature-changing graphic portion 32 located within the second graphic area 301 and a normal temperature graphic portion 31 located outside the second graphic area 301. Depending on the display state of the thermochromic printing layer 40, the outer surface 11 of the kettle body 10 may only display the normal temperature graphic portion 31 or both the normal temperature graphic portion 31 and the temperature-changing graphic portion 32. It is understood that when the thermochromic printing layer 40 on the second graphic area 301 is in a colored state, the user can only see the thermochromic printing layer 40 and part of the partially obscured pattern printing layer 30, i.e., the normal temperature graphic portion 31, and the visual effect is as follows: Figure 1 As shown. When the thermochromic printing layer 40 on the second graphic area 301 becomes transparent, the user can directly see the pattern printing layer 30 covering the thermochromic printing layer 40, that is... Figure 3 The visual effect shown.

[0051] The thermochromic printing layer 40 has multiple display states to interact with the room-temperature graphic portion 31 that is not covered by the thermochromic printing layer 40. Specifically, the display states include a colored state and a transparent state. When the thermochromic printing layer 40 is in the colored state, it covers the temperature-changing graphic portion 32 on the pattern printing layer 30. At this time, the user cannot see the temperature-changing graphic portion 32, but can only see the pattern of the colored thermochromic printing layer 40 and the surrounding room-temperature graphic portion 31. When the thermochromic printing layer 40 is in the transparent state, although it covers the temperature-changing graphic portion 32, it cannot optically obscure the temperature-changing graphic portion 32 of the pattern printing layer 30. The user can see the complete pattern printing layer 30, that is, the room-temperature graphic portion 31 and the temperature-changing graphic portion 32 form a new pattern combination.

[0052] Please compare and refer to the following: Figure 5 and Figure 6 , Figure 5 This is a schematic diagram illustrating the combination of the room-temperature graphic portion 31 and the temperature-varying graphic portion 32 when the thermochromic printing layer 40 is in a colored state, according to an embodiment of this application. Figure 6 for Figure 5 This is a schematic diagram showing the combination of the room-temperature graphic portion 31 and the temperature-changing graphic portion 32 when the thermochromic printing layer 40 is transparent. In this embodiment, the room-temperature graphic portion 31 consists of white leaf outlines and leaves, while the temperature-changing graphic portion 32 consists of various colorful animals and green leaf veins. The thermochromic printing layer 40 is black and covers the temperature-changing graphic portion 32. When the coffee pot 100 is at room temperature, the black thermochromic printing layer 40 covers the various animals and leaf veins, and the outer surface of the coffee pot 100 appears as a black and white jungle. When the coffee pot 100 is at a high temperature, the thermochromic printing layer 40 changes from black to transparent, and the colorful temperature-changing graphic portion 32 covered by the thermochromic printing layer 40 is fully revealed. At this time, the leaves change from black and white to green and white, and the various animals change from only black outlines to having colorful patterns. The colorful temperature-changing graphic portion 32 combines with the white room-temperature graphic portion 31, making the outer surface of the coffee pot 100 appear as a colorful jungle. During the heating process of the coffee pot 100, the pattern on the coffee pot 100 changes from a desolate black and white jungle to a colorful and vibrant jungle, thereby enhancing the aesthetic appeal of the coffee pot 100.

[0053] It should be noted that the thermochromic printing layer 40 is a dark color in its colored state to better mask the temperature-changing graphic portion 32 of the pattern printing layer 30. For example, when the thermochromic printing layer 40 is black in its colored state, light is easily absorbed by the thermochromic printing layer 40, preventing light from reaching the pattern printing layer 30 and thus reflecting to form the temperature-changing graphic portion 32. Conversely, if the thermochromic printing layer 40 is a light color, such as yellow, its light reflection effect is weaker, and some light may pass through the thermochromic printing layer 40 and reflect part of the color of the pattern printing layer 30, causing the second graphic area 301 to simultaneously have the color of the temperature-changing graphic portion 32 and the color of the thermochromic printing layer 40 superimposed, producing an undesirable visual effect.

[0054] Furthermore, in order to ensure that the thermochromic printing layer 40 can effectively shield the temperature-changing graphic portion 32 of the pattern printing layer 30, the thickness of the thermochromic printing layer 40 needs to be controlled. Specifically, since the thermochromic printing layer 40 is extremely thin, it is difficult to accurately measure its thickness. However, the thickness of the thermochromic printing layer 40 can be determined by controlling the mesh count of the printing mesh. In a specific embodiment, when the mesh count of the printing mesh of the thermochromic printing layer 40 is controlled to be between 100 and 200 mesh, the thickness and density of the thermochromic printing layer 40 are sufficient to produce a suitable shielding effect at room temperature.

[0055] It should also be noted that the thermochromic printing layer 40 should gradually change from a colored state to a transparent state as the temperature rises. Conversely, as the temperature decreases, its display state can also change from transparent to colored. This temperature-dependent change in display state is reversible, meaning the coffee pot 100 can change its surface pattern multiple times according to temperature variations. Specifically, this temperature range should match the operating temperature of the coffee pot 100. For example, by selecting a thermochromic coating and setting the color-changing range to 25 degrees Celsius to 78 degrees Celsius, the pattern remains stable when the water in the coffee pot 100 is at room temperature, and then remains stable under another pattern as the water is heated to boiling.

[0056] In other embodiments, the display states of the thermochromic printing layer 40 include a first color state and a second color state. Specifically, the first color state and the second color state are different types of colors, such as white and green, red and black, which can be determined by the design pattern. The transition between the first color state and the second color state also depends on the temperature change. That is, when the coffee pot 100 is at room temperature, it is in the first color state, and the temperature-changing pattern represented by the thermochromic printing layer 40 and the room temperature pattern represented by the pattern printing layer 30 combine to form one appearance; when the coffee pot 100 is at a high temperature, it is in the second color state, and the temperature-changing pattern represented by the thermochromic printing layer 40 and the room temperature pattern represented by the pattern printing layer 30 combine to form another appearance, thereby enabling the coffee pot 100 to present different overall appearances with temperature.

[0057] Please refer to the following: Figure 7 , Figure 8 and Figure 9 , Figure 7 for Figure 2 A schematic diagram of the coating structure with added decorative coating. Figure 8 A schematic diagram of the graphic structure for adding a decorative coating. Figure 9 for Figure 8 A schematic diagram of the graphic structure when the temperature-varying printing layer becomes transparent. In some embodiments, the coffee pot 100 further includes a decorative coating 50, which covers the pattern printing layer 30 and is used to further decorate the room temperature graphic portion 31 and the temperature-varying graphic portion 32 printed on the pattern printing layer 30. Specifically, the decorative coating 50 may be disposed on the primer layer 20 along the contour of the first graphic area 201 and abut against the edge of the pattern printing layer 30, so that the contour of the room temperature graphic portion 31 becomes a high-brightness gold, improving the overall aesthetics of the room temperature graphic portion 31. In some embodiments, the decorative coating 50 may also be disposed on a portion of the pattern printing layer 30 along the contour of the second graphic area 301, so that the contour of the temperature-varying graphic portion 32 becomes a high-brightness gold, improving the overall aesthetics of the temperature-varying graphic portion 32. In other embodiments, the decorative coating 50 may also be disposed along the contours of both the first graphic area 201 and the second graphic area 301 simultaneously, so as to simultaneously improve the overall aesthetics of both the temperature-varying graphic portion 32 and the room temperature graphic portion 31.

[0058] Please see Figure 10 and Figure 11 , Figure 10 for Figure 7 A schematic diagram of the coating structure with added luminescent layer. Figure 11 for Figure 8A schematic diagram of the graphic structure with added luminescent layer is shown below. In some embodiments, the coffee pot 100 further includes a luminescent layer 60, which covers the pattern printing layer 30. Specifically, the luminescent layer 60 is made of fluorescent material, which can absorb and store light energy. When the light source is turned off, for example, when the coffee pot 100 is in the dark, the luminescent layer 60 can slowly release the stored light energy in the form of fluorescence, continuously emitting light, so that the coffee pot 100 can exhibit a unique appearance effect in the dark. Specifically, in this embodiment, the luminescent layer 60 and the thermochromic printing layer 40 are printed together on the pattern printing layer 30, so that some areas of the outer surface of the coffee pot 100 can emit light in the dark (e.g., the logo can emit light), and some areas can present different colors with temperature changes (e.g., the graphic area surrounding the logo).

[0059] The specific printing method on the coffee pot 100 is as follows: First, the printing dyes for each layer need to be prepared. For the pattern printing layer and the thermochromic printing layer, the corresponding patterns need to be designed in advance on the printing screen. Before printing, the coffee pot 100 needs to be coated with a primer at least twice, with at least one hour between each coating to ensure the primer layer 20 solidifies on the outer surface 11 of the pot. After the primer layer 20 is applied, the various accessories of the coffee pot 100, such as the handle and spout, are installed. Then, the pattern printing layer 30 is printed on the primer layer 20 using a screen printing machine, printing the pre-designed room temperature graphic portion 31 and thermochromic graphic portion 32 onto the first graphic area 201. This process also requires at least two printings, with one hour between each printing. During the printing of the pattern printing layer 30, the brightness, transparency, drying speed, and printing area of ​​the ink need to be comprehensively considered to ensure that the printed room temperature graphic portion 31 and thermochromic graphic portion 32 meet the printing quality requirements. Finally, the thermochromic printing layer 40 is printed on the second graphic area 301 to cover the thermochromic graphic portion 32. In some embodiments, a decorative coating 50 also needs to be printed. The printing step of the decorative coating 50 is between the pattern printing layer 30 and the thermochromic printing layer 40, and the position is set on the outline of the first graphic area 201 and / or the outline of the second graphic area 301 according to the pattern design. The specific details will not be elaborated further.

[0060] In summary, the coffee maker 100 provided in this application sequentially prints a primer layer 20, a pattern printing layer 30, and a thermochromic printing layer 40 on the outer surface 11 of a conventional pot body 10. The thermochromic printing layer 40 partially obscures the temperature-changing graphic portion 32 printed by the pattern printing layer 30, leaving only the normal-temperature graphic portion 31 and the thermochromic printing layer 40 exposed on the outer surface 11 of the pot body 10. By utilizing the property that the thermochromic printing layer 40 changes to different display states with temperature changes, the thermochromic printing layer 40 becomes transparent as the temperature of the coffee maker 100 gradually increases during use. This exposes the temperature-changing graphic portion 32, which was previously hidden by the thermochromic printing layer 40. The normal temperature graphic portion 31 and the temperature-changing graphic portion 32 combine to form a new pattern. At the same time, a decorative coating 50 is printed on the outline of the temperature-changing graphic portion 32 to increase its prominence, thereby enhancing the aesthetic appeal of the coffee pot 100, diversifying the appearance of the coffee pot 100, and solving the technical problem of the coffee pot 100 having an overly monotonous appearance.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail; although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A coffee maker characterized in that, The coffee pot comprises: a pot body; a primer layer arranged on the outer surface of the pot body; a pattern printing layer arranged on the primer layer, the pattern printing layer having a pattern printed thereon; a temperature-variable printing layer arranged on the pattern printing layer; the primer layer comprises a first graphic area, the pattern printing layer covers the first graphic area; the pattern printing layer comprises a second graphic area, the temperature-variable printing layer covers the second graphic area; the pattern printing layer comprises a temperature-variable graphic part in the second graphic area and a normal-temperature graphic part outside the second graphic area; the temperature-variable printing layer comprises a colored state and a transparent state, wherein: when the temperature-variable printing layer is in the colored state, the temperature-variable printing layer hides the pattern on the temperature-variable graphic part in the second graphic area, so that the outer surface of the pot body only presents the pattern of the normal-temperature graphic part; when the temperature-variable printing layer is in the transparent state, the pattern on the pattern printing layer is completely presented; the coffee pot further comprises a decorative coating layer, the decorative coating layer covers part of the pattern printing layer along the contour of the second graphic area and / or covers part of the primer layer along the contour of the first graphic area and abuts the edge of the pattern printing layer according to the pattern.

2. The coffee pot of claim 1, wherein The coffee pot further comprises a luminescent layer arranged on the pattern printing layer.

3. The coffee pot of claim 1, wherein The temperature-variable printing layer gradually changes from the colored state to the transparent state as the temperature rises.

4. The coffee pot of claim 3, wherein The temperature-variable printing layer changes color in the range of 25-78 degrees Celsius.

5. The coffee maker of claim 1, wherein, The temperature-variable printing layer comprises a first color state and a second color state, and is configured to reversibly change from the first color state to the second color state following a change in temperature, so that the second graphic area changes appearance and recombines with the first graphic area to form a new appearance.

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