Label roll paper assembly and printer

Abstract

The utility model discloses a label roll paper assembly and a printer, and relates to the technical field of printing, a leading tape and label paper are sequentially wound on a reel, the first end of the leading tape is connected with the reel, the second end of the leading tape is connected with the tail end of the label paper, and the head end of the label paper is farther away from the reel than the tail end of the label paper. The head end of the label paper is located on the outermost side of the label paper winding assembly, the winding shaft wound with the leading tape and the label paper is assembled in a paper bin of the printer, when the printer prints the label paper, the head end of the label paper is firstly printed, the label paper is sequentially printed, and the head end of the label paper is continuously printed. The second end of the leading tape can extend to the preset position of the paper outlet channel, so that the tail end part of the label paper can move to the printing area of the printer, the printer can print the tail end part of the label paper, namely the last label of the label paper, and therefore the tail end part of the label paper can be normally printed by adding the leading tape, and the printing efficiency is improved. And material waste is reduced.

Description

Technical Field

[0001] This application relates to the field of printing technology, and more particularly to a label roll assembly and a printer. Background Technology

[0002] In related technologies, label paper is usually wound on a roll, and the last label is adhered to the roll to fix the label paper to the roll. When printing this roll of label paper using a label printer, because the last label is adhered to the roll, the last label cannot be peeled off the roll individually, and therefore cannot be printed and used normally, resulting in label waste. Utility Model Content

[0003] This application provides a label roll assembly and a printer, which can solve the technical problem of wasting the last label when printing roll label paper.

[0004] In a first aspect, embodiments of this application provide a label roll assembly, which is applied to a printer. The main unit of the printer includes a paper tray and a paper output channel communicating with the paper tray. The label roll assembly includes:

[0005] A reel, used for mounting inside the paper tray;

[0006] A label sheet having a head end and an end end that are disposed opposite each other along the length of the label sheet;

[0007] A guide tape and the label paper are sequentially wound onto the spool. The first end of the guide tape is connected to the spool, and the second end of the guide tape is connected to the end of the label paper. The first end and the second end are the two opposite ends of the guide tape.

[0008] The second end is used to extend to a preset position within the paper output channel so that the printer can print the end portion of the label paper.

[0009] In some embodiments, the label paper includes a base paper and a face paper affixed to the base paper, the second end of the guide tape is connected to the end of the base paper, and the material of the guide tape is the same as that of the base paper.

[0010] In some embodiments, the guide tape is integrally formed with the base paper.

[0011] In some embodiments, the guide tape includes a first adhesive segment and a guide segment connected to each other, the guide segment being connected to the backing paper of the label paper, and the first adhesive segment being bonded to the roll.

[0012] In some embodiments, the length of the guide tape is a, and the length of the first adhesive segment is b, where a and b satisfy: a > b, 20 mm ≥ a ≥ 10 mm, and 15 mm ≥ b ≥ 2 mm.

[0013] In some embodiments, the width of the first adhesive segment is c, the width of the backing paper is d, and the ratio of c to d satisfies: 1 ≥ c / d ≥ 0.6.

[0014] In some embodiments, the length of the guide segment is h, the connection between the guide segment and the first adhesive segment has a dividing line, and when the roll is used to assemble into the paper tray, the distance between the dividing line and the printing line of the printer is h1, where h and h1 satisfy: h > h1.

[0015] In some embodiments, the length of the guide segment is h, the connection between the guide segment and the first adhesive segment has a dividing line, and when the roll is used to assemble in the paper tray, the distance between the dividing line and the paper tearing blade of the printer is h2, where h and h2 satisfy: h > h2.

[0016] In some embodiments, the first adhesive segment includes a first segment, a second segment, and a third segment connected in sequence. The first segment is connected to the guide segment. The adhesive force between the first segment and the reel is M1, the adhesive force between the second segment and the reel is M2, and the adhesive force between the third segment and the reel is M3. M1, M2, and M3 satisfy the condition: M1 > M2 > M3.

[0017] In some embodiments, the adhesive force between the first adhesive segment and the roll is N1, and the paper feeding force of the printer for conveying the label paper is N2, wherein N1 and N2 satisfy: N1 > N2.

[0018] In some embodiments, the guide tape further includes a second adhesive segment connected to the end of the guide segment away from the first adhesive segment, and the second adhesive segment is bonded to the backing paper of the label paper.

[0019] In some embodiments, the adhesive force between the first adhesive segment and the roll is N1, the paper feeding force of the printer for conveying the label paper is N2, and the adhesive force between the second adhesive segment and the base paper is N3. N1, N2, and N3 satisfy the following condition: N1 > N3 > N2.

[0020] In some embodiments, the guide strap includes a first magnetic element, and the reel is provided with a second magnetic element, wherein the first magnetic element and the second magnetic element are magnetically connected.

[0021] In some embodiments, the label paper includes a base paper and a face paper affixed to the base paper, one end of the guide tape is connected to the end of the base paper, and the material of the guide tape is different from that of the base paper.

[0022] In some embodiments, the sensor is located at the preset position within the paper output channel.

[0023] Secondly, embodiments of this application provide a printer, which includes:

[0024] The host computer has a paper tray and a paper output channel communicating with the paper tray;

[0025] The label roll assembly as described in any of the preceding claims is assembled within the paper tray.

[0026] The label roll assembly and printer based on the embodiments of this application have at least the following beneficial effects:

[0027] By sequentially winding the guide tape and label paper onto a spool, with the first end of the guide tape connected to the spool and the second end connected to the end of the label paper (the first and second ends being opposite ends of the guide tape), and the beginning end of the label paper being further away from the spool than its end (i.e., the beginning end of the label paper being located at the outermost edge of the label roll assembly), the spool with the guide tape and label paper wound on it is assembled into the printer's paper tray. When printing labels, the printer first prints the beginning portion of the label paper and then prints the labels sequentially. As the labels continue to be printed, the second end of the guide tape can extend to a preset position in the paper output channel, allowing the end portion of the label paper to move to the printer's printing area. Thus, the printer can print the end portion of the label paper, i.e., the last label. Therefore, by adding the guide tape, the end portion of the label paper can be printed normally, improving material utilization and reducing material waste. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A three-dimensional structural diagram of a printer provided for an embodiment of this application;

[0030] Figure 2 A three-dimensional structural schematic diagram of the label roll assembly provided in the first embodiment of this application;

[0031] Figure 3A three-dimensional structural schematic diagram of the label roll assembly provided in the second embodiment of this application;

[0032] Figure 4 A three-dimensional structural schematic diagram of the label roll assembly provided in the first embodiment of this application from another perspective;

[0033] Figure 5 This is a three-dimensional structural diagram of the label roll assembly provided in the third embodiment of this application.

[0034] Explanation of reference numerals in the attached figures:

[0035] 100. Printer; 10. Main unit; 1. Main unit body; 11. Paper tray; 2. Cover; 20. Label roll assembly; 21. Roll; 22. Label paper; 221. Backing paper; 222. Face paper; 23. Guide tape; 231. First bonding section; 2311. First section; 2312. Second section; 2313. Third section; 232. Guide section; 2321. Dividing line; 233. Second bonding section. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0037] Please see Figure 1 and Figure 2 This application provides a label roll assembly 20, which is applied to a printer 100. The main unit 10 of the printer 100 includes a paper tray 11 and a paper output channel communicating with the paper tray 11. The label roll assembly 20 includes a roll 21, label paper 22, and guide belt 23. The roll 21 can be installed in the paper tray 11. Along the length direction of the label paper 22, the label paper 22 has a head end and a tail end that are arranged opposite to each other. The guide belt 23 and the label paper 22 are wound sequentially on the roll 21. The first end of the guide belt 23 is connected to the roll 21, and the second end of the guide belt 23 is connected to the tail end of the label paper 22. The first end and the second end are opposite ends of the guide belt 23. When printing the label paper 22, the second end of the guide belt 23 can extend to a preset position in the paper output channel, so that the printer 100 can print the tail portion of the label paper 22.

[0038] It should be noted that the main unit 10 of the printer 100 includes a paper tray 11 and a paper output channel communicating with the paper tray 11. When the printer 100 prints label paper 22, the label paper 22 first extends out of the paper tray 11 and enters the paper output channel. The label paper 22 is then transported to the printing area of ​​the printer 100, which refers to the position of the printer 100 with the print head. Finally, the print head prints the label paper 22.

[0039] The roll 21 is assembled inside the paper tray 11 and can rotate relative to the host 10 around the axis of the roll 21. The label paper 22 has multiple labels, which are arranged sequentially along the length of the label paper 22. The guide belt 23 and the label paper 22 can be wound sequentially onto the roll 21, with the guide belt 23 wound on the innermost side, or in other words, the guide belt 23 is wound on the roll 21, while the label paper 22 is wound on the guide belt 23 and the roll 21. The first end of the guide belt 23 is connected to the roll 21, and the second end of the guide belt 23 is connected to the end of the label paper 22. The first end and the second end are the opposite ends of the guide belt 23. The beginning end of the label paper 22 is further away from the roll 21 than the end end of the label paper 22, that is, the beginning end of the label paper 22 is located on the outermost side of the label roll assembly 20.

[0040] When printing label paper 22, printer 100 first prints the beginning portion of label paper 22 and then prints label paper 22 sequentially. As label paper 22 continues to be printed, the second end of guide belt 23 can extend to a preset position in the paper output channel, allowing the end portion of label paper 22 to move to the printing area of ​​printer 100. Thus, printer 100 can print the end portion of label paper 22, i.e., print the last label on label paper 22. Therefore, by adding guide belt 23, the end portion of label paper 22 can be printed normally, improving material utilization and reducing material waste.

[0041] Please see Figure 2 In some embodiments, the label paper 22 includes a base paper 221 and a face paper 222 affixed to the base paper 221. The second end of the guide tape 23 is connected to the end of the base paper 221, and the material of the guide tape 23 is the same as that of the base paper 221.

[0042] It should be noted that the main unit 10 of the printer 100 also includes a conveying component, a detection component, and a pedometer. The conveying component can be a motor, which is connected to the roller 21 for driving the roller 21 to convey the label paper 22 into the paper output channel. The detection component can be a sensor, which can be set in the paper output channel and is used to detect whether the paper output channel contains the face paper 222 or the back paper 221. The detection component can send a corresponding signal based on the detection result. The pedometer can be used to record the number of steps conveyed by the conveying component.

[0043] More specifically, when the number of steps recorded by the pedometer exceeds the first preset number of steps (the number of steps the conveyor takes to completely convey the label paper 22), if the detection unit continuously detects the bottom paper 221, it indicates that the last sheet of front paper 222 on the roll 21 has been printed, meaning the user needs to replace the label paper 22 in the printer 100. This is because although the conveyor is continuously driving the roll 21 to convey the label paper 22, the guide belt 23 remains stuck to the roll 21, so it is always located in the paper output channel. Therefore, the detection unit continuously detects the guide belt 23. Since the material of the guide belt 23 is the same as that of the bottom paper 221, the signal emitted by the detection unit is the same as the signal detected when detecting the bottom paper 221. Therefore, the original function of reminding the user to replace the label paper 22 can be achieved without replacing the detection unit of the printer 100.

[0044] In some embodiments, the guide tape 23 is integrally formed with the backing paper 221, so that the guide tape 23 is a natural extension of the backing paper 221. This can reduce the manufacturing cost of the label roll assembly 20, because if the guide tape 23 and the backing paper 221 are not integrally formed, the guide tape 23 needs to be made separately and then connected to the backing paper 221, which will increase the manufacturing cost of the label roll assembly 20.

[0045] Please see Figure 2 In some embodiments, the guide tape 23 includes a first adhesive segment 231 and a guide segment 232 connected to each other. The guide segment 232 is connected to the backing paper 221 of the label paper 22, and the first adhesive segment 231 is bonded to the roll 21.

[0046] Optionally, the guide tape 23 includes a first adhesive segment 231 and a guide segment 232 connected to each other. The guide segment 232 has a second end. The guide segment 232 is wound on the spool 21 and connected to the end of the label paper 22. The first adhesive segment 231 is bonded to the spool 21, so that the guide tape 23 is connected to the spool 21. When the printer 100 prints the label paper 22, the guide segment 232 extends into the paper output channel, so that the end portion of the label paper 22 connected to the guide segment 232 can extend to the printing area, thereby enabling the printing of the last label of the label paper 22.

[0047] Please see Figure 2 In some embodiments, the length of the guide tape 23 is a, and the length of the first adhesive segment 231 is b, where a and b satisfy: a > b, 20 mm ≥ a ≥ 10 mm, and 15 mm ≥ b ≥ 2 mm.

[0048] Optionally, the length a of the guide tape 23 cannot be too small. If a < 10 mm, the length of the guide tape 23 may not be long enough to guide the end of the label paper 22 to the printing area. The length a of the guide tape 23 cannot be too large. If a > 20 mm, the length of the guide tape 23 will be too long, which will lead to material waste.

[0049] The length b of the first adhesive section 231 cannot be too small. If b < 2 mm, the first adhesive section 231 will not be firmly bonded to the roll 21, making the guide tape 23 easy to fall off accidentally. The length b of the first adhesive section 231 cannot be too large. If b > 15 mm, the overall length of the guide tape 23 will be too long, which will also lead to material waste.

[0050] Therefore, when a and b satisfy the following conditions: a > b, 20mm ≧ a ≧ 10mm, 15mm ≧ b ≧ 2mm, the guide tape 23 can not only be firmly attached to the roll 21, but also guide the end part of the label paper 22 to extend to the printing area without causing material waste.

[0051] Please see Figure 2 In some embodiments, the width of the first adhesive segment 231 is c, the width of the backing paper 221 is d, and the ratio of c to d satisfies: 1 ≥ c / d ≥ 0.6.

[0052] Optionally, the first adhesive section 231 is the part that connects the guide tape 23 to the roll 21. The width c of the first adhesive section 231 cannot be too small. If c / d < 0.6, that is, the width of the first adhesive section 231 is less than 0.6 times the width of the backing paper 221, it may cause the first adhesive section 231 to be not firmly attached to the roll 21, making the guide tape 23 easy to fall off accidentally. Of course, the width c of the first adhesive section 231 cannot be too large. If c / d > 1, that is, the width of the first adhesive section 231 is greater than the width of the backing paper 221, it may cause material waste.

[0053] Please see Figure 1 and Figure 3 In some embodiments, the length of the guide segment 232 is h, and the connection between the guide segment 232 and the first adhesive segment 231 has a dividing line 2321. When the roll 21 is used to assemble in the paper tray 11, the distance between the dividing line 2321 and the printing line of the printer 100 is h1, and h and h1 satisfy: h > h1.

[0054] Optionally, the first adhesive segment 231 is bonded to the roll 21, and the first adhesive segment 231 is also connected to one end of the guide segment 232, so that the guide tape 23 is connected to the roll 21, and the other end of the guide segment 232 is connected to the end of the label paper 22, so that the guide segment 232 is the part of the guide tape 23 that can move relative to the roll 21. The length of the guide segment 232 is h, and there is a dividing line 2321 at the connection between the guide segment 232 and the first adhesive segment 231. When the roll 21 is assembled in the paper tray 11, the distance between the dividing line 2321 and the printing line of the printer 100 is h1, and the printing line is located on the print head.

[0055] When the printer 100 prints label paper 22, the label paper 22 is fed to the print head and printed by the print head. When h and h1 satisfy: h > h1, the length of the guide segment 232 is long enough to guide the end part of the label paper 22 to the print head, so that the print head can print the end part of the label paper 22, thereby reducing material waste.

[0056] Please see Figure 1 and Figure 3 In some embodiments, the length of the guide segment 232 is h, and the connection between the guide segment 232 and the first adhesive segment 231 has a dividing line 2321. When the roll 21 is used to assemble in the paper tray 11, the distance between the dividing line 2321 and the paper tearing blade of the printer 100 is h2, and h and h2 satisfy: h > h2.

[0057] It should be noted that when the printer 100 prints the label paper 22, the label paper 22 is fed to the print head. After the print head prints the label paper 22, the label paper 22 is continued to be fed to the tear blade of the printer 100, where the tear blade tears off the printed label for the user to use.

[0058] When h and h2 satisfy: h > h2, the length of the guide segment 232 is long enough to guide the end part of the label paper 22 to the tear blade, so that the last printed label can be torn off by the tear blade, and the last label can be used conveniently.

[0059] Please see Figure 3 and Figure 4 In some embodiments, the first adhesive segment 231 includes a first segment 2311, a second segment 2312, and a third segment 2313 connected in sequence. The first segment 2311 is connected to the guide segment 232. The adhesive force between the first segment 2311 and the spool 21 is M1, the adhesive force between the second segment 2312 and the spool 21 is M2, and the adhesive force between the third segment 2313 and the spool 21 is M3. M1, M2, and M3 satisfy the following condition: M1 > M2 > M3.

[0060] Optionally, the first adhesive segment 231 includes a first segment 2311, a second segment 2312, and a third segment 2313, which are sequentially distributed along the length of the guide tape 23 and are connected sequentially. The first segment 2311 is connected to the guide segment 232, and the first segment 2311 is the part of the first adhesive segment 231 closest to the label paper 22. 2 is the middle part of the first adhesive segment 231, and the third segment 2313 is the part of the first adhesive segment 231 away from the label paper 22. The adhesive force between the first segment 2311 and the roll 21 is M1, the adhesive force between the second segment 2312 and the roll 21 is M2, and the adhesive force between the third segment 2313 and the roll 21 is M3. M1, M2 and M3 satisfy: M1 > M2 > M3, that is, along the direction away from the label paper 22, the adhesive strength between the first adhesive segment 231 and the roll 21 decreases sequentially.

[0061] The first section 2311 is the part with the strongest adhesion between the first adhesive section 231 and the roll 21, making the end of the label paper 22 more firmly connected to the roll 21. When printing the label paper 22, it can prevent the end of the label paper 22 from being accidentally peeled off. After the end of the label paper 22 is printed, the first adhesive section 231 can be easily torn off from the roll 21 starting from the third section 2313, so that the roll 21 can be recycled and its utilization rate can be increased.

[0062] In some embodiments, the adhesive force between the first adhesive segment 231 and the roll 21 is N1, and the paper feeding force of the printer 100 for conveying the label paper 22 is N2. N1 and N2 satisfy: N1 > N2.

[0063] Optionally, the adhesive force between the first adhesive segment 231 and the roll 21 is N1, and the paper feeding force of the printer 100 to transport the label paper 22 is N2. When N1 and N2 satisfy: N1 > N2, it can be ensured that the paper feeding force of the printer 100 to transport the label paper 22 is less than the adhesive force between the guide belt 23 and the roll 21. Thus, during printing, the end portion of the label paper 22 can be prevented from detaching from the roll 21, and the end portion of the label paper 22 can be printed normally.

[0064] Please see Figure 5 In some embodiments, the guide tape 23 further includes a second adhesive segment 233, which is connected to the end of the guide segment 232 away from the first adhesive segment 231, and the second adhesive segment 233 is bonded to the backing paper 221 of the label paper 22.

[0065] Optionally, the guide tape 23 is sequentially connected to the second adhesive section 233, the guide section 232, and the first adhesive section 231. The second adhesive section 233 is connected to the backing paper 221 of the label paper 22, and the first adhesive section 231 is connected to the roll 21, so that the label paper 22 can be connected to the roll 21 through the guide tape 23. After the label paper 22 is printed, the backing paper 221 and the second adhesive section 233 can be torn apart, thereby enabling the guide tape 23 and the roll 21 to be recycled, further reducing material waste.

[0066] In some embodiments, the adhesive force between the first adhesive segment 231 and the roll 21 is N1, the paper feeding force of the printer 100 for conveying the label paper 22 is N2, and the adhesive force between the second adhesive segment 233 and the backing paper 221 is N3. N1, N2 and N3 satisfy: N1 > N3 > N2.

[0067] Optionally, when N1, N2, and N3 satisfy the condition N1 > N3 > N2, it indicates that the adhesive force between the second adhesive segment 233 and the backing paper 221 is greater than the paper feeding force of the printer 100 conveying the label paper 22. When printing the label paper 22, it can prevent the label paper 22 from detaching from the guide belt 23, ensuring that the end portion of the label paper 22 can be printed normally. It also indicates that the adhesive force between the first adhesive segment 231 and the roll 21 is the greatest, making the connection between the guide belt 23 and the roll 21 the most secure. The adhesive force between the guide belt 23 and the label paper 22 is relatively small, so that after the end portion of the label paper 22 is printed, the guide belt 23 can be easily separated from the label paper 22, facilitating the recycling of the guide belt 23 and the roll 21.

[0068] In some embodiments, the guide strap 23 includes a first magnetic element, and the reel 21 is provided with a second magnetic element, and the first magnetic element and the second magnetic element are magnetically connected.

[0069] Optionally, the first magnetic suction member can extend along the length of the guide belt 23 and be wound around the roll 21. The first magnetic suction member and the second magnetic suction member are magnetically connected to connect the guide belt 23 and the roll 21 together. The magnetic attraction between the first magnetic suction member and the second magnetic suction member is greater than the paper feeding force of the printer 100 to transport the label paper 22, so that the end part of the label paper 22 can be printed normally. After the end part of the label paper 22 is printed, the guide belt 23 can be easily removed from the roll 21, and the roll 21 can be recycled to reduce material waste.

[0070] Please see Figure 2 In some embodiments, the label paper 22 includes a base paper 221 and a face paper 222 affixed to the base paper 221. One end of the guide tape 23 is connected to the end of the base paper 221, and the material of the guide tape 23 is different from that of the base paper 221.

[0071] Understandably, during the printing of label paper 22, the label paper 22 extends from the paper tray 11 into the paper output channel and from the paper output channel to the print head, where the print head prints the label paper 22. The detection component in the paper output channel can continuously detect the label paper 22. When the detection component detects that the paper passing through the paper output channel is the face paper 222, it means that the face paper 222 of the label paper 22 has not been printed yet, and there is no need to replace the label roll assembly 20. When the detection component detects that the paper passing through the paper output channel is the guide tape 23, it means that the face paper 222 of the label paper 22 has been printed, and the label roll assembly 20 needs to be replaced. By designing the material of the guide tape 23 to be different from that of the backing paper 221, the detection component can easily detect whether the label paper 22 has been used up.

[0072] In some embodiments, the position of the sensor in the paper output channel is a preset position. When the second end of the guide belt 23 extends to the position of the sensor in the paper output channel, the sensor can detect the guide belt 23, which means that the end part of the label paper 22 has passed through the paper output channel. The printer 100 can print the end part of the label paper 22, thereby improving material utilization and reducing material waste.

[0073] Please see Figure 1 This application also proposes a printer 100, which includes a host 10 and a label roll assembly 20 as described above. The host 10 includes a host body 1 and a cover 2. The host body 1 has a paper tray 11. The cover 2 is movably connected to the host 10 and is used to open and close the paper tray 11. When the cover 2 closes the paper tray 11, the cover 2 and the host body 1 form a paper output channel, which communicates with the paper tray 11. The label roll assembly 20 is assembled inside the paper tray 11.

[0074] The beneficial effects of the printer 100 in this application are the same as those of the label roll assembly 20 in this application, and will not be described again here.

[0075] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application 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. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0076] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A label roll assembly, characterized by Applied to a printer, the main unit of the printer includes a paper tray and a paper output channel communicating with the paper tray, and the label roll assembly includes: A reel, used for mounting inside the paper tray; A label sheet having a head end and an end end that are disposed opposite each other along the length of the label sheet; A guide tape and the label paper are sequentially wound onto the spool. The first end of the guide tape is connected to the spool, and the second end of the guide tape is connected to the end of the label paper. The first end and the second end are the opposite ends of the guide tape. The second end is used to extend to a preset position within the paper output channel so that the printer can print the end portion of the label paper.

2. The label roll assembly of claim 1, wherein, The label paper includes a base paper and a face paper affixed to the base paper. The second end of the guide tape is connected to the end of the base paper, and the material of the guide tape is the same as that of the base paper.

3. The label roll assembly of claim 2, wherein, The guide tape is integrally formed with the base paper.

4. The label roll assembly of claim 1, wherein, The guide tape includes a first adhesive section and a guide section that are connected to each other. The guide section is connected to the backing paper of the label paper, and the first adhesive section is bonded to the roll.

5. The label roll assembly of claim 4, wherein, The length of the guide tape is a, and the length of the first adhesive segment is b. a and b satisfy: a > b, 20mm ≥ a ≥ 10mm, and 15mm ≥ b ≥ 2mm.

6. The label roll assembly of claim 4, wherein, The width of the first adhesive segment is c, and the width of the base paper is d. The ratio of c to d satisfies: 1 ≥ c / d ≥ 0.

6.

7. The label roll assembly of claim 4, wherein, The length of the guide section is h, and there is a dividing line at the connection between the guide section and the first adhesive section. When the roll is used to assemble the paper tray, the distance between the dividing line and the printing line of the printer is h1, and h and h1 satisfy: h > h1.

8. The label roll assembly of claim 4, wherein, The length of the guide section is h, and there is a dividing line at the connection between the guide section and the first adhesive section. When the roll is used to assemble the paper tray, the distance between the dividing line and the paper tearing blade of the printer is h2, and h and h2 satisfy: h > h2.

9. The label roll assembly of claim 4, wherein, The first adhesive segment includes a first segment, a second segment, and a third segment connected in sequence. The first segment is connected to the guide segment. The adhesive force between the first segment and the reel is M1, the adhesive force between the second segment and the reel is M2, and the adhesive force between the third segment and the reel is M3. M1, M2, and M3 satisfy the following condition: M1 > M2 > M3.

10. The label roll assembly of claim 4, wherein, The adhesive force between the first adhesive segment and the roll is N1, and the paper feeding force of the printer for conveying the label paper is N2. N1 and N2 satisfy: N1 > N2.

11. The label roll assembly of claim 4, wherein, The guide tape also includes a second adhesive section, which is connected to the end of the guide section away from the first adhesive section, and the second adhesive section is bonded to the backing paper of the label paper.

12. The label roll assembly of claim 11, wherein, The adhesive force between the first adhesive segment and the roll is N1, the paper feeding force of the printer for conveying the label paper is N2, and the adhesive force between the second adhesive segment and the base paper is N3. N1, N2, and N3 satisfy the following condition: N1 > N3 > N2.

13. The label roll assembly of claim 1, wherein, The guide belt includes a first magnetic element, and the reel is provided with a second magnetic element, wherein the first magnetic element and the second magnetic element are magnetically connected.

14. The label roll assembly of claim 1, wherein, The label paper includes a base paper and a face paper pasted on the base paper. One end of the guide tape is connected to the end of the base paper, and the material of the guide tape is different from that of the base paper.

15. The label roll assembly of claim 1, wherein, The sensor is located at the preset position within the paper output channel.

16. A printer characterized by comprising: include: The host computer has a paper tray and a paper output channel communicating with the paper tray; The label roll assembly as claimed in any one of claims 1-15, wherein the label roll assembly is assembled within the paper tray.

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