Miniprinter and method for adapting to different roll paper widths

Abstract

The invention relates to the technical field of miniature printing devices, in particular to a miniature printer and a method for adapting to different roll paper widths. The miniature printer comprises a limiting mechanism and a control module, the limiting mechanism has a limiting width, and the limiting mechanism is configured to restrain the limiting width and the position of roll paper in a containing bin in the first direction, so that the center line of the roll paper in the first direction corresponds to the center line of a printing assembly in the first direction; the control module is configured to control a print width of the print assembly. According to the miniature printer, roll paper with different widths is used for printing according to the requirements of an operator, the application range of the miniature printer is expanded, the application flexibility of the miniature printer is improved, the operator does not need to purchase a plurality of miniature printers to meet the width requirements of printing different roll paper, and the cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of micro-printing devices, and in particular to a micro-printer and a method for adapting to different roll paper widths. Background Art

[0002] Printers are now widely used in all aspects of life. Thermal printers, in particular, have become a staple in businesses like train stations, banks, and supermarkets due to their relatively low cost, fast printing speed, and excellent quality. In some business processes, installing a printer can significantly improve efficiency and save customers time waiting in line.

[0003] Due to the changes in printing content in different application scenarios, operators have different requirements for the width of the printing roll paper. Therefore, operators need to configure micro printers that can print rolls of different widths to meet different application requirements, resulting in increased costs.

[0004] In order to solve the above problems, it is urgent to provide a micro printer and a method for adapting to different roll paper widths to solve the above problems. Summary of the Invention

[0005] An object of the present invention is to provide a micro printer that can be used with rolls of paper of different widths, thereby expanding the scope of application and reducing operator costs.

[0006] Another object of the present invention is to provide a method for adapting to different paper roll widths, so as to achieve the effect of being applicable to paper rolls of different widths, expanding the scope of application, and reducing operator costs. To achieve this object, the present invention adopts the following technical solutions:

[0007] A micro printer includes a housing, a paper feed drive assembly, and a printing assembly. The housing has a storage compartment configured to accommodate a roll of paper. The paper feed drive assembly and the printing assembly are disposed within the housing and jointly clamp paper on the roll. The paper feed drive assembly is configured to drive the paper to move in a paper feed direction.

[0008] The micro printer also includes:

[0009] a limiting mechanism, the limiting mechanism being at least partially disposed in the accommodating bin, the limiting mechanism having a limiting width, the limiting mechanism being configured to constrain the limiting width and the position of the paper roll in the accommodating bin along a first direction so that a center line of the paper roll along the first direction is disposed corresponding to a center line of the printing assembly along the first direction, the first direction being an axial direction of the paper roll; and

[0010] A control module is connected to the printing assembly by signal, and the control module is configured to control the printing width of the printing assembly.

[0011] In some embodiments, the limiting mechanism includes:

[0012] a limiting assembly, the limiting assembly having a limiting width, the limiting width being set corresponding to the width of the paper roll; and

[0013] An adjusting component is connected to the limiting component, and the adjusting component is configured to adjust the size of the limiting width.

[0014] In some embodiments, the limiting assembly includes:

[0015] Two spaced-apart limiting members, the distance between the two limiting members being the limiting width, the two limiting members being able to move closer to or farther from each other along a first direction to adjust the size of the limiting width, the first direction being the axial direction of the paper roll.

[0016] In some embodiments, the housing comprises:

[0017] two side panels, the two side panels being respectively located on both sides of the accommodating compartment along the first direction; and

[0018] The bottom plate is arranged in an arc shape between the two side plates, and there is an accommodating gap between the two sides of the bottom plate and the two side plates along the first direction. The limiting member is located in the accommodating gap, and the adjusting component is located outside the accommodating compartment.

[0019] In some embodiments, the adjustment component includes:

[0020] a driving member, disposed on the housing; and

[0021] The transmission member is connected to the output end of the driving member, and a part of the transmission member is inserted into the limiting member so that when the driving member drives the transmission member to move, the two limiting members can be driven to move closer to or away from each other.

[0022] In some embodiments, the transmission member includes:

[0023] a first gear connected to the output end of the driving member;

[0024] a first driving rod, the first driving rod passing through the two limiting members along a first direction, the first driving rod being threadedly connected to one of the limiting members, and the first gear being sleeved on the first driving rod;

[0025] a second gear meshing with the first gear; and

[0026] The second drive rod, the second gear is sleeved on the second drive rod, the second drive rod is parallel to the first drive rod and is spaced apart, the second drive rod is passed through the two limiting members along the first direction, the second drive rod is threadedly connected to the other limiting member, and the thread directions of the first drive rod and the second drive rod and the two limiting members are opposite.

[0027] In some embodiments, the driving member includes:

[0028] a third gear, coaxially arranged on the first driving rod with the first gear;

[0029] a fourth gear meshing with the third gear, wherein the axes of the fourth gear and the third gear are perpendicular; and

[0030] A driving part, wherein an output end of the driving part is connected to the fourth gear, and the driving part drives the fourth gear to rotate, which can drive the third gear to rotate.

[0031] In some embodiments, the limiting mechanism further comprises:

[0032] A guide assembly is provided on the housing, and is configured to provide guidance for the assembly process of the adjustment assembly and to limit the degree of freedom of the adjustment assembly in a first direction.

[0033] A method for adapting to different roll paper widths, comprising the following steps:

[0034] The limiting mechanism is adjusted with the center line of the printing assembly of the micro printer along the first direction as the center, and the local position of the limiting mechanism is changed so that the limiting mechanism can limit the roll paper of different widths;

[0035] The control module adjusts the printing width of the printing assembly so that a center line of the printing width of the assembly corresponds to a center line of the width of the roll paper.

[0036] In some embodiments, the method of controlling the module to adjust the printing width of the printing assembly so that the printing width corresponds to the width of the roll paper includes:

[0037] Adjust the amount of space before printed characters; and

[0038] Adjust the number of characters per line.

[0039] The beneficial effects of the present invention are:

[0040] The present invention provides a micro-printer, comprising a housing, a paper feed drive assembly, and a printing assembly. The housing has a storage compartment configured to accommodate a paper roll. The paper feed drive assembly and the printing assembly are disposed within the housing and jointly clamp the paper roll. The paper feed drive assembly is configured to drive the paper roll in a paper feed direction. The micro-printer also includes a limiting mechanism and a control module. The limiting mechanism is at least partially disposed within the storage compartment, has a limiting width, and is configured to constrain the limiting width and the position of the paper roll in the storage compartment along a first direction so that a centerline of the paper roll along the first direction is aligned with a centerline of the printing assembly along the first direction, the first direction being the axis of the paper roll. The control module is signal-connected to the printing assembly and configured to control the printing width of the printing assembly. The micro-printer accommodates paper rolls of varying widths by adjusting the limiting width of the paper roll by the limiting mechanism. Furthermore, the limiting mechanism constrains the position of the paper roll along the first direction, and the control module is adjusted to adjust the printing width. This micro-printer enables printing on rolls of paper of varying widths, expanding its applicability and increasing its flexibility. This mini-printer eliminates the need to purchase multiple mini-printers to accommodate different roll paper widths, reducing costs.

[0041] This embodiment provides a method for adapting to different paper roll widths, comprising the following steps: adjusting a limiting mechanism centered on the centerline of a printing assembly along a first direction, changing the local position of the limiting mechanism so that the limiting mechanism limits paper rolls of different widths; and controlling a control module to adjust the printing width of the printing assembly so that the centerline of the assembly's printing width corresponds to the centerline of the paper roll's width. Through this method for adapting to different paper roll widths, the micro-printer adjusts the position of the paper roll by adjusting the limiting mechanism to accommodate paper rolls of different widths, while simultaneously adjusting the control module to adjust the printing width. This micro-printer enables printing using paper rolls of different widths according to the operator's needs, expanding the scope of application of the micro-printer and increasing the flexibility of its application. Using this micro-printer, the operator does not need to purchase multiple micro-printers to meet the requirements for printing different paper roll widths, which helps reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in describing the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without any creative work.

[0043] Figure 1This is a schematic diagram of the structure of the micro printer provided in Example 1 of the present invention. Figure 1 ;

[0044] Figure 2 This is a schematic diagram of the structure of the micro printer provided in Example 1 of the present invention. Figure 2 ;

[0045] Figure 3 This is a schematic diagram of the structure of the micro printer provided in Example 1 of the present invention. Figure 3 ;

[0046] Figure 4 1 is a schematic structural diagram of a limiting mechanism provided in Example 1 of the present invention;

[0047] Figure 5 yes Figure 4 A partial enlarged view of point A in the middle;

[0048] Figure 6 This is a logic diagram of a method for adapting to different roll paper widths provided in the second embodiment of the present invention;

[0049] Figure 7 This is a schematic diagram of the connection relationship of the control modules provided in the second embodiment of the present invention.

[0050] The following are marked in the figure:

[0051] 1000, micro printer;

[0052] 100, housing; 110, accommodating compartment; 120, side panel; 130, bottom panel; 140, accommodating gap; 150, lower housing; 160, upper housing; 170, accommodating space; 180, upper cover;

[0053] 200, paper feed drive assembly;

[0054] 300, printing component;

[0055] 400, limit mechanism;

[0056] 410, limit assembly; 411, limit piece;

[0057] 420, adjustment assembly; 421, driving member; 4211, driving portion; 4212, third gear; 4213, fourth gear; 4214, connecting shaft; 422, transmission member; 4221, first gear; 4222, first driving rod; 4223, second gear; 4224, second driving rod; 4225, first bearing;

[0058] 430, limit strip;

[0059] 440, limiting boss;

[0060] 450, guide assembly; 451, guide groove;

[0061] 500, control module;

[0062] 2000, roll of paper. DETAILED DESCRIPTION

[0063] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions of the present invention, not the entire structure.

[0064] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and may refer to the interconnection of structures within two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific contexts.

[0065] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0066] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0067] Example 1

[0068] like Figure 1 As shown, this embodiment provides a micro printer 1000, where the micro printer 1000 can be a handheld POS machine, a label printer, or other micro printer 1000.

[0069] like Figure 1-Figure 3 The micro printer 1000 includes a housing 100, a paper feed drive assembly 200 and a printing assembly 300. The housing 100 has a storage compartment 110, which is configured to accommodate a roll of paper 2000. The paper feed drive assembly 200 and the printing assembly 300 are arranged in the housing 100, and the paper feed drive assembly 200 and the printing assembly 300 jointly clamp the paper of the roll of paper 2000. The paper feed drive assembly 200 is used to drive the paper to move along the paper feed direction, thereby realizing the printing function of the micro printer 1000.

[0070] See Figure 2-Figure 5 The housing 100 includes a lower housing 150 and an upper housing 160 that are arranged in a coordinated manner, with the accommodating compartment 110 disposed within the upper housing 160. The paper feed drive assembly 200 and the printing assembly 300 may be disposed within the upper housing 160, or may be disposed on both the upper housing 160 and the lower housing 150. The housing 100 also includes an upper cover 180 that is disposed on the upper housing 160 to enclose the accommodating compartment 110.

[0071] Furthermore, the upper housing 160 has an outer shell. The housing 100 includes a bottom plate 130 and two side plates 120. The two side plates 120 are located on either side of the accommodating compartment 110 along a first direction, and the housing and the side plates 120 on either side of the displacement micro printer 1000 along the first direction are parallel and spaced apart. A accommodating space 170 is defined between the housing and the side plates 120. The accommodating space 170 is used to provide a connection structure between the upper housing 160 and the lower housing 150. Furthermore, since the paper roll 2000 is cylindrical, the bottom plate 130 is arranged in an arc shape between the two side plates 120 to provide support for the bottom of the paper roll 2000.

[0072] See Figure 4 and Figure 5 Furthermore, the micro printer 1000 further includes a limiting mechanism 400 and a control module 500. The limiting mechanism 400 is at least partially disposed in the accommodating chamber 110. The limiting mechanism 400 has a limiting width. The limiting mechanism 400 is configured to constrain the limiting width and the position of the paper roll 2000 in the accommodating chamber 110 along a first direction, so that the center line of the paper roll 2000 along the first direction is arranged corresponding to the center line of the printing assembly 300 along the first direction. The first direction is the axial direction of the paper roll 2000. The control module 500 is signal-connected to the printing assembly 300 and is configured to control the printing width of the printing assembly 300.

[0073] The micro-printer 1000 adjusts the width of the paper roll 2000 by adjusting the limiting mechanism 400 to accommodate paper rolls 2000 of varying widths. The limiting mechanism 400 constrains the position of the paper roll 2000 along a first direction, while the control module 500 is adjusted to adjust the printing width. The micro-printer 1000 enables printing using paper rolls 2000 of varying widths based on the operator's needs, expanding the micro-printer's applicability and increasing its flexibility. Using the micro-printer 1000, the operator no longer needs to purchase multiple micro-printers 1000 to accommodate the required widths of paper rolls 2000, thereby reducing costs.

[0074] At the same time, the micro printer 1000 can ensure that during the process of adjusting to adapt to different widths of the roll paper 2000, the center of the roll paper 2000 along the first direction always corresponds to the center line of the printing component 300, so as to ensure the beauty and comfort of the operator during use.

[0075] As an optional solution, the limiting mechanism 400 includes a limiting assembly 410 and an adjustment assembly 420. The limiting assembly 410 has a limiting width, which is set accordingly to the width of the paper roll 2000. The adjustment assembly 420 is connected to the limiting assembly 410 and is configured to adjust the size of the limiting width. When the paper roll 2000 needs to be replaced with a different width, it can be achieved by simply operating the adjustment assembly 420 to adjust the limiting width of the limiting assembly 410. This adjustment mechanism has a simple structure and is easy to operate, which can not only reduce costs but also facilitate use by the operator.

[0076] In some embodiments, the limiting assembly 410 includes two spaced-apart limiting members 411, with the distance between the two limiting members 411 being the limiting width. The two limiting members 411 can be moved closer or further away from each other along a first direction to adjust the limiting width, where the first direction is the axial direction of the paper roll 2000. The limiting assembly 410 adjusts the limiting width by moving the two limiting members 411 closer or further away from each other, facilitating simultaneous adjustment of both limiting members 411. This improves adjustment efficiency while ensuring that the centerline does not deviate, aligning with the printing range of the printing assembly 300. This facilitates improved stability of the microprinter 1000.

[0077] A receiving gap 140 is defined between the bottom plate 130 and the two side plates 120 on either side along the first direction. The position-limiting member 411 is located within the receiving gap 140, and the adjustment assembly 420 is located outside the receiving compartment 110. Due to the limited space in the receiving compartment 110, to improve space utilization and reduce the overall size of the micro printer 1000, the position-limiting member 411 is disposed within the receiving gap 140, while the adjustment assembly 420 is located outside the receiving compartment 110. This effectively utilizes the space within the receiving compartment and the housing 100, thereby improving space utilization.

[0078] At the same time, the above structure facilitates the limiting members 411 to constrain the size of the limiting width, and the positions of the two limiting members 411 along the first direction in the accommodating compartment 110 can control the position of the paper roll 2000.

[0079] Specifically, the limiting member 411 may be a quarter-circular or square plate-shaped structure.

[0080] When the limiting member 411 has a quarter-circular structure, the position of the limiting member 411 near the center of the circle is connected to the adjustment assembly 420, and the curved side of the limiting member 411 is used to limit the position of the paper roll 2000. In this case, if the paper roll 2000 is a hollow paper roll 2000 with a reel, the radius of the limiting member 411 ensures that the outer curved edge of the limiting member 411 is tangential to or fits closely with the outer periphery of the reel. This prevents the limiting member 411 from being unable to limit the paper roll 2000 in the first direction when the paper roll 2000 is nearly exhausted. If the paper roll 2000 is a solid paper roll 2000 without a reel, the radius of the limiting member 411 is set to correspond to the radius of the reel.

[0081] When the limiting member 411 has a square structure, its height dimension ensures that it does not protrude beyond the upper end surface of the upper housing 160. Furthermore, when the paper roll 2000 is a hollow paper roll 2000 with a reel, the height dimension of the limiting member 411 is no less than the thickness of the paper roll 2000. When the paper roll 2000 is a solid paper roll 2000 without a reel, the height dimension of the limiting member 411 is no more than the upper end surface of the upper housing 160. In a direction perpendicular to the height, the dimension of the limiting member 411 is no less than the radius of the paper roll 2000, thereby ensuring that the limiting member 411 can limit the position of the paper roll 2000 along the first direction regardless of the diameter of the paper roll 2000.

[0082] As an optional solution, the adjustment assembly 420 includes a driving member 421 and a transmission member 422. The driving member 421 is disposed on the housing 100, and the transmission member 422 is connected to the output end of the driving member 421. A portion of the transmission member 422 is disposed in the limiting member 411, so that when the driving member 421 drives the transmission member 422 to move, the two limiting members 411 can be driven toward or away from each other, thereby adjusting the limiting width between the two limiting members 411.

[0083] The driving member 421 is disposed in the accommodating space 170 to ensure full utilization of the space of the housing 100 .

[0084] Alternatively, as Figure 5 As shown, the transmission member 422 includes a first gear 4221, a first driving rod 4222, a second gear 4223, and a second driving rod 4224. The first gear 4221 is connected to the output end of the driving member 421, the first driving rod 4222 is arranged in the first direction through the two limiting members 411, the first driving rod 4222 is threadedly connected to one of the limiting members 411, the first gear 4221 is sleeved on the first driving rod 4222, the second gear 4223 is meshed with the first gear 4221, the second gear 4223 is sleeved on the second driving rod 4224, the second driving rod 4224 is parallel to the first driving rod 4222 and spaced apart, the second driving rod 4224 is arranged in the first direction through the two limiting members 411, the second driving rod 4224 is threadedly connected to the other limiting member 411, and the threads of the first driving rod 4222 and the second driving rod 4224 are opposite to those of the two limiting members 411. The transmission member 422 enables synchronous adjustment of the positions of the two limiters 411 under single drive, resulting in a simple structure and reduced costs. More importantly, the synchronous adjustment of the two limiters 411 helps ensure the equality of the movement distances of the two limiters 411, thereby ensuring that the centrality of the limiter width remains unchanged during adjustment. This ensures that the center of the paper aligns with the center of the printing assembly 300 during printing, thus avoiding printing deviations.

[0085] More specifically, the first drive rod 4222 is threadedly connected to one of the limit members 411 and is slidingly connected to the other limit member 411. At the same time, the second drive rod 4224 is threadedly connected to one of the limit members 411 and is slidingly connected to the other limit member 411, thereby reducing the friction between the first drive rod 4222 and the second drive rod 4224 and the limit member 411.

[0086] Furthermore, a first bearing 4225 can be provided at the connection where the first driving rod 4222, the second driving rod 4224 and the limit member 411 are slidably connected. The first bearing 4225 is a sliding bearing to further reduce the friction during the sliding process and improve the service life of the parts.

[0087] In some embodiments, the driving member 421 includes a third gear 4212, a fourth gear 4213, and a driving portion 4211. The third gear 4212 is coaxially arranged on the first driving rod 4222 with the first gear 4221. The fourth gear 4213 is meshed with the third gear 4212, and the fourth gear 4213 is perpendicular to the axis of the third gear 4212. The output end of the driving portion 4211 is connected to the fourth gear 4213. The driving portion 4211 drives the fourth gear 4213 to rotate, which can drive the third gear 4212 to rotate. The structure of the driving member 421 changes the output direction of the driving member 421 through the cooperation of the third gear 4212 and the fourth gear 4213, which helps to improve the flexibility of the structural setting of the driving member 421.

[0088] Exemplarily, the third gear 4212 and the fourth gear 4213 are helical gears, and the driving part 4211 can be a motor, which is electrically connected to the control module 500 to achieve electric drive, further simplifying the operator's operating steps and improving the degree of automation of the micro printer 1000.

[0089] In addition, the third gear 4212 and the fourth gear 4213 are helical gears, and the drive unit 4211 can also be manually driven. In this case, the drive unit 4211 can be set at the lower end of the lower shell 150 so that the operator can adjust the limit width without opening the shell 100, which is conducive to improving the flexibility of the operation of the limit mechanism 400. The manually driven drive unit 4211 can be a rocker drive, and the operator can operate it without the aid of external tools. The manually driven drive unit 4211 can also be a screw, and the operator can operate it with a tool such as a screw. This embodiment is not limited to this.

[0090] Furthermore, the driving member 421 further includes a fixing seat (not shown), which is disposed on the lower housing 150. The connecting shaft 4214 between the fourth gear 4213 and the driving portion 4211 passes through the fixing seat to ensure the structural stability of the limiting mechanism 400. Of course, a second bearing can be disposed between the connecting shaft 4214 and the fixing seat. The second bearing is a rotating bearing to reduce friction between the connecting shaft 4214 and the fixing seat.

[0091] Furthermore, the limiting mechanism 400 further includes a limiting strip 430, which is arranged in the accommodating bin 110 along the first direction. The limiting strip 430 is configured to prevent the limiting assembly from

[0092] 410 rotates to ensure the stability of the limiting mechanism 400.

[0093] In addition, the limiting mechanism 400 also includes a limiting boss 440, which is arranged on the limiting strip 430. The limiting boss 440 is used to constrain the minimum distance between the two limiting members 411 and each other, that is, the limiting boss 440 can constrain the minimum width of the roll paper 2000 that can be placed in the micro printer 1000.

[0094] In actual use, the paper width of the micro printer 1000 generally has various specifications such as 58mm, 76mm, 79.5mm and 80mm. In this embodiment, the limit width constrained by the limit boss 440 is the conventional minimum paper width, 58mm.

[0095] As an optional solution, the limiting mechanism 400 further includes a guide assembly 450, which is disposed on the housing 100, specifically on the inner wall of the upper housing 160. The guide assembly 450 is used to provide guidance during the assembly process of the adjustment assembly 420, thereby facilitating rapid assembly of the adjustment assembly 420. The guide assembly 450 also limits the degree of freedom of the adjustment assembly 420 in the first direction to prevent movement of the adjustment assembly 420, thereby improving the stability of the adjustment mechanism during operation.

[0096] Furthermore, the guide assembly 450 has a guide groove 451 extending in the vertical direction, with an opening provided below the guide groove 451, and the guide groove 451 extending in the vertical direction. Specifically, the guide assembly 450 can be two sets, and the two sets of guide assemblies 450 are respectively provided at both ends of the adjustment assembly 420. When assembling the first drive rod 4222 and the second drive rod 4224 of the adjustment assembly 420, it is only necessary to slide the ends of the first drive rod 4222 and the second drive rod 4224 upward from the opening into the guide groove 451, and then the ends of the first drive rod 4222 and the second drive rod 4224 respectively abut against the upper housing 160. At this time, the upper housing 160 can also prevent the first drive rod 4222 and the second drive rod 4224 from moving in the first direction.

[0097] To secure the first and second drive rods 4222 and 4224, a rotating bearing (not shown) can be provided between the ends of the first and second drive rods 4222 and 4224 and the upper housing 160. This allows the first and second drive rods 4222 and 4224 to rotate and reduces friction. Specifically, the upper housing 160 has a fixing hole, into which the bearing seat of the rotating bearing can be assembled from the other side. The rotating bearing is mounted on the end of the first and second drive rods 4222 and 4224, and the bearing seat is fixed to the upper housing 160.

[0098] Example 2

[0099] This embodiment provides a method for adapting to different widths of roll paper 2000 , which is used in a micro printer 1000 .

[0100] like Figure 6 and Figure 7 As shown, the method includes the following steps:

[0101] The limiting mechanism 400 is adjusted with the center line of the printing component 300 along the first direction as the center, and the local position of the limiting mechanism 400 is changed so that the limiting mechanism 400 can limit the roll paper 2000 of different widths; and the control module 500 adjusts the printing width of the printing component 300 so that the center line of the component's printing width corresponds to the center line of the width of the roll paper 2000.

[0102] It is worth noting that the adjustment of the limiting mechanism 400 and the adjustment of the control module 500 can be performed simultaneously and in any order, and this embodiment does not impose any limitation on this.

[0103] Through this method for adapting to different paper roll widths 2000, the micro-printer 1000 adjusts the position of the paper roll 2000 by adjusting the limiting mechanism 400 to accommodate paper rolls 2000 of different widths, and simultaneously adjusts the control module 500 to adjust the printing width. This micro-printer 1000 enables printing using paper rolls 2000 of different widths according to the operator's needs, expanding the scope of application of the micro-printer 1000 and increasing its flexibility. Using this micro-printer 1000, the operator does not need to purchase multiple micro-printers 1000 to meet the printing needs of different paper roll widths, which helps reduce costs.

[0104] Furthermore, the method for adjusting the limiting mechanism 400 with the centerline of the printing assembly 300 along the first direction as the center includes adjusting the distances from the limiting plates of the limiting mechanism 400 on either side of the centerline. This method ensures that, when adjusting to accommodate different widths of the paper roll 2000, the center of the paper roll 2000 along the first direction always aligns with the centerline of the printing assembly 300, ensuring aesthetic and comfortable use for the operator.

[0105] Optionally, the control module 500 adjusts the print width of the printing assembly 300 to correspond to the width of the paper roll 2000 by adjusting the number of spaces before printed characters and the number of characters per line. This method facilitates ensuring that characters printed by the printing assembly 300 are consistent with the width of the paper roll 2000, avoiding printing outside the width or improperly utilizing the width of the paper roll 2000.

[0106] Note that the basic principles and main features of the present invention and the advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, which are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications are intended to fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A micro printer, characterized in that: The invention comprises a housing (100), a paper feed drive assembly (200) and a printing assembly (300), wherein the housing (100) has a storage bin (110), the storage bin (110) is configured to accommodate a roll of paper (2000), the paper feed drive assembly (200) and the printing assembly (300) are arranged in the housing (100), and the paper feed drive assembly (200) and the printing assembly (300) jointly clamp the paper of the roll of paper (2000), and the paper feed drive assembly (200) is used to drive the paper to move along a paper feed direction; The micro printer also includes: a limiting mechanism (400), the limiting mechanism (400) being at least partially disposed in the accommodating bin (110), the limiting mechanism (400) having a limiting width, the limiting mechanism (400) being configured to constrain the limiting width and the position of the roll paper (2000) in the accommodating bin (110) along a first direction, so that a center line of the roll paper (2000) along the first direction is disposed correspondingly to a center line of the printing assembly (300) along the first direction, the first direction being an axial direction of the roll paper (2000); and A control module (500) is connected to the printing component (300) via signals, and the control module (500) is configured to control the printing width of the printing component (300).

2. The micro printer according to claim 1, wherein: The limiting mechanism (400) comprises: a limiting component (410), the limiting component (410) having a limiting width, the limiting width being set corresponding to the width of the roll paper (2000); and An adjusting component (420), the adjusting component (420) is connected to the limiting component (410), and the adjusting component (420) is configured to adjust the size of the limiting width.

3. The micro printer according to claim 2, characterized in that: The limiting assembly (410) includes: Two spaced-apart limiting members (411) are provided, the distance between the two limiting members (411) being a limiting width, and the two limiting members (411) can move closer to or farther from each other along the first direction to adjust the size of the limiting width.

4. The micro printer according to claim 3, characterized in that: The housing (100) comprises: two side panels (120), the two side panels (120) being respectively located on both sides of the accommodating bin (110) along the first direction; and A bottom plate (130) is provided in an arc shape between the two side plates (120), and a receiving gap (140) is provided between the bottom plate (130) and the two side plates (120) on both sides along the first direction, the limiting member (411) is located in the receiving gap (140), and the adjusting assembly (420) is located outside the receiving compartment (110).

5. The micro printer according to claim 3, characterized in that: The adjustment component (420) includes: a driving member (421), disposed on the housing (100); and A transmission member (422) is connected to the output end of the driving member (421), and a portion of the transmission member (422) is inserted into the limiting member (411), so that when the driving member (421) drives the transmission member (422) to move, the two limiting members (411) can be driven to move closer to or farther from each other.

6. The micro printer according to claim 5, characterized in that: The transmission member (422) includes: a first gear (4221) connected to the output end of the driving member (421); a first driving rod (4222), the first driving rod (4222) passing through the two limiting members (411) along a first direction, the first driving rod (4222) being threadedly connected to one of the limiting members (411), and the first gear (4221) being sleeved on the first driving rod (4222); a second gear (4223) meshing with the first gear (4221); and A second driving rod (4224), the second gear (4223) is sleeved on the second driving rod (4224), the second driving rod (4224) is parallel to the first driving rod (4222) and is spaced apart, the second driving rod (4224) is passed through the two limiting members (411) along the first direction, the second driving rod (4224) is threadedly connected to the other limiting member (411), and the thread directions of the first driving rod (4222) and the second driving rod (4224) and the two limiting members (411) are opposite.

7. The micro printer according to claim 6, characterized in that: The driving member (421) comprises: a third gear (4212) coaxially arranged with the first gear (4221) on the first driving rod (4222); a fourth gear (4213) meshing with the third gear (4212), wherein the axes of the fourth gear (4213) and the third gear (4212) are perpendicular; and A driving unit (4211), wherein the output end of the driving unit (4211) is connected to the fourth gear (4213), and the driving unit (4211) drives the fourth gear (4213) to rotate, thereby driving the third gear (4212) to rotate.

8. The micro printer according to any one of claims 2 to 6, characterized in that: The limiting mechanism (400) further includes: A guide assembly (450) is provided on the housing (100), and the guide assembly (450) is configured to provide guidance for the assembly process of the adjustment assembly (420) and to limit the degree of freedom of the adjustment assembly (420) in a first direction.

9. A method for adapting to different widths of paper rolls (2000), characterized in that: The following steps are involved: The limiting mechanism (400) is adjusted with the center line of the printing assembly (300) of the micro printer along the first direction as the center, and the local position of the limiting mechanism (400) is changed so that the limiting mechanism (400) limits the roll paper (2000) of different widths; The control module (500) adjusts the printing width of the printing component (300) so that the center line of the printing width of the printing component (300) corresponds to the center line of the width of the roll paper (2000).

10. The method for adapting to different widths of paper rolls (2000) according to claim 9, characterized in that: The method of controlling the control module (500) to adjust the printing width of the printing assembly (300) so that the printing width corresponds to the width of the roll paper (2000) comprises: Adjust the amount of space before printed characters; and Adjust the number of characters per line.

Images