Printing device and printing method

Abstract

A printing device and a printing method. The printing device comprises a housing (10), a printing assembly (20), and a flattening assembly (30); the housing has a paper feeding end (101) and a paper discharge end (102); the printing assembly is arranged inside the housing; the flattening assembly is arranged in the housing and is located between the paper feeding end and the printing assembly, and the flattening assembly at least comprises a first flattening member and a second flattening member arranged opposite to the first flattening member; and during printing, the first flattening member presses a printing thin material against the second flattening member, and allows the printing thin material to be driven by the printing assembly to move towards the downstream of a conveying direction. The problem of the printing thin material being prone to wrinkling during printing, resulting in affecting the printing effect can be solved.

Description

Printing device and printing method

[0001] Cross Reference to Related Applications

[0002] This application claims priority to the patent application No. 202410661875.X, filed on May 24, 2024, with the State Intellectual Property Office of China, and entitled “Printing device and printing method”, the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of printing device, in particular, relates to a printing device and a printing method. BACKGROUND

[0004] In the printer product, especially the pocket printer, the overall volume is small and convenient to move. Due to the above advantages of the pocket printer, the pocket printer is widely used in the life and work of users.

[0005] However, the existing pocket printing device is limited by the volume, so only the printing assembly is arranged in the pocket printer, and the user needs to place the printing sheet in the pocket printer to complete the printing.

[0006] In the process of using the printing device, different printing sheets need to be selected according to different printing requirements of the user. The double printing sheet suitable for the thermal printer is soft and shaped as a structure with two layers, which is prone to wrinkles in the process of use or placement. The appearance of wrinkles will cause wrinkles on the printing result of the printing sheet, which will affect the printing effect and the user experience.

[0007] As can be seen from the above, the current printing device has the problem that the wrinkles of the printing sheet are prone to appear wrinkles in the printing process, which affects the printing effect.

[0008] SUMMARY

[0009] The main purpose of the present application is to provide a printing device and a printing method to solve the problem that the printing device in the prior art is prone to wrinkles in the printing process, which affects the printing effect.

[0010] In order to achieve the above object, according to one aspect of the present application, a printing device is provided, which comprises a casing having a paper feeding end and a paper discharging end; a printing assembly arranged in the interior of the casing; a flattening assembly arranged in the casing and located between the paper feeding end and the printing assembly, the flattening assembly comprising at least a first flattening member and a second flattening member arranged opposite to the first flattening member; during printing, the first flattening member presses the printing sheet against the second flattening member and allows the printing sheet to move downstream in the conveying direction under the driving of the printing assembly.

[0011] In one embodiment of the present application, the first flattening member has a first flattening surface and the second flattening member has a second flattening surface.

[0012] In one embodiment of the present application, the first flattening surface and the second flattening surface are arranged opposite to each other to form a clamping channel in communication with the paper feeding end, allowing the printing sheet to pass through the clamping channel under the driving of the printing assembly.

[0013] In one embodiment of the present application, the flattening assembly is closer to the printing assembly than to the paper feeding end.

[0014] In one embodiment of the present application, the first flattening surface and the second flattening surface are substantially parallel to the conveying direction of the printing sheet.

[0015] In one embodiment of the present application, the casing comprises a first casing body and a second casing body, and the first flattening member and the second flattening member are arranged in the first casing body and the second casing body respectively.

[0016] In one embodiment of the present application, the first casing body and the second casing body are rotationally connected.

[0017] In one embodiment of the present application, the first flattening surface and / or the second flattening surface is a friction surface.

[0018] In one embodiment of the present application, at least one of the first flattening member and the second flattening member is an elastic flattening member.

[0019] In one embodiment of the present application, when the first flattening member presses the printing sheet against the second flattening member, the first flattening member and / or the second flattening member deforms.

[0020] In one embodiment of the present application, the elastic flattening member comprises a first connecting structure connected to the casing and forming a first connecting layer; an elastic structure arranged on the side of the first connecting structure away from the casing and forming an elastic layer; a second connecting structure arranged on the side of the elastic structure away from the first connecting structure and forming a second connecting layer; and a contact structure arranged on the side of the second connecting layer away from the elastic structure, the surface of the contact structure away from the second connecting layer being a friction surface.

[0021] In an embodiment of the present application, the contact structure comprises a first flattening surface or a second flattening surface.

[0022] In an embodiment of the present application, the contact structure is longer than the elastic structure in the transmission direction, and the contact structure extends beyond the elastic structure both upstream and downstream.

[0023] In an embodiment of the present application, the upstream section of the second connecting structure connects the casing and the contact structure, and the middle section connects the elastic structure and the contact structure.

[0024] In an embodiment of the present application, the upstream section of the first connecting structure connects the casing and the contact structure, and the middle section connects the casing and the elastic structure.

[0025] In an embodiment of the present application, the first casing and / or the second casing has a mounting groove, and the elastic flattening surface is arranged in the mounting groove.

[0026] In an embodiment of the present application, the total thickness of the second connecting structure and the contact structure is equal to or slightly less than the depth of the mounting groove.

[0027] In an embodiment of the present application, the first connecting structure is a double-sided adhesive structure; and / or the elastic structure is a sponge; and / or the second connecting structure is a double-sided adhesive structure; and / or the contact structure is a PC sheet.

[0028] In an embodiment of the present application, the first flattening surface and / or the second flattening surface has a guide surface section and a pressing surface section, and the distance between the oppositely arranged guide surface sections gradually decreases.

[0029] In an embodiment of the present application, the oppositely arranged pressing surface sections are substantially parallel to the transmission direction and allow close contact with the printing sheet.

[0030] In an embodiment of the present application, the first flattening surface and / or the second flattening surface further has a transition surface section arranged downstream of the pressing surface section.

[0031] In an embodiment of the present application, the printing assembly comprises a printing roller rotatably arranged in the casing, a thermal sheet arranged in the casing, the printing roller being oppositely arranged with the thermal sheet, and an elastic member, one end of which is arranged in the casing and the other end of which is arranged in the thermal sheet, the elastic member pressing the thermal sheet in a direction away from the casing and close to the printing roller.

[0032] According to another aspect of the present application, a printing method is provided, the printing method comprising:

[0033] Opening the casing of the printing device and placing the printing sheet, the printing sheet being at least partially located at the position of the printing assembly;

[0034] Closing the casing, the printing sheet being pressed by the oppositely arranged first flattening surface and the second flattening surface.

[0035] The printing thin material is moved downstream along the transmission direction under the driving of the printing assembly and is printed by the printing assembly;

[0036] The paper outlet outputs the printed printing thin material.

[0037] According to another aspect of the present application, a printing method is provided, which is applied to the printing device described above, and the printing method comprises:

[0038] The printing device is opened and the printing thin material is placed, and the printing thin material is at least partially located at the position of the printing assembly;

[0039] The printing device is closed, and the printing thin material is pressed to the second flattening member by the oppositely arranged first flattening member;

[0040] The printing thin material is moved downstream along the transmission direction under the driving of the printing assembly and is printed by the printing assembly;

[0041] The paper outlet outputs the printed printing thin material.

[0042] According to the technical solution of the present application, the printing device comprises a housing, a printing assembly and a flattening assembly. The housing has a paper inlet and a paper outlet. The printing assembly is arranged in the housing. The flattening assembly is arranged in the housing and located between the paper inlet and the printing assembly. The flattening assembly comprises at least a first flattening member and a second flattening member arranged opposite to the first flattening member. During printing, the first flattening member presses the printing thin material to the second flattening member, and allows the printing thin material to move downstream along the transmission direction under the driving of the printing assembly.

[0043] The printing thin material moves along the transmission direction. At least one flattening surface of the flattening assembly is in contact with the printing thin material to provide a friction force to flatten and remove wrinkles of the printing thin material, thereby avoiding the occurrence of wrinkles.

[0044] As can be seen from the above, the printing device and method of the present application can flatten and remove wrinkles of the printing thin material passing through the flattening assembly during printing, thereby ensuring that the flat and wrinkle-free printing thin material is transmitted to the printing assembly for printing, which is beneficial to improve the printing effect.

[0045] The flattening assembly of the present application comprises two oppositely arranged flattening members. The flattening members flatten the printing thin material through the structure of surface-to-surface contact with the printing thin material, which improves the contact area of the flattening members with the printing thin material and is beneficial to improve the flattening effect. Meanwhile, the structure of the contact between the flattening members and the printing thin material is beneficial to provide a compensation force to the printing thin material in printing to overcome the occurrence of wrinkles. BRIEF DESCRIPTION OF DRAWINGS

[0046] The drawings constituting a part of the specification illustrate the exemplary embodiments of the present application and serve to explain the present application, and do not constitute an undue limitation on the present application. In the drawings:

[0047] Fig. 1 shows a structural schematic diagram of a printing device of the present application;

[0048] Fig. 2 shows a side view of a printing device of the present application;

[0049] Fig. 3 shows a cross-sectional view along A-A in Fig. 2;

[0050] Fig. 4 shows a structural schematic diagram of cooperation of two flattening pieces of the present application;

[0051] Fig. 5 shows a three-dimensional structural schematic diagram of a flattening piece of the present application;

[0052] Fig. 6 shows a structural side view of a flattening piece of the present application;

[0053] Fig. 7 shows another structural schematic diagram of a flattening piece of the present application;

[0054] Fig. 8 shows a flow chart of a printing method of the present application.

[0055] In the above drawings, the following reference signs are used: 10, casing; 101, paper feeding end; 102, paper discharging end; 110, first casing; 111, upper accommodating space; 120, second casing; 121, lower accommodating space; 20, printing assembly; 210, printing roller; 220, thermal sheet; 230, elastic piece; 30, flattening assembly; 301, flattening piece; 3011, guiding surface section; 3012, pressing surface section; 3013, transition surface section; 310, flattening piece; 311, first connecting structure; 312, elastic structure; 313, second connecting structure; 314, contact structure. DETAILED DESCRIPTION

[0056] It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0057] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0058] In the present application, the orientation words such as "upper, lower, top, bottom" are generally directed to the directions shown in the drawings, or are directed to the vertical, perpendicular or gravity direction of the components themselves; similarly, for the convenience of understanding and description, "inner, outer" refers to the inner and outer relative to the contour of the components themselves, but the above orientation words are not used to limit the present application.

[0059] Embodiment one

[0060] In order to solve the problem that the existing printing equipment has wrinkles in the process of printing thin materials, which affects the printing effect, the present embodiment provides a printing equipment, which is a small pocket type printing equipment to facilitate the demand for convenient printing.

[0061] As shown in FIGS. 1-7, the printing equipment includes a casing 10, a printing assembly 20 and a flattening assembly 30, the casing 10 has a paper feeding end 101 and a paper discharging end 102, the printing assembly 20 is arranged inside the casing 10, and the flattening assembly 30 is arranged inside the casing 10 and located between the paper feeding end 101 and the printing assembly 20, the flattening assembly 30 at least includes oppositely arranged flattening surfaces 301, which are in contact with the printing thin materials for guiding and flattening wrinkles.

[0062] Among them, the printing thin materials move along the transmission direction, at least one flattening surface 301 of the flattening assembly 30 provides friction force by pressing contact with the printing thin materials to flatten and remove wrinkles of the printing thin materials, thereby avoiding the occurrence of wrinkles.

[0063] In the present embodiment, along the transmission direction of the printing thin materials, the paper feeding end 101 and the paper discharging end 102 are arranged on both sides of the casing 10 to realize the movement of the printed printing thin materials from the paper discharging end 102.

[0064] Specifically, the printing equipment of the present embodiment can flatten and remove wrinkles of the printing thin materials passing through the flattening assembly 30 during printing, thereby ensuring that the flat and wrinkle-free printing thin materials are transmitted to the printing assembly 20 for printing, which is beneficial to improve the printing efficiency.

[0065] In the present embodiment, the flattening assembly 30 of the present embodiment adopts two oppositely arranged flattening pieces 310, which realize flattening of the printing thin materials by face-to-face contact with the printing thin materials, thereby improving the contact area between the flattening piece 310 and the printing thin materials and being beneficial to improve the flattening effect.

[0066] In the present embodiment, the flattening assembly 30 includes a first flattening piece and a second flattening piece, the first flattening piece has a first flattening surface, the second flattening piece has a second flattening surface, and at least one of the first flattening surface and the second flattening surface provides friction force by pressing contact with the printing thin materials.

[0067] In the embodiment, the casing 10 comprises a first shell 110 and a second shell 120, the first shell 110 and the second shell 120 are rotationally connected, specifically, the first shell 110 and the second shell 120 are hinged to achieve the rotationally open and close between the first shell 110 and the second shell 120. When the printing sheet is placed, the first shell 110 is rotated to open the first shell 110 and the second shell 120, the printing sheet is moved along the paper feeding end 101 and the flattening surface 301 to a position in contact with the printing assembly 20, and then the first shell 110 is rotated to close to realize that the two flattening surfaces 301 are attached to the two surfaces of the printing sheet. During the movement of the printing sheet in the transmission direction, at least one flattening surface 301 provides friction to flatten the printing sheet, thereby avoiding wrinkles that affect the printing effect.

[0068] Among them, the first shell 110 is provided with a first flattening piece, and the second shell 120 is provided with a second flattening piece.

[0069] It should be noted that in the embodiment, the printing assembly 20 provides driving force for the movement of the printing sheet, and the flattening piece 310 provides tensioning force for the part of the printing sheet not in contact with the printing assembly 20 to flatten the wrinkles.

[0070] In the embodiment, the relative arrangement of the flattening surfaces 301 forms a clamping channel communicating with the paper feeding end 101, that is, the clamping channel is formed between the first flattening surface and the second flattening surface, allowing the printing sheet to pass through the clamping channel under the drive of the printing assembly, and the relative arrangement of the flattening surfaces 301 is used to flatten and remove wrinkles of the printing sheet passing through the clamping channel. The printing sheet moves along the transmission direction and passes through the clamping channel towards the paper outlet end 102.

[0071] In the embodiment, along the transmission direction of the printing sheet, the side of the clamping channel away from the paper feeding end 101 is arranged opposite to the printing assembly 20, and compared with the paper feeding end, the flattening assembly is closer to the printing assembly to facilitate the printing sheet to contact the printing assembly 20 for printing after passing through the clamping channel, and to place the printing sheet directly after flattening to improve the printing efficiency.

[0072] In the embodiment, the flattening surface 301 is substantially parallel to the transmission direction of the printing sheet to ensure that the printing sheet contacts and is parallel to the flattening surface 301 during movement, which is conducive to the movement of the printing sheet and also avoids wrinkles during the movement of the printing sheet.

[0073] As shown in FIGS. 1-7, one of the two oppositely arranged flattening surfaces 301 is provided on the first housing 110, and the other of the two oppositely arranged flattening surfaces 301 is provided on the second housing 120. During relative rotation of the first housing 110 and the second housing 120, the oppositely arranged flattening surfaces 301 clamp the printing sheet for flattening and removing wrinkles or release the clamping of the printing sheet.

[0074] Specifically, during relative rotation of the first housing 110 and the second housing 120, the flattening surfaces 301 move with the first housing 110 and the second housing 120. When the first housing 110 and the second housing 120 are in the closed state, the two oppositely arranged flattening surfaces 301 can contact the printing sheet, thereby providing tension and flattening the printing sheet.

[0075] In the embodiment, the flattening assembly 30 includes flattening members 310 provided on the surfaces of the first housing 110 and the second housing 120 facing each other, and the flattening members 310 have the flattening surfaces 301. The flattening members 310 provided on the casing 10 provide the flattening surfaces 301, thereby flattening the printing sheet.

[0076] In the embodiment, the flattening members 310 include a first flattening member provided on the first housing 110 and a second flattening member provided on the second housing 120. The flattening surface 301 of the first flattening member can be a first flattening surface, which is a friction surface. Alternatively, the flattening surface 301 of the second flattening member can be a second flattening surface, which is a friction surface. Of course, the flattening surfaces 301 of the first flattening member and the second flattening member can both be friction surfaces, which contact the printing sheet to provide tension of the printing sheet.

[0077] The first housing 110 has an upper accommodating space 111, and the first flattening member is arranged inside the upper accommodating space 111. The second housing 120 has a lower accommodating space 121, and the second flattening member is arranged inside the lower accommodating space 121.

[0078] In one specific embodiment, the flattening surface 301 of one flattening member 310 contacts the printing sheet to provide friction, and the other flattening member 310 is used to support the printing sheet for contact of the printing sheet with the friction surface.

[0079] In another specific embodiment, both of the flattening surfaces 301 are friction surfaces, so that both of the flattening surfaces 301 can flatten the printing sheet, which is beneficial to improve the printing efficiency.

[0080] In the embodiment, the flattening member 310 for providing the friction surface is an elastic flattening member, and the material of the elastic flattening member is a flexible material, so as to facilitate providing the friction force for the printing thin material. In the embodiment, the materials of the two flattening members 310 are the same, so as to provide the friction surface of the second flattening member arranged oppositely.

[0081] When the first flattening member presses the printing thin material towards the second flattening member, the first flattening member and / or the second flattening member is deformed.

[0082] As shown in FIGS. 1-3, the elastic flattening member includes a first connecting structure 311, an elastic structure 312, a second connecting structure 313, and a contact structure 314. The first connecting structure 311 is arranged on a side close to the shell 10 and connected with the shell 10 to form a first connecting layer. The elastic structure 312 is arranged on a side of the first connecting structure 311 away from the shell 10 to form an elastic layer. The second connecting structure 313 is arranged on a side of the elastic structure 312 away from the first connecting structure 311 to form a second connecting layer. The contact structure 314 is arranged on a side of the second connecting layer away from the elastic structure 312. The surface of the contact structure 314 away from the second connecting layer is a friction surface.

[0083] Specifically, the first connecting layer, the elastic layer, the second connecting layer, and the contact structure 314 arranged in sequence form a multi-layer structure. The first connecting layer and the second connecting layer are used to play a connecting role, realize the connection between the flattening member 310 and the shell 10, and the connection and fixation between the multi-layer structure. The elastic structure 312 is used to provide an elastic force for providing the elastic force for the contact between the contact structure 314 and the printing thin material. The contact structure 314 is used to provide the friction surface for providing the flattening and wrinkle removal through the contact between the friction surface and the printing thin material.

[0084] In the embodiment, the first connecting structure 311 is double-sided adhesive tape, so as to realize the adhesion between one side of the double-sided adhesive tape and the shell 10 and the connection between the other side of the double-sided adhesive tape and the elastic structure 312, so as to realize the adhesion and fixation effect. In the embodiment, the first connecting layer is a first adhesion layer formed by the double-sided adhesive tape.

[0085] In the embodiment, the elastic structure 312 is a sponge, so as to provide the elastic force. In the embodiment, the sponge satisfies the density of 25-31 kg / m 3 , the hardness of 60-80 N, the tensile strength of not less than 5 N / cm 2 , and the tensile rate of not less than 90%.

[0086] In the embodiment, the second connecting structure 313 is double-sided adhesive tape, so as to realize the adhesion between one side of the double-sided adhesive tape and the elastic structure 312 and the connection between the other side of the double-sided adhesive tape and the contact structure 314, so as to realize the adhesion and fixation effect. In the embodiment, the second connecting layer is a second adhesion layer formed by the double-sided adhesive tape.

[0087] In the embodiment, the contact structure 314 is a PC sheet, which is used to provide a friction surface with a friction coefficient of 0.1-0.2. When the friction coefficient of the friction surface of the contact structure 314 in the embodiment satisfies 0.1-0.2, the friction surface can provide stable tension force to flatten the printing sheet and will not affect the normal movement of the printing sheet along the conveying direction, which is conducive to ensuring the stability of flattening and printing.

[0088] In the embodiment, as shown in FIGS. 1-3, the extension length of the second connecting structure 313 and the contact structure 314 along the conveying direction of the printing sheet is greater than the extension length of the first connecting structure 311 and the elastic structure 312, and the upstream and downstream of the contact structure both exceed the elastic structure, which is conducive to realizing the transition of the printing sheet towards the printing assembly 20.

[0089] Specifically, the second connecting structure 313 is connected to the elastic structure 312 on one side of the surface of the elastic structure 312, and is connected to the housing 10 on the other side of the surface of the elastic structure 312. Specifically, the upstream section of the second connecting structure 313 is connected to the housing 10 and the contact structure 314, and the middle section of the second connecting structure 313 is connected to the elastic structure 312 and the contact structure 314. The connection of the second connecting structure 313 to the housing 10 is conducive to further improving the stability of the connection between the flattening member 310 and the housing 10. Meanwhile, the other part of the second connecting structure 313 is connected to the housing 10 to realize the fixed connection of the contact structure 314 to the housing 10 through the second connecting structure 313. The second connecting structure 313 is used to fix the contact structure 314 to ensure the fixed arrangement of the flattening surface 301.

[0090] Specifically, the upstream section of the first connecting structure 311 is connected to the housing 10 and the contact structure 314, and the middle section of the first connecting structure 311 is connected to the housing 10 and the elastic structure 312.

[0091] In the embodiment, the housing 10 is provided with a mounting groove, the first connecting structure 311 is arranged in the interior of the mounting groove, at least a part of the elastic structure 312 is arranged in the interior of the mounting groove, and at least a part of the second connecting layer is connected to the outer edge of the slot of the mounting groove to shield the mounting groove.

[0092] Specifically, the housing 10 is provided with a mounting groove to realize the embedding of the first connecting structure 311 and the elastic structure 312 of the flattening member 310 in the interior of the mounting groove, so as to avoid the phenomenon of paper jam caused by the protruding arrangement of the first flattening member.

[0093] Specifically, the second connecting layer is arranged at the slot of the mounting groove and shields the slot, which is conducive to ensuring the contact area of the contact layer and improving the aesthetic appearance.

[0094] Specifically, the total thickness of the second connecting structure 313 and the contact structure 314 is equal to or slightly smaller than the depth of the mounting groove.

[0095] In the embodiment, the contact layer covers the elastic layer, so that the flattening surface 301 of the flattening member 310 is in contact with the printing sheet, and the elasticity provided by the elastic structure 312 is inside the area of the contact structure 314, so that the corresponding area provides stable elastic force. In the embodiment, the surface of the side of the elastic structure 312 facing the contact structure 314 is arranged flush with the slot of the mounting slot.

[0096] In the embodiment, since the shell includes the first shell 110 and the second shell 120, the mounting slot can be arranged on the first shell 110, or the mounting slot can be arranged on the second shell 120, or the mounting slot can be arranged on both the first shell and the second shell.

[0097] As shown in FIGS. 1-7, at least one of the flattening surfaces 301 has a guide surface section 3011 and a pressing surface section 3012 along the conveying direction of the printing sheet, the distance between the two oppositely arranged guide surface sections 3011 gradually decreases along the conveying direction of the printing sheet, the pressing surface section 3012 is parallel to the conveying direction of the printing sheet and allows the printing sheet to be tightly attached to the printing sheet, and the distance between the two oppositely arranged pressing surface sections 3012 is smaller than the distance between the two guide surface sections 3011.

[0098] Specifically, in the process of placing the printing sheet, the printing sheet is first placed on the guide surface section 3011 and moved along the guide surface section 3011 to the pressing surface section 3012 and then moved to the position in contact with the printing assembly 20.

[0099] It can be understood that the guide surface section 3011 in the embodiment is a slope section, so that the printing sheet is moved to the pressing surface section 3012 and then to the printing assembly 20 through the slope section, and in this process, the printing sheet remains in contact with the flattening surface 301, which can avoid the imagination that the printing sheet in the area between the flattening member 310 and the printing assembly 20 is prone to wrinkles.

[0100] In the embodiment, the included angle A between the extension direction of the guide surface section 3011 and the conveying direction of the printing sheet satisfies 2°≤A≤8°, and in one embodiment, A is 5°. When the included angle between the extension direction of the guide surface section 3011 and the conveying direction of the printing sheet is 5°, it is convenient for the guide movement of the printing sheet, and it is also convenient for the installation and fixation of the flattening member 310.

[0101] In the embodiment, the extension length H of the flattening surface 301 along the extension direction of the guiding surface section 3011 satisfies 27.8mm≤H≤28mm, and in an embodiment, H is 27.9mm; the extension length H1 of the compression surface section 3012 along the transmission direction of the printing sheet satisfies 5mm≤H1≤8mm, and in an embodiment, H1 is 6.7mm; the length H2 of the guiding surface section 3011 along the extension direction of the guiding surface section 3011 satisfies 9.5mm≤H2≤9.7mm, and in an embodiment, H2 is 9.6mm.

[0102] In the embodiment, the thickness H3 of the elastic structure 312 on the side facing the paper feeding end 101 is 0.7mm, and the thickness H4 of the elastic structure 312 on the side facing the paper discharging end 102 is 1.5mm.

[0103] In the embodiment, the thickness H5 of the contact structure 314 is 0.1mm, and the thickness H6 of the first connecting structure 311 and the second connecting structure 313 is 0.15mm.

[0104] In the embodiment, the flattening surface 301 further has a transition surface section 3013 arranged on the side of the compression surface section 3012 away from the guiding surface section 3011, the transition surface section 3013 is arranged downstream of the compression surface section 3012, and the transition surface section 3013 is arranged opposite the printing assembly 20. The transition surface section 3013 is used to further ensure that the flattened printing sheet moves to the printing assembly 20.

[0105] It can be understood that the transition surface section 3013 is formed as a part of the contact structure 314 located outside the mounting groove.

[0106] As shown in FIGS. 1-7, the printing assembly 20 includes a printing roller 210 and a thermal sheet 220, the printing roller 210 is rotatably arranged in the casing 10, and the thermal sheet 220 is arranged in the casing 10, and a printing gap through which the printing sheet passes is formed between the printing roller 210 and the thermal sheet 220.

[0107] Specifically, the printing roller 210 is used to provide power for the movement of the printing sheet, the printing sheet moves to the inside of the printing gap, the thermal sheet 220 and the printing roller 210 cooperate to implement a printing operation on the printing sheet, and the printed printing sheet moves out of the casing 10 along the paper discharging end 102.

[0108] In the embodiment, the printing roller 210 is arranged on the first casing 110 or the second casing 120 of the casing 10, the thermal sheet 220 is arranged on the second casing 120 of the casing 10, and the printing device further includes a driving member arranged on the casing 10, the driving member is in driving connection with the printing roller 210 to realize rotation of the printing roller 210.

[0109] In the embodiment, the heat-sensitive sheet 220 extends along the width direction of the printing sheet, and the length of the heat-sensitive sheet 220 and the length of the flattening surface 301 are not less than the width of the printing sheet.

[0110] In the embodiment, the printing assembly 20 further comprises an elastic member 230, one end of the elastic member 230 is arranged on the second housing 120, and the other end of the elastic member 230 is connected with the heat-sensitive sheet 220, and the elastic member 230 provides an elastic force for the movement of the side of the heat-sensitive sheet 220 towards the printing roller 210.

[0111] In the embodiment, when the heat-sensitive sheet 220 contacts the printing sheet for printing, the high temperature of the heat-sensitive sheet 220 can cause the printing sheet to gather and wrinkle, and the two flattening surfaces 301 arranged oppositely are used to clamp the printing assembly 20, and the face-to-face clamping and pressing means is used to overcome and compensate the gathering of the printing sheet caused by the heat-sensitive sheet 220 by the tension force. The structure of the flattening assembly 30 can not only flatten the printing sheet passing through the clamping channel, but also flatten the printing sheet at the position contacting the heat-sensitive sheet 220.

[0112] Embodiment two

[0113] The embodiment further provides a printing method, as shown in FIG. 8, the printing method comprises:

[0114] opening the machine shell 10 and placing the printing sheet;

[0115] closing the machine shell 10 and starting printing;

[0116] the printing sheet moves along the transmission direction, the part of the printing sheet passing through the flattening surface 301 is pressed and flattened, and the printing sheet is removed from the machine shell 10 by the paper outlet end 102.

[0117] In the embodiment, the first housing 110 of the machine shell 10 is opened by rotating the first housing 110, then the printing sheet is placed on the flattening surface 301 of the second housing 120 and at least a part of the printing sheet contacts the printing roller 210 of the printing assembly 20, so as to ensure that the printing sheet is at least partially located at the position of the printing assembly, then the first housing 110 is rotated to close the first housing 110 and the second housing 120, the printing sheet is pressed to the second flattening surface by the first flattening surface arranged oppositely, and the two flattening surfaces 301 are attached to the printing sheet for flattening the printing sheet.

[0118] In the embodiment, the step of opening the machine shell 10 and placing the printing sheet comprises moving the printing sheet along the guide surface section 3011 of the flattening surface 301 of the flattening assembly 30 to contact the printing assembly 20.

[0119] In the process of placing the printing sheet, the printing sheet is first placed on the guide surface section 3011 and moved along the guide surface section 3011 to the pressing surface section 3012 and then to the position in contact with the printing assembly 20.

[0120] It can be understood that the guide surface section 3011 in the embodiment is a slope section, so as to move the printing sheet to the pressing surface section 3012 and then to the printing assembly 20 through the slope section, and in this process, the printing sheet keeps in contact with the flattening surface 301, so as to avoid the imagination that the printing sheet in the area between the flattening member 310 and the printing assembly 20 is prone to wrinkle.

[0121] In the embodiment, in the step of closing the casing 10 and starting printing, the first casing 110 and the second casing 120 of the casing 10 close the flattening member 310 on the first casing 110 and the flattening member 310 on the second casing 120 to press the printing sheet, the printing sheet is moved downstream in the conveying direction under the driving of the printing assembly, and is printed by the printing assembly.

[0122] Embodiment three

[0123] The embodiment also provides a printing method applied to the printing device in the embodiment one.

[0124] As shown in FIG. 8, the printing method comprises:

[0125] opening the casing 10 and placing the printing sheet;

[0126] closing the casing 10 and starting printing;

[0127] moving the printing sheet in the conveying direction, the part of the printing sheet passing through the flattening surface 301 is pressed and flattened, and the printing sheet is removed from the casing 10 by the paper outlet 102.

[0128] In the embodiment, the first casing 110 and the second casing 120 of the casing 10 are opened by rotating the first casing 110 of the casing 10, then the printing sheet is placed on the flattening surface 301 of the second casing 120 and at least a part of the printing sheet is in contact with the printing roller 210 of the printing assembly 20, so as to ensure that the printing sheet is at least partially located at the printing assembly, then the first casing 110 is rotated to close the first casing 110 and the second casing 120, the printing sheet is pressed to the second flattening member by the first flattening member oppositely arranged, and the two flattening surfaces 301 are attached to the printing sheet for flattening the printing sheet.

[0129] In the embodiment, in the step of opening the casing 10 and placing the printing sheet, the printing sheet is moved along the guide surface section 3011 of the flattening surface 301 of the flattening assembly 30 to be in contact with the printing assembly 20.

[0130] In the process of placing the printing sheet, the printing sheet is first placed on the guide surface section 3011 and moved along the guide surface section 3011 to the pressing surface section 3012 and then to a position in contact with the printing assembly 20.

[0131] It can be understood that the guide surface section 3011 in the embodiment is a slope section, so as to move the printing sheet to the pressing surface section 3012 and then to the printing assembly 20 through the slope section, and in this process, the printing sheet keeps in contact with the flattening surface 301, so as to avoid the imagination that the printing sheet in the area between the flattening member 310 and the printing assembly 20 is prone to wrinkle.

[0132] In the embodiment, in the process of closing the cabinet 10 and starting printing, the first housing 110 and the second housing 120 of the cabinet 10 close the flattening member 310 on the first housing 110 and the flattening member 310 on the second housing 120 to press the printing sheet, the printing sheet is moved downstream in the conveying direction under the driving of the printing assembly, and is printed by the printing assembly.

[0133] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects:

[0134] The printing device of the present application can flatten and wrinkle the printing sheet passing through the flattening assembly 30 when printing, so as to ensure that the printing sheet without wrinkle is conveyed to the printing assembly 20 to complete printing, and is beneficial to improve the printing efficiency.

[0135] The flattening assembly 30 of the present application adopts two flattening members 310 arranged oppositely, the flattening member 310 flattens the printing sheet through the structure of surface-to-surface contact with the printing sheet, improves the contact area of the flattening member 310 and the printing sheet, is beneficial to improve the flattening effect, and the structure of contact between the flattening member 310 and the printing sheet is beneficial to provide compensation force to the printing sheet in printing to overcome the appearance of wrinkle.

[0136] Obviously, the above-mentioned embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0137] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, work, device, component and / or combination thereof.

[0138] It should be noted that the terms "first", "second", and the like, used in the description and in the claims of the present application as well as above-mentioned figures are used to distinguish similar objects and are not necessarily used to describe a specific sequential or chronological order. It is to be understood that the use of these terms here is not made with the intention of limiting scope of the embodiments of the present application described herein, but rather that the embodiments of the present application described herein are capable of functioning in other sequences, except for those explicitly described herein.

[0139] The preferred embodiments of the application described herein are only examples of the application and are not intended to limit the application. The application can have various modifications and alterations within the spirit and scope of the application. Any modifications, changes, improvements, and the like made to the application should be included within the scope of the application.

Claims

1. A printing apparatus characterized by comprising: The printing device comprises: a casing having a paper feeding end and a paper discharging end; a printing assembly arranged in the casing; a flattening assembly arranged in the casing and located between the paper feeding end and the printing assembly, the flattening assembly comprising at least a first flattening member and a second flattening member arranged opposite to the first flattening member; when printing, the first flattening member presses the printing sheet against the second flattening member and allows the printing sheet to move downstream in the conveying direction under the drive of the printing assembly.

2. The printing device according to claim 1, wherein: the first flattening member has a first flattening surface, and the second flattening member has a second flattening surface.

3. The printing device according to claim 2, wherein: the first flattening surface and the second flattening surface are arranged opposite to each other to form a clamping channel in communication with the paper feeding end, and the clamping channel allows the printing sheet to pass through under the drive of the printing assembly.

4. The printing device according to claim 1, wherein: the flattening assembly is closer to the printing assembly than to the paper feeding end.

5. The printing device according to claim 2, wherein the first flattening surface and the second flattening surface are substantially parallel to the conveying direction of the printing sheet.

6. The printing device according to claim 2, wherein the casing comprises a first casing body and a second casing body, and the first flattening member and the second flattening member are arranged in the first casing body and the second casing body respectively.

7. The printing device according to claim 6, wherein: the first casing body is rotatably connected to the second casing body.

8. The printing device according to claim 6, characterized by the first flattening surface and / or the second flattening surface is a friction surface.

9. The printing device according to claim 8, characterized by at least one of the first flattening member and the second flattening member is an elastic flattening member.

10. The printing device according to claim 9, wherein: when the first flattening member presses the printing sheet against the second flattening member, the first flattening member and / or the second flattening member is deformed.

11. The printing device according to claim 9, wherein the elastic flattening member comprises: a first connecting structure connected to the casing to form a first connecting layer; an elastic structure arranged on a side of the first connecting structure away from the casing to form an elastic layer; a second connecting structure arranged on a side of the elastic structure away from the first connecting structure to form a second connecting layer; and a contact structure arranged on a side of the second connecting layer away from the elastic structure, and a surface of the contact structure away from the second connecting layer is a friction surface.

12. The printing device according to claim 11, characterized by the contact structure comprises the first flattening surface or the second flattening surface.

13. The printing device according to claim 11, wherein, in the conveying direction, the contact structure is longer than the elastic structure, and the contact structure extends beyond the elastic structure both upstream and downstream.

14. The printing device according to claim 13, characterized by an upstream section of the second connecting structure connects the casing and the contact structure, and a middle section of the second connecting structure connects the elastic structure and the contact structure.

15. The printing device according to claim 13, wherein, an upstream section of the first connecting structure connects the casing and the contact structure, and a middle section of the first connecting structure connects the casing and the elastic structure.

16. The printing device of claim 11, wherein, the first casing body and / or the second casing body has a mounting groove, and the elastic flattening member is arranged in the mounting groove.

17. The printing device of claim 16, wherein, the total thickness of the second connecting structure and the contact structure is equal to or slightly smaller than the depth of the mounting groove.

18. The printing device according to claim 11, wherein: the first connecting structure is a double-sided adhesive structure; and / or the elastic structure is a sponge; and / or the second connecting structure is a double-sided adhesive structure; and / or the contact structure is a PC sheet.

19. The printing device according to claim 2, characterized by in the conveying direction, the first flattening surface and / or the second flattening surface has a guide surface section and a pressing surface section, and the distance between the guide surface sections arranged opposite to each other gradually decreases.

20. The printing device of claim 19, wherein, the pressing surface sections arranged opposite to each other are substantially parallel to the conveying direction and are allowed to tightly contact the printing sheet.

21. The printing device of claim 19, wherein, The first flattening surface and / or the second flattening surface further has a transition surface section arranged downstream of the compression surface section.

22. The printing device according to any one of claims 1 to 21, wherein, The printing assembly comprises: a printing roller rotatably arranged in the casing; a thermal sheet arranged in the casing, the printing roller being arranged opposite to the thermal sheet; a resilient member, one end of the resilient member being arranged in the casing and the other end being arranged in the thermal sheet, the resilient member pressing the thermal sheet towards the direction away from the casing and towards the printing roller.

23. A printing method, characterized by, The printing method comprises: opening the casing of the printing device and placing the printing sheet, the printing sheet being at least partially located at the position of the printing assembly; closing the casing, the printing sheet being pressed by the first flattening surface towards the second flattening surface; the printing sheet being moved downstream in the conveying direction under the driving of the printing assembly and being printed by the printing assembly; the printed printing sheet being outputted at the paper outlet end.

24. A printing method characterized by, The printing method applied to the printing device of any one of claims 1 to 22, the printing method comprising: opening the casing of the printing device and placing the printing sheet, the printing sheet being at least partially located at the position of the printing assembly; closing the casing, the printing sheet being pressed by the first flattening surface towards the second flattening surface; the printing sheet being moved downstream in the conveying direction under the driving of the printing assembly and being printed by the printing assembly; the printed printing sheet being outputted at the paper outlet end.

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