Paper guiding structure and corresponding duplex printer

Abstract

This divisional application provides a paper guiding structure and a corresponding two-color printer. The two-color printer includes a thermal printing housing, a thermal paper feeding mechanism, a thermal printing mechanism, a cutting mechanism, a thermal paper discharging mechanism, a thermal transfer printing housing, a thermal transfer paper feeding mechanism, a thermal transfer printing mechanism, a ribbon supply mechanism, and a thermal transfer paper discharging mechanism. The thermal paper feeding mechanism, the thermal printing mechanism, the cutting mechanism, and the thermal paper discharging mechanism are arranged in the thermal printing housing. The thermal printing mechanism is used for printing black fonts on paper. The thermal transfer printing housing is arranged side by side with the thermal printing housing. The thermal transfer paper feeding mechanism, the thermal transfer printing mechanism, the ribbon supply mechanism, and the thermal transfer paper discharging mechanism are arranged in the thermal transfer printing housing. The thermal transfer printing mechanism is used for printing color fonts on paper. The two-color printer of the present invention is small in size, convenient to maintain, low in printing consumable cost at the same time, can flexibly adjust the color combination according to needs, and is relatively environmentally friendly.

Description

[0001] This application is a divisional application. The application number of the original application is: "202110676422.0", the application date is: "June 18, 2021", and the invention title is: "Intelligent Dual-color Printer and Dual-color Printing Method" Technical Field

[0002] The present invention relates to the field of dual-color printers, and particularly to a paper guiding structure and a corresponding dual-color printer. Background Art

[0003] Currently, dual-color printing is mainly applied to printing with black + red seals, power label printing, and office dual-color printing. In the existing dual-color printers, laser or inkjet printers are generally used to implement the dual-color printing method. Color laser and inkjet printing have high power consumption, and the cost of toner and ink is relatively high, resulting in a high printing cost per sheet. Therefore, it is necessary to provide a paper guiding structure and a corresponding dual-color printer to solve the above technical problems. Summary of the Invention

[0004] The present invention provides a paper guiding structure and a corresponding dual-color printer to solve the problem of high printing cost of dual-color printers in the prior art.

[0005] To solve the above technical problems, the technical solution of the present invention is: A dual-color printer, which includes:

[0006] A thermal printing housing;

[0007] A thermal paper feeding mechanism, arranged in the thermal printing housing for feeding paper;

[0008] A thermal printing mechanism, arranged in the thermal printing housing on one side of the thermal paper feeding mechanism for printing black fonts on paper;

[0009] A cutting mechanism, arranged in the thermal printing housing on the side of the thermal printing mechanism away from the thermal paper feeding mechanism for cutting paper;

[0010] A thermal paper discharging mechanism, arranged in the thermal printing housing on the side of the cutting mechanism away from the thermal printing mechanism for discharging paper;

[0011] A thermal transfer printing housing, arranged side by side with the thermal printing housing;

[0012] A thermal transfer paper feeding mechanism, arranged in the thermal transfer printing housing and near one end of the thermal transfer printing housing close to the thermal printing housing for feeding paper;

[0013] A thermal transfer printing mechanism, arranged in the thermal transfer printing housing on one side of the thermal transfer paper feeding mechanism for printing color fonts on paper;

[0014] A ribbon supply mechanism, which is arranged inside the thermal transfer printing housing, is connected to the thermal transfer printing mechanism, and is used to supply a ribbon to the thermal transfer printing mechanism;

[0015] A thermal transfer paper output mechanism, which is arranged inside the thermal transfer printing housing and is located on the side of the thermal transfer printing mechanism away from the thermal transfer paper input mechanism.

[0016] In the dual-color printer of the present invention, the thermal printing mechanism includes:

[0017] A thermal printing rubber roller, which is located on the side of the thermal paper input mechanism and is used for facilitating thermal printing;

[0018] A thermal sheet, which is located above the thermal printing rubber roller and contacts the thermal printing rubber roller, and is used for thermal printing;

[0019] A thermal pressing block, which is slidably connected inside the thermal printing housing, is connected to the thermal sheet, is located above the thermal sheet, and is provided with a plurality of limiting holes above it, and the plurality of limiting holes are evenly spaced;

[0020] A thermal pressing seat, which is located above the thermal pressing block, is connected to the top wall of the thermal printing housing, and is provided with a plurality of limiting rods at the lower end corresponding to the positions of the plurality of limiting holes, and the lower ends of the plurality of limiting rods are located inside the limiting holes;

[0021] A thermal spring, which is sleeved on the limiting rod and is used for pressing the thermal pressing block.

[0022] In the dual-color printer of the present invention, the thermal transfer printing mechanism includes:

[0023] A thermal transfer printing rubber roller, which is located on the side of the thermal transfer paper input mechanism and is used for facilitating thermal transfer printing;

[0024] A thermal transfer thermal sheet, which is located above the thermal transfer printing rubber roller and contacts the thermal transfer printing rubber roller, and is used for thermal transfer printing;

[0025] A thermal transfer pressing plate, which is connected to the thermal transfer thermal sheet and is located above the thermal transfer thermal sheet. The thermal transfer pressing plate is rotatably connected inside the thermal transfer printing housing, and the rotation connection part is located on the side close to the thermal transfer paper input mechanism;

[0026] A thermal transfer compression spring, one ends of the plurality of thermal transfer compression springs are connected to the thermal transfer pressing plate and are located on the side of the thermal transfer pressing plate away from the thermal transfer paper input mechanism;

[0027] A thermal transfer pressing block, which is connected to the ends of the plurality of thermal transfer compression springs away from the thermal transfer pressing plate.

[0028] In the dual-color printer of the present invention, the ribbon supply mechanism includes:

[0029] The ribbon output cylinder, located inside the thermal transfer printing housing, is used for outputting the ribbon;

[0030] The ribbon guiding rod, located inside the thermal transfer printing housing, is used for guiding the movement of the ribbon;

[0031] The ribbon input cylinder, located inside the thermal transfer printing housing, is used for receiving the ribbon;

[0032] The ribbon, connecting the ribbon output cylinder and the ribbon input cylinder, contacts the ribbon guiding rod and is in contact connection between the thermal transfer printing rubber roller and the thermal transfer thermal sensitive sheet.

[0033] In the dual-color printer of the present invention, a ribbon-saving pressure head mechanism is provided inside the thermal transfer printing housing. The ribbon-saving pressure head mechanism includes a rotating shaft and a cam. The rotating shaft is rotatably connected inside the thermal transfer printing housing, and the cam is sleeved on the rotating shaft and is used for squeezing the thermal transfer pressure block to facilitate thermal transfer printing.

[0034] In the dual-color printer of the present invention, the cutting mechanism includes:

[0035] The cutter groove, located between the thermal sensitive printing mechanism and the thermal sensitive paper output mechanism, is used for facilitating the cutting of paper;

[0036] The lower cutter, limited and connected inside the cutter groove, is used for cutting paper;

[0037] The upper cutter, located above the lower cutter, is used for cooperating with the lower cutter to cut paper;

[0038] The cutter driving device, connected inside the thermal sensitive printing housing, is used for driving the upper cutter to move up and down.

[0039] In the dual-color printer of the present invention, the thermal sensitive paper feeding mechanism includes two first guide paper boards arranged in parallel. The thermal sensitive paper output mechanism includes a second guide paper board and a first guide paper roller. The first guide paper roller contacts above the second guide paper board;

[0040] The thermal transfer paper feeding mechanism includes a third guide paper board and a second guide paper roller. Two of the third guide paper boards are arranged in parallel, and two of the second guide paper rollers contact. The thermal transfer paper output mechanism includes a fourth guide paper board and a third guide paper roller. Two of the fourth guide paper boards are arranged in parallel, and two of the third guide paper rollers contact.

[0041] In the dual-color printer of the present invention, a first heating sheet is provided at one end of the first guide paper board close to the thermal sensitive printing mechanism, and a second heating sheet is provided at the other end of the first guide paper board far from the thermal sensitive printing mechanism. The heating temperature of the first heating sheet is higher than that of the second heating sheet;

[0042] A third heating sheet is provided at one end of the third paper guide plate close to the thermal transfer printing mechanism, and a fourth heating sheet is provided at the other end of the third paper guide plate far from the thermal transfer printing mechanism. The heating temperature of the third heating sheet is higher than that of the fourth heating sheet.

[0043] In the dual-color printer of the present invention, a movable paper guide plate and a fourth paper guide roller are provided between the thermal printing housing and the thermal transfer printing housing. The movable paper guide plate is rotatably connected to the thermal transfer printing housing. The fourth paper guide roller contacts the movable paper guide plate. The movable paper guide plate is in an arc-shaped plate shape and includes a paper guiding portion and a clamping portion. The clamping portion is bent and connected to one end of the paper guiding portion close to the thermal paper outlet structure. One end of the clamping portion far from the paper guiding portion is pointed.

[0044] A card slot is provided at one end of the second paper guide plate far from the thermal printing mechanism.

[0045] The movable paper guide plate includes a paper guiding state and a paper outlet state. When the movable paper guide plate is in the paper guiding state, the plate surface of the paper guiding portion is parallel to the plate surface of the second paper guide plate. When the movable paper guide plate is in the paper outlet state, the plate surface of the paper guiding portion intersects the plate surface of the second paper guide plate. One end of the clamping portion far from the paper guiding portion is limitedly connected in the card slot.

[0046] A dual-color printing method includes the following steps:

[0047] Step S1: The printer receives a printing task.

[0048] Step S2: Determine whether there is black printing data. If so, go to step S3; if not, go to step S6.

[0049] Step S3: The printing data is transmitted to the dual-color printer, and the thermal printing mechanism is controlled to perform thermal printing on the paper.

[0050] Step S4: The thermal printing is completed.

[0051] Step S5: The thermal paper outlet mechanism feeds the paper into the thermal transfer paper inlet mechanism.

[0052] Step S6: Determine whether there is color printing data. If so, go to step S7; if not, go to step S9.

[0053] Step S7: Control the thermal transfer printing mechanism to perform thermal transfer printing on the paper.

[0054] Step S8: The thermal transfer printing is completed.

[0055] Step S9: Send out the printed paper.

[0056] Compared with the prior art, the beneficial effects of the present invention are as follows: For the dual-color printer of the present invention, a thermal printing mechanism is provided to print black fonts on paper, a thermal transfer printing mechanism is provided to print color fonts on paper, and a ribbon supply mechanism can provide ribbons of different colors. The printer is small in size, convenient to maintain, has low printing consumable costs, can flexibly adjust color combinations according to needs, reduces printing consumable costs and is more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following briefly introduces the drawings required to be used in the embodiments. The drawings in the following description are only the corresponding drawings of some embodiments of the present invention.

[0058] Figure 1 It is a schematic internal structure diagram of the dual-color printer of the present invention.

[0059] Figure 2 It is a schematic internal structure diagram of the thermal printing housing of the dual-color printer of the present invention.

[0060] Figure 3 It is a schematic internal structure diagram of the thermal transfer printing housing of the dual-color printer of the present invention.

[0061] Figure 4 is Figure 1 a partial enlarged view of A in

[0062] Figure 5 is Figure 4 a schematic structure diagram when the movable paper guide board is in the paper output state in

[0063] Figure 6 It is a flowchart of the dual-color printing method of the present invention.

[0064] Among them, 11 is a thermal printing housing, 12 is a thermal paper feeding mechanism, 13 is a thermal printing mechanism, 14 is a cutting mechanism, 15 is a thermal paper output mechanism, 21 is a thermal transfer printing housing, 22 is a thermal transfer paper feeding mechanism, 23 is a thermal transfer printing mechanism, 24 is a ribbon supply mechanism, 25 is a thermal transfer paper output mechanism, 26 is a ribbon-saving pressure head mechanism, 31 is a movable guide paper board, 32 is a fourth paper guide roller, 121 is a first guide paper board, 131 is a thermal printing rubber roller, 132 is a thermal sheet, 133 is a thermal pressure block, 134 is a thermal pressure seat, 135 is a thermal spring, 141 is a cutter groove, 142 is a lower cutter, 143 is an upper cutter, 144 is a cutter driving device, 151 is a second guide paper board, 152 is a first paper guide roller, 221 is a third guide paper board, 222 is a second paper guide roller, 231 is a thermal transfer printing rubber roller, 232 is a thermal transfer thermal sheet, 233 is a thermal transfer pressure plate, 234 is a thermal transfer pressure spring, 235 is a thermal transfer pressure block, 241 is a ribbon output cylinder, 242 is a ribbon guide rod, 243 is a ribbon input cylinder, 244 is a ribbon, 251 is a fourth guide paper board, 252 is a third paper guide roller, 261 is a rotating shaft, 262 is a cam, 311 is a paper guiding part, 312 is a clamping part, 1211 is a first heating sheet, 1212 is a second heating sheet, 1511 is a clamping groove, 2211 is a third heating sheet, 2212 is a fourth heating sheet. Detailed implementation manners

[0065] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0066] The directional terms mentioned in the present invention, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", "top" and "bottom" and other words, are only references to the orientation of the accompanying drawings. The directional terms used are for explaining and understanding the present invention, rather than for limiting the present invention.

[0067] The words "first", "second", etc. in the terms of the present invention are only for descriptive purposes, and cannot be understood as indicating or implying relative importance, nor as a limitation on the order of precedence.

[0068] In the present invention, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] The printing cost of a two-color printer in the prior art is relatively high.

[0070] The following is a preferred embodiment of a two-color printer and a two-color printing method provided by the present invention, which can solve the above technical problems.

[0071] Please refer to Figure 1 、 Figure 2 and Figure 3 , where Figure 1 is a schematic internal structure diagram of the two-color printer of the present invention, Figure 2 is a schematic internal structure diagram of the thermal printing housing of the two-color printer of the present invention, Figure 3 is a schematic internal structure diagram of the thermal transfer printing housing of the two-color printer of the present invention.

[0072] In the figure, units with similar structures are denoted by the same reference numerals.

[0073] The present invention provides a two-color printer, which includes a thermal printing housing 11, a thermal paper feeding mechanism 12, a thermal printing mechanism 13, a cutting mechanism 14, a thermal paper discharging mechanism 15, a thermal transfer printing housing 21, a thermal transfer paper feeding mechanism 22, a thermal transfer printing mechanism 23, a ribbon supply mechanism 24, and a thermal transfer paper discharging mechanism 25. The thermal printing housing 11 and the thermal transfer printing housing 21 are arranged in parallel. The thermal paper feeding mechanism 12 is arranged inside the thermal printing housing 11 for paper feeding. The thermal printing mechanism 13 is arranged inside the thermal printing housing 11, on one side of the thermal paper feeding mechanism 12, for printing black fonts on paper. The cutting mechanism 14 is arranged inside the thermal printing housing 11, on the side of the thermal printing mechanism 13 away from the thermal paper feeding mechanism 12, for cutting paper. The thermal paper discharging mechanism 15 is arranged inside the thermal printing housing 11, on the side of the cutting mechanism 14 away from the thermal printing mechanism 13, for paper discharging.

[0074] The thermal transfer paper feeding mechanism 22 is arranged inside the thermal transfer printing housing 21 and is located at one end of the thermal transfer printing housing 21 close to the thermal printing housing 11 for paper feeding. The paper printed by the thermal printing mechanism 13 enters the thermal transfer printing housing 21 for printing; the thermal transfer printing mechanism 23 is arranged inside the thermal transfer printing housing 21 and is located on one side of the thermal transfer paper feeding mechanism 22 for printing color fonts on the paper; the ribbon supply mechanism 24 is arranged inside the thermal transfer printing housing 21 and is connected to the thermal transfer printing mechanism 23 for supplying ribbons to the thermal transfer printing mechanism 23. The ribbon supply mechanism 24 can replace ribbons of different colors according to requirements; the thermal transfer paper output mechanism 25 is arranged inside the thermal transfer printing housing 21 and is located on the side of the thermal transfer printing mechanism 23 away from the thermal transfer paper feeding mechanism 22 for outputting the printed paper.

[0075] The thermal printing mechanism 13 is set to print black fonts on the paper, the thermal transfer printing mechanism 23 is set to print color fonts on the paper, and the ribbon supply mechanism 24 can provide ribbons of different colors, mainly according to the development temperature difference between the two materials of the thermal (coated) paper and the ribbon. Dual-color printing is achieved through precise software control. The printer is small in size, convenient to maintain, has low printing consumable costs at the same time, can flexibly adjust the color combination according to requirements, reduces the printing consumable costs and is more environmentally friendly.

[0076] The thermal printing mechanism 13 includes a thermal printing rubber roller 131, a thermal sheet 132, a thermal pressing block 133, a thermal pressing seat 134 and a thermal spring 135. The thermal printing rubber roller 131 is located on one side of the thermal paper feeding mechanism 12 for facilitating thermal printing; the thermal sheet 132 is located above the thermal printing rubber roller 131 and contacts the thermal printing rubber roller 131 for thermal printing; the thermal pressing block 133 is slidably connected inside the thermal printing housing 11, is connected to the thermal sheet 132, is located above the thermal sheet 132, and is provided with a plurality of limiting holes on the upper side. The plurality of limiting holes are evenly spaced; the thermal pressing seat 134 is located above the thermal pressing block 133, is connected to the top wall of the thermal printing housing 11, and is provided with a plurality of limiting rods at the lower end corresponding to the positions of the plurality of limiting holes. The lower ends of the plurality of limiting rods are located inside the limiting holes; the thermal spring 135 is sleeved on the limiting rods for pressing the thermal pressing block 133. The thermal pressing seat 134 is fixedly connected to the top wall of the thermal printing cartridge body. One end of the limiting rod is connected inside the limiting hole. The thermal pressing block 133 slides along the limiting rod. The thermal spring 135 is provided to press the thermal pressing block 133 and push the thermal sheet 132 into close contact with the thermal printing rubber roller 131, resulting in good printing effects.

[0077] A color ribbon saving pressure head mechanism 26 is provided inside the thermal transfer printing housing 21. The color ribbon saving pressure head mechanism 26 includes a rotating shaft 261 and a cam 262. The rotating shaft 261 is rotatably connected inside the thermal transfer printing housing 21, and the cam 262 is sleeved on the rotating shaft 261 and is located on one side of the thermal transfer printing mechanism 23. The cam 262 is used to squeeze the thermal transfer pressure block 235 to facilitate thermal transfer printing.

[0078] The thermal transfer printing mechanism 23 includes a thermal transfer printing rubber roller 231, a thermal transfer thermal sheet 232, a thermal transfer pressing plate 233, a thermal transfer compression spring 234, and a thermal transfer pressure block 235. The thermal transfer printing rubber roller 231 is located on one side of the thermal transfer paper feeding mechanism 22 and is used to facilitate thermal transfer printing; the thermal transfer thermal sheet 232 is located above the thermal transfer printing rubber roller 231 and contacts the thermal transfer printing rubber roller 231 for thermal transfer printing; the thermal transfer pressing plate 233 is connected to the thermal transfer thermal sheet 232 and is located above the thermal transfer thermal sheet 232. The thermal transfer pressing plate 233 is rotatably connected inside the thermal transfer printing housing 21, and the rotation connection is located on the side close to the thermal transfer paper feeding mechanism 22; one ends of a plurality of thermal transfer compression springs 234 are connected to the thermal transfer pressing plate 233 and are located on the side of the thermal transfer pressing plate 233 away from the thermal transfer paper feeding mechanism 22; the thermal transfer pressure block 235 is connected to one ends of the plurality of thermal transfer compression springs 234 away from the thermal transfer pressing plate 233.

[0079] The color ribbon supply mechanism 24 includes a color ribbon output cylinder 241, a color ribbon guide rod 242, a color ribbon input cylinder 243, and a color ribbon 244. The color ribbon output cylinder 241 is located inside the thermal transfer printing housing 21 and is used to output the color ribbon 244; the color ribbon guide rod 242 is located inside the thermal transfer printing housing 21 and is used to guide the movement of the color ribbon 244; the color ribbon input cylinder 243 is located inside the thermal transfer printing housing 21 and is used to receive the color ribbon 244; the color ribbon 244 connects the color ribbon output cylinder 241 and the color ribbon input cylinder 243, contacts the color ribbon guide rod 242, and is in contact connection between the thermal transfer printing rubber roller 231 and the thermal transfer thermal sheet 232.

[0080] When the protruding part of the cam 262 squeezes the thermal transfer pressure block 235, then squeezes the thermal transfer compression spring 234, and pushes one end of the thermal transfer pressing plate 233 to move downward, driving the thermal transfer thermal sheet 232 to closely contact the thermal transfer printing rubber roller 231. When the protruding part of the cam 262 moves away from the thermal transfer pressure block 235, the color ribbon 244 drives the thermal transfer thermal sheet 232 to move away from the thermal transfer printing rubber roller 231; the color ribbon saving pressure head mechanism 26 can adjust the extrusion force between the thermal transfer thermal sheet 232 and the thermal transfer printing rubber roller 231, avoid excessive wear of the color ribbon 244, and achieve the purpose of saving the color ribbon 244.

[0081] The cutting mechanism 14 includes a cutter groove 141, a lower cutter 142, an upper cutter 143, and a cutter driving device 144. The cutter groove 141 is located between the thermal printing mechanism 13 and the thermal paper output mechanism 15 for facilitating paper cutting. The lower cutter 142 is limit-connected in the cutter groove 141 for cutting paper. The upper cutter 143 is located above the lower cutter 142 for cooperating with the lower cutter 142 to cut paper. The cutter driving device 144 is connected in the thermal printing housing 11 for driving the upper cutter 143 to move up and down. The cutting edges of the upper cutter 143 and the lower cutter 142 are aligned. The cutter driving device 144 drives the upper cutter 143 to move up and down to cut paper.

[0082] The thermal paper feeding mechanism 12 includes two first guide paper boards 121 arranged in parallel. The thermal paper output mechanism 15 includes a second guide paper board 151 and a first paper guide roller 152. The first paper guide roller 152 contacts above the second guide paper board 151. The first paper guide roller 152 rotates to drive the paper to move along the surface of the second guide paper board 151. The thermal transfer paper feeding mechanism 22 includes a third guide paper board 221 and a second paper guide roller 222. The two third guide paper boards 221 are arranged in parallel. The two second paper guide rollers 222 contact each other. The rotation directions of the two second paper guide rollers 222 are opposite to drive the paper to move towards the thermal transfer printing mechanism 23. The thermal transfer paper output mechanism 25 includes a fourth guide paper board 251 and a third paper guide roller 252. The two fourth guide paper boards 251 are arranged in parallel. The two third paper guide rollers 252 contact each other. The rotation directions of the two third paper guide rollers 252 are opposite to drive the paper to move out of the thermal transfer printing housing 21 to output the printed paper.

[0083] A first heating sheet 1211 is provided at one end of the first guide paper board 121 close to the thermal printing mechanism 13, and a second heating sheet 1212 is provided at the other end of the first guide paper board 121 far from the thermal printing mechanism 13. The heating temperature of the first heating sheet 1211 is higher than that of the second heating sheet 1212. By providing the first heating sheet 1211 and the second heating sheet 1212, the thermal paper can be pre-heated to improve the printing efficiency. The heating temperature of the first heating sheet 1211 is higher than that of the second heating sheet 1212, ensuring that the temperature rise of the thermal paper is controllable, heating the thermal paper step by step with high heating efficiency, and such a setting of the heating sheets is more energy-saving.

[0084] A third guide paper board 221 is provided with a third heating sheet 2211 at one end close to the thermal transfer printing mechanism 23, and a fourth heating sheet 2212 is provided at one end far from the thermal transfer printing mechanism 23 on the third guide paper board 221. The heating temperature of the third heating sheet 2211 is greater than that of the fourth heating sheet 2212. By providing the third heating sheet 2211 and the fourth heating sheet 2212, the thermal paper can be pre-heated to improve the printing efficiency. The heating temperature of the third heating sheet 2211 is greater than that of the fourth heating sheet 2212, ensuring that the temperature rise of the thermal paper is controllable, heating the thermal paper step by step, with high heating efficiency. At the same time, the heating sheets arranged in this way are more energy-saving.

[0085] Refer to Figure 1 , Figure 4 and Figure 5 , wherein Figure 4 is Figure 1 a partial enlarged view of A in Figure 5 is Figure 4 a schematic structural diagram of the movable guide paper board in the paper output state in

[0086] An movable guide paper board 31 and a fourth guide paper roller 32 can also be provided between the thermal printing housing 11 and the thermal transfer printing housing 21. The movable guide paper board 31 is rotatably connected to the thermal transfer printing housing 21. The fourth guide paper roller 32 contacts the movable guide paper board 31. The movable guide paper board 31 is in the shape of an arc-shaped plate. The movable guide paper board 31 includes a paper guiding part 311 and a clamping part 312. The clamping part 312 is bent and connected to one end of the paper guiding part 311 close to the thermal paper output structure. One end of the clamping part 312 far from the paper guiding part 311 is in a pointed shape; a clamping groove 1511 is provided at one end of the second guide paper board 151 far from the thermal printing mechanism 13.

[0087] The movable guide paper board 31 includes a paper guiding state and a paper output state. When the movable guide paper board 31 is in the paper guiding state, that is, when black printing data and color printing data are detected, the plate surface of the paper guiding part 311 is parallel to the plate surface of the second guide paper board 151, facilitating the paper after thermal printing to enter the thermal transfer paper feeding mechanism 22. When the movable guide paper board 31 is in the paper output state, that is, when only black printing data is detected, the plate surface of the paper guiding part 311 intersects with the plate surface of the second guide paper board 151, and one end of the clamping part 312 far from the paper guiding part 311 is limited and connected in the clamping groove 1511.

[0088] When only black printing data is detected, after the thermal paper is printed by the thermal printing mechanism 13, it can be directly discharged between the thermal printing housing 11 and the thermal transfer printing housing 21 without passing through the inside of the thermal transfer printing housing 21 for transportation, thus accelerating the printing speed.

[0089] Refer to Figure 1 , Figure 2 , Figure 3 andFigure 6 , where Figure 6 is a flowchart of the two-color printing method of the present invention.

[0090] A two-color printing method includes the following steps:

[0091] Step S1: The printer receives a printing task;

[0092] Step S2: Determine whether there is black printing data. If there is, go to step S3; if not, go to step S6;

[0093] Step S3: Transmit the printing data to the two-color printer, and control the thermal printing mechanism 13 to perform thermal printing on the paper;

[0094] Step S4: Thermal printing is completed;

[0095] Step S5: The thermal paper output mechanism 15 feeds the paper into the thermal transfer paper feeding mechanism 22;

[0096] Step S6: Determine whether there is color printing data. If there is, go to step S7; if not, go to step S9;

[0097] Step S7: Control the thermal transfer printing mechanism 23 to perform thermal transfer printing on the paper;

[0098] Step S8: Thermal transfer printing is completed;

[0099] Step S9: Send out the printing paper.

[0100] In this way, the working process of the two-color printer in this preferred embodiment is completed.

[0101] In summary, although the present invention has been disclosed above with preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those of ordinary skill in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention is subject to the scope defined by the claims.

Claims

1. A paper guiding structure, characterized in that, It includes a movable paper guide plate, a fourth paper guide roller disposed between a thermal printing housing and a thermal transfer printing housing, and a thermal paper output mechanism disposed within the thermal printing housing. The thermal paper output mechanism includes a second paper guide plate and a first paper guide roller. The first paper guide roller contacts above the second paper guide plate. A thermal paper input mechanism and a thermal printing mechanism are disposed within the thermal printing housing. A cutting mechanism is disposed within the thermal printing housing, and the cutting mechanism is located on a side of the thermal printing mechanism away from the thermal paper input mechanism. The movable paper guide plate is rotatably connected to the thermal transfer printing housing. The fourth paper guide roller contacts the movable paper guide plate. The movable paper guide plate is in the shape of an arc-shaped plate. The movable paper guide plate includes a paper guiding portion and a clamping portion. The clamping portion is bent and connected to an end of the paper guiding portion close to the thermal printing housing. The movable paper guide plate has a paper guiding state and a paper output state. When the printer detects black printing data and color printing data, the movable paper guide plate is in the paper guiding state, and the plate surface of the paper guiding portion is parallel to the plate surface of the second paper guide plate, so that the paper printed within the thermal printing housing enters the thermal transfer printing housing. When the printer detects only black printing data, the movable paper guide plate is in the paper output state, and the plate surface of the paper guiding portion intersects with the plate surface of the second paper guide plate, so that the paper printed within the thermal printing housing is directly discharged between the thermal printing housing and the thermal transfer printing housing. One end of the clamping portion away from the paper guiding portion is in a pointed shape. A card slot is provided at an end of the second paper guide plate away from the thermal printing mechanism. When the movable paper guide plate is in the paper output state, one end of the clamping portion away from the paper guiding portion is connected in the card slot in a limited manner.

2. The paper guiding structure according to claim 1, wherein, The thermal paper input mechanism includes two first paper guide plates arranged in parallel. A thermal transfer paper input mechanism, a thermal transfer printing mechanism, and a thermal transfer paper output mechanism are disposed within the thermal transfer printing housing. The thermal transfer paper input mechanism is located at an end of the thermal transfer printing housing close to the thermal printing housing. The thermal transfer paper output mechanism is located on a side of the thermal transfer printing mechanism away from the thermal transfer paper input mechanism. The thermal transfer paper input mechanism includes a third paper guide plate and a second paper guide roller. The two third paper guide plates are arranged in parallel. The two second paper guide rollers contact each other. The thermal transfer paper output mechanism includes a fourth paper guide plate and a third paper guide roller. The two fourth paper guide plates are arranged in parallel. The two third paper guide rollers contact each other.

3. The paper guiding structure according to claim 2, characterized in that, A first heating sheet is provided at an end of the first paper guide plate close to the thermal printing mechanism, and a second heating sheet is provided at an end of the first paper guide plate away from the thermal printing mechanism. The heating temperature of the first heating sheet is greater than the heating temperature of the second heating sheet.

4. The paper guiding structure according to claim 2, wherein A third heating sheet is provided at an end of the third paper guide plate close to the thermal transfer printing mechanism, and a fourth heating sheet is provided at an end of the third paper guide plate away from the thermal transfer printing mechanism. The heating temperature of the third heating sheet is greater than the heating temperature of the fourth heating sheet.

5. A two-color printer, characterized in that, Using the paper guiding structure described in any one of claims 2-4, it further includes a thermal printing mechanism, the cutting mechanism, a thermal transfer printing mechanism, and a ribbon supply mechanism; The thermal printing mechanism is arranged inside the thermal printing housing, on one side of the thermal paper feeding mechanism. The thermal transfer printing mechanism is arranged inside the thermal transfer printing housing, on one side of the thermal transfer paper feeding mechanism. The ribbon supply mechanism is arranged inside the thermal transfer printing housing and is connected to the thermal transfer printing mechanism; The thermal printing mechanism includes: A thermal printing rubber roller, located on one side of the thermal paper feeding mechanism, for facilitating thermal printing; A thermal sheet, located above the thermal printing rubber roller, contacting the thermal printing rubber roller, for thermal printing; A thermal pressing block, slidably connected inside the thermal printing housing, connected to the thermal sheet, located above the thermal sheet. A plurality of limiting holes are arranged above the thermal pressing block, and the plurality of limiting holes are evenly spaced; A thermal pressing seat, located above the thermal pressing block, connected to the top wall of the thermal printing housing. A plurality of limiting rods are arranged at the lower end of the thermal pressing seat corresponding to the positions of the plurality of limiting holes, and the lower ends of the plurality of limiting rods are located inside the limiting holes; A thermal spring, sleeved on the limiting rod, for pressing the thermal pressing block; The thermal transfer printing mechanism includes: A thermal transfer printing rubber roller, located on one side of the thermal transfer paper feeding mechanism, for facilitating thermal transfer printing; A thermal transfer thermal sheet, located above the thermal transfer printing rubber roller, contacting the thermal transfer printing rubber roller, for thermal transfer printing; A thermal transfer pressing plate, connected to the thermal transfer thermal sheet, located above the thermal transfer thermal sheet. The thermal transfer pressing plate is rotatably connected inside the thermal transfer printing housing, and the rotation connection is located on the side close to the thermal transfer paper feeding mechanism; A thermal transfer compression spring, one ends of the plurality of thermal transfer compression springs are connected to the thermal transfer pressing plate and are located on the side of the thermal transfer pressing plate away from the thermal transfer paper feeding mechanism; A thermal transfer pressing block, connected to the ends of the plurality of thermal transfer compression springs away from the thermal transfer pressing plate; The ribbon supply mechanism includes: A ribbon output cylinder, located inside the thermal transfer printing housing, for outputting the ribbon; A ribbon guiding rod, located inside the thermal transfer printing housing, for guiding the movement of the ribbon; A ribbon input cylinder, located inside the thermal transfer printing housing, for receiving the ribbon; A ribbon, connecting the ribbon output cylinder and the ribbon input cylinder, contacting the ribbon guiding rod, and contacting and connecting between the thermal transfer printing rubber roller and the thermal transfer thermal sheet; The cutting mechanism includes: A cutter groove, located between the thermal printing mechanism and the thermal paper output mechanism, for facilitating paper cutting; A lower cutter, limitedly connected inside the cutter groove, for cutting paper; An upper cutter, located above the lower cutter, for cooperating with the lower cutter to cut paper; A cutter driving device, connected inside the thermal printing housing, for driving the upper cutter to move up and down.

6. The two-color printer according to claim 5, characterized in that, A color ribbon saving pressure head mechanism is further arranged inside the thermal transfer printing housing. The color ribbon saving pressure head mechanism includes a rotating shaft and a cam. The rotating shaft is rotatably connected inside the thermal transfer printing housing, and the cam is sleeved on the rotating shaft and used for extruding the thermal transfer pressing block to facilitate thermal transfer printing.

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