Pattern printing device and patterning equipment

Abstract

The utility model belongs to the technical field of photovoltaic and semiconductor manufacturing, and provides an image printing device and imaging equipment. The movement module is arranged on the pattern printing workbench, and the movement module can reciprocate in the first movement direction, the second movement direction and the third movement direction; the bearing unit is arranged on the movement module, and the bearing unit is suitable for bearing a substrate and can move in the first movement direction; the ink jetting unit is arranged on the movement module and is suitable for jetting liquid hot melting ink drops to the substrate; wherein the first movement direction, the second movement direction and the third movement direction are arranged at an angle, and the first movement direction is the conveying direction of the substrate. According to the invention, the mask layer is formed by adopting a jet printing mode of hot melt ink jet, the ink jet unit is arranged on the motion module, the relative position of the ink jet unit and the substrate can be adjusted, diversified mask layer sizes can also be adapted, different requirements of customers are met, and the automatic rhythm requirement of mass production is favorably met.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic and semiconductor manufacturing, and specifically relates to a printing device and a graphic equipment. Background Art

[0002] At present, the printing process, that is, making a pattern mask on the surface of the battery cell, is an important process in the production process of solar cell electrodes.

[0003] In the related art, the printing process usually adopts screen printing or laser etching. The printing method using screen printing has a long process, cumbersome operation, and it is difficult to modify and replace the graphics, and the printing efficiency is low. The printing method using laser etching has low material utilization rate, expensive equipment, high printing cost and low printing efficiency. Utility Model Content

[0004] In view of this, the utility model provides a printing device and a graphic device to solve the problem of low printing efficiency in the printing process in the prior art.

[0005] The utility model provides a printing device, which includes: a printing workbench; a motion module, which is arranged on the printing workbench, and the motion module can reciprocate in a first motion direction, a second motion direction and a third motion direction; a carrying unit, which is arranged on the motion module, and the carrying unit is suitable for carrying a substrate and can move in the first motion direction; an inkjet unit, which is arranged on the motion module, and the inkjet unit is suitable for spraying liquid hot-melt ink droplets onto the substrate; wherein the first motion direction, the second motion direction and the third motion direction are arranged at an angle, and the first motion direction is the conveying direction of the substrate.

[0006] As an optional embodiment, the motion module includes: a first linear motion mechanism, suitable for linear motion in the first motion direction, and the bearing unit is provided at one end of the first linear motion mechanism; a second linear motion mechanism, suitable for linear motion in the second motion direction; a third linear motion mechanism, arranged on the second linear motion mechanism, and the third linear motion mechanism is suitable for linear motion in the third motion direction; wherein the inkjet unit is arranged on the third linear motion mechanism, and the first motion direction, the second motion direction and the third motion direction are perpendicular to each other.

[0007] As an optional implementation, the first linear motion mechanism and the second linear motion mechanism are linear motors respectively, and the third linear motion mechanism is a moving screw module.

[0008] As an optional implementation, the carrying unit has a carrying surface, and the substrate is placed on and covers the carrying surface.

[0009] As an optional implementation, the printing device further includes a limiting structure, and the limiting structure is suitable for positioning the substrate on the carrying unit.

[0010] As an optional embodiment, the printing device further includes a cooling unit, and the cooling unit is suitable for cooling the substrate on the carrying unit.

[0011] As an optional implementation, the printing device further includes a rotating mechanism, which is disposed at the bottom of the carrying unit and fixed to the motion module, and is suitable for driving the carrying unit to rotate at an angle.

[0012] As an optional embodiment, the printing device also includes a visual positioning module, which is arranged on the printing workbench, and after the visual positioning module is suitable for visually positioning the substrate on the carrying unit, the motion module drives the carrying unit to move to the printing area of ​​the inkjet unit.

[0013] As an optional embodiment, the inkjet unit includes an ink supply assembly and a nozzle, and the ink supply assembly is suitable for conveying liquid hot melt ink to the nozzle.

[0014] The utility model provides a graphic device, characterized in that it comprises any one of the printing devices and a pre-cooling unit, wherein the pre-cooling unit is suitable for cooling a substrate before printing.

[0015] Beneficial effect: The present application adopts a printing device to realize hot-melt inkjet printing on a substrate, wherein the picoliter-level liquid hot-melt ink ejected by the inkjet unit can be printed on a preset position on the substrate as needed and condensed and solidified to form a pattern mask. The operation is simple and the printing efficiency is high. In addition, since the ink droplets can be accurately landed on the preset position of the substrate to directly condense and solidify into shape, the molding quality of the mask is improved, that is, the fineness of the mask pattern lines is improved. The inkjet unit and the carrier unit are arranged on a motion module. On the one hand, the relative position of the inkjet unit and the substrate can be adjusted, which is beneficial for correcting the position of the substrate before printing, and can also adapt to a variety of mask layer sizes to meet the different needs of customers. On the other hand, making the carrier unit move in the first direction during printing is more conducive to meeting the automated rhythm requirements of mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the three-dimensional structure of the printing device of an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of the top view of the printing device according to one embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of the top view of the bearing unit of the printing device according to one embodiment of the utility model;

[0020] Figure 4 It is a schematic diagram of a top view of the structure of a carrying unit of a printing device according to another embodiment of the utility model;

[0021] Figure 5 The block diagram of the printing device of the embodiment of the utility model is shown in FIG.

[0022] Description of reference numerals:

[0023] 200, printing device; 202, substrate; 203, heating element; 210, printing workbench; 220, motion module; 221, first linear motion mechanism; 222, second linear motion mechanism; 223, third linear motion mechanism; 230, carrying unit; 240, inkjet unit; 241, nozzle; 250, visual positioning module; 260, rotating mechanism; 270, limiting structure; 280, cooling unit; X, first motion direction; Y, second motion direction; Z, third motion direction. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0028] Combine the following Figures 1 to 5 , describing an embodiment of the utility model.

[0029] like Figure 1 and Figure 2 As shown, according to an embodiment of the utility model, a printing device 200 is proposed, which includes a printing workbench 210, a motion module 220, a carrying unit 230 and an inkjet unit 240. The motion module 220 is arranged on the printing workbench 210, and the motion module 220 can reciprocate in a first motion direction X, a second motion direction Y and a third motion direction Z. The carrying unit 230 is arranged on the motion module 220, and the carrying unit 230 is suitable for carrying a substrate 102 and can move in the first motion direction X. The inkjet unit 240 is arranged on the motion module 220, and the inkjet unit 240 is suitable for spraying liquid hot melt ink droplets onto the substrate 202, wherein the first motion direction X, the second motion direction Y and the third motion direction Z are arranged at an angle, and the first motion direction X is the conveying direction of the substrate 202.

[0030] In this embodiment, the printing workbench 210 can be a marble workbench. The motion module 220 can move in three-dimensional directions of a first motion direction X, a second motion direction Y, and a third motion direction Z, so as to adjust the relative position of the inkjet unit 240 and the carrier unit 230. The printing step direction of the inkjet printing is the first direction. The second direction is the horizontal direction, and the third direction is the vertical direction.

[0031] In the field of photovoltaic and semiconductor manufacturing technology, screen printing, laser etching and photosensitive resin etching have shortcomings.

[0032] Disadvantages of silk screen printing: (1) High-precision silk screen printing screens are expensive and have a short service life; (2) Different screens are only for one product, and the replacement operation is more complicated than modifying the graphics by inkjet printing; (3) The current silk screen printing process is relatively complex, and it is difficult to industrialize widths of 20μm and below; (4) The contact method has a high fragmentation rate.

[0033] Disadvantages of laser etching: (1) High energy consumption; (2) Lower operating speed than inkjet printing; (3) Direct placement of the laser on the substrate poses a risk of damaging the substrate.

[0034] Disadvantages of photosensitive resin lithography: (1) Low material utilization rate; (2) High material cost, mostly dependent on imports; (3) Complicated steps; (4) High cost of waste reagent and wastewater treatment.

[0035] The present application uses an inkjet unit 240 for hot melt inkjet printing. Hot melt inkjet printing uses hot melt material as the printing material. The printing material is solid before use. When used, it is melted into liquid by heat energy in the inkjet unit 240, and then sprayed onto the surface of the solar cell to condense and solidify to form a patterned mask. The printing material usually selected has a viscosity of 0.1mPa-S to 20mPa-S when the temperature is greater than 50°C, and a viscosity greater than or equal to 10000mPa-S or solid when the temperature is less than 25°C, such as one or more of acrylic acid, rosin ester resin, C11-C22 alkyl acid, polypropylene wax, microcrystalline wax, polyethylene wax, and ethylene vinyl acetate copolymer wax.

[0036] The printing device 200 of the present application can realize hot-melt inkjet printing on the substrate 202, wherein the picoliter-level liquid hot-melt ink ejected by the inkjet unit 240 can be printed on a preset position on the substrate 202 as needed and condensed and solidified to form a pattern mask. The operation is simple and the printing efficiency is high. In addition, since the ink droplets can accurately fall on the preset position of the substrate 202 to directly condense and solidify into shape, the molding quality of the mask is improved, that is, the fineness of the mask pattern lines is improved; the inkjet unit 240 and the carrier unit 230 are arranged on the motion module 220. On the one hand, the relative position of the inkjet unit 240 and the substrate 202 can be adjusted, which is beneficial for correcting the position of the substrate 202 before printing, and can also adapt to a variety of mask layer sizes to meet the different needs of customers. On the other hand, making the carrier unit 230 move in the first direction during printing is more conducive to meeting the automated rhythm requirements of mass production.

[0037] In another embodiment, Figure 5 As shown, the printing device 200 further includes a limiting structure 270 , which is suitable for positioning the substrate 202 on the carrying unit 230 .

[0038] Combination Figure 3 As shown, the limiting structure 270 may be a vacuum adsorption structure, which is used to adsorb and position the substrate 102. The vacuum adsorption structure includes a vacuum pumping device disposed outside the carrier unit 230, a flow channel disposed inside the carrier unit 230, and a plurality of small holes disposed on the carrier unit 230, wherein the plurality of small holes are respectively connected to the flow channel. The vacuum adsorption structure draws a vacuum on the flow channel so that the substrate 202 can be adsorbed on the carrier unit 230. The limiting structure 270 using vacuum adsorption can automatically adjust the adsorption force used to adsorb the substrate 202, and has a high degree of automation.

[0039] Combination Figure 4 As shown, the limiting structure 270 can also be a mechanical limiting structure, and the mechanical limiting structure is a pressing member arranged on the bearing unit 230, and the pressing member can press the substrate 202 on the bearing unit 230. Alternatively, the mechanical limiting structure can also be a card slot arranged on the bearing surface of the bearing unit 230, and the substrate 202 is clamped in the card slot, so as to achieve the positioning of the substrate 202. Alternatively, the mechanical limiting structure can also be a limiting column arranged on the bearing unit 230, and a plurality of limiting columns are arranged circumferentially to form a space, and the limiting columns can limit the substrate 202 in the space. The mechanical limiting structure is adopted, because the mechanical limiting structure is fixed, the positioning of the substrate 202 on the bearing sheet can be made more accurate.

[0040] In another embodiment, Figure 5 As shown, the printing device 200 further includes a cooling unit 280 , which is suitable for cooling the substrate 202 on the carrying unit 230 .

[0041] Temperature has a great influence on the solidification rate of liquid hot melt ink droplets. During the hot melt inkjet printing process, the solidification rate of ink droplets on the surface of the battery cell at room temperature is low, which means that the ink droplets solidify for a long time on the surface of the battery cell at room temperature. This will not only prolong the residence time of the battery cell in the printing process and affect the production efficiency, but also the long spreading time of the ink droplets on the surface of the battery cell will affect the morphology of the ink droplets and thus affect the molding quality of the pattern film mask. In addition, the substrate 202 needs to be printed multiple times in certain sizes to complete the preparation of the single-sided mask pattern. Since the condensation of the ink droplets will release heat and transfer it to the substrate 202, it will cause the surface temperature of the substrate 202 to be different during multiple printings, resulting in large differences in the size and morphology of the ink droplets condensed and formed in different areas of the single-sided mask, which directly affects the quality of the single-sided mask pattern.

[0042] By setting the cooling unit 280, the temperature of the substrate 202 on the supporting unit 230 is reduced, which is conducive to the rapid condensation and formation of ink droplets after they fall on the substrate 202, reduces the solidification time of the ink droplets, eliminates the temperature difference between different areas of the substrate 202 during multiple printing on a single side, and improves the molding quality of the mask pattern.

[0043] The cooling method of the cooling unit 280 can be contact cooling and air purge cooling. To simplify the structure, the cooling unit 280 can be integrally arranged on the carrier unit 230 with the fixing unit. Specifically, the carrier unit 230 is a vacuum cooling platform, and a plurality of flow channels are arranged inside the vacuum cooling platform. Some of the flow channels have small holes at the top and are connected to the vacuum pump through pipes, and some of the flow channels are filled with cold air or liquid cooling medium.

[0044] In another embodiment, Figure 1 and Figure 2 As shown, the carrying unit 230 has a carrying surface, and the substrate 202 is placed on and covers the carrying surface.

[0045] In this embodiment, the substrate 202 is placed on the carrying surface. When the substrate 202 does not cover the carrying surface, during the hot melt inkjet printing on the first surface of the substrate 202, since it takes a certain amount of time for the liquid hot melt ink droplets to completely condense and form on the substrate 202, there is a risk that the ink droplets falling on the edge of the first surface of the substrate 202 will overflow onto the carrying surface outside the substrate 202, thereby possibly contaminating the carrying surface and affecting the printing and printing efficiency of the pattern mask on the second surface of the substrate 202. Arranging the substrate 202 to cover the carrying surface can keep the carrying surface clean, which is conducive to the preparation of double-sided pattern masks for the substrate 202 and improves the double-sided printing efficiency.

[0046] In another embodiment, Figure 2 and Figure 5As shown, the printing device 200 further includes a rotating mechanism 260 , which is disposed at the bottom of the carrying unit 230 and fixed to the motion module 220 . The rotating mechanism 260 is suitable for driving the carrying unit 230 to rotate.

[0047] The bottom of the carrier unit 230 is provided with a rotating mechanism 260 connected to the motion module 220, which can adjust the position of the substrate 102. The rotating mechanism 260 is a direct drive rotary motor (Direct Drive Ratary, DD motor for short).

[0048] In another embodiment, the inkjet unit 240 includes an ink supply assembly and a nozzle 241 , and the ink supply assembly is suitable for delivering liquid hot melt ink to the nozzle 241 .

[0049] The ink supply assembly is provided with a heating element 203, which is used to heat the solid printing material. The printing material is melted into a liquid by the heat energy, and then sprayed onto the surface of the solar cell to condense and solidify to form a patterned mask. The heating element 203 is one or more of infrared heat radiation, a heating sheet, a heating block, and a heating rod, so that the liquid ink can reach a suitable viscosity and surface tension.

[0050] In another embodiment, continue to combine Figure 2 As shown, the motion module 220 includes a first linear motion mechanism 221, a second linear motion mechanism 222 and a third motion mechanism. The first linear motion mechanism 221 is suitable for linear motion in a first motion direction X, and a bearing unit 230 is provided at one end of the first linear motion mechanism 221; the second linear motion mechanism 222 is suitable for linear motion in a second motion direction Y; the third linear motion mechanism 223 is arranged on the second linear motion mechanism 222, and the third linear motion mechanism 223 is suitable for linear motion in a third motion direction Z; wherein the inkjet unit 240 is arranged on the third linear motion mechanism 223, and the first motion direction X, the second motion direction Y and the third motion direction Z are perpendicular to each other.

[0051] The first linear motion mechanism 221 is arranged on the printing workbench 210, and a carrying unit 230 is provided at one end of the first linear motion mechanism 221. The carrying unit 230 is suitable for carrying the substrate 102 of the main conveyor line 101. The second linear motion mechanism 222 is arranged on the printing workbench 210, and the direction of the linear motion of the second linear motion mechanism 222 is perpendicular to the movement direction of the first linear motion mechanism 221. The third linear motion mechanism 223 is arranged on the second linear motion mechanism 222, and the movement direction of the third linear motion mechanism 223 is perpendicular to the movement direction of the second linear motion mechanism 222.

[0052] In another embodiment, the first linear motion mechanism 221 and the second linear motion mechanism 222 are linear motors respectively, and the third linear motion mechanism 223 is a moving screw module.

[0053] In this embodiment, a U-shaped frame is provided on the printing workbench 210, and the second linear motion mechanism 222 is connected to the U-shaped frame. The above-mentioned first linear motion mechanism 221 is a linear motor, and the linear motion direction of the first linear motion mechanism 221 is parallel to the conveying direction of the main conveying line 101. The linear motion direction of the third linear motion mechanism 223 is a vertical direction, so that the position of the inkjet unit 240 can rise or fall. The third linear motion mechanism 223 is a moving screw module. The second linear motion mechanism 222 and the first linear motion mechanism 221 are linear motors respectively. The linear motion direction of the second linear motion mechanism 222 is the longitudinal direction of the horizontal plane, so that the inkjet unit 240 can be close to or away from the first linear motion mechanism 221.

[0054] In another embodiment, the printing device 200 also includes a visual positioning module 250, which is disposed on the printing workbench 210, and the visual positioning module 250 is suitable for visually positioning the substrate 202 on the carrier unit 230, and then the motion module 220 drives the carrier unit 230 to move to the printing area of ​​the inkjet unit 240.

[0055] The working process of the printing device 200 is as follows: when the carrier unit 230 moves to the visual positioning module 250, the visual positioning module 250 takes a photo of the substrate 102 placed on the carrier unit 230 and captures the visual position. If the position of the substrate 102 is not qualified, the rotating mechanism 260 is controlled to rotate the carrier unit 230 until the position of the substrate 102 on the carrier unit 230 is qualified. Alternatively, the second linear motion mechanism 222 is controlled to move linearly so that the inkjet unit 240 connected to the second linear motion mechanism 222 moves closer to or away from the carrier unit 230 to adjust the relative position between the substrate 202 on the carrier unit 230 and the inkjet unit 240 until the relative position between the substrate 202 and the inkjet unit 240 is qualified. In some cases, the position of the substrate 202 is corrected by controlling the rotation mechanism 260 to rotate and controlling the movement of the second linear motion mechanism 222, which will not be described in detail here.

[0056] When the position of the substrate 102 is qualified, the inkjet unit 240 is turned on to perform hot melt inkjet printing on the substrate 202 .

[0057] The present application also provides a patterning device, which includes the printing device 200 and a pre-cooling unit in any one of the items, and the pre-cooling unit is suitable for cooling the substrate 202 before printing.

[0058] Graphical equipment is mainly used for making mask layers in photovoltaics and semiconductors.

[0059] The graphic device also includes a main conveying line for conveying the substrate 202. A loading station, a printing station and an unloading station are arranged in sequence along the conveying direction of the main conveying line. The printing device 200 is arranged at the printing station.

[0060] By setting a pre-cooling unit at the loading station on the main conveyor line, the surface temperature of the substrate 202 entering the printing station can be reduced to an ideal temperature in advance, thereby increasing the solidification rate of the hot-melt ink droplets on the surface of the substrate 202 and reducing the solidification time of the ink droplets on the surface of the substrate 202, thereby improving the production efficiency and the molding quality of the pattern mask to a certain extent. In addition, compared with the cooling unit 280 for cooling the substrate 202 set on the carrier unit 230, pre-cooling the substrate 202 in advance can also reduce the difference in the double-sided mask pattern lines caused by the presence of the mask when the double-sided mask of the substrate 202 is printed.

[0061] Obviously, the above embodiments are merely examples for clear description and are not limitations of the implementation methods.

[0062] For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the protection scope of the invention of the utility model.

Claims

1. A printing device, characterized in that: The printing device (200) comprises: Printing workbench (210); A motion module (220) is disposed on the printing workbench (210), and the motion module (220) can reciprocate in a first motion direction (X), a second motion direction (Y), and a third motion direction (Z); A carrying unit (230), arranged on the motion module (220), the carrying unit (230) being suitable for carrying the substrate (102) and being movable in the first motion direction (X); An inkjet unit (240) is disposed on the motion module (220), and the inkjet unit (240) is suitable for spraying liquid hot melt ink droplets onto the substrate (202); The first movement direction (X), the second movement direction (Y) and the third movement direction (Z) are arranged at an angle, and the first movement direction (X) is the conveying direction of the substrate (202).

2. The printing device according to claim 1, characterized in that: The motion module (220) comprises: A first linear motion mechanism (221), adapted to perform linear motion in the first motion direction (X), wherein the bearing unit (230) is provided at one end of the first linear motion mechanism (221); A second linear motion mechanism (222), adapted to perform linear motion in the second motion direction (Y); A third linear motion mechanism (223) is provided on the second linear motion mechanism (222), and the third linear motion mechanism (223) is suitable for linear motion in the third motion direction (Z); Wherein, the inkjet unit (240) is arranged on the third linear motion mechanism (223), and the first motion direction (X), the second motion direction (Y) and the third motion direction (Z) are perpendicular to each other.

3. The printing device according to claim 2, characterized in that: The first linear motion mechanism (221) and the second linear motion mechanism (222) are respectively linear motors, and the third linear motion mechanism (223) is a moving screw module.

4. The printing device according to any one of claims 1 to 3, characterized in that: The carrying unit (230) has a carrying surface, and the substrate (202) is placed on the carrying surface and covers the carrying surface.

5. The printing device according to any one of claims 1 to 3, characterized in that: The printing device (200) further comprises a limiting structure (270), wherein the limiting structure (270) is suitable for positioning the substrate (202) on the carrying unit (230).

6. The printing device according to any one of claims 1 to 3, characterized in that: The printing device (200) further comprises a cooling unit (280), wherein the cooling unit (280) is suitable for cooling the substrate (202) on the carrying unit (230).

7. The printing device according to any one of claims 1 to 3, characterized in that: The printing device (200) further comprises a rotating mechanism (260), wherein the rotating mechanism (260) is arranged at the bottom of the carrying unit (230) and fixed on the motion module (220), and the rotating mechanism (260) is suitable for driving the carrying unit (230) to rotate at a certain angle.

8. The printing device according to claim 7, characterized in that: The printing device (200) further comprises a visual positioning module (250), wherein the visual positioning module (250) is arranged on the printing workbench (210), and the visual positioning module (250) is suitable for visually positioning the substrate (202) on the carrying unit (230), and then driving the carrying unit (230) to rotate by the rotating mechanism (260), and / or, driving the inkjet unit (240) and the carrying unit (230) to move relative to each other in the second movement direction (Y) by the movement module (220), so as to correct the position of the substrate (202) on the carrying unit (230).

9. The printing device according to any one of claims 1 to 3, characterized in that: The inkjet unit (240) comprises an ink supply assembly and a nozzle (241), wherein the ink supply assembly is suitable for conveying liquid hot melt ink to the nozzle (241).

10. A graphical device, characterized in that: It comprises a printing device (200) as claimed in any one of claims 1 to 9 and a pre-cooling unit, wherein the pre-cooling unit is suitable for cooling a substrate (202) before printing.

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