Gravure printing plate, impression cylinder and gravure printing machine

Abstract

The utility model discloses a gravure printing plate, an impression cylinder and a gravure printing machine, the gravure printing machine comprises the impression cylinder, the gravure printing plate is arranged on the outer side face of the impression cylinder, the gravure printing plate comprises at least one electrode printing unit, the gravure printing plate can be arranged in a cylindrical shape, and the electrode printing units are located on the outer side face of the gravure printing plate. The electrode printing unit comprises a main body part and a first edge part, and the main body part is rectangular; a first edge part is arranged on at least one of the two side edges, in the first direction, of the electrode printing unit, and the first edge part comprises at least one first concave area distributed in the first direction at intervals. The first concave area is formed on the outer side face of the gravure printing plate, so that it is ensured that the edge of a printing pattern of an electrode is complete, slurry at the tail of the printing pattern is prevented from overflowing, slurry accumulation is reduced, and the reliability of electrode quality is improved. The method can be widely applied to the technical field of intaglio printing.

Description

Technical Field

[0001] This application relates to the field of gravure printing technology, and in particular to a gravure printing plate, an impression cylinder, and a gravure printing machine. Background Technology

[0002] In manufacturing internal electrodes for laminated electronic components, gravure printing is typically used to print conductive paste onto a ceramic green sheet or other support to form the internal electrodes. An impression cylinder presses the ceramic green sheet or other support against the side of the gravure printing plate to create the internal electrodes.

[0003] In related technologies, if the paste thickness at the electrode edges is too large after transfer and leveling is not timely, the printed inner electrode pattern will exhibit an electrode saddle-shaped protrusion, meaning the electrode edges are significantly higher than the center. This anomaly will cause the inner electrode center to be poorly stacked during subsequent stacking processes, severely impacting the reliability of stacked electronic components. Utility Model Content

[0004] To solve at least one of the above-mentioned technical problems, this application provides a gravure printing plate, an impression cylinder, and a gravure printing machine, and the technical solution adopted is as follows.

[0005] The gravure printing press provided in this application includes an impression cylinder.

[0006] The outer surface of the impression cylinder provided in this application is provided with an intaglio printing plate.

[0007] The gravure printing plate provided in this application includes at least one electrode printing unit, which can be arranged in a cylindrical shape. The electrode printing unit is located on the outer surface of the gravure printing plate. The electrode printing unit includes a main body and a first edge portion. The main body is rectangular. The first edge portion is provided on at least one of two sides along a first direction of the electrode printing unit. The first edge portion includes at least one first recessed area distributed at intervals along the first direction. The first recessed area is formed on the outer surface of the gravure printing plate. The first direction is defined as either a direction parallel to the generatrix of the cylindrical surface of the gravure printing plate or a direction extending along the guideline of the cylindrical surface of the gravure printing plate. The other direction is defined as a second direction.

[0008] This application has at least the following beneficial effects: the electrode printing unit in the gravure printing plate has a first edge portion on its side, and the first edge portion has a first recessed area, thereby ensuring the integrity of the edge of the printed pattern of the electrode, avoiding the overflow of paste at the tail of the printed pattern, reducing paste accumulation, and improving the reliability of electrode quality. This application can be widely applied in the field of gravure printing technology.

[0009] In some embodiments of this application, the first edge portion of at least one of two sides along a first direction on the electrode printing unit includes a first recessed area and a third recessed area, the third recessed area being formed on the outer surface of the gravure printing plate and extending along the first direction; at the same side along the first direction on the electrode printing unit, the third recessed area is closer to that side of the electrode printing unit than the first recessed area.

[0010] In some embodiments of this application, the first recessed area is provided as at least two, wherein at least one of the first recessed areas is larger than the other first recessed areas, and the larger first recessed area is closer to the side of the electrode printing unit extending along the second direction than the other first recessed areas.

[0011] In some embodiments of this application, the electrode printing unit includes a second edge portion extending along a second direction. At least one of the two sides of the electrode printing unit arranged along the second direction is provided with the second edge portion, and the second edge portion is recessed into the outer surface of the gravure printing plate.

[0012] In some embodiments of this application, at least two protruding structures are provided in the second edge portion, and the protruding structures are spaced apart along the second direction; the two sides of the second edge portion extending along the second direction are each provided with the protruding structures, and the protruding structures on the two sides of the second edge portion are staggered, and a bent connecting groove is formed inside the second edge portion.

[0013] In some embodiments of this application, the main body includes an inner edge portion extending along a second direction. At least one of two sides of the main body arranged along the second direction is provided with the inner edge portion. The inner edge portion includes at least two repeating units, and the repeating units include at least one geometric shape selected from quadrilaterals, pentagons, and hexagons.

[0014] In some embodiments of this application, the repeating unit includes a hexagon, with adjacent hexagons connected, and the connecting openings of the hexagons at the inner edge of the main body are staggered.

[0015] The gravure printing plate provided in this application includes at least one electrode printing unit, which can be arranged in a cylindrical shape. The electrode printing unit is located on the outer surface of the gravure printing plate. The electrode printing unit includes a main body and a second edge portion. The main body is rectangular in shape. The second edge portion extends along a second direction. At least one of the two sides of the electrode printing unit arranged along the second direction is provided with the second edge portion. The second edge portion is recessed into the outer surface of the gravure printing plate. The first direction is defined as a direction parallel to the generatrix of the cylindrical surface of the gravure printing plate, and the second direction is defined as a direction extending along the guideline of the cylindrical surface of the gravure printing plate.

[0016] This application has at least the following beneficial effects: the electrode printing unit in the gravure printing plate has a recessed second edge portion on the side, thereby ensuring the integrity of the edge of the printed pattern on the electrode, preventing ink overflow at the tail of the printed pattern, reducing ink accumulation, and improving the reliability of electrode quality. This application can be widely applied in the field of gravure printing technology.

[0017] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0018] The present application will be further illustrated below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments illustrated in the following drawings are exemplary and are only used to explain the present application, and should not be construed as limiting the present application.

[0019] Figure 1 This is a schematic diagram of the electrode printing unit.

[0020] Figure 2 for Figure 1 A partial view of region A in the middle.

[0021] Figure 3 for Figure 1 A partial view of region A in the middle.

[0022] Reference numerals: Main body 100; First edge 210; First recessed area 211; Third recessed area 212; Second edge 220; Inner edge of the main body 300. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1 To be continued Figure 3 The embodiments of this application are described in detail below, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0024] In the description of this application, it should be understood that the terms "center", "middle", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0025] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0026] In the description of this application, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] In the description of this application, the use of terms such as "as one implementation," "an embodiment," "some examples," "some embodiments," "illustrative embodiment," "example," "specific example," "some examples," etc., indicates that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] This application relates to a gravure printing machine, which includes an impression cylinder.

[0029] This application relates to an impression cylinder, wherein an intaglio printing plate is provided on the outer side of the impression cylinder, and a transfer pattern is provided on the side of the intaglio printing plate. The intaglio printing plate is arranged in a cylindrical shape on the outer side of the impression cylinder.

[0030] Understandably, when a gravure printing press is in operation, the impression cylinder presses the ceramic raw sheet or other support onto the gravure printing plate to create the internal electrode.

[0031] Other components and operations of gravure printing presses and impression cylinders are already described in the relevant art for those skilled in the art, and will not be described in detail here. The structure of gravure printing plates will be introduced below.

[0032] This application relates to a gravure printing plate, which includes at least one electrode printing unit having an electrode pattern. The gravure printing plate can be arranged in a cylindrical shape, and the electrode printing unit is located on the outer surface of the gravure printing plate. Specifically, the electrode pattern of the electrode printing unit is recessed into the outer surface of the gravure printing plate.

[0033] Combined with appendix Figure 1 The electrode printing unit includes a main body 100, which is rectangular in shape. Furthermore, the two parallel edges of the main body 100 are arranged along the straight generatrices of the cylindrical surfaces of the gravure printing plate, and the other two parallel edges of the main body 100 are arranged along the guide lines of the cylindrical surfaces.

[0034] It should be noted that both the generatrix and the directrix refer to concepts in the definition of cylindrical geometry. The first direction is defined as the direction of the generatrix parallel to the cylindrical surface of the gravure printing plate, and the second direction is defined as the direction extending along the directrix of the cylindrical surface of the gravure printing plate. In conjunction with the rectangular shape of the main body 100, on the outer wall of the cylindrical shape of the gravure printing plate, two parallel sides of the rectangle are arranged along the first direction, and the other two parallel sides of the rectangle are arranged along the second direction.

[0035] Furthermore, in conjunction with the appendix Figure 1 and attached Figure 2 The electrode printing unit includes a first edge portion 210, and the first edge portion 210 is provided on at least one of the two sides of the electrode printing unit along a first direction. Further, the first edge portion 210 is recessed into the outer surface of the gravure printing plate.

[0036] It should be noted that in some examples, the electrode printing unit has a first edge portion 210 on both sides along the first direction. In other examples, the electrode printing unit has a first edge portion 210 on one of the two sides along the first direction.

[0037] It is understood that, from the perspective of transferring the pattern, this application provides a recessed first edge portion 210 on the outer side of the gravure printing plate and the edge of the electrode printing unit, thereby preventing the ink from overflowing at the tail of the printed pattern during the transfer stage, reducing ink accumulation at the edge of the electrode printing unit, improving the edge integrity of the printed pattern, and thus eliminating electrode protrusions and improving the reliability of electrode quality.

[0038] The first edge portion 210 includes at least one first recessed region 211 spaced apart along a first direction, the first recessed region 211 being formed on the outer surface of the gravure printing plate. Further, the recess depth of the first recessed region 211 is 12 to 20 μm. Based on the viscosity range of current pastes, if the recess depth of the first recessed region 211 is too large or too small, the viscosity of the paste needs to be adjusted; however, the adjusted paste viscosity will exceed the current standard.

[0039] In one implementation, at least two first recessed areas 211 are provided, and multiple first recessed areas 211 are spaced apart along the first direction on the side of the electrode printing unit along the first direction.

[0040] Furthermore, at least one of the first recessed areas 211 is larger than the remaining first recessed areas 211, and the larger first recessed area 211 is closer to the side of the electrode printing unit extending along the second direction than the remaining first recessed areas 211. Specifically, the larger first recessed area 211 is located at both ends of the first edge portion 210, and the remaining first recessed areas 211 are located between the larger first recessed areas 211 at both ends.

[0041] It should be noted that the large first recessed area 211 serves two purposes: it prevents ink buildup and it ensures the integrity of the edges. If all the first recessed areas 211 are small, the corners will appear incomplete during printing.

[0042] In some examples, the area of ​​the large first depression region 211 is 1000 to 2000 μm. 2 It should be noted that if the area of ​​the first recessed area 211 is too large, it will cause the paste to accumulate and affect the product performance; if the area is too small, it will cause defects at the edges and corners during printing.

[0043] In some examples, the area of ​​the small first depression region 211 is 400 to 800 μm. 2 It should be noted that if the area of ​​the first depression region 211 is less than 400 μm... 2 If the edge electrodes are too thin, then the area of ​​the first recessed region 211 is greater than 800 μm. 2 If so, the electrodes at the edges are too thick.

[0044] In some examples, two large first recessed areas 211 are provided on the side of the electrode printing unit along the first direction, with large first recessed areas 211 provided at both ends of the side, and the remaining small first recessed areas 211 are distributed at intervals along the first direction.

[0045] In some examples, the distance L1 between two adjacent small first recessed areas 211 is 4 to 10 μm. It should be noted that if the distance L1 is too large, it will affect the leveling of the slurry, and a blank area will appear between the two adjacent small first recessed areas 211, resulting in an uneven edge. If the distance L1 is too small, the slurry leveling between the two adjacent small first recessed areas 211 will overlap, and the edge will also be uneven.

[0046] In some examples, the distance L2 between adjacent small and large first recessed areas 211 is 5 to 12 μm. It should be noted that if the distance L2 is too large, it will affect the leveling of the slurry, resulting in blank areas between adjacent small and large first recessed areas 211, leading to uneven edges. If the distance L2 is too small, the slurry will overlap between adjacent small and large first recessed areas 211 during leveling, also causing uneven edges.

[0047] In some examples, the first recessed area 211 is set as a square groove. The shape of the first recessed area 211 can also be replaced with at least a circle or a trapezoid.

[0048] In some examples, the distance L3 between the first edge portion 210 and the main body portion 100 is 4 to 8 μm to maintain the integrity of the tail edge shape of the electrode along the printing direction. If the distance L3 is too large, it will affect the leveling of the paste, resulting in blank areas between the first edge portion 210 and the main body portion 100, and an uneven electrode pattern. If the distance L3 is too small, the first edge portion 210 and the main body portion 100 will overlap, also causing an uneven electrode pattern.

[0049] It should be noted that the distance L3 here refers to the distance between the adjacent edges of the first recessed area 211 and the main body 100.

[0050] In one embodiment, the first edge portion 210 of at least one of the two sides along the first direction on the electrode printing unit includes a first recessed region 211 and a third recessed region 212. The third recessed region 212 is formed on the outer surface of the gravure printing plate and extends along the first direction. Further, the third recessed region 212 is formed into an elongated groove.

[0051] Understandably, the addition of a third recessed area 212 to the first edge portion 210 can further ensure that the tail edge of the electrode along the printing direction does not overflow, reduce paste accumulation, and ensure the integrity of the edge of the printed pattern of the electrode.

[0052] Furthermore, on the same side of the electrode printing unit along the first direction, the third recessed area 212 is closer to that side of the electrode printing unit than the first recessed area 211. Specifically, on the same side of the electrode printing unit along the first direction, the third recessed area 212 is located further outward and closer to that side of the electrode printing unit compared to the first recessed area 211.

[0053] In some examples, a first edge portion 210 is provided on both sides of the electrode printing unit along the first direction, and a third recessed area 212 is provided on one of the first edge portions 210 of one side. After electrode printing and paste filling, during the process of scraping the paste on the surface, the squeegee moves from the side without the third recessed area 212 to the side with the third recessed area 212, so that the excess paste scraped by the squeegee fills the third recessed area 212, avoiding paste accumulation.

[0054] Regarding the setting of the third recessed area 212, at least the following alternative embodiments exist.

[0055] In some alternative embodiments, a first edge portion 210 is provided on both sides of the electrode printing unit along the first direction, and the first edge portion 210 on both sides is provided with a first recessed area 211 and a third recessed area 212.

[0056] In some alternative embodiments, a first edge portion 210 is provided on one of the two sides along the first direction on the electrode printing unit, and the first edge portion 210 on the side is provided with a first recessed area 211 and a third recessed area 212.

[0057] In some alternative embodiments, a first edge portion 210 is provided on at least one side of the two sides along the first direction on the electrode printing unit, and the first edge portion 210 is provided with a first recessed area 211, but no third recessed area 212 is provided.

[0058] In some examples, the distance L4 between the third recessed region 212 and the first recessed region 211 is 4 to 10 μm. Understandably, the first recessed region 211 and the third recessed region 212 act as two lines of defense, primarily to ensure the integrity of the pattern edges and prevent slurry accumulation. If the distance L4 is too large, blank areas will appear between the first recessed region 211 and the third recessed region 212, resulting in an uneven electrode pattern. If the distance L4 is too small, slurry stacking will occur, also leading to an uneven electrode pattern.

[0059] It should be noted that the distance L4 here refers to the distance between the adjacent edges of the third recessed area 212 and the first recessed area 211.

[0060] In some examples, the depth of the third recess 212 is 12 to 20 μm. Depending on the current viscosity range of the slurry, if the depth of the third recess 212 is too large or too small, the viscosity of the slurry needs to be adjusted, but the adjusted viscosity will exceed the current standard.

[0061] In some examples, the width L5 of the third recessed region 212 is 4 to 8 μm. It should be noted that if the width L5 is too large, the slurry will not fill completely, and the entire electrode will be uneven. If the width L5 is too small, the blocking effect will be poor.

[0062] In one embodiment, the electrode printing unit includes a second edge portion 220, which extends along a second direction. At least one of the two sides of the electrode printing unit arranged along the second direction is provided with the second edge portion 220.

[0063] Understandably, on the side of the electrode printing unit extending along the second direction, the second edge portion 220 extends from one end to the other, and the second edge portion 220 is formed into an elongated groove.

[0064] Furthermore, the second edge portion 220 is recessed into the outer surface of the gravure printing plate. It should be noted that both the second edge portion 220 and the first edge portion 210 are located on the side where the electrode pattern is located on the gravure printing plate, which further prevents the ink from overflowing at the tail of the printed pattern during the transfer stage, reduces ink accumulation at the edge of the electrode printing unit, thereby eliminating electrode saddle-shaped protrusions and improving the reliability of electrode quality.

[0065] In some examples, the width L7 of the second edge portion 220 extending along the first direction is 15 to 30 μm. It should be noted that if the width L7 is too large, the area of ​​the main body portion 100 becomes smaller for the same area of ​​the electrode printing unit; if the width L7 is too small, it will not serve to protect the integrity of the edge.

[0066] It should be noted that in some examples, both sides of the electrode printing unit arranged along the second direction are provided with a second edge portion 220. In other examples, one of the two sides of the electrode printing unit arranged along the second direction is provided with a second edge portion 220.

[0067] In one embodiment, at least two protruding structures are provided in the second edge portion 220. In the second edge portion 220, the protruding structures extend along a first direction, and are spaced apart along a second direction. Further, the protruding structures are evenly spaced.

[0068] Understandably, the raised structure serves to guide the edge distribution evenly during transfer, eliminate edge burrs or overflow, and increase the perpendicularity of the electrode edge.

[0069] It should be noted that, along the first direction, the extension length of the protruding structure is less than the width of the second edge portion 220.

[0070] In some examples, the extension length of the raised structure is 1 / 2 to 1 of the width of the second edge 220. It should be noted that the extension lengths of two adjacent raised structures must be equal to or greater than 1 to ensure that there are no straight connecting channels at the side edges, so that the ink stringing is discontinuous during transfer and thus avoids appearance defects.

[0071] In some examples, on the same side of the second edge 220, the spacing L6 between two adjacent protrusions is 20 to 25 μm.

[0072] In some examples, in the groove formed by the second edge portion 220, both sides of the second edge portion 220 along the second direction are provided with protruding structures, and the protruding structures on the two sides are staggered.

[0073] It should be noted that the two sides of the second edge portion 220 have staggered protrusions and the length of the protrusions is less than the width of the second edge portion 220, thereby forming a bent connecting groove inside the second edge portion 220 to keep the ink stringing discontinuous during transfer and avoid appearance defects caused by it.

[0074] Regarding the design of electrode printing units in gravure printing plates, at least the following embodiments exist.

[0075] In some embodiments, the electrode printing unit includes a main body portion 100 and a first edge portion 210, the structure of which is as described above.

[0076] In other embodiments, the electrode printing unit includes a main body portion 100 and a second edge portion 220, as described above.

[0077] In some embodiments, the electrode printing unit includes a main body 100, a first edge portion 210, and a second edge portion 220, as described above.

[0078] Based on the above description of the first direction and the second direction, as well as the first edge portion 210 and the second edge portion 220, it can be seen that the first edge portion 210 is arranged on the side of the electrode printing unit along the first direction, and the second edge portion 220 is arranged on the side of the electrode printing unit along the second direction. Regarding the arrangement of the first and second directions on the gravure printing plate and the first edge portion 210 and the second edge portion 220 in the electrode printing unit, at least the following embodiments exist.

[0079] In some embodiments, the direction parallel to the generatrix of the cylinder is designated as the first direction, and the direction extending along the directrix of the cylinder is designated as the second direction. (See attached diagram.) Figure 1 In the figure, the Y direction is the first direction and the X direction is the second direction. In this case, on the outer side of the gravure printing plate, the sides of two adjacent electrode printing units along the second direction are joined together.

[0080] In other embodiments, the direction extending along the directrix of the cylinder is designated as the first direction, and the direction parallel to the generatrix of the cylinder is designated as the second direction. (See attached figure.) Figure 1 In the figure, the X direction is the first direction and the Y direction is the second direction. In this case, on the outer surface of the gravure printing plate, the sides of two adjacent electrode printing units along the first direction are joined together.

[0081] In one embodiment, the main body 100 includes an inner edge portion 300, which is located at the edge of the main body 100. The inner edge portion 300 extends along a second direction, and the inner edge portion 300 and the second edge portion 220 are close to the same side on the electrode printing unit.

[0082] Specifically, the main body 100 has an inner edge portion 300 arranged on its side along the second direction. In the electrode printing unit, the second edge portion 220 is adjacent to the inner edge portion 300.

[0083] Furthermore, the inner edge portion 300 of the main body is recessed into the side of the gravure printing plate.

[0084] Understandably, the inner edge portion 300 of the main body portion 100 helps to reduce the overflow and accumulation of paste at the edge position during transfer, thereby eliminating the saddle-shaped protrusion of the electrode pattern and improving the reliability of the electrode quality.

[0085] In one embodiment, at least one of the two sides arranged along the second direction on the main body 100 is provided with an inner edge portion 300.

[0086] Specifically, the two sides of the main body 100 arranged along the second direction are each provided with an inner edge portion 300. Of course, as an alternative, it can also be designed such that one of the two sides of the main body 100 arranged along the second direction is provided with an inner edge portion 300.

[0087] In one embodiment, the inner edge portion 300 of the main body includes at least two repeating units on the side of the main body 100 extending along the second direction, and the repeating units of the inner edge portion 300 of the main body are arranged one after another.

[0088] Specifically, the repeating unit includes at least one geometric shape selected from quadrilaterals, pentagons, and hexagons, with the sides of the geometric shape being raised arms. The geometric shape is formed by dividing the raised arms, and the geometric shape in the repeating unit is formed as a recessed pattern under the division of the raised arms.

[0089] In some examples, the repeating unit includes hexagons, with each hexagon in the inner edge portion 300 of the main body arranged sequentially, forming a row of continuous shapes composed of hexagons on the side extending along the second direction on the main body portion 100.

[0090] Furthermore, adjacent hexagons are connected, and the connecting openings of the hexagons in the inner edge portion 300 of the main body are staggered to form a bent connecting groove in the inner edge portion 300 of the main body. This ensures that the ink stringing is discontinuous during transfer, avoiding any appearance defects. It is understood that the connecting groove has bent channels, and the design of these channels is adjusted according to the rheological properties of the transfer ink to ensure discontinuous stringing during transfer and avoid any abnormal appearance.

[0091] In some examples, the angle B1 of the obliquely distributed channels in the connecting groove relative to the side where the second edge portion 220 is located ranges from 30° to 60°.

[0092] In some examples, the width L8 of the hexagonal connection is 8 to 16 μm.

[0093] In some examples, the length of the channel formed by the connecting openings on both sides of the hexagon is 4 to 8 μm.

[0094] In some examples, the repeating units include three geometric shapes: quadrilaterals, pentagons, and hexagons, with quadrilaterals and pentagons being independent geometric shapes. In the inner edge portion 300 of the main body, each pentagon is arranged sequentially and forms a continuous shape composed of pentagons along the side of the main body 100 extending in the second direction. Quadrilaterals are spaced apart and form a continuous shape composed of quadrilaterals along the side of the main body 100 extending in the second direction. Each hexagon is arranged sequentially and forms a continuous shape composed of hexagons along the side of the main body 100 extending in the second direction, and bent connecting grooves are formed within these continuous hexagonal shapes.

[0095] In some examples, the depth of the recess in the geometry of the repeating unit is 12 to 20 μm.

[0096] In some examples, the area of ​​the pentagons in the repeating units ranges from 500 to 2000 μm. 2 .

[0097] In some examples, the area of ​​the quadrilaterals in the repeating unit ranges from 200 to 1000 μm. 2 .

[0098] In some examples, the area of ​​the hexagons in the repeating unit ranges from 1000 to 4000 μm. 2 It should be noted that the area of ​​the hexagon is adjusted based on the amount of transfer required for printing.

[0099] It should be noted that, depending on the size of the main body 100, at least one inner edge portion 300 is provided on the inner side of each of the two sides extending along the second direction on the main body 100.

[0100] In some examples, at least two inner edge portions 300 are provided on the inner sides of the two sides extending along the second direction on the main body 100. On the sides of the main body 100 along the first direction, each inner edge portion 300 is distributed sequentially. On the sides of the main body 100 extending along the second direction, repeating units of the inner edge portions 300 are continuously distributed along the second direction.

[0101] In one embodiment, the main body 100 is provided with recesses to form a transfer pattern. The main body 100 is divided by protrusions to form recessed transfer patterns, and the recesses are designed with different geometric shapes according to the shape of the transfer pattern.

[0102] In some examples, the main body 100 has raised sections that separate multiple connected hexagonal units, forming a recessed transfer pattern. Each hexagonal unit has connecting openings on both sides, and multiple hexagonal units have interconnected channels. Furthermore, the channels are obliquely distributed to maintain discontinuous ink stringing during transfer, avoiding any resulting appearance defects.

[0103] In some examples, the angle B2 of the oblique distribution of the bent channels in the connecting groove ranges from 30° to 60° relative to the side where the second edge portion 220 is located.

[0104] In some examples, the port width L9 of the hexagonal cell is 8 to 16 μm.

[0105] In some examples, the length of the channel formed by the connecting ports on both sides of the hexagonal cell in the hexagonal cell is 4 to 8 μm.

[0106] In some examples, the area of ​​the hexagonal cells ranges from 2000 to 8000 μm. 2 It should be noted that the area of ​​the hexagonal unit is adjusted based on the amount of transfer required for printing.

[0107] In some examples, the recess depth of the hexagonal cells is 12 to 20 μm.

[0108] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A gravure printing plate, characterized in that: The printing plate includes at least one electrode printing unit, the gravure printing plate being arranged in a cylindrical shape, and the electrode printing unit being located on the outer surface of the gravure printing plate; the electrode printing unit includes... The main body is rectangular in shape. The first edge portion is provided on at least one of the two sides of the electrode printing unit along the first direction. The first edge portion includes at least one first recessed area distributed at intervals along the first direction. The first recessed area is formed on the outer surface of the gravure printing plate. The first direction is defined as either the direction parallel to the generatrix of the cylindrical surface of the gravure printing plate or the direction extending along the guideline of the cylindrical surface of the gravure printing plate, and the other is defined as the second direction.

2. The gravure printing plate according to claim 1, characterized in that: The first edge portion of at least one of the two sides along the first direction of the electrode printing unit includes a first recessed area and a third recessed area, the third recessed area being formed on the outer surface of the gravure printing plate and extending along the first direction. On the same side of the electrode printing unit along the first direction, the third recessed area is closer to that side of the electrode printing unit than the first recessed area.

3. The gravure printing plate according to claim 1 or 2, characterized in that: The first recessed area is configured as at least two, wherein at least one of the first recessed areas is larger than the other first recessed areas, and the larger first recessed area is closer to the side of the electrode printing unit extending along the second direction than the other first recessed areas.

4. The gravure printing plate according to claim 1, characterized in that: The electrode printing unit includes a second edge portion, which extends along a second direction. At least one of the two sides of the electrode printing unit arranged along the second direction is provided with the second edge portion, which is recessed into the outer surface of the gravure printing plate.

5. The gravure printing plate according to claim 4, characterized in that: The second edge portion is provided with at least two protruding structures, which are spaced apart along the second direction; both sides of the second edge portion extending along the second direction are provided with the protruding structures, which are staggered on the two sides of the second edge portion, and a bent connecting groove is formed inside the second edge portion.

6. The gravure printing plate according to claim 1, 2, 4, or 5, characterized in that: The main body includes an inner edge portion extending along a second direction. At least one of the two sides of the main body arranged along the second direction is provided with the inner edge portion. The inner edge portion includes at least two repeating units, and the repeating units include at least one geometric shape selected from quadrilaterals, pentagons, and hexagons.

7. The gravure printing plate according to claim 6, characterized in that: The repeating unit includes hexagons, with adjacent hexagons connected, and the connecting openings of the hexagons on the inner edge of the main body are staggered.

8. A gravure printing plate, characterized in that: The printing plate includes at least one electrode printing unit, the gravure printing plate being arranged in a cylindrical shape, and the electrode printing unit being located on the outer surface of the gravure printing plate; the electrode printing unit includes... The main body is rectangular in shape. The second edge portion extends along a second direction, and at least one of the two sides arranged along the second direction on the electrode printing unit is provided with the second edge portion. The second edge portion is recessed into the outer surface of the gravure printing plate. The first direction is defined as either the direction parallel to the generatrix of the cylindrical surface of the gravure printing plate or the direction extending along the guideline of the cylindrical surface of the gravure printing plate, and the other is defined as the second direction.

9. An impression cylinder, characterized in that: The outer surface of the impression cylinder is provided with a gravure printing plate as described in any one of claims 1 to 8.

10. A gravure printing machine, characterized in that: Includes the impression cylinder as described in claim 9.

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