CN108495752B - Ink-jet printing device and printing method - Google Patents
Ink-jet printing device and printing method Download PDFInfo
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- CN108495752B CN108495752B CN201680066002.8A CN201680066002A CN108495752B CN 108495752 B CN108495752 B CN 108495752B CN 201680066002 A CN201680066002 A CN 201680066002A CN 108495752 B CN108495752 B CN 108495752B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
- B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
- B41J3/40733—Printing on cylindrical or rotationally symmetrical objects, e. g. on bottles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
- B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
- B41J3/40731—Holders for objects, e. g. holders specially adapted to the shape of the object to be printed or adapted to hold several objects
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- Manufacturing & Machinery (AREA)
- Ink Jet (AREA)
Abstract
The invention discloses an ink-jet printing device and a printing method for printing a cone or a cylinder. The printing device comprises a printing trolley (6), wherein a fixing device (2) is arranged below the printing trolley and used for fixing and clamping an object to be printed (9), and a parallelism adjusting device (3) is arranged at the lower end of the fixing device and used for adjusting the parallelism between the upper end printing surface of the object to be printed and a printing head (C, M, Y, K); in the printing process, the control system controls the printing trolley to move in a one-way stepping mode along the horizontal direction, controls the object to be printed to rotate around the central axis (X) of the printing trolley, and controls the printing head to eject ink quantity corresponding to different concentration change proportions according to the change of the overall dimension of the object to be printed. The ink-jet printing device and the printing method are applied to printing of the to-be-printed objects which are cones with different tapers or cylinders with different diameters, and patterns or characters with the same ink-jet quality are printed on the side walls with different tapers.
Description
Technical Field
The present invention relates to an ink-jet printing apparatus and a printing method, and more particularly, to an ink-jet printing apparatus for printing a conical or cylindrical object to be printed and a printing method thereof.
Background
The traditional printing modes of cones (such as cone-shaped opening cups) or cylinders are generally more in the modes of silk screen printing or trademark pasting, the process flows of silk screen printing for typesetting, plate making and repeated chromatography are more complicated, the printing cost of small-batch multi-color personalized plate making can be greatly increased, and the processes of plate making, chromatography and the like need to be carried out again every time one plate pattern is replaced, so that the personalized printing market is not facilitated. The most important advantage of the ink-jet printing technology is that the printed graphic information can be flexibly changed. The ink-jet printing does not need plate making, has no limit of printing amount, saves all prepress preparation processes of the traditional printing, only needs to input the required image-text information during printing, and can print the required image-text on the object to be printed by using one computer for operation.
The cup has two types of a cylinder and a cone, and when the cylindrical cup is printed, the invention patent 201410769416.X proposes an ink jet printing device suitable for a cylindrical printing object, which comprises a printing part, a feeding part and a control system, wherein the feeding part is used for installing and driving the printing object; the printing part is used for installing and driving the printing trolley; at least one printing head is arranged on the printing trolley, and the straight line of a nozzle of the printing head on the printing trolley is parallel to the supporting beam (the first shaft); the printing trolley is arranged above the rotating central shaft of the object to be printed; the control system controls the printing trolley to do unidirectional stepping motion along the supporting beam and controls the printing object to do rotary motion around the self rotary central shaft. The feeding part arranged in the printing technology fixes and compresses a cylindrical object to be printed, but when the object to be printed is in a conical opening, how to clamp the cone needs to be considered, so that the cone can keep stable rotation in the printing process; meanwhile, as the side wall of the cone has conicity, a device is designed to adjust the upper end surface of the outer wall which is being printed to be parallel to the printing head; and because the cone shape of the object to be printed, such as a cup, the diameter of the outer surface of the object to be printed is reduced from the cup mouth to the cup bottom, if the original ink discharging mode of printing a cylinder or a plane medium is adopted, the actually printed image is deformed, the deformed size is different along with the difference of the positions of the images, the size of the part closer to the cup bottom is smaller, in order to ensure the normal visual effect of the printed pattern, the characteristic of conical surface shrinkage of the cone is calculated in the software algorithm, and the concentration of the ejected ink is controlled and changed in real time according to the calculation result, so that the normal high-quality image-text effect is ensured.
Disclosure of Invention
The invention aims to overcome the limitations in the prior art and provides an ink-jet printing device and an ink-jet printing method which have high printing speed and high printing quality and are suitable for printing images or characters on the outer circumferential surface of conical objects with different shapes and tapers.
The technical problem of the invention is solved by the following technical scheme: an ink-jet printing device is provided, which comprises a printing trolley and a control system, at least one printing head is arranged on the printing trolley, and is characterized in that,
a) the fixing device is arranged below the printing trolley and used for fixing and clamping an object to be printed and driving the object to be printed to rotate around the axis of the fixing device, the fixing device comprises a moving part, an installation part and a driving part, the installation part is used for installing the object to be printed, the moving part is arranged on one side of the installation part and can move relative to the installation part, the object to be printed is pressed by being close to or far away from the installation part, one end of the driving part is connected with the installation part, the other end of the driving part is connected with a driving motor, and the driving part drives the object to be printed to rotate around the central axis of;
b) the lower end of the fixing device is provided with an adjusting device, and the adjusting device can drive the object to be printed to rotate in a first direction (A direction) so as to adjust the parallelism of the upper end printing surface of the object to be printed and a straight line where a nozzle of a printing head is located;
c) and arranging a curing device at the lower end of the object to be printed, wherein the curing device is used for drying the ink drops sprayed to the object to be printed.
In the above inkjet printing apparatus, the fixing device is a cone or cylinder fixing device, and the object to be printed is a cone or cylinder.
In the above inkjet printing apparatus, a lifting device is further included, and the fixing device and the adjusting device are mounted on the lifting device, and the lifting device is configured to drive the object to be printed to move up or down in the vertical direction, so as to ensure that the distance between the object to be printed and the printing head is an appropriate printing distance (typically 1-3 mm).
In foretell inkjet printing device, fixing device's installation department includes first spacing round, the spacing round of second and adjusting lever, and first spacing round and the spacing round of second have the annular disc of through-hole for the center, and the central through-hole of first spacing round and the spacing round of second penetrates the adjusting lever to be connected with the adjusting lever through solid fixed ring, and first spacing round and the spacing round of second can be followed the adjusting lever and removed or lock to the adjusting lever on.
In the inkjet printing device, the diameter of the first limiting wheel is different from that of the second limiting wheel, the clamping wheel is arranged on the other side of the limiting wheel with the large diameter, the clamping wheel is an annular disc with a through hole in the center, and a sealing ring is arranged at the outer end of the clamping wheel and used for improving the installation stability of an object to be printed.
In the above inkjet printing apparatus, the object to be printed is mounted between the moving part and the driving part, one end of the object to be printed is sleeved on the driving part, and the other end of the object to be printed abuts against the moving part.
In foretell inkjet printing device, fixing device connects adjusting device through the bottom plate in the below, and adjusting device includes the lead screw, the fixed plate, the regulating arm, head rod and second connecting rod, and the lead screw passes through the screw and is connected with the fixed plate, and the both sides face of fixed plate passes through two center pins and links to each other with two regulating arms, and the head rod is connected to two regulating arm upper ends, and head rod and second connecting rod are connected respectively to bottom plate below both sides, through rotatory lead screw, drive regulating arm and fixed plate contained angle change to it uses the second connecting rod to be the rotary motion as the axle (being A direction) to drive the bottom plate.
The printing method of the ink-jet printing device is characterized by comprising the steps of clamping an object to be printed on the fixing device, adjusting the printing surface at the upper end of the object to be printed to be parallel to the straight line where the printing head is located through the adjusting device, controlling the printing trolley to move in a one-way stepping mode along the horizontal direction, controlling the object to be printed to rotate around the central axis of the printing trolley, and controlling the spray head to spray ink with different concentration change ratios according to the change of the overall dimension of the object to be printed.
In the above ink-jet printing method, the object to be printed is an object with a cone shape, and the side wall of the object to be printed is spread into a fan shape, such as a cup.
In the above ink-jet printing method, the object to be printed is an object with a cylindrical shape, and the side wall of the object to be printed is unfolded into a rectangle.
In the ink-jet printing method, the control of the nozzle to spray the ink amount corresponding to different concentration change proportions according to the change of the overall dimension of the object to be printed is realized through software algorithm programming calculation, and the sprayed ink amount can be reduced from the cup opening to the cup bottom.
In the above inkjet printing method, the ink concentration change ratio (scanning printing position diameter D/cup mouth diameter D1) (X + scanning printing position to cup bottom distance D)/(X + cup vertical height H), where the distance X from the cup bottom to the point P (point P is the intersection of the extension lines of the conical sidewalls), the cup vertical height H, and the scanning printing position to the cup bottom distance D are known parameters, and the required ink concentration change ratio value can be calculated by substituting the known parameters into a formula, and the value is used to dynamically control the concentration of the ink ejected from the printing head in real time, so as to ensure the inkjet effect on the conical sidewalls.
In an inkjet printing method of an inkjet printing apparatus, a specific printing step includes:
a) placing an object to be printed on the cone fixing device;
b) clamping and fastening an object to be printed;
c) adjusting the parallelism of the upper end printing surface of the object to be printed to enable the object to be printed to be parallel to the printing head of the printing trolley, and simultaneously matching with the lifting device to drive the object to be printed to keep a proper distance with the printing trolley;
d) the printing head makes unidirectional stepping motion along the X-axis direction;
e) the object to be printed rotates, and the printing head is controlled to spray ink with different concentration changes to the object to be printed which rotates continuously according to the shape change of the object to be printed;
f) the software judges whether the image on the object to be printed is printed;
g) and after printing is finished, the lifting device descends to the lowest position, the object to be printed is taken down, and the printing trolley returns to the initial position.
In the above inkjet printing method, the print head includes cyan C, magenta M, yellow Y, black K, and may further include white W, a primer P, or a transparent color V.
The invention can print not only a cylinder, but also a cone, the object to be printed is clamped and fixed by the fixing device, the outer circumferential surface of the side wall to be printed at the upper end of the cone is kept parallel to the nozzle of the printing head by the parallelism adjusting device, the rotating smoothness is kept in the process of the autorotation of the cone driven by the motor during printing, and simultaneously, the nozzle is controlled by a software algorithm to eject ink amount corresponding to different concentration change proportions according to the change of the outline taper size of the object to be printed, thereby ensuring that patterns or characters with the same spray painting quality are printed at the side walls with different tapers. And the printing device can be applied to the printing operation of the cones to be printed with different tapers through the fixing device, the parallelism adjusting device and the software algorithm control.
Drawings
FIG. 1 is a schematic perspective view of a printing apparatus according to an embodiment of the present invention;
FIG. 2 is a front view of the printing apparatus of FIG. 1;
FIG. 3 is a perspective view of a cone fixture and parallelism adjustment apparatus according to an embodiment of the invention;
FIG. 4 is a schematic perspective view of the object to be printed hidden in FIG. 3 at another angle;
FIG. 5 is a right side view of the cone attachment means and parallelism adjustment means of FIG. 3;
FIG. 6 is a perspective view of the pinch wheel in the cone fixture;
FIG. 7 is a left side view of the pinch wheel of FIG. 6;
FIG. 8 is a perspective view of an object to be printed;
FIG. 9 is a schematic diagram of the software for calculating the ink density reduction ratio of the ink ejected from the nozzle according to the conical state of the side wall of the object to be printed;
FIG. 10 is a flow chart illustrating the printing process of an ink jet printing apparatus according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of a simulation of the inkjet printing apparatus according to the present invention after the printing by the first nozzle C is finished;
FIG. 12 is a schematic diagram of a simulation showing the first two nozzles C, M of the inkjet printing apparatus according to the present invention after printing is finished;
FIG. 13 is a schematic diagram of a simulation of the inkjet printing apparatus according to the present invention after the printing of the last nozzle is completed;
FIG. 14 is a schematic diagram of a simulation of the present invention when printing a cylindrical object to be printed;
FIG. 15 is a schematic view of a printing method of another embodiment of the inkjet printing apparatus according to the present invention.
Detailed Description
An inkjet printing apparatus and an inkjet printing method according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1-2, the inkjet printing apparatus in this embodiment includes a printing unit and a feeding unit, the printing unit includes a rail beam portion 1 and a printing trolley 6, the rail beam portion 1 is provided with the printing trolley 6, the printing trolley 6 can move relatively along the rail beam, the printing trolley 1 is provided with at least one printing head, and the printing trolley 6 is used for ejecting ink droplets onto an object to be printed 9 to realize image or text printing. The feeding unit comprises a base part 4, a cone fixing device 2 and a parallelism adjusting device 3, the feeding unit is arranged below the printing unit, the cone fixing device 2 and the parallelism adjusting device 3 are arranged on the base part 4, the distance between the cone fixing device 2 and the printing unit in the vertical direction can be adjusted, the cone fixing device 2 is used for placing and clamping an object 9 to be printed, the object 9 to be printed is a hollow cone, the parallelism between the upper end of the outer wall of the object to be printed 9 and a printing head (not shown in the figure) in the printing trolley 6 can be adjusted by the parallelism adjusting device 3, the lower end of the parallelism adjusting device 3 is also connected with a lifting device (not shown in the figure) arranged on the base part, and the lifting device is controlled by software to drive the whole cone fixing device 2 and the parallelism adjusting device 3 to descend or ascend to a height suitable for printing from the printing head in the vertical direction. Before ink jet printing, the cone fixing device 2 and the parallelism adjusting device 3 are adjusted to the proper printing position of the object to be printed 9; in the ink-jet printing process, the printing trolley 6 moves in a stepping mode along the X-axis direction, the object 9 to be printed rotates around the central axis of the printing trolley, and the printing head sprays pictures and texts on the object 9 to be printed. Further, the inkjet printing apparatus includes a wiping maintenance portion 5 for wiping and moisturizing the print head.
As shown in fig. 3-5, the cone fixing device 2 of the present invention includes a clamping wheel 23, a first limiting wheel 24, a second limiting wheel 25, an adjusting rod 26, an a fixing seat 22, a B fixing seat 27, a C fixing seat 28, a sliding block 29 and a linear sliding rail 30, wherein one side of the a fixing seat 22 is connected to a stepping motor 21 through a motor seat 211, a through hole is formed at the upper end of the a fixing seat 22, the adjusting rod 26 passes through the through hole, one end of the adjusting rod 26 is connected to the stepping motor 21 through a coupler 212, the stepping motor 21 provides power to rotate the adjusting rod 26 together with the adjusting rod to transmit torque, the clamping wheel 23, the first limiting wheel 24 and the second limiting wheel 25 are sequentially arranged at the other end of the adjusting rod 26, the first limiting wheel 24 and the second limiting wheel 25 are annular discs made of ultra-high molecular polyethylene, the diameter of the first limiting wheel 24 is larger than that of the second limiting wheel 25, the first limiting wheel 24 and the second limiting wheel 25 are mounted on the adjusting rod 26 through a fixing ring 251, the first limiting wheel 24 and the second limiting wheel 25 can move along the adjusting rod 26, and after the positions are fixed, the positions are fixed by using a jackscrew (not shown in the figure) arranged on the fixing ring 251. The clamping wheel 23 is located near the end of the stepping motor 21, the clamping wheel 23 is an aluminum alloy annular disc, as shown in fig. 6-7, a groove 231 is arranged at the outer end of the clamping wheel 23, a sealing ring is installed in the groove 231, the diameter after the sealing ring is installed is slightly larger than that of the first limiting wheel 24, and as a circle of sealing ring is installed outside the clamping wheel 23, friction is increased when a bottle is clamped, and the clamping is stable. The B fixing seat 27 is arranged beside the tail end (in the cup bottom direction) of the adjusting rod 26, a through hole is formed in the center of the upper end of the B fixing seat 27 for installing a second adjusting rod 272, a rubber top head 271 is installed at the tail end, close to the adjusting rod 26, of the second adjusting rod 272, the bottom end of the B fixing seat 27 is connected with the C fixing seat 28, two sliding blocks 29 are respectively connected to the bottom of the C fixing seat 28, the lower portion of each sliding block 29 is matched with the linear sliding rail 30, each sliding block 29 can slide on the linear sliding rail 30 along the X axial direction, the second adjusting rod 272 connected with the B fixing seat 27 is driven to slide along the X axial direction through the sliding of the sliding blocks 29 on the linear sliding rails 30, and finally the rubber top head 271 at the tail end of the. The second adjusting rod 272 can be moved manually, or an air cylinder can be installed again, and the control system can control the air cylinder to push the second adjusting rod to realize automatic pressing operation.
The object 9 to be printed is mounted in a conical shape, and is hollow with one side open, such as a conical cup. As shown in fig. 8, the side wall 91 of the object 9 to be printed has a contour of a cone, during installation, the B fixing seat 27 is manually moved to a side away from the adjusting rod 26, the open end 92 of the object 9 to be printed is inserted into the adjusting rod 26, and the positions of the first limiting wheel 24 and the second limiting wheel 25 on the adjusting rod 26 are moved according to the inner wall taper of the object 9 to be printed while inserting, so that the first limiting wheel 24 and the second limiting wheel 25 are just clamped at the corresponding diameter positions of the inner wall of the object 9 to be printed, that is, the first limiting wheel 24 and the second limiting wheel 25 are in close contact with the inner wall of the object 9 to be printed and are mutually clamped in a stressed state, and the first limiting wheel 24 and the second limiting wheel 25 are fixed by a jackscrew on the fixing ring 251. After that, the clamping wheel 23 is moved to a position close to the bottleneck end 92 to tightly clamp the inner wall of the object 9 to be printed, and because a circle of sealing ring is installed in the groove 231 of the clamping wheel 23, the friction force between the clamping wheel and the object 9 to be printed can be increased, so that the object 9 to be printed is ensured to be stable around the rotation (as shown in fig. 5) of the B under the driving of the stepping motor 21 in the printing process, namely, the vertical movement amount of the upper surface of the side wall 91 is controlled in a range without affecting the printing effect in the rotating process. After the positions of the clamping wheel 23, the first limiting wheel 24 and the second limiting wheel 25 are properly adjusted, the B fixing seat 27 is moved towards the direction close to the object 9 to be printed, and the rubber top 271 arranged at the tail end of the second adjusting rod 272 is made to be closely leaned against the center of the bottom 93 of the object 9 to be printed, so that the object 9 to be printed is fixed.
It should be noted that the device can be used for objects to be printed with different tapers or diameters than the present embodiment, such as cups with different tapers, and cylindrical open bottles with different diameters. As long as the diameter variation range of the inner wall of the object to be printed covers the diameters of the first limiting wheel 24 and the second limiting wheel 25, the clamping can be adjusted through the movement of the first limiting wheel 24 and the second limiting wheel 25 on the adjusting rod 26. In addition, the device can also be suitable for the printing operation of a special shape with unchanged taper, namely a cylinder, and one of the first limiting wheel 24, the second limiting wheel 25 or the clamping wheel 23 is used for clamping, so that the rubber top 271 arranged at the tail end of the second adjusting rod 272 is abutted against the center of the bottom of the cylinder mainly through the approach of the B fixing seat 27 to the bottom of the cylinder, and the installation and the fixation are carried out. Of course, for a solid object to be printed, whether a cone or a cylinder, the solid object to be printed can also be fixed in a manner of tightening the two ends, the center of one end face of the object to be printed is also moved through the B fixing seat 27 to enable the rubber plug 271 to be abutted, and the center of the other end face of the object to be printed is abutted and tightened by a plug connected with the motor 21 and similar to the structure of the rubber plug 271 arranged at the tail end of the second adjusting rod 272, so that the size of the outer diameter of the solid cone or the cone is not limited.
The parallelism adjusting device 3 is positioned below the cone fixing device 2, the parallelism adjusting device 3 comprises a rotating handle 31, a screw rod 310, a nut (not shown in the figure), a central shaft 32, an adjusting arm 33, a first connecting rod 34, a bottom plate 35, a fixed bottom plate 36, a second connecting rod 37, a connecting seat vertical bearing 38 and an aluminum profile bracket 39, the rotating handle 31 is connected with the screw rod 310, two ball bearings 311 and a bearing seat 312 are arranged on the screw rod 310, the other end of the screw rod 310 is connected with the nut (not shown in the figure), the upper end of the nut is connected with a fixed plate 324, two sides of the bottom surface of the fixed plate 324 are respectively connected with a slide block 323, linear slide rails 322 are respectively arranged below the slide blocks 323 to be matched with the slide blocks, and the fixed plate 324 can slide in the X-axis direction; two side surfaces of the fixing plate 324 respectively penetrate through a central shaft 32, the central shaft 32 is connected with the adjusting arms 33 through ball bearings 321, the upper ends of the two adjusting arms 33 are provided with first connecting rods 34, the first connecting rods 34 are connected with one side below the bottom plate 35, the other side below the bottom plate 35 is connected with second connecting rods 37 through fixing seats (not shown in the figure), two end parts of the second connecting rods 37 penetrate through the connecting seat vertical bearings 38 and are connected to a fixing bottom plate 36, and the fixing bottom plate 36 is connected with a lower aluminum profile bracket 39, so that the whole parallelism adjusting device 3 is connected to the aluminum profile bracket 39.
When the rotating handle 31 is rotated clockwise to the right, the rotating handle 31 drives the screw rod 310 to rotate clockwise, and the nut matched with the screw rod 310 rotates in the opposite direction, i.e. moves away from the second connecting rod 37, so as to drive the fixing plate 324 connected with the nut to move away from the second connecting rod 37, and meanwhile, the slider 323 connected with the fixing plate 324 moves on the linear slide rail 322 in the direction away from the second connecting rod 37; the movement of the fixing plate 324 rotates the central shaft 32 connected thereto and drives the adjusting arm 33 to increase the included angle with the central shaft 32 (i.e., the O-axis in fig. 5), so as to drive the bottom plate 35 connected to the first connecting rod 34 to rotate clockwise (i.e., the end of the first connecting rod 34 of the bottom plate 35 rises along the Z-axis) about the second connecting rod 37 (i.e., the P-axis in fig. 5), as indicated by the arrow a in fig. 5, and finally the bottom plate 35 assumes a certain inclination angle. Because the object 9 to be printed is a cone, and the side wall has a certain taper, adjusting the rotating handle 31 can keep the side wall of the upper end of the object 9 to be printed parallel to the X axis, i.e. parallel to the distance from the print head, and the state shown in fig. 5 is the position where the side wall of the upper end is parallel to the print head/X axis in the rotating process of the object 9 to be printed.
When the rotating handle 31 is rotated in a left and counterclockwise direction, the rotating handle 31 drives the screw rod 310 to rotate counterclockwise, and the nut matched with the screw rod 310 rotates in a reverse direction, i.e. moves in a direction close to the second connecting rod 37, so as to drive the fixing plate 324 connected with the nut to move in a direction close to the second connecting rod 37, and meanwhile, the slider 323 connected with the fixing plate 324 moves on the linear slide rail 322 in a direction close to the second connecting rod 37; the movement of the fixing plate 324 rotates the central shaft 32 connected thereto and drives the adjusting arm 33 to decrease the included angle with the central shaft 32 (i.e., the O-axis in fig. 5), so as to drive the bottom plate 35 connected to the first connecting rod 34 to rotate counterclockwise (i.e., the end of the first connecting rod 34 of the bottom plate 35 descends along the Z-axis) about the second connecting rod 37 (i.e., the P-axis in fig. 5), thereby making the bottom plate 35 present a certain inclination angle. Because the object 9 to be printed is a cone, the side wall has a certain taper, the side wall of the upper end of the object 9 to be printed can be always kept parallel to the X axis by adjusting the rotating handle 31, and when the adjustment amount is overlarge, the rotating handle 31 is adjusted in the opposite direction to ensure the parallel of the distance between the rotating handle 31 and the printing head.
It should be noted that the rotating handle 31 may be replaced by a motor drive, that is, a motor is connected to the screw rod 310, so as to automatically control and adjust the parallelism.
Except printing the conical body, treat that the printing object also can be the cylinder, use fixing device 2 to fix the chucking to it equally when the installation cylinder, do not need depth of parallelism adjusting device 3 the regulation can.
The method of printing the lower conical object is described in detail below with reference to fig. 9-14: firstly, the software for printing the conical object is special when writing, because the object to be printed is conical, such as a cup, the diameter of the outer surface of the object to be printed is reduced from the cup mouth to the cup bottom, if the original inking mode for printing the cylindrical or printing plane medium is adopted, the actually printed image is deformed, the deformed size is different along with the position of the image, and the size of the part closer to the cup bottom is smaller. In order to ensure the normal visual effect of the printed pattern, the software algorithm/RIP needs to consider the cone surface shrinkage characteristic for calculation, and the concentration of the ejected ink is controlled and changed according to the calculation result. The ink concentration is specifically calculated as follows:
1. first, let the diameter of the cup mouth be D1, the diameter of the cup bottom be D2, the vertical height of the cup be H, the extension line of the conical sidewall intersect at point P, the distance from the cup bottom to point P be X, the scanning and printing position be circumference L, the diameter at the scanning and printing position be D, and the distance from the scanning and printing position to the cup bottom be D, as shown in fig. 9.
2. Calculating the distance X from the cup bottom to the point P: according to the triangle similarity principle, the cup mouth diameter D1/cup bottom diameter D2 is (X + cup vertical height H)/X, so that X is H/(D1/D2-1).
3. And calculating the diameter D at the scanning and printing position, namely, according to the triangle similarity principle, the cup mouth diameter D1/scanning and printing position diameter D is (X + cup vertical height H)/(X + scanning and printing position-to-cup bottom distance D), so that D is D1 × (X + D)/(X + H).
4. The ink density change ratio required at the scanning print position L, i.e., scanning print position diameter D/cup mouth diameter D1, (X + scanning print position-to-cup bottom distance D)/(X + cup vertical height H), is calculated.
5. The distance X from the cup bottom to the point P, the vertical height H of the cup and the distance d from the scanning printing position to the cup bottom in the formula are known parameters, the required ink concentration change proportion value can be calculated by substituting the known parameters into the formula, and the ink concentration sprayed out by the printing nozzle can be dynamically controlled in real time by utilizing the value to ensure the spray painting effect on the surface of the conical body.
The process of ink-jet printing is shown in the flow chart 10, before ink-jet printing, the object 9 to be printed is placed on the cone fixing device 2, and then the object 9 to be printed is clamped and fastened: the open end of an object to be printed 9 is inserted into an adjusting rod 26 of the cone fixing device 2, the first limiting wheel 24 and the second limiting wheel 25 are moved to be clamped on the corresponding diameter position of the inner wall of the object to be printed 9 according to the inner wall taper of the object to be printed 9 while the object to be printed is inserted, so that the object to be printed 9 is in close contact with each other and is in a mutually clamped stress state, then the clamping wheel 23 is moved into a bottleneck to clamp the inner wall of the object to be printed 9 tightly, finally the B fixing seat 27 is moved towards the direction close to the object to be printed 9, and the rubber top 271 is abutted against the bottom of the object to be printed 9, so that the object to be printed 9 is guaranteed to rotate around the B (as shown in figure 5) under the driving of the stepping. The parallelism of the side walls of the upper end of the object 9 to be printed is then adjusted by the parallelism adjusting device 3, so that the side walls of the upper end of the object 9 to be printed remain parallel to the distance of the print head of the print carriage, i.e. parallel to the X-axis. Simultaneously, the object 9 to be printed is driven to move upwards along the vertical direction through the cooperation of the lifting device, so that the distance between the plane where the printing head is located on the printing trolley 6 and the surface to be printed of the object 9 to be printed is the most appropriate distance (usually 1-3mm) to be printed, and the most appropriate distance to be printed is determined according to the material of the object to be printed selected by a user and the performance of printing ink.
In the ink-jet printing process, the printing head makes unidirectional stepping motion along the direction of an arrow of an X axis, simultaneously, the object to be printed 9 rotates around a central axis of the printing head, the printing head ejects ink drops to the object to be printed 9 which continuously rotates, the ink-jet amount is controlled according to the calculated ink concentration change proportion, and the software judges whether the image on the object to be printed 9 is printed or not: if not, continuing the unidirectional stepping motion of the printing head along the arrow direction of the X axis, the rotation of the object to be printed 9 and the ink jetting of the printing head; if so, the stepping movement of the print head is stopped, the rotation of the object to be printed 9 is stopped, and the ejection of ink by the print head is stopped. Taking two-pass printing as an example, when the ink-jet printing is started, the first half of nozzles of the first printing head C enter the printing area, the control system controls the first half of nozzles of the printing head to jet ink droplets on the rotating object 9 to be printed, after the object 9 to be printed rotates for one circle, the first pass printing is finished, and the second half of nozzles of the printing head C, the second printing head M, the third printing head Y and the fourth printing head K do not jet ink in the first pass printing process. The printing head steps by half along the X-axis direction, at the moment, all nozzles of the first printing head C enter a printing area, the control system controls the nozzles of the first printing head C to spray ink drops on the rotating object to be printed 9, after the object to be printed 9 rotates for a circle, the second pass printing is finished, and the second printing head M, the third printing head Y and the fourth printing head K do not spray ink in the second pass printing process. The printing head continues to step by half along the X-axis direction, the steps are repeated, when the eighth pass is printed, all nozzles of the printing head enter a printing area, the control system controls the printing trolley 6 to perform stepping motion along the direction shown by the X-axis, the stepping motor 21 is controlled to drive the object to be printed 9 to continuously rotate around the rotating central shaft of the object to be printed, meanwhile, the printing head on the printing trolley 6 is controlled to spray ink drops on the rotating object to be printed 9, the object to be printed 9 rotates for a circle, the control system controls the trolley 6 to step by half along the direction shown by the X-axis, the printing trolley 6 stops after stepping, the control system controls the printing head on the printing trolley 6 to spray ink drops on the rotating object to be printed 9, and in the whole printing process, the control system controls the printing trolley 6 to perform stepping motion along the X-axis and controls the object to be. Starting from the seventh last pass, the printing head starts to be far away from the printing area on the object to be printed 9, at the last pass of ink jet printing, the first printing head C, the second printing head M and the third printing head Y on the printing trolley 6 completely leave the printing area, the first half nozzle of the fourth printing head K also leaves the printing area, the second half nozzle of the printing head K is still in the printing area, and the control system controls the second half nozzle of the printing head K to jet ink drops on the object to be printed 9 to finish the printing of the last pass, so that the image printing is finished.
After the ink-jet printing is finished, the control system controls the lifting device to drive the printed object to be printed 9 to descend to the lowest position along the vertical direction, an operator takes down the printed object to be printed 9, places a new object to be printed 9 which is not printed on the cone fixing device 2, and readjusts the object to be printed to perform the printing operation of the next object to be printed.
Fig. 11-13 are schematic views of another embodiment of the process of printing images and text on an object to be printed in a cone shape using the ink jet printing apparatus of the present invention, which is a print carriage that is stepped one nozzle-printing width distance at a time in the X-axis direction. When the ink-jet printing is carried out, the printing trolley does one-way stepping motion along the X-axis, and when the printing head C completely enters a printing area, the printing trolley stops moving and keeps a static state; the driving mechanism drives the object to be printed to continuously rotate. When the sensing device senses the mark on the object to be printed, the control system controls the printing head C on the printing trolley to eject cyan ink on the rotating object to be printed, and the printing head M, the printing head Y and the printing head K do not work, as shown in fig. 11. In the ink-jet printing method, the moment when the sensing device detects the marking mark on the object to be printed is the moment when the printing is started, the position where the ink drop is formed on the object to be printed is the starting position of the printing, and the ending position of the printing is determined by the printing image to be printed. As can be seen from the side wall development of fig. 11: the ink jet printing method of the invention has the advantages that the area for jetting the ink in the interval of the printing starting position and the printing ending position on the object to be printed is in a fan shape, namely the jetting concentration of the printing ink close to the bottle opening is greater than that of the printing ink close to the bottle bottom, and the specific jetting amount concentration change is obtained by calculation according to the software. In addition, all nozzles of the printing head work, the utilization rate of the nozzles is high, the printing efficiency is high, and the nozzles of the printing head can be effectively prevented from being blocked due to long-time non-work.
After the first printing, the printing trolley steps by a nozzle in the X-axis direction for printing the width distance, at the moment, the printing head C and the printing head M completely enter a printing area, the printing trolley stops moving and keeps a static state, the driving mechanism drives the object to be printed to continuously rotate, when the sensing device senses the mark on the object to be printed, the control system controls the printing head C and the printing head M on the printing trolley to respectively spray cyan ink and magenta ink on the rotating object to be printed, and the printing head Y and the printing head K do not work, as shown in FIG. 12. At the moment, the printing head C prints cyan ink drops required according to a printing image in an unprinted area of the object to be printed, the printing head M superposes magenta ink drops required according to the printing image in the printed area printed by the printing head C during the first printing, and similarly, the area for jetting ink in the interval between the printing starting position and the printing ending position on the object to be printed is in a fan shape, namely the jetting concentration of the printing ink close to the bottle opening is greater than that of the printing ink close to the bottle bottom, and the specific ink jetting amount concentration change is obtained through calculation according to the software.
Print the dolly after the printing of second pass and print width distance along X axial step-by-step shower nozzle, print printer head C this moment, print printer head M and print printer head Y and get into the printing area completely, print the dolly stop motion and keep quiescent condition, actuating mechanism drives and waits to print the object and continuously rotate, control system control print printer head C on the dolly when sensing the mark that waits to print on the object, print printer head M and print printer head Y and spout cyan ink, magenta ink and yellow ink respectively on the object is waited to print in the rotation, it does not work to print printer head K. At the moment, the printing head C prints cyan ink drops required by printing images on an unprinted area of an object to be printed, the printing head M superposes magenta ink drops required by printing images on the printed area of the printing head C during the first printing, the printing head Y superposes yellow ink drops required by printing images on the printed area of the printing head C and the printing head M during the second printing, and the area for jetting ink in the interval between the printing starting position and the printing ending position on the object to be printed is also in a fan shape, namely the jet concentration of the printing ink close to the bottle mouth position is greater than that of the printing ink close to the bottle bottom position, and the specific jet amount concentration change is obtained by calculation according to the software.
And after the third printing, the printing trolley steps by a nozzle printing width distance along the X axial direction, at the moment, the printing head C, the printing head M, the printing head Y and the printing head K completely enter a printing area, the printing trolley stops moving and keeps a static state, the driving mechanism drives the object to be printed to continuously rotate, and the control system controls the printing head C, the printing head M, the printing head Y and the printing head K on the printing trolley to respectively spray cyan ink, magenta ink, yellow ink and black ink on the rotating object to be printed when the sensing device senses the identification mark on the object to be printed. At the moment, the printing head C prints cyan ink drops required by printing an image on an unprinted area of the object to be printed, the printing head M superposes magenta ink drops required by printing the image on a printed area printed by the printing head C during the first printing, the printing head Y superposes yellow ink drops required by printing the image on an area printed by the printing head C and the printing head M during the second printing, the printing head K superposes black ink drops required by printing the image on an area printed by the printing head C, the printing head M and the printing head Y during the third printing, and the area for jetting ink in a range of the printing starting position and the printing ending position on the object to be printed is in a fan shape, namely the jet concentration of printing ink close to the bottle mouth position is greater than that of printing ink close to the bottle bottom position.
After the fourth printing, the printing trolley steps by a nozzle printing width distance along the X axis, the printing trolley is in a static state in the printing process, the driving mechanism drives the object to be printed to rotate continuously, and the control system controls the printing head C, M, Y, K on the printing trolley to jet ink drops on the rotating object to be printed simultaneously when the sensing device senses the identification mark on the object to be printed; after the fifth ink-jet printing is finished, the printing trolley steps by one nozzle printing width distance along the X axis, and when the sensing device senses the identification mark on the object to be printed, the control system controls the printing head C, M, Y, K on the printing trolley to simultaneously spray ink drops on the rotating object to be printed, and the steps are repeated until the penultimate ink-jet printing is finished. After the fourth last ink-jet printing is finished, the printing trolley steps by one nozzle in the X axial direction for printing the width distance, at the moment, the printing head C leaves the printing area, the printing head M, the printing head Y and the printing head K are still in the printing area, when the sensing device senses the identification mark on the object to be printed, the control system controls the printing head M, Y, K on the printing trolley to simultaneously jet ink drops on the rotating object to be printed, and the printing head C does not jet ink. After the third last printing, the printing trolley steps by a nozzle printing width distance along the X axis, the printing head C and the printing head M leave a printing area at the moment, when the sensing device senses the identification mark on the object to be printed, the control system controls the printing head Y and the printing head K on the printing trolley to simultaneously jet ink drops on the rotating object to be printed, and the printing head C and the printing head M do not jet ink. After the penultimate printing is finished, the printing trolley steps by one nozzle along the X axis for printing the width distance, at the moment, the printing head C, the printing head M and the printing head Y leave a printing area, when the sensing device senses the mark on the object to be printed, the control system controls the printing head K on the printing trolley to jet ink drops on the rotating object to be printed, as shown in fig. 13, the area for jetting ink in the interval of the printing starting position and the printing ending position on the object to be printed is in a fan shape, namely, the jet concentration of the printing ink close to the bottle opening position is greater than that of the printing ink close to the bottle bottom position, and the specific jet amount concentration change is obtained by real-time calculation according to the software. After the printing of the penultimate pass (i.e., the last pass) is completed, the printhead C, M, Y, K has moved completely out of the print zone and the ink jet printing is completed.
Of course, besides printing the cone, the software can also process the printing of the cylinder, as shown in fig. 14, when printing the object to be printed on the cylinder, only one special case of the cone shape is that the cup mouth diameter is equal to the cup bottom diameter, i.e. D1 ═ D2, the expanded side view of the cylinder print is rectangular, the printed image and text are also the uniform distribution of the ink droplets, and the printing process is similar to the above description.
The arrangement of the nozzles on the printing trolley is not limited to the arrangement of C, M, Y, K, and can also be used for sequentially arranging a white nozzle W, a cyan nozzle C, a magenta nozzle M, a yellow nozzle Y and a black nozzle K as shown in fig. 15, the arrangement of the nozzles is applied to the situation that before a color image is printed, a layer of white coating ink needs to be printed on the surface of an object to be printed to increase the color vividness, and the printing method and the movement principle are not changed; in addition, the white nozzle can be replaced by a primer ink nozzle P for spraying a layer of viscous ink with strong adhesive force on the surface of an object to be printed before printing the color image so as to improve the adhesive force of the image; similarly, a transparent ink V can be additionally provided for printing a layer of transparent ink on the color image after printing to achieve different application effects such as watermarking, brightening, matte, protective layer and the like.
Any variations according to the embodiments of the present invention may be made without departing from the spirit of the invention and the scope of the claims.
Claims (14)
1. An ink-jet printing device comprises a printing part and a control system, wherein the printing part is used for installing and driving a printing trolley, at least one printing head is arranged on the printing trolley, the control system is used for controlling the work of the printing head and the movement of the printing trolley and an object to be printed,
a) the fixing device is arranged below the printing trolley and used for fixing and clamping an object to be printed and driving the object to be printed to rotate around the axis of the fixing device, the fixing device comprises a moving part, a mounting part and a driving part, the mounting part comprises a first limiting wheel, a second limiting wheel and an adjusting rod, the first limiting wheel and the second limiting wheel are annular disks with through holes in the centers, the diameter of the first limiting wheel is larger than that of the second limiting wheel, the central through holes of the first limiting wheel and the second limiting wheel penetrate through the adjusting rod and are connected with the adjusting rod through fixing rings, the first limiting wheel and the second limiting wheel can move along the adjusting rod or be locked on the adjusting rod, the mounting part is used for mounting the object to be printed, the moving part is arranged on one side of the mounting part and comprises a second adjusting rod, a fixing seat, a sliding block and a sliding rail, a fixing seat is arranged beside the tail end of the adjusting rod, and a second adjusting rod is arranged at the center, the second adjusting rod is adjacent to the adjusting rod, the bottom of the fixing seat is connected with a sliding block, the lower part of the sliding block is matched with the sliding rail, the sliding block slides along the sliding rail to drive the second adjusting rod to slide along the X-axis direction, so that the second adjusting rod is close to or far away from the mounting part to compress an object to be printed, one end of the driving part is connected with the mounting part, the other end of the driving part is connected with a driving motor, and the driving part drives the object to be printed to rotate around a self;
b) the lower end of the fixing device is provided with an adjusting device, and the adjusting device can drive the object to be printed to rotate in a first direction (A direction) so as to adjust the parallelism of the upper end printing surface of the object to be printed and a straight line where a nozzle of a printing head is located;
c) and arranging a curing device at the lower end of the object to be printed, wherein the curing device is used for drying the ink drops sprayed to the object to be printed.
2. Inkjet printing apparatus according to claim 1 wherein the fixture is a cone or cylinder fixture and the object to be printed is a cone or cylinder.
3. Inkjet printing apparatus according to claim 1 further including a lifting device, the fixing means and the adjustment means being mounted on the lifting device, the lifting device being adapted to drive the vertical raising and lowering movement of the object to be printed to ensure that the distance between the object to be printed and the print head is a suitable print distance (typically 1-3 mm).
4. The inkjet printing apparatus of claim 1 wherein the first and second spacing wheels are polyethylene.
5. The inkjet printing apparatus as claimed in claim 4, wherein the diameter of the first position limiting wheel is different from the diameter of the second position limiting wheel, and a clamping wheel is provided on the other side of the position limiting wheel with a larger diameter, the clamping wheel is an annular disk with a through hole in the center, and a sealing ring is mounted at the outer end of the clamping wheel for increasing the mounting stability of the object to be printed.
6. The inkjet printing apparatus of claim 1 wherein the object to be printed is mounted between the moving portion and the driving portion, one end of the object to be printed being fitted over the driving portion and the other end of the object to be printed abutting against the moving portion.
7. The inkjet printing apparatus as claimed in claim 1, wherein the lower portion of the fixing device is connected to the adjusting device through a bottom plate, the adjusting device includes a lead screw, a fixing plate, an adjusting arm, a first connecting rod and a second connecting rod, the lead screw is connected to the fixing plate through a nut, two side surfaces of the fixing plate are connected to the two adjusting arms through two central shafts, the upper ends of the two adjusting arms are connected to the first connecting rod, two sides of the lower portion of the bottom plate are respectively connected to the first connecting rod and the second connecting rod, and the angle between the adjusting arm and the fixing plate is changed by rotating the lead screw, so that the bottom plate is driven to rotate around the second connecting rod (i.e., the direction a).
8. An ink-jet printing method of the ink-jet printing device as claimed in claim 1, comprising clamping the object to be printed on a fixing device, adjusting the upper end of the object to be printed to be parallel to the line of the print head by an adjusting device, controlling the printing carriage to move in a one-way stepping manner along the horizontal direction, controlling the object to be printed to rotate around the central axis of the printing carriage, and controlling the nozzle to dynamically control the amount of ink ejected in real time according to the variation of the external dimension of the object to be printed in different concentration variation ratios,
ink density change ratio = scan printing position diameter D/cup rim diameter D1= (X + scan printing position-to-cup bottom distance D)/(X + cup vertical height H),
wherein X represents the distance from the cup bottom to point P (point P is the point where the extension lines of the conical side walls intersect), H represents the vertical height of the cup, and d represents the distance from the scanning printing position to the cup bottom.
9. The method of inkjet printing according to claim 8 wherein the object to be printed is an object of conical configuration and the side wall of the object to be printed is spread out in a fan shape, such as a cup.
10. The inkjet printing method of claim 8, wherein the object to be printed is an object having a cylindrical shape, and the side wall of the object to be printed is spread out in a rectangular shape.
11. The inkjet printing method of claim 9 wherein controlling the nozzle to eject an amount of ink corresponding to different proportions of density variations based on the dimensional changes of the object to be printed is accomplished by software algorithm programmed calculations, the amount of ejected ink being reduced from the mouth of the cup to the bottom of the cup.
12. The inkjet printing method of claim 9, wherein the specific printing step comprises:
a) placing an object to be printed on the fixing device;
b) clamping and fastening an object to be printed;
c) adjusting the parallelism of the upper end printing surface of the object to be printed to enable the object to be printed to be parallel to the printing head of the printing trolley, and simultaneously matching with the lifting device to drive the object to be printed to keep a proper distance with the printing trolley;
d) the printing head makes unidirectional stepping motion along the X-axis direction;
e) the object to be printed rotates, and the printing head is controlled to spray ink with different concentration changes to the object to be printed which rotates continuously according to the shape change of the object to be printed;
f) the software judges whether the image on the object to be printed is printed;
g) and after printing is finished, the lifting device descends to the lowest position, the object to be printed is taken down, and the printing trolley returns to the initial position.
13. The method of inkjet printing according to claim 8 wherein the printhead comprises cyan C, magenta M, yellow Y, black K, and may further comprise white W, primer P, or transparent V.
14. The method of inkjet printing according to claim 12 wherein step e) the ink is ejected while a curing device at the lower end of the object to be printed performs a drying operation on the ink drops.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2015/100117 WO2017120693A1 (en) | 2016-01-15 | 2016-01-15 | Inkjet printing apparatus and printing method |
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| CN108495752B true CN108495752B (en) | 2020-07-24 |
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| CN111590875A (en) * | 2019-02-21 | 2020-08-28 | 广州卓绝智能科技有限公司 | 3D ink-jet printing machine |
| WO2020248221A1 (en) * | 2019-06-14 | 2020-12-17 | 北京美科艺数码科技发展有限公司 | Ink-jet printer and single-pass ink-jet printing method |
| WO2020248222A1 (en) * | 2019-06-14 | 2020-12-17 | 北京美科艺数码科技发展有限公司 | Inkjet printer and one-pass inkjet printing method thereof |
| CN110450550B (en) * | 2019-08-30 | 2023-12-19 | 北京亚美科软件有限公司 | Inkjet printing apparatus and printing method for inkjet printing apparatus |
| CN111806097A (en) * | 2020-07-21 | 2020-10-23 | 北京美科艺数码科技发展有限公司 | Ink-jet printing device and turnover mode printing method thereof |
| CN111716907B (en) * | 2020-07-27 | 2024-03-15 | 共享智能装备有限公司 | 3D print head and 3D printer |
| US11628529B2 (en) * | 2020-11-04 | 2023-04-18 | Tong Li | Engraving fixture for multiple serially arranged objects |
| CN112373033A (en) * | 2020-12-02 | 2021-02-19 | 上海建工建材科技集团股份有限公司 | 3D printing nozzle with intelligently adjustable outlet size and using method thereof |
| CN114683710B (en) * | 2020-12-25 | 2023-08-15 | 森大（深圳）技术有限公司 | Cylindrical surface printing control method, device, control panel, printer and medium |
| CN115756342A (en) * | 2021-09-02 | 2023-03-07 | 深圳市汉森软件有限公司 | Method, device, equipment and storage medium for eliminating printing color difference |
| CN114055955B (en) * | 2021-10-13 | 2023-05-09 | 惠安先锋机械有限公司 | Marking device is pressed in medicine bottle outside |
| JP2023163859A (en) * | 2022-04-28 | 2023-11-10 | 株式会社ミマキエンジニアリング | printing system |
| CN115384058B (en) * | 2022-08-26 | 2023-07-18 | 江南大学 | Through-flow section adjustable printing head with staggered holes and slots, printing method and machined part |
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| CN108495752A (en) | 2018-09-04 |
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