CN108819493B - Method and equipment for synchronous printing and photocuring - Google Patents
Method and equipment for synchronous printing and photocuring Download PDFInfo
- Publication number
- CN108819493B CN108819493B CN201810555569.2A CN201810555569A CN108819493B CN 108819493 B CN108819493 B CN 108819493B CN 201810555569 A CN201810555569 A CN 201810555569A CN 108819493 B CN108819493 B CN 108819493B
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- printing
- photocuring
- pcb substrate
- light
- ink
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Classifications
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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
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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
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0015—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
- B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
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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
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0045—Guides for printing material
-
- 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
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
- B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
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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
- B41J3/54—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements
- B41J3/543—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements with multiple inkjet print heads
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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
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
- B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
- B41J2029/3937—Wireless communication between the printer and the cartridge, carriage or printhead
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Ink Jet (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The invention relates to a method and equipment for synchronous printing and photocuring, wherein the method comprises a printing step and a photocuring step, and the printing step and the photocuring step are synchronously carried out on the same PCB substrate, and the method is characterized in that the synchronous time of printing and photocuring is 10-90% of the printing time or 10-90% of the photocuring time on the same PCB substrate, the photocuring step is a laser direct imaging step, and a light source used for laser direct imaging is ultraviolet light. The method and the device for synchronously printing and photocuring solve the problem of document timeliness, and line inaccuracy is caused if direct and comprehensive curing is carried out due to printing deviation in the printing process, particularly after the line is enlarged. And the method of synchronizing printing and photocuring can directly carry out line correction.
Description
Technical Field
The invention belongs to the field of circuit board manufacturing, particularly relates to a printing method of ink on a circuit board, and particularly relates to a method and equipment for synchronous printing and photocuring.
Background
The conventional method of manufacturing a circuit board using UV light is to coat the circuit board with ink, cover it with a film negative, cure it with UV light, and wash away the uncured part, leaving the cured part. When the traditional method is used for preparing a very high density (less than or equal to 30 um) circuit board, the alignment degree and the control are insufficient, the processing process is long, a large number of film negative films are needed, and the manufacturing and the maintenance of the film negative films need a lot of auxiliary materials, chemicals, temperature and humidity control facilities and other factors, so that the processing and the manufacturing of the very high density circuit board cannot be met.
With the progress of high integration and assembly (especially chip-level/mu-BGA package) technology of electronic components, the development and progress of electronic products to "light, thin, short, small", high frequency/high speed digitization of signals and high-capacity multifunctionalization are greatly promoted, so that the circuit board must rapidly move to the development of very high density, high precision and multilayering, which is most important to solve the control problems of the fineness, the position precision and the interlayer alignment precision of the "very high density" wires in the circuit board manufacturing.
Therefore, the circuit board production by adopting laser direct imaging, particularly UV direct writing technology, is vigorously carried out at present, the technology adopts laser positioning and vertical laser beam scanning, the figure position (deviation) can be ensured within +/-5 mu m, the line alignment accuracy and the position are greatly improved, in addition, a film negative film is not needed, the production of a very high-density (referring to the occasion that L/S is less than or equal to 30 mu m) fine lead can be met, the qualification rate of the fine lead manufacturing can be improved, and the repeated defects (positioning) are avoided. Because the film negative film is not used, devices for manufacturing, storing and maintaining the photographic negative film, consumed materials, energy sources, other auxiliary materials, chemical products and the like are not needed, the production and processing cost is reduced, the manufacturing process of the printed board can be shortened, the turnover time is reduced, the rapid reaction capability is improved, the intervention of human factors can be reduced, the operation process is simplified, and the production efficiency is improved. Based on the above advantages, the UV direct writing technology is rapidly developed in the manufacture of circuit boards.
However, the current technology of combining ink printing and UV light (ultraviolet light) direct writing technology is still imperfect, and particularly, the excellent and disadvantageous combination of ink printing and UV light direct writing is deficient. Patent CN102120387B discloses an inkjet printing device for full-printed electronics and circuit boards, which performs ink printing at the front end and applies light curing at the back end, but the light curing at the back end is universal light curing, and is not a UV light direct writing technology, so it is difficult to achieve the matching of the advantages and disadvantages of ink printing and UV light direct writing.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for synchronously printing and photocuring, which is characterized by comprising a printing step and a photocuring step, wherein the printing step and the photocuring step are synchronously carried out on the same PCB substrate, the synchronous time of printing and photocuring is 10-90% of the printing time or 10-90% of the photocuring time, the photocuring step is a laser direct imaging step, and a light source used for laser direct imaging is ultraviolet light.
Preferably, in the above method of simultaneous printing and photocuring, the ultraviolet light is a mixed wave of 365nm, 385nm and 405nm, or the ultraviolet light is a mixed wave of 385nm and 405 nm.
Preferably, in the above method of simultaneous printing and photocuring, the ink used in the printing step is a photocuring ink.
Synchronous printing and photocuring are exactly to same PCB substrate, photocuring while printing, the ink of printing is the photocuring ink, photocuring ink is printed on the panel after, can not form firm printing ink circuit, need carry out photocuring, if photocuring time too postpones or is asynchronous, then can lead to the position of the substrate that photocuring was aimed at to change, in order to guarantee that the same PCB substrate position that printing and photocuring were aimed at does not change, need carry out synchronous printing and photocuring.
The synchronous time refers to that when a piece of PCB substrate is printed, photocuring is carried out on the printed circuit on the PCB substrate, namely, photocuring is carried out on the PCB substrate when the PCB substrate is not printed.
For example, for a PCB substrate, printing of the entire PCB substrate requires 30 seconds, and then printing of ink on the PCB substrate is performed for 10 seconds, and then photo-curing is performed on the printed circuit of the PCB substrate, and after the printing of the substrate is completed, photo-curing is not completed yet, and photo-curing is continued for 5 seconds. The time for such printing and photocuring to work simultaneously for the substrate is 20 seconds, i.e. the synchronization time is 20 seconds. The printing time was 30 seconds, the photocuring time was 25 seconds, the synchronization time was 2/3 times the printing time, and the synchronization time was 4/5 times the photocuring time.
Preferably, in the method of simultaneous printing and photocuring, the printing is performed before the photocuring for the position where the circuit needs to be arranged on the same PCB substrate.
The purpose of printing prior to photocuring is to print photocuring ink on a PCB substrate according to a circuit diagram document, and then perform photocuring in time, wherein the photocuring process is performed after the printing process for the same PCB substrate.
Preferably, in the method for synchronously printing and photocuring, the method further comprises a PCB substrate position fixing step, and the PCB substrate position fixing step is before the printing step.
Preferably, in the method of synchronous printing and photocuring, the step of fixing the position includes fixing the angle of the plane of the PCB, where the angle is fixed between any point of the plane and a vertical line and between any point of the plane and a track direction, and the angle information is simultaneously input into a printed circuit diagram document printed by the printing device and a photocured circuit diagram document photocured by the photocuring device.
Preferably, in the method of synchronous printing and photocuring, the printing step is performed according to a printed circuit diagram document, the photocuring step is performed according to a photocuring circuit diagram document, and the printed circuit diagram document and the photocuring circuit diagram document are the same document or different documents. And under the condition that the printed circuit diagram document and the light curing circuit diagram document are different documents, the total area of the printed circuits in the printed circuit diagram document is more than or equal to the total area of the light curing circuits in the light curing circuit diagram document.
Preferably, in the method of simultaneous printing and photocuring, the PCB substrate is not moved in the printing step and the photocuring step, and the ink jet head of the printing device used in the printing step and the optical head of the photocuring device used in the photocuring step move back and forth and left and right in the horizontal direction.
The invention also provides a synchronous printing and photocuring device, which comprises a control device, a printing device and a photocuring device, wherein the control device is respectively connected with the printing device and the photocuring device, the printing device is provided with an ink nozzle, the photocuring device is provided with an optical head, and the horizontal distance between the ink nozzle of the printing device and the optical head of the photocuring device is less than or equal to the longest distance between any two points on the plane of the PCB substrate in the working state of synchronous printing and photocuring on the same PCB substrate, wherein the photocuring device is a laser direct imaging device, and the printing device is loaded with photocuring ink.
Preferably, in the above simultaneous printing and photocuring apparatus, the optical head of the laser direct imaging apparatus emits ultraviolet light, which is a mixed light wave of ultraviolet light waves of 2-5 wavelengths, wherein 2-5 wavelengths are light waves of 2-5 wavelengths of 250-450nm, preferably, the ultraviolet light is a mixed wave of 365nm, 385nm and 405nm, or, preferably, the ultraviolet light is a mixed wave of 385nm and 405 nm.
In the above synchronous printing and light curing apparatus, the printing device is provided in plurality, and the light curing device is provided in plurality. Preferably, there are a plurality of ink ejection heads and a plurality of optical heads.
Preferably, in the above synchronous printing and photocuring device, the device further comprises a PCB substrate fixing device, the fixing device has a detection device for detecting information of a fixed angle of the PCB substrate, and the detection device is connected with the control device.
Preferably, in the above apparatus, the printing device, the light curing device, and the PCB substrate fixing device in the apparatus can all realize any direction movement on the horizontal plane.
Preferably, in the above apparatus, the apparatus further includes a conveying track, the conveying track is disposed below the PCB substrate fixing device and used for moving the PCB substrate fixing device, the conveying track is provided with a conveying track power device for driving, and the conveying track power device is connected with the control device.
Preferably, in the above apparatus, the apparatus further includes a moving track, the moving track is disposed above the PCB substrate fixing device, the printing device and the light curing device are movably connected to the moving track for moving the printing device and the light curing device, the moving track is provided with a moving track power device for driving, and the moving track power device is connected to the control device for driving.
Preferably, in the above apparatus, the printing device, the light curing device, the conveying track power device, the detection device and the moving track power device are respectively connected to a control device, the control device receives information from the detection device, and the control device transmits the information to the printing device, the light curing device, the conveying track power device and the moving track power device and controls the cooperative operation of the connected apparatuses.
Preferably, in the above apparatus, the control device stores one or more circuit diagram documents, where the circuit diagram documents are control signal documents of the operation circuits of the printing device and the light curing device, and are used for controlling the printing device, the amount of ink printing and the speed of ink printing, and controlling the operation circuits of the light curing device, the intensity of the light source and the wavelength of the light source of the light curing device.
The invention has the beneficial effects that:
the method and the device for synchronous printing and photocuring solve the problems that the photocuring position does not correspond and the circuit is inaccurate due to untimely photocuring after printing or the photocuring position changes after printing in the current circuit board printing.
The method and the device for synchronously printing and photocuring also solve the problem of document timeliness, and the line is inaccurate if direct and comprehensive curing is carried out in the printing process due to printing deviation, particularly after the line is enlarged. And the line correction can be directly carried out by adopting a photocuring synchronization method.
In the synchronous printing and light curing equipment, in the process of arranging the printing ink nozzle and the light curing optical head, the printing ink nozzle is arranged in front of the light curing optical head, and the light curing optical head is arranged behind the light curing optical head, so that the equipment is simplified under the condition that the used documents are the same document. Under the condition of using differential documents, the manufacturing precision of printed circuit diagram documents and photocuring circuit diagram documents can be flexibly controlled so as to adapt to the requirements of the characteristics of ink printing and the photocuring performance of circuits.
Detailed Description
Examples
A synchronous printing and light curing device is provided with a control device, a printing device and a light curing device, wherein the printing device is provided with an ink nozzle, and the light curing device is provided with an optical head. The PCB substrate is fixed on a PCB substrate fixing device, the PCB substrate fixing device is fixed on a conveying track, the conveying track is a conveying belt or a double-track, the conveying track can move left and right and front and back, after the PCB substrate is fixed, the conveying track firstly moves from left to right, drives the conveying track to move through a servo motor to drive a speed reducer, a gear transmission mechanism, a chain transmission mechanism, a belt wheel transmission mechanism and the like, and conveys the PCB substrate fixing device to a printing and photocuring position.
Printing device and light curing device are fixed in on the removal track, and printing device and light curing device's number is the same, and every printing device corresponds a light curing device, and printing device is on the left side, and light curing device is on the right side, and the ink that printing device bore is the light curing ink, and the wavelength of light curing is 365nm, 385nm and the mixed wave of 405nm, or the ultraviolet ray is the mixed wave of 385nm and 405 nm.
The printing device and the light curing device are respectively connected with the control device, the printing device and the light curing device are driven by the moving track to move, the printing device and the light curing device can move up and down, left and right and front and back, the distance between the printing device and the light curing device can be adjusted, the distance between an ink nozzle of the printing device and an optical head of the light curing device is smaller than the length of the PCB substrate under the general condition, so that the light curing device starts to perform light curing under the condition that the printing device does not complete printing on the same PCB substrate, the whole PCB substrate needs 30 seconds for printing, when the printing device performs 10 seconds of ink printing on the PCB substrate, the optical head of the light curing device starts to perform light curing on the printed circuit of the PCB substrate, and when the substrate completes printing, the light curing is not completed, photocuring was continued for 15 seconds to complete. The time for such printing and photocuring to work simultaneously for the substrate is 20 seconds, i.e. the synchronization time is 20 seconds. The printing time was 30 seconds, the photocuring time was 35 seconds, the synchronization time was 2/3 times the printing time, and the synchronization time was 4/7 times the photocuring time.
The time for synchronous printing and photocuring is at least 10% of the printing time or more than 10% of the photocuring time, and particularly preferably more than 60%, so that photocuring is performed in a short time after printing is completed, and the printing and photocuring efficiency is ensured. After the conveying track conveys the PCB substrate to the printing and photocuring position, the image positioning device transmits the position information of the PCB substrate to the control device, and the control device performs angle adjustment on the printed circuit diagram. The line information printed by the printing device is derived from the angle-adjusted printed line graph document of the control device, and in general, the photocuring line information of the photocuring device is also derived from the angle-adjusted printed line graph document of the control device. Because the accuracy of photocuring and photocuring can be carried out synchronously with printing, the relative change of the position of the PCB substrate is extremely small, and even the position of the PCB substrate for printing and photocuring is not changed, the position does not need to be corrected again during synchronous printing and photocuring, the accuracy of photocuring is improved, and the angle information of the photocuring line graph document is saved during photocuring. Because the printing precision of the ink is low, and the precision of the photocuring is high, even if the ink extends or diffuses in the printing process, the precise photocuring can be carried out through the synchronous photocuring step.
In order to realize that the printed circuit is more refined through a photocuring link, the photocuring line graph document can be set as a qualified line graph document, the printed line graph document printed by the printing device is a corrected document of the photocuring line graph document, and the photocuring line graph document is corrected to obtain the printed line graph document which is generally wider than a printed line in the photocuring line graph document. For example, when the light-cured ink adopted for printing has poor diffusivity or excessively high viscosity, and the ink on the printing circuit extends or diffuses slowly, the printing circuit can be arranged to be wider than the circuit in the light-cured circuit diagram document when the printed circuit diagram document is manufactured, so that the condition that the light-cured circuit on a circuit board is interrupted or the light-cured circuit is notched is avoided.
Claims (11)
1. A method for synchronously printing and photocuring is characterized in that the method comprises a printing step and a photocuring step, the printing step and the photocuring step are synchronously carried out on the same PCB substrate, the synchronous time of the printing and the photocuring is 10-90% of the printing time or 10-90% of the photocuring time, the photocuring step is a laser direct imaging step, a light source used for laser direct imaging is ultraviolet light, the ultraviolet light is mixed waves of 365nm, 385nm and 405nm, or the ultraviolet light is mixed waves of 385nm and 405nm, the printing step is carried out according to a printed circuit diagram document, the photocuring step is carried out according to a photocuring circuit diagram document, the printed circuit diagram document and the photocuring circuit diagram document are the same document or different documents, and under the condition that the printed circuit diagram document and the photocuring circuit diagram document are different documents, the total area of the printing lines in the printing line graph document is larger than or equal to the total area of the photocuring lines in the photocuring line graph document.
2. The simultaneous printing and photocuring method of claim 1 wherein the ink used in the printing step is a photocuring ink.
3. The method of claim 1, wherein printing precedes photocuring for locations on the same PCB substrate where wiring is desired.
4. The method of simultaneous printing and photocuring of claim 1 further comprising a PCB substrate position fixing step, the PCB substrate position fixing step being prior to the printing step.
5. The method of claim 1, wherein the PCB substrate is stationary in the printing step and the photo-curing step, and the ink jet head of the printing device used in the printing step and the optical head of the photo-curing device used in the photo-curing step move back and forth and left and right in a horizontal direction.
6. A synchronous printing and photocuring device is characterized by comprising a control device, a printing device and a photocuring device, wherein the control device is respectively connected with the printing device and the photocuring device, the printing device is provided with an ink nozzle, the photocuring device is provided with an optical head, the horizontal distance between the ink nozzle of the printing device and the optical head of the photocuring device is less than or equal to the longest distance between any two points on the plane of a PCB substrate under the working state of synchronous printing and photocuring on the same PCB substrate, the photocuring device is a laser direct imaging device, the printing device is loaded with photocuring ink, the optical head of the laser direct imaging device emits ultraviolet light, the ultraviolet light is mixed waves of 365nm, 385nm and 405nm, or the ultraviolet light is mixed waves of 385nm and 405nm, and one or more circuit diagram documents are stored in the control device, the circuit diagram file is a control signal file of the operation route of the printing device and the light curing device, and is used for controlling the printing device, the printing ink printing amount and the printing ink printing speed, and controlling the operation route of the light curing device, the light source intensity and the light source wavelength of the light curing device.
7. The apparatus according to claim 6, wherein the printing means is provided in plurality, the photo-curing means is provided in plurality, and the ink ejection head provided for each printing means is provided in plurality and the optical head provided for each photo-curing means is provided in plurality.
8. The apparatus according to claim 6, wherein the printing device, the light curing device and the PCB substrate fixing device are all capable of moving in any direction on a horizontal plane.
9. The apparatus according to claim 6, further comprising a conveying track disposed below the PCB substrate fixing device for moving the PCB substrate fixing device, wherein the conveying track is driven by a conveying track power device, and the conveying track power device is connected to the control device.
10. The apparatus according to claim 9, further comprising a moving track, wherein the moving track is disposed above the PCB substrate fixing device, the printing device and the light-curing device are movably connected to the moving track for moving the printing device and the light-curing device, the moving track is driven by a moving track power device, and the moving track power device is connected to the control device.
11. The apparatus according to claim 10, wherein the printing device, the light curing device, the conveying track power device, the detecting device and the moving track power device are respectively connected to a control device, the control device receives information from the detecting device, and the control device transmits the information to the printing device, the light curing device, the conveying track power device and the moving track power device and controls the cooperative operation of the connected apparatuses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810555569.2A CN108819493B (en) | 2018-06-01 | 2018-06-01 | Method and equipment for synchronous printing and photocuring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810555569.2A CN108819493B (en) | 2018-06-01 | 2018-06-01 | Method and equipment for synchronous printing and photocuring |
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| CN108819493A CN108819493A (en) | 2018-11-16 |
| CN108819493B true CN108819493B (en) | 2020-01-14 |
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| CN201810555569.2A Active CN108819493B (en) | 2018-06-01 | 2018-06-01 | Method and equipment for synchronous printing and photocuring |
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Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7350890B2 (en) * | 2004-08-26 | 2008-04-01 | The Boeing Company | Apparatus and methods for applying images to a surface |
| US20120194622A1 (en) * | 2011-01-31 | 2012-08-02 | Camtek Ltd. | Ultra violet light emitting diode curing of uv reactive ink |
| US20130084404A1 (en) * | 2011-09-30 | 2013-04-04 | Semes Co., Ltd. | Apparatuses and methods for treating substrate |
| CN202895926U (en) * | 2012-11-14 | 2013-04-24 | 深圳市微特智能系统有限公司 | Circuit board ink-jet printer clamping platform |
| CN104108248A (en) * | 2013-04-19 | 2014-10-22 | 中国科学院理化技术研究所 | Liquid metal ink-jet printing equipment and printing method |
| CN203293679U (en) * | 2013-05-03 | 2013-11-20 | 广东轻工职业技术学院 | Spot-spraying apparatus for PCB solder paste jet printing |
| DE102015202616A1 (en) * | 2015-02-13 | 2015-04-16 | Heidelberger Druckmaschinen Ag | Method for editing the surface of a three-dimensional object |
| CN205112669U (en) * | 2015-11-19 | 2016-03-30 | 东莞市意维欧电子设备有限公司 | Non -contact PCB board spouts seal device |
| CN205386989U (en) * | 2015-12-30 | 2016-07-20 | 天津市希统电子设备有限公司 | PCB makes 3D fast and prints unit |
| CN206999912U (en) * | 2017-07-19 | 2018-02-13 | 广东成德电子科技股份有限公司 | A kind of printer for printed circuit board (PCB) |
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