CN103496261A - Screen painting method for thick copper plate - Google Patents
Screen painting method for thick copper plate Download PDFInfo
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- CN103496261A CN103496261A CN201310434289.3A CN201310434289A CN103496261A CN 103496261 A CN103496261 A CN 103496261A CN 201310434289 A CN201310434289 A CN 201310434289A CN 103496261 A CN103496261 A CN 103496261A
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Abstract
The invention discloses a screen painting method for a thick copper plate. The screen painting method includes the steps of first printing, a drying procedure and second printing, wherein the first printing, the drying procedure and the second printing are sequentially carried out. The screen painting method mainly solves the problem that screen painting difficulty of the thick copper plate is high, and the screen painting carried out on the thick copper plate can be stably and reliably completed through the method. The method is simple in procedure, can guarantee anti-welding production quality of the thick copper plate, and improves production benefits.
Description
Technical field
The present invention relates to the screen printing method of a kind of screen printing method, particularly thick copper coin.
Background technology
The anti-welding printing of thick copper coin is the necessary technique that thick copper coin is produced, and can play the protection outer-layer circuit, in order to avoid the problems such as outer-layer circuit oxidation or solder shorts occur.Anti-welding printing adopts screen printing method at present, but has certain degree of difficulty for the silk-screen of thick copper coin, and production line generally adopts one-step print, by adjusting grenadine order number and squeegee pressure, increases lower oil mass.Because circuit copper is too thick, adopt traditional one-step print to be difficult to guaranteed quality, the problems such as wrinkling, bubble circuit jaundice easily appear between line angle ink thickness deficiency or circuit occurring.
The production method that adopts secondary printing is also arranged simultaneously, but many secondary printings need to be through twice baking, or need two screen printers to be printed simultaneously, the various cost of operation is high, and during for the silk-screen of thick copper coin, also there will be ink thickness inhomogeneous, occur the problems such as wrinkling, bubble, circuit jaundice between circuit.
Summary of the invention
In view of this, the present invention, for solving the problems of the technologies described above, provides a kind of reliable and stable, can greatly guarantee the screen printing method of thick copper coin of the anti-welding production quality of thick copper coin.
Technical scheme provided by the invention is:
A kind of screen printing method of thick copper coin, comprise the first impression, drying process and the second impression carried out successively;
The first impression: use scraper to scrape the first printing ink, the first printing ink is transferred on thick copper coin by the mesh that is provided with the picture and text part, form the ground floor picture and text; Add diluent in described the first printing ink, wherein the quality of diluent accounts for the 1%-2% of printing ink gross mass;
Drying process: the thick copper coin that will be printed on the ground floor picture and text is placed on the standing 15-30 minute in ventilation, and this drying process carries out at normal temperatures;
The second impression: use scraper to scrape the second printing ink, the second printing ink is transferred on thick copper coin by the mesh that is provided with the picture and text part, and formed second layer picture and text on the ground floor picture and text; Described the second printing ink does not add diluent.
This screen printing method mainly solves the large problem of silk-screen difficulty of thick copper coin, utilizes the method can reliablely and stablely complete the silk-screen of thick copper coin.
During the first impression, in the first printing ink, add diluent, wherein the quality of diluent accounts for the 1%-2% of printing ink gross mass, make ink viscosity drop to 150dpa.s by traditional 170-220dpa.s, and, under the scraping of scraper, by mesh, transferred on thick copper coin, form the ground floor picture and text.After completing the first impression, thick copper coin is placed on to ventilation, and standing 15-30 minute, dry the printing ink that has formed picture and text on thick copper coin, and then launch the second impression of thick copper coin.During the second impression, owing to now on thick copper coin, being provided with one deck picture and text, the second impression is carried out on the ground floor picture and text, therefore the printing ink that this time printing is used is different: the second printing ink does not need to add diluent, the viscosity of the second printing ink is consistent with traditional ink viscosity, is 170-220dpa.s.The thick copper coin out by the second ink silk screen printing, can accomplish that quantity of ink is moderate and be evenly distributed, wrinkle resistant between circuit, can not produce the problems such as bubble, circuit jaundice, effectively guaranteed thick copper coin silk-screen quality.The inventive method operation is simple, and silk-screen excellent, practicality are high.
During the described first impression, the pressure of scraper pressure network is 50-75kgf, and the speed that scraper is advanced is 1.2-3.0m/min; During the described second impression, the pressure of scraper pressure network is 55-85kgf, and the speed that scraper is advanced is 0.8-1.0m/min.
During the first impression, owing in the first printing ink, having added diluent, the viscosity of printing ink descends.Therefore, best in quality for obtaining, the pressure of scraper pressure network need to reduce accordingly, is reduced to 50-75kgf, and the scraper gait of march can improve a little, is increased to 1.2-3.0m/min.
Due to the printing ink not diluted dilution agent that the second impression is used, its viscosity is higher, has stronger adhesive force.After guaranteeing the second impression, thick copper coin can have the quality of high-quality, is defined in this time printing, and the pressure of scraper need to strengthen 5-10kgf, reaches 55-85kgf, and the scraper gait of march slows down to 0.8-1.0m/min.
For verifying the actual effect of above data, launched series of experiments.Experimental result shows, in silk-screen printing process, takes above parameter can obtain good effect, can effectively reduce ink layer wrinkling, produces the phenomenons such as bubble.
It is 55T/cm that the netting index order is used in the described first impression
2web plate, it is 36T/cm that the mesh number is used in the described second impression
2web plate.
The screen printing method of described thick copper coin also comprises the roasting procedure be arranged on after the second impression, and the baking temperature of described roasting procedure is 70 ℃-80 ℃, and baking time is 30-40 minute.
During baking, the height of temperature has a great impact silk-screen effect tool, therefore selects suitable baking temperature particularly important.The temperature of 70 ℃-80 ℃, can not impact the composition and structure of thick copper coin and printing ink, and, at this temperature, can dry more quickly ink layer.Particularly, as 75 ℃ of scheme most preferably, its effect is very outstanding.
The assurance of baking time is also the important step that determines thick copper coin silk-screen quality.Under 70-80 ℃, printing ink is distinguished to some extent compared to traditional handicraft required drying time.In order to dry rightly ink layer, and be issued to energy-conservation purpose in the prerequisite that ensures one's best quality, baking time should be arranged on 30-40 minute.As scheme most preferably, when baking temperature is 75 ℃, best baking time is 35 minutes.
The screen printing method of described thick copper coin also comprises the exposure process be arranged on after roasting procedure, and the exposure energy of described exposure process is set to the 13-15 lattice.
Because the height of exposure energy has a great impact thick copper coin silk-screen quality.If exposure energy arranges too low, the photocuring degree deficiency of printing ink, be very easy to disappear in development; If exposure energy is too high, the photocuring degree of printing ink is too high, and part printing ink can't be in the elimination of developing.As scheme most preferably, when exposure energy is 14 lattice, can obtain best exposure effect.
The screen printing method of described thick copper coin also comprises the rear roasting operation be arranged on after exposure process, the carrying out in the segmented baking box of described rear roasting operation.For printing ink solvent is fully volatilized, in rear roasting operation, use the segmented baking box to be toasted, piecemeal thick copper coin is toasted, to guarantee thick copper coin quality.
The copper of described thick copper coin is thick is more than 3 ounces.For current technology to this type of thickness copper coin without good screen printing method, the present invention is mainly for the silk-screen problem of thick copper coin, can play the current in-problem effect that solves.
Compared with prior art, the present invention has following advantage:
Screen printing method of the present invention mainly solves the large problem of thick copper coin silk-screen difficulty, utilizes the method can reliablely and stablely complete the silk-screen of thick copper coin; And this inventive method operation is simple, can guarantee the anti-welding production quality of thick copper coin, improve productivity effect.
The specific embodiment
For the ease of it will be appreciated by those skilled in the art that below, will to the present invention, be explained in further detail by embodiment.
Embodiment 1
A kind of screen printing method of thick copper coin, comprise the first impression, drying process and the second impression carried out successively;
The first impression: use scraper to scrape the first printing ink, the first printing ink is transferred on thick copper coin by the mesh that is provided with the picture and text part, form the ground floor picture and text; Add diluent in described the first printing ink, wherein the quality of diluent accounts for 1% of printing ink gross mass;
Drying process: the thick copper coin that will be printed on the ground floor picture and text is placed on ventilation standing 15 minutes, and this drying process carries out at normal temperatures;
The second impression: use scraper to scrape the second printing ink, the second printing ink is transferred on thick copper coin by the mesh that is provided with the picture and text part, and formed second layer picture and text on the ground floor picture and text; Described the second printing ink does not add diluent.
This screen printing method mainly solves the large problem of silk-screen difficulty of thick copper coin, utilizes the method can reliablely and stablely complete the silk-screen of thick copper coin.
During the first impression, in the first printing ink, add diluent, wherein the quality of diluent accounts for 1% of printing ink gross mass, make ink viscosity drop to 150dpa.s by traditional 170-220dpa.s, and, under the scraping of scraper, by mesh, transferred on thick copper coin, form the ground floor picture and text.After completing the first impression, thick copper coin is placed on to ventilation, and standing 15 minutes, dry the printing ink that has formed picture and text on thick copper coin, and then launch the second impression of thick copper coin.During the second impression, owing to now on thick copper coin, being provided with one deck picture and text, the second impression is carried out on the ground floor picture and text, and the printing ink that therefore this time printing is used is different: the second printing ink does not need to add diluent, the viscosity of the second printing ink is consistent with traditional ink viscosity, is 180dpa.s.The thick copper coin out by the second ink silk screen printing, can accomplish that quantity of ink is moderate and be evenly distributed, wrinkle resistant between circuit, can not produce the problems such as bubble, circuit jaundice, effectively guaranteed thick copper coin silk-screen quality.The inventive method operation is simple, and silk-screen excellent, practicality are high.
During the described first impression, the pressure of scraper pressure network is 60kgf, and the speed that scraper is advanced is 2.0m/min; During the described second impression, the pressure of scraper pressure network is 70kgf, and the speed that scraper is advanced is 0.8m/min.
During the first impression, owing in the first printing ink, having added diluent, the viscosity of printing ink descends.Therefore, best in quality for obtaining, the pressure of scraper pressure network need to reduce accordingly, is reduced to 60kgf, and the scraper gait of march can improve a little, is increased to 2.0m/min.
Due to the printing ink not diluted dilution agent that the second impression is used, its viscosity is higher, has stronger adhesive force.After guaranteeing the second impression, thick copper coin can have the quality of high-quality, is defined in this time printing, and the pressure of scraper need to strengthen 10kgf, reaches 70kgf, and the scraper gait of march slows down to 0.8m/min.
For verifying the actual effect of above data, launched series of experiments.Experimental result shows, in silk-screen printing process, takes above parameter can obtain good effect, can effectively reduce ink layer wrinkling, produces the phenomenons such as bubble.
It is 55T/cm that the netting index order is used in the described first impression
2web plate, it is 36T/cm that the mesh number is used in the described second impression
2web plate.
The screen printing method of described thick copper coin also comprises the roasting procedure be arranged on after the second impression, and the temperature of described roasting procedure is 75 ℃, and described baking time is 35 minutes.
During baking, the height of temperature has a great impact silk-screen effect tool, therefore selects suitable baking temperature particularly important.The temperature of 75 ℃, can not impact the composition and structure of thick copper coin and printing ink, and, at this temperature, can dry more quickly ink layer.
The assurance of baking time is also the important step that determines thick copper coin silk-screen quality.Under 75 ℃, printing ink is distinguished to some extent compared to traditional handicraft required drying time.In order to dry rightly ink layer, and be issued to energy-conservation purpose in the prerequisite that ensures one's best quality, baking time should be arranged on 35 minutes.
The screen printing method of described thick copper coin also comprises the exposure process be arranged on after roasting procedure, and the exposure energy of described exposure process is set to 13 lattice.
Because the height of exposure energy has a great impact thick copper coin silk-screen quality.If exposure energy arranges too low, the photocuring degree deficiency of printing ink, be very easy to disappear in development; If exposure energy is too high, the photocuring degree of printing ink is too high, and part printing ink can't be in the elimination of developing.
The screen printing method of described thick copper coin also comprises the rear roasting operation be arranged on after exposure process, the carrying out in the segmented baking box of described rear roasting operation.For printing ink solvent is fully volatilized, in rear roasting operation, use the segmented baking box to be toasted, piecemeal thick copper coin is toasted, to guarantee thick copper coin quality.
The copper of described thick copper coin is thick is 3 ounces.For current technology to this type of thickness copper coin without good screen printing method, the present invention is mainly for the silk-screen problem of thick copper coin, can play the current in-problem effect that solves.
Embodiment 2
A kind of screen printing method of thick copper coin, comprise the first impression, drying process and the second impression carried out successively;
The first impression: use scraper to scrape the first printing ink, the first printing ink is transferred on thick copper coin by the mesh that is provided with the picture and text part, form the ground floor picture and text; Add diluent in described the first printing ink, wherein the quality of diluent accounts for 1.5% of printing ink gross mass;
Drying process: the thick copper coin that will be printed on the ground floor picture and text is placed on ventilation standing 25 minutes, and this drying process carries out at normal temperatures;
The second impression: use scraper to scrape the second printing ink, the second printing ink is transferred on thick copper coin by the mesh that is provided with the picture and text part, and formed second layer picture and text on the ground floor picture and text; Described the second printing ink does not add diluent.
This screen printing method mainly solves the large problem of silk-screen difficulty of thick copper coin, utilizes the method can reliablely and stablely complete the silk-screen of thick copper coin.
During the first impression, in the first printing ink, add diluent, wherein the quality of diluent accounts for 1.5% of printing ink gross mass, make ink viscosity drop to 150dpa.s by traditional 170-220dpa.s, and, under the scraping of scraper, by mesh, transferred on thick copper coin, form the ground floor picture and text.After completing the first impression, thick copper coin is placed on to ventilation, and standing 25 minutes, dry the printing ink that has formed picture and text on thick copper coin, and then launch the second impression of thick copper coin.During the second impression, owing to now on thick copper coin, being provided with one deck picture and text, the second impression is carried out on the ground floor picture and text, and the printing ink that therefore this time printing is used is different: the second printing ink does not need to add diluent, the viscosity of the second printing ink is consistent with traditional ink viscosity, is 200dpa.s.The thick copper coin out by the second ink silk screen printing, can accomplish that quantity of ink is moderate and be evenly distributed, wrinkle resistant between circuit, can not produce the problems such as bubble, circuit jaundice, effectively guaranteed thick copper coin silk-screen quality.The inventive method operation is simple, and silk-screen excellent, practicality are high.
During the described first impression, the pressure of scraper pressure network is 75kgf, and the speed that scraper is advanced is 2.2m/min; During the described second impression, the pressure of scraper pressure network is 80kgf, and the speed that scraper is advanced is 1.0m/min.
During the first impression, owing in the first printing ink, having added diluent, the viscosity of printing ink descends.Therefore, best in quality for obtaining, the pressure of scraper pressure network need to reduce accordingly, is reduced to 75kgf, and the scraper gait of march can improve a little, is increased to 2.2m/min.
Due to the printing ink not diluted dilution agent that the second impression is used, its viscosity is higher, has stronger adhesive force.After guaranteeing the second impression, thick copper coin can have the quality of high-quality, is defined in this time printing, and the pressure of scraper need to strengthen 7kgf, reaches 82kgf, and the scraper gait of march slows down to 1.0m/min.
For verifying the actual effect of above data, launched series of experiments.Experimental result shows, in silk-screen printing process, takes above parameter can obtain good effect, can effectively reduce ink layer wrinkling, produces the phenomenons such as bubble.
It is 55T/cm that the netting index order is used in the described first impression
2web plate, it is 36T/cm that the mesh number is used in the described second impression
2web plate.
The screen printing method of described thick copper coin also comprises the roasting procedure be arranged on after the second impression, and the temperature of described roasting procedure is 70 ℃, and described baking time is 40 minutes.
During baking, the height of temperature has a great impact silk-screen effect tool, therefore selects suitable baking temperature particularly important.The temperature of 70 ℃, can not impact the composition and structure of thick copper coin and printing ink, and, at this temperature, can dry more quickly ink layer.
The assurance of baking time is also the important step that determines thick copper coin silk-screen quality.Under 70 ℃, printing ink is distinguished to some extent compared to traditional handicraft required drying time.In order to dry rightly ink layer, and be issued to energy-conservation purpose in the prerequisite that ensures one's best quality, baking time should be arranged on 40 minutes.
The screen printing method of described thick copper coin also comprises the exposure process be arranged on after roasting procedure, and the exposure energy of described exposure process is set to 14 lattice.
Because the height of exposure energy has a great impact thick copper coin silk-screen quality.If exposure energy arranges too low, the photocuring degree deficiency of printing ink, be very easy to disappear in development; If exposure energy is too high, the photocuring degree of printing ink is too high, and part printing ink can't be in the elimination of developing.
The screen printing method of described thick copper coin also comprises the rear roasting operation be arranged on after exposure process, the carrying out in the segmented baking box of described rear roasting operation.For printing ink solvent is fully volatilized, in rear roasting operation, use the segmented baking box to be toasted, piecemeal thick copper coin is toasted, to guarantee thick copper coin quality.
The copper of described thick copper coin is thick is 5 ounces.For current technology to this type of thickness copper coin without good screen printing method, the present invention is mainly for the silk-screen problem of thick copper coin, can play the current in-problem effect that solves.
Embodiment 3
A kind of screen printing method of thick copper coin, comprise the first impression, drying process and the second impression carried out successively;
The first impression: use scraper to scrape the first printing ink, the first printing ink is transferred on thick copper coin by the mesh that is provided with the picture and text part, form the ground floor picture and text; Add diluent in described the first printing ink, wherein the quality of diluent accounts for 2% of printing ink gross mass;
Drying process: the thick copper coin that will be printed on the ground floor picture and text is placed on ventilation standing 30 minutes, and this drying process carries out at normal temperatures;
The second impression: use scraper to scrape the second printing ink, the second printing ink is transferred on thick copper coin by the mesh that is provided with the picture and text part, and formed second layer picture and text on the ground floor picture and text; Described the second printing ink does not add diluent.
This screen printing method mainly solves the large problem of silk-screen difficulty of thick copper coin, utilizes the method can reliablely and stablely complete the silk-screen of thick copper coin.
During the first impression, in the first printing ink, add diluent, wherein the quality of diluent accounts for 2% of printing ink gross mass, make ink viscosity drop to 150dpa.s by traditional 170-220dpa.s, and, under the scraping of scraper, by mesh, transferred on thick copper coin, form the ground floor picture and text.After completing the first impression, thick copper coin is placed on to ventilation, and standing 30 minutes, dry the printing ink that has formed picture and text on thick copper coin, and then launch the second impression of thick copper coin.During the second impression, owing to now on thick copper coin, being provided with one deck picture and text, the second impression is carried out on the ground floor picture and text, therefore the printing ink that this time printing is used is different: the second printing ink does not need to add diluent, the viscosity of the second printing ink is consistent with traditional ink viscosity, is 170-220dpa.s.The thick copper coin out by the second ink silk screen printing, can accomplish that quantity of ink is moderate and be evenly distributed, wrinkle resistant between circuit, can not produce the problems such as bubble, circuit jaundice, effectively guaranteed thick copper coin silk-screen quality.The inventive method operation is simple, and silk-screen excellent, practicality are high.
During the described first impression, the pressure of scraper pressure network is 50kgf, and the speed that scraper is advanced is 3.0m/min; During the described second impression, the pressure of scraper pressure network is 60kgf, and the speed that scraper is advanced is 0.9m/min.
During the first impression, owing in the first printing ink, having added diluent, the viscosity of printing ink descends.Therefore, best in quality for obtaining, the pressure of scraper pressure network need to reduce accordingly, is reduced to 50kgf, and the scraper gait of march can improve a little, is increased to 3.0m/min.
Due to the printing ink not diluted dilution agent that the second impression is used, its viscosity is higher, has stronger adhesive force.After guaranteeing the second impression, thick copper coin can have the quality of high-quality, is defined in this time printing, and the pressure of scraper need to strengthen 10kgf, reaches 60kgf, and the scraper gait of march slows down to 0.9m/min.
For verifying the actual effect of above data, launched series of experiments.Experimental result shows, in silk-screen printing process, takes above parameter can obtain good effect, can effectively reduce ink layer wrinkling, produces the phenomenons such as bubble.
It is 55T/cm that the netting index order is used in the described first impression
2web plate, it is 36T/cm that the mesh number is used in the described second impression
2web plate.
The screen printing method of described thick copper coin also comprises the roasting procedure be arranged on after the second impression, and the temperature of described roasting procedure is 80 ℃, and described baking time is 30 minutes.
During baking, the height of temperature has a great impact silk-screen effect tool, therefore selects suitable baking temperature particularly important.The temperature of 80 ℃, can not impact the composition and structure of thick copper coin and printing ink, and, at this temperature, can dry more quickly ink layer.
The assurance of baking time is also the important step that determines thick copper coin silk-screen quality.Under 80 ℃, printing ink is distinguished to some extent compared to traditional handicraft required drying time.In order to dry rightly ink layer, and be issued to energy-conservation purpose in the prerequisite that ensures one's best quality, baking time should be arranged on 30 minutes.
The screen printing method of described thick copper coin also comprises the exposure process be arranged on after roasting procedure, and the exposure energy of described exposure process is set to 15 lattice.
Because the height of exposure energy has a great impact thick copper coin silk-screen quality.If exposure energy arranges too low, the photocuring degree deficiency of printing ink, be very easy to disappear in development; If exposure energy is too high, the photocuring degree of printing ink is too high, and part printing ink can't be in the elimination of developing.
The screen printing method of described thick copper coin also comprises the rear roasting operation be arranged on after exposure process, the carrying out in the segmented baking box of described rear roasting operation.For printing ink solvent is fully volatilized, in rear roasting operation, use the segmented baking box to be toasted, piecemeal thick copper coin is toasted, to guarantee thick copper coin quality.
The copper of described thick copper coin is thick is 4 ounces.For current technology to this type of thickness copper coin without good screen printing method, the present invention is mainly for the silk-screen problem of thick copper coin, can play the current in-problem effect that solves.
Above-described embodiment is the preferred embodiment of the present invention, and in addition, the present invention can also have other implementations.That is to say, under the prerequisite that does not break away from the present invention's design, within any apparent replacement also should fall into protection scope of the present invention.
Claims (7)
1. the screen printing method of a thick copper coin, is characterized in that: comprise the first impression, drying process and the second impression carried out successively;
(1) first impression: use scraper to scrape the first printing ink, the first printing ink is transferred on thick copper coin by the mesh that is provided with the picture and text part, form the ground floor picture and text; Add diluent in described the first printing ink, wherein the quality of diluent accounts for the 1%-2% of printing ink gross mass;
(2) drying process: the thick copper coin that will be printed on the ground floor picture and text is placed on the standing 15-30 minute in ventilation, and this drying process carries out at normal temperatures;
(3) second impression: use scraper to scrape the second printing ink, the second printing ink is transferred on thick copper coin by the mesh that is provided with the picture and text part, and formed second layer picture and text on the ground floor picture and text; Described the second printing ink does not add diluent.
2. thick copper coin screen printing method according to claim 1, it is characterized in that: during the described first impression, the pressure of scraper pressure network is 50-75kgf, and the speed that scraper is advanced is 1.2-3.0m/min; During the described second impression, the pressure of scraper pressure network is 55-85kgf, and the speed that scraper is advanced is 0.8-1.0m/min.
3. thick copper coin screen printing method according to claim 2 is characterized in that: it is 55T/cm that the netting index order is used in the described first impression
2web plate, it is 36T/cm that the mesh number is used in the described second impression
2web plate.
4. thick copper coin screen printing method according to claim 3 is characterized in that: also comprise the roasting procedure be arranged on after the second impression, the baking temperature of described roasting procedure is 70 ℃-80 ℃, and baking time is 30-40 minute.
5. thick copper coin screen printing method according to claim 4 is characterized in that: also comprise the exposure process be arranged on after roasting procedure, the exposure energy of described exposure process is set to the 13-15 lattice.
6. thick copper coin screen printing method according to claim 5 is characterized in that: also comprise the rear roasting operation be arranged on after exposure process, the carrying out in the segmented baking box of described rear roasting operation.
7. according to the described thick copper coin screen printing method of any one in claim 1 to 6, it is characterized in that: the copper of described thick copper coin is thick be 3 ounces or more than.
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| CN105799348A (en) * | 2016-04-20 | 2016-07-27 | 江苏凯尔生物识别科技有限公司 | Preparing method of surface coatings of chips |
| CN105904862A (en) * | 2016-04-20 | 2016-08-31 | 江苏凯尔生物识别科技有限公司 | Preparation method of surface coatings of fingerprint chips |
| CN108882548A (en) * | 2018-08-21 | 2018-11-23 | 浙江罗奇泰克电子有限公司 | A kind of LED light source board solder mask surface cure technique |
| CN109496082A (en) * | 2018-10-13 | 2019-03-19 | 奥士康科技股份有限公司 | A kind of super thick copper sheet anti-welding printing method |
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| CN101977483A (en) * | 2010-08-20 | 2011-02-16 | 奥士康精密电路（惠州）有限公司 | Welding resistance method for industrial control panel |
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| CN103079355A (en) * | 2012-12-28 | 2013-05-01 | 胜宏科技（惠州）股份有限公司 | PCB (printed circuit board) thick copper board ink printing method |
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