CN108146066A - UV-LED curing modules - Google Patents
UV-LED curing modules Download PDFInfo
- Publication number
- CN108146066A CN108146066A CN201810200696.0A CN201810200696A CN108146066A CN 108146066 A CN108146066 A CN 108146066A CN 201810200696 A CN201810200696 A CN 201810200696A CN 108146066 A CN108146066 A CN 108146066A
- Authority
- CN
- China
- Prior art keywords
- light source
- modules
- led curing
- feed pathway
- light sources
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 238000007711 solidification Methods 0.000 claims abstract description 20
- 230000008023 solidification Effects 0.000 claims abstract description 20
- 230000005611 electricity Effects 0.000 claims abstract description 13
- 230000037361 pathway Effects 0.000 claims description 30
- 230000008676 import Effects 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000001723 curing Methods 0.000 description 18
- 239000002826 coolant Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- POIUWJQBRNEFGX-XAMSXPGMSA-N cathelicidin Chemical compound C([C@@H](C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H]([C@@H](C)CC)C(=O)NCC(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](C(C)C)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CO)C(O)=O)NC(=O)[C@H](CC=1C=CC=CC=1)NC(=O)[C@H](CC(O)=O)NC(=O)CNC(=O)[C@H](CC(C)C)NC(=O)[C@@H](N)CC(C)C)C1=CC=CC=C1 POIUWJQBRNEFGX-XAMSXPGMSA-N 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/0403—Drying webs
- B41F23/0406—Drying webs by radiation
- B41F23/0409—Ultraviolet dryers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/0476—Cooling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
Abstract
The present invention relates to printing technology more particularly to a kind of UV LED curing modules.The UV LED curing modules of the present invention, including control system, velocity-measuring system, temperature sensor, UV light source modules, cooling system, solidification device control switch and man-machine interface, control system is respectively with velocity-measuring system, temperature sensor, UV light source modules, cooling system, solidification device control switch, man-machine interface Electricity Federation, and solidification device control switchs and the solidification device Electricity Federation of original-pack printing machine.In use, the UV LED curing modules of the present invention are directly installed on printing equipment.By the system of the present invention, by UV light sources and print speed printing speed Synchronization Control so that the present invention does not reduce the solidification effect of ink in printing.The temperature of UV light sources is effectively reduced by cooling system, ensures that UV light sources work long hours, extends the service life of UV light sources.
Description
Technical field
The present invention relates to printing technology more particularly to a kind of UV-LED curing modules.
Background technology
At present, well known printing ink is mostly solvent-based ink, and printing ink is related to Voc when printing curing molding
It discharges and pollutes atmospheric environment.Realize that UV-LED curing technologies can make off-set oil ink Voc discharges be zero.And current UV-
The cured printing equipments of LED are expensive, and all-round popularization brings serious equipment cost problem.And traditional UV-LED
In long-term work, the calorific value of UV-LED light sources can also increase cured printed machine, and high temperature causes UV-LED light source lifes to shorten, such as
Light source is shut down in fruit midway, can influence production efficiency.For traditional UV-LED printing equipments also there are light source irradiation it is uneven, lead
Curing quality during printing is caused to decline, ink cannot fully cure during particularly with high speed printing.
Invention content
To solve the above-mentioned problems and and propose a kind of UV-LED curing modules.
A kind of UV-LED curing modules, including control system, velocity-measuring system and UV light source modules, control system respectively and is surveyed
Speed system, UV light source modules Electricity Federation, its main feature is that, the UV-LED curing modules further include cooling system, solidification device control
Switch and man-machine interface, cooling system, solidification device control switch, man-machine interface respectively with control system Electricity Federation, solidification device control
The solidification device Electricity Federation of switch and original-pack printing machine.
Preferably, the UV light source modules include light source drive system and UV light sources, control system, light source drive system
It is sequentially connected in series with UV light sources.
Preferably, the UV light sources are UV-LED lamps.
Preferably, the man-machine interface includes display screen and voice announcer.
Preferably, the UV-LED curing modules further include temperature sensor, temperature sensor and control system Electricity Federation,
Temperature sensor is mounted near UV light sources.
Preferably, the UV light source modules further include UV light source brackets and heat radiating joint, UV light source modules lower surface two
End is separately installed with left pillar and right pillar, and heat radiating joint is mounted on UV light source modules top, and UV light sources are arranged on UV light sources
Stent lower part, UV light source brackets inside setting cooling passage, the cooling passage are connected with radiator.
Preferably, the cooling passage include being arranged on feed pathway inside UV light source brackets, return passage with
And be arranged on UV light source brackets right-end openings towards right right end hole, inlet and outlet is set on heat radiating joint, right end hole connect into
Liquid channel and return passage, import, feed pathway, right end hole, return passage, outlet penetrate through successively, are installed in the opening of right end hole
There is right end cap.
Preferably, the return passage includes front loop channel and rear return passage, before the feed pathway includes
Feed pathway and rear feed pathway, preceding feed pathway and rear feed pathway are separately positioned on the both sides of UV light sources, UV light source brackets
The intermediate loop channel of left side setting connection front loop channel and rear return passage with connect preceding feed pathway and rear feed pathway
Left end hole, left end cap is installed on left end hole.
Preferably, connection fixture is set on the left pillar and right pillar, UV light source modules pass through left pillar and the right side
Pillar is fixed on the printer.
Preferably, use is separately mounted to printing machine upper and lower part to the UV light source modules in pairs.
The beneficial effects of the invention are as follows：The present invention relates to UV-LED curing modules, can be direct by the system of the present invention
It is installed on original-pack printing machine and uses, without buying special printing machine, printed so as to will effectively cure to UV-LED
Brush cost.By UV light sources and print speed printing speed Synchronization Control so that the present invention does not reduce the solidification effect of ink in printing.It is logical
The temperature that cooling system effectively reduces UV light sources is crossed, ensures that UV light sources work long hours, extends the service life of UV light sources.
Description of the drawings
Fig. 1 is control principle drawing of the present invention.
Fig. 2 is structure diagram of the present invention.
Fig. 3 is topology layout figure of the present invention.
Fig. 4 is UV light source modules top oblique view of the present invention.
Fig. 5 is UV light source modules lower part oblique view of the present invention.
Fig. 6 is UV light source modules front view of the present invention.
Fig. 7 is the left view of Fig. 6.
Fig. 8 is the right view of Fig. 6.
Fig. 9 is the A-A views of Fig. 7.
Figure 10 is the B-B views of Fig. 6.
Figure 11 is the C-C views of Fig. 6.
Figure 12 is the D-D views of Fig. 6.
Wherein：1-UV light source modules；2- control systems；3- man-machine interfaces；4- cooling systems；5- velocity-measuring systems；6- prints
Machine；11-UV light source brackets；The left pillars of 12-；The right pillars of 13-；14- heat radiating joints；15- imports；16- is exported；17-UV light sources；
18- left end caps；19- right end caps；22- solidification devices control switch；31- display screens；32- voice announcers；Feed pathway before 111-；
Feed pathway after 112-；113- front loop channels；Return passage after 114-；115- intermediate loop channels；116- right ends hole；117
Temperature sensor；171 light source drive systems.
Specific embodiment
The present invention will be further described below in conjunction with the accompanying drawings.
If Fig. 1 is control principle drawing of the present invention, Fig. 2 is structure diagram of the present invention, and Fig. 3 is topology layout figure of the present invention.This
Invention is related to a kind of UV-LED curing modules, including control system 2, velocity-measuring system 5, UV light source modules 1, cooling system 4, curing
Device control switch 22 and man-machine interface 3, control system 2 respectively with velocity-measuring system 5, UV light source modules 1, cooling system 4, solidification device
The solidification device Electricity Federation of control switch 22,3 Electricity Federation of man-machine interface, solidification device control switch 22 and original-pack printing machine.Wherein one control
System 2 processed sum number set UV-LED curing modules can be connected simultaneously with a cooling system 4, while control number set UV-LED curings
Module works, for more set UV-LED curing module radiating and coolings.The wherein described UV light source modules 1 include light source drive system
171 and UV light sources 17, control system 2, light source drive system 171 and UV light sources 17 are sequentially connected in series.Pass through control system 2 and light source
The effect of drive system 171 changes the luminous intensity of UV light sources 17.When velocity-measuring system 5 detects that the material speed of printing changes
When, the signal of detection is communicated to control system 2, control system 2 is made the instruction for changing 17 light intensity of UV light sources, passed through accordingly
Light source drive system 171 changes 17 light intensity of UV light sources.Faster for the material speed of printing, the light intensity of corresponding UV light sources 17 is got over
It is high.The wherein described UV light sources 17 are UV-LED lamps, and fever can be reduced to the greatest extent by UV-LED, as much as possible to incite somebody to action
Electric energy is converted to luminous energy, and general electric energy turns the efficiency of luminous energy up to more than 80%, and the service life is relatively also very long.The UV-LED
Curing module further includes temperature sensor 117,2 Electricity Federation of temperature sensor 117 and control system, and temperature sensor 117 is mounted on
Near UV light sources 17, for detecting the temperature near UV light sources 17, early warning can be carried out when temperature is more than certain preset value, is kept away
Exempt from UV light sources 17 to work long hours, and heat accumulative causes the temperature rise of UV-LED curing modules, so as to cause UV light sources 17
Reduced lifetime.And man-machine interface 3 include display screen 31 and voice announcer 32, when UV-LED curing modules break down or
When temperature is higher, corresponding fault message is shown by display screen 31, and can be carried out by display screen 31 accordingly detect and
Operation, at the same voice broadcast 32 can voice reminder staff it is noted that.It can also be operated by display screen 31.Work as printing
Machine closes UV-LED modular systems, works as usual when using conventional solvent ink；When printing machine uses UV-LED ink,
Control system 2 closes hot wind solidification device heating system, while open UV-LED modular systems by solidification device control switch 22.
PLC intelligent controllers may be used for the control system of the present invention.
If Fig. 4 is UV light source modules top oblique view of the present invention.Fig. 5 is UV light source modules lower part oblique view of the present invention.Fig. 6
It is UV light source modules front view of the present invention.Fig. 7 is the left view of Fig. 6.Fig. 8 is the right view of Fig. 6.Fig. 9 is the A-A views of Fig. 7.
Figure 10 is the B-B views of Fig. 6.Figure 11 is the C-C views of Fig. 6.Figure 12 is the D-D views of Fig. 6.The UV light source modules 1 of the present invention
Structure include UV light source brackets 11 and heat radiating joint 14,1 lower surface both ends of UV light source modules are separately installed with left pillar 12
With right pillar 13, connection fixture is set on left pillar 12 and right pillar 13, UV light source modules 1 pass through left pillar 12 and right pillar
Fixing piece on 13 is fixed on printing machine 6, wherein the connection fixture can be bolt or magnet.Heat radiating joint 14
Mounted on 1 top of UV light source modules, UV light sources 17 are arranged on 11 lower part of UV light source brackets, and the 11 inside setting of UV light source brackets is cold
But liquid channel, the cooling passage are connected with radiator.Wherein, the cooling passage includes being arranged on UV light source branch
Feed pathway, return passage inside frame 11 and 11 right-end openings of UV light source brackets are arranged on towards right right end hole 116, heat dissipation
Import 15 and outlet 16 are set on connector 14, and right end hole 116 connects feed pathway and return passage, import 15, feed pathway, the right side
Stomidium 116, return passage, outlet 16 penetrate through successively, and right end cap 19 is equipped in the opening of right end hole 116.Preferably, time
Paths include front loop channel 113 and rear return passage 114, and the feed pathway includes preceding feed pathway 111 and laggard
Liquid channel 112, preceding feed pathway 111 and rear feed pathway 112 are separately positioned on the both sides of UV light sources 17, and UV light source brackets 11 are left
The intermediate loop channel 115 of side setting connection front loop channel 113 and rear return passage 114 with connect before 111 He of feed pathway
The left end hole of feed pathway 112 afterwards, is equipped with left end cap 18 on left end hole.When in use, temperature sensor 117 senses UV
When 17 temperature of light source is higher, control system 2 instructs cooling system 4 to work, and cooling system 4, which starts, inputs coolant by pipeline
To import 15, outlet 16 is then flowed back by cooling passage, the heat of UV light sources 17 is brought by heat dissipation by coolant
System 4, so as to cool down for UV light sources 17.The coolant of the present invention can be water, and use cost is relatively low.The UV light source modules
1 uses in pairs, is separately mounted to the upper and lower part of printing machine 6, full and uniform light is provided for printing work.
Embodiment of above is merely to illustrate the present invention, and not limitation of the present invention, in relation to the common of technical field
Technical staff without departing from the spirit and scope of the present invention, can also make a variety of changes and modification, therefore all
Equivalent technical solution also belongs to scope of the invention, and scope of patent protection of the invention should be defined by the claims.
Claims (10)
1. a kind of UV-LED curing modules, including control system（2）, velocity-measuring system（5）With UV light source modules（1）, control system
（2）Respectively and velocity-measuring system（5）, UV light source modules（1）Electricity Federation, it is characterised in that：The UV-LED curing modules further include
Cooling system（4）, solidification device control switch（22）And man-machine interface（3）, cooling system（4）, solidification device control switch（22）, people
Machine interface（3）Respectively and control system（2）Electricity Federation, solidification device control switch（22）With the solidification device Electricity Federation of original-pack printing machine.
2. UV-LED curing modules according to claim 1, it is characterised in that：The UV light source modules（1）Including light
Source driving system（171）With UV light sources（17）, control system（2）, light source drive system（171）With UV light sources（17）It goes here and there successively
Connection.
3. UV-LED curing modules according to claim 2, it is characterised in that：The UV light sources（17）For UV-LED
Lamp.
4. UV-LED curing modules according to claim 1, it is characterised in that：The man-machine interface（3）Including display
Screen（31）And voice announcer（32）.
5. UV-LED curing modules according to claim 1, it is characterised in that：The UV-LED curing modules further include
Temperature sensor（117）, temperature sensor（117）And control system（2）Electricity Federation, temperature sensor（117）Mounted on UV light sources
（17）Near.
6. UV-LED curing modules according to claim 1, it is characterised in that：The UV light source modules（1）It further includes
UV light source brackets（11）And heat radiating joint（14）, UV light source modules（1）Lower surface both ends are separately installed with left pillar（12）With
Right pillar（13）, heat radiating joint（14）Mounted on UV light source modules（1）Top, UV light sources（17）It is arranged on UV light source brackets
（11）Lower part, UV light source brackets（11）Inside setting cooling passage, the cooling passage are connected with radiator.
7. UV-LED curing modules according to claim 6, it is characterised in that：The cooling passage includes being arranged on
UV light source brackets（11）Internal feed pathway, return passage and it is arranged on UV light source brackets（11）Right-end openings are towards the right right side
Stomidium（116）, heat radiating joint（14）Upper setting import（15）And outlet（16）, right end hole（116）Connect feed pathway and circuit
Channel, import（15）, feed pathway, right end hole（116）, return passage, outlet（16）It penetrates through successively, right end hole（116）Opening
On right end cap is installed（19）.
8. UV-LED curing modules according to claim 7, it is characterised in that：The return passage leads to including front loop
Road（113）With rear return passage（114）, the feed pathway includes preceding feed pathway（111）With rear feed pathway（112）,
Preceding feed pathway（111）With rear feed pathway（112）It is separately positioned on UV light sources（17）Both sides, UV light source brackets（11）Left side
Setting connection front loop channel（113）With rear return passage（114）Intermediate loop channel（115）With connect before feed pathway
（111）With rear feed pathway（112）Left end hole, left end cap is installed on left end hole（18）.
9. UV-LED curing modules according to claim 6, it is characterised in that：The left pillar（12）With right pillar
（13）Upper setting connection fixture, UV light source modules（1）Pass through left pillar（12）With right pillar（13）It is fixed on printing machine（6）
On.
10. UV-LED curing modules according to claim 1, it is characterised in that：The UV light source modules（1）Make in pairs
With being separately mounted to printing machine（6）Upper and lower part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810200696.0A CN108146066A (en) | 2018-03-12 | 2018-03-12 | UV-LED curing modules |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810200696.0A CN108146066A (en) | 2018-03-12 | 2018-03-12 | UV-LED curing modules |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108146066A true CN108146066A (en) | 2018-06-12 |
Family
ID=62456618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810200696.0A Pending CN108146066A (en) | 2018-03-12 | 2018-03-12 | UV-LED curing modules |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108146066A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023167743A1 (en) * | 2022-03-04 | 2023-09-07 | Hewlett-Packard Development Company, L.P. | Light emitting diode circuitry |
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|---|---|---|---|---|
| US20040238111A1 (en) * | 2003-01-09 | 2004-12-02 | Con-Trol-Cure, Inc. | UV LED control loop and controller for UV curing |
| US20110277338A1 (en) * | 2010-05-13 | 2011-11-17 | Cosmex Co., Ltd. | UV LED Curing Apparatus with Improved Housing and Switch Controller |
| CN104589784A (en) * | 2014-12-29 | 2015-05-06 | 无锡网圣优威科技有限公司 | Screen printer with LED UV ink curing light sources |
| CN105216448A (en) * | 2015-11-11 | 2016-01-06 | 尹祖文 | A kind of printing machine solidification equipment |
| CN205185545U (en) * | 2015-12-15 | 2016-04-27 | 保定市特种光源电器厂 | A LED curing lamp case for UV printing |
| CN205818702U (en) * | 2016-05-26 | 2016-12-21 | 北京印刷学院 | Variable power drives label printing machine ultra-violet light-emitting solidification equipment |
| CN205842232U (en) * | 2016-06-02 | 2016-12-28 | 深圳市云硕灯业有限公司 | A kind of water-cooled UV solidification irradiation head of high intensity illumination |
| CN106739469A (en) * | 2017-02-07 | 2017-05-31 | 深圳市邦钰机电设备有限公司 | Non-pole light regulating printing machine and cure system based on LED UV |
| CN207984318U (en) * | 2018-03-12 | 2018-10-19 | 新东方油墨有限公司 | UV-LED curing modules |
-
2018
- 2018-03-12 CN CN201810200696.0A patent/CN108146066A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040238111A1 (en) * | 2003-01-09 | 2004-12-02 | Con-Trol-Cure, Inc. | UV LED control loop and controller for UV curing |
| US20110277338A1 (en) * | 2010-05-13 | 2011-11-17 | Cosmex Co., Ltd. | UV LED Curing Apparatus with Improved Housing and Switch Controller |
| CN104589784A (en) * | 2014-12-29 | 2015-05-06 | 无锡网圣优威科技有限公司 | Screen printer with LED UV ink curing light sources |
| CN105216448A (en) * | 2015-11-11 | 2016-01-06 | 尹祖文 | A kind of printing machine solidification equipment |
| CN205185545U (en) * | 2015-12-15 | 2016-04-27 | 保定市特种光源电器厂 | A LED curing lamp case for UV printing |
| CN205818702U (en) * | 2016-05-26 | 2016-12-21 | 北京印刷学院 | Variable power drives label printing machine ultra-violet light-emitting solidification equipment |
| CN205842232U (en) * | 2016-06-02 | 2016-12-28 | 深圳市云硕灯业有限公司 | A kind of water-cooled UV solidification irradiation head of high intensity illumination |
| CN106739469A (en) * | 2017-02-07 | 2017-05-31 | 深圳市邦钰机电设备有限公司 | Non-pole light regulating printing machine and cure system based on LED UV |
| CN207984318U (en) * | 2018-03-12 | 2018-10-19 | 新东方油墨有限公司 | UV-LED curing modules |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023167743A1 (en) * | 2022-03-04 | 2023-09-07 | Hewlett-Packard Development Company, L.P. | Light emitting diode circuitry |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180612 |
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