CN101148119A - Ink droplet detecting system - Google Patents

Ink droplet detecting system Download PDF

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Publication number
CN101148119A
CN101148119A CNA2006101522409A CN200610152240A CN101148119A CN 101148119 A CN101148119 A CN 101148119A CN A2006101522409 A CNA2006101522409 A CN A2006101522409A CN 200610152240 A CN200610152240 A CN 200610152240A CN 101148119 A CN101148119 A CN 101148119A
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China
Prior art keywords
ink droplet
laser beam
signal
detecting system
photodiode
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CNA2006101522409A
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Chinese (zh)
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CN101148119B (en
Inventor
翁仁修
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Hongfujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
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ICF Technology Co Ltd
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Abstract

The ink droplet detecting system includes one laser diode device, one photodiode, one light source, one CCD camera, one signal processing and display device, and one image processing and display device. The laser beam emitted by the laser diode device and penetrating the ink droplet is received by the photodiode to produce one electric signal, the ink droplet lightened by the light source makes the CCD camera obtain the image of the ink droplet, the signal processing and display device connected to the photodiode displays the electric signal the photodiode obtains, and image processing and display device connected to the CCD camera displays the image of the ink droplet.

Description

Ink droplet detecting system
Technical field
The present invention relates to a kind of ink droplet detecting system, relate in particular to a kind of ink droplet detecting system of ink discharge device.
Background technology
Liquid crystal indicator need utilize colored filter to carry out the colour demonstration usually.With red, green, blue three looks by certain pattern be uniformly coated on can form on the transparency carrier colored filter (Color Filter, CF).Traditional colored filter generally adopts decoration method (Dyeing Method), pigment dispersion method (PigmentDispersing Method) and the method manufacturings such as (Electrodepositing Method) of Galvanic deposit method.In recent years, ink-jet method (Ink Jet Method) is because its advantage such as to have step simple, and cost is lower, and beginning is used to make colored filter by people.
Ink-jet system mainly comprises at least one shower nozzle.Each shower nozzle has several nozzles.Shower nozzle can make the ink droplet of three kinds of colors of nozzle ejection red, green, blue, and ink droplet drops in and forms corresponding dyed layer on the transparency carrier.The state of each nozzle ejection ink droplet is by some characteristics determined of ink droplet, and these features comprise shape, frequency, size, the moment existence, directionality of ink droplet etc.Having understood the state of ink droplet just can adjust ink-jet system before use in real time.
Summary of the invention
In view of this, provide a kind of ink droplet detecting system of ink-jet system that can detect in fact for necessary.
A kind of ink droplet detecting system, it comprises: laser diode device, photodiode, light source, charge coupled device camera, signal processing and display unit and image are handled and display unit.The laser that laser diode device sends sees through ink droplet and produce the signal of telecommunication after photodiode receives.After ink droplet was illuminated by light source, charge coupled device camera obtained the image of ink droplet.The signal processing links to each other with photodiode with display unit, is used for the signal of telecommunication that the display light electric diode produces.The image processing links to each other with charge coupled device camera with display unit, is used to show the image of ink droplet.
With respect to prior art, described ink droplet detecting system is convenient to be monitored the performance of ink-jet system.
Description of drawings
Fig. 1 is the schematic diagram of a kind of ink droplet detecting system of providing of one embodiment of the invention.
Fig. 2 is the side view of ink droplet detecting system shown in Figure 1.
Fig. 3 A and Fig. 3 B are shower nozzle shown image and charts of ink droplet detecting system shown in Figure 1 when being in first state.
Fig. 4 A and Fig. 4 B are shower nozzle shown image and charts of ink droplet detecting system shown in Figure 1 when being in second state.
Fig. 5 A and Fig. 5 B are shower nozzle shown image and charts of ink droplet detecting system shown in Figure 1 when being in the third state.
Fig. 6 A and Fig. 6 B are shower nozzle shown image and charts of ink droplet detecting system shown in Figure 1 when being in the 4th state.
Fig. 7 is the schematic diagram of a kind of ink droplet detecting system of providing of another preferred embodiment of the present invention.
Fig. 8 A is shower nozzle shown voltage and time relation figure of ink droplet detecting system shown in Figure 7 when being in first state.
Fig. 8 B is shower nozzle shown voltage and time relation figure of ink droplet detecting system shown in Figure 7 when being in second state.
The specific embodiment
Below with reference to accompanying drawing this detection system further is elaborated.
See also Fig. 1 and Fig. 2, present embodiment provides a kind of ink droplet detecting system 100.This ink droplet detecting system 100 comprises laser diode device 20, photodiode 30, and signal is handled and display unit 32, light source 40, (Charge Coupled Device, CCD) video camera 50, and image is handled and display unit 52 for charge-coupled image sensor.Laser diode device 20 is oppositely arranged with photodiode 30.Photodiode 30 is handled with signal and is connected with an input of display unit 32.Light source 40 is oppositely arranged with ccd video camera 50, and this ccd video camera 50 is handled with described image and is connected with display unit 52.
Laser diode device 20 comprises laser diode 22 and lens module 24.Laser diode 22 can send laser beam 26, lens module 24 with laser beam 26 focus on shower nozzle 200 nozzles 202 under, therefore the laser beam of assembling 26 can see through the ink droplet 204 of nozzle 202 ejections.The maximum cross-section area when preferably, laser beam 26 is focused at focus is less than the maximum cross-section area of ink droplet 204.Light source 40 and photodiode 30 are positioned at the homonymy of shower nozzle 200.Laser beam 26 can be received and then produce the corresponding signal of telecommunication by photodiode 30 after passing ink droplet 204.In the present embodiment, but to handle with display unit 32 are oscillographs of the signal of telecommunication that produces of a display light electric diode 30 to signal.Certainly, the circuit board in conjunction with software and mould-number function switching signal also can be used as signal processing and display unit 32.
Light source 40 is preferably a light emitting diode.The ignition frequency of light source 40 is identical with the frequency of nozzle 202 ejection ink droplets, and can illuminate the ink droplet 204 that nozzle 202 sprays just at the light 42 that light source 40 sends, and ccd video camera just can obtain the image of each ink droplet 204 like this.Image is handled with display unit 52 and is comprised a monitor that is used to show ink droplet 204 images.
Can obtain the various features of the ink droplet 204 of nozzle 202 ejection by detection system 100, so just can judge and understand the ink-jet state of each nozzle 202.To specifically describe the working condition of detection system 100 below.
See also Fig. 1 to Fig. 3 B, motionless when shower nozzle 200 maintenances, the drops out from nozzles 202 of stretching sprays, and at this moment, the image of the ink droplet 204 that ccd video camera 50 can obtain to be illuminated, image are presented on the monitor of image processing and display unit 52, see also Fig. 3 A.Can observe the shape of ink droplet 204 from the image that is exaggerated.Meanwhile, laser beam 26 passes mobile ink droplet 204 and impinges upon on the photodiode 30.Photodiode 30 receives the optical signal of laser beam 26 and produces the corresponding signal of telecommunication.Signal is handled with display unit 32 signal of telecommunication is shown, can help to detect the situation of ink droplet 204 by these waveforms, sees also Fig. 3 B.Because ink droplet 204 can absorb a part of laser 26, and the amount of the different piece of ink droplet 204 absorption laser also is different.Therefore, handle the approximate shape that can be used for estimating ink droplet 204 with the shown waveform of display unit 32 at signal.The further feature of ink droplet 204, for example frequency, speed, and size also can handle with the existing capability and the method for display unit 32 and calculate by signal.Accordingly, when shower nozzle 200 moved, different nozzles 202 also can carry out relevant detection when moving on the light path of this detection system.
See also Fig. 4 A to Fig. 6 B, the image of the ink droplet of other shape and waveform also can detected system obtain and demonstration.Especially, see also Fig. 6 A to Fig. 6 B, the ink droplet D1 of skew and the ink droplet D2 of disappearance also can detected system 100 detect.
See also Fig. 7, ink droplet detecting system 700 is similar to the ink droplet detecting system 100 among first embodiment, difference is that detection system 700 further comprises a photodiode 90 similar with laser diode device 20 similar laser diode apparatus 80, one and photodiode 30.Laser diode device 80 is relative with photodiode 90, and photodiode 90 is handled with signal and linked to each other with another input of display unit 32.Laser diode device 80 can produce convergent laser light beam 82, and the focus of laser beam 82 overlaps with the focus of laser beam 26.
Detection system 700 not only can realize the function of detection system 100, can also detect the directionality of movable shower nozzle 400.See also Fig. 7 and Fig. 8 A, when shower nozzle 400 when the direction of arrow moves, if the directionality of ink droplet is undesirable, during such as situations such as generation skews, this moment, ink droplet Dm and Dm+1 can not stop laser beam 26 and laser beam 82 simultaneously, and it is different with the signal of laser beam 82 about laser beam 26 that photodiode 30 and photodiode 90 receive.Therefore, signal handle with display unit 32 on shown waveform also different, at this moment can further check shower nozzle 400 and adjust by comparison signal.See also Fig. 7 and Fig. 8 B, when the directionality of ink droplet is desirable, this moment, ink droplet Dn and Dn+1 can stop laser beam 26 and laser beam 82 simultaneously, and the signal about laser beam 26 and laser beam 82 that photodiode 30 and photodiode 90 receive is basic identical.
With respect to prior art, described ink droplet detecting system is convenient to be monitored the performance of ink-jet system.
In addition, those skilled in the art can also do other variation in spirit of the present invention, and certainly, the variation that these are done according to spirit of the present invention all should be included in the present invention's scope required for protection.

Claims (14)

1. an ink droplet detecting system is characterized in that, comprising:
First laser diode device is used to send first laser beam and passes ink droplet;
First photodiode is used to receive first laser beam that passes ink droplet and produces corresponding first signal of telecommunication;
Light source is used to produce the light of illumination ink droplet;
Charge coupled device camera, the image that is used to receive the light of illumination ink droplet and obtains ink droplet;
Signal is handled and display system, and this signal processing links to each other with photodiode with display unit and is used to show first signal of telecommunication of first photodiode generation;
Image is handled and display unit, and this image processing links to each other with charge coupled device camera with display unit and is used to show the image of ink droplet.
2. ink droplet detecting system as claimed in claim 1 is characterized in that: described first laser diode device comprises first laser diode and first lens module that is used for first laser beam is focused on first focus that are used to send laser beam.
3. ink droplet detecting system as claimed in claim 2 is characterized in that: described signal is handled and display unit is an oscillograph.
4. ink droplet detecting system as claimed in claim 3 is characterized in that: described oscillograph comprises two inputs, and one of them input links to each other with first photodiode.
5. ink droplet detecting system as claimed in claim 4 further comprises:
Second laser diode device, this second laser diode device sends second laser beam of convergence and passes ink droplet;
Second photodiode, be used to receive second laser beam that passes ink droplet and produce corresponding second signal of telecommunication, second laser beam and first laser beam intersect at first focus, this oscillographic another input links to each other with this second photodiode, and this oscillograph is used to show this second signal of telecommunication of this second photodiode generation.
6. ink droplet detecting system as claimed in claim 5 is characterized in that: described second laser diode device comprises second laser diode and second lens module that is used for second laser beam is focused on first focus that are used to send laser beam.
7. ink droplet detecting system as claimed in claim 1 is characterized in that: it is one to combine the circuit board of software and mould-number function switching signal that described signal is handled with display unit.
8. ink droplet detecting system as claimed in claim 1 is characterized in that: described light source is a light emitting diode.
9. ink droplet detecting system as claimed in claim 1 is characterized in that: described signal is handled and display unit is an oscillograph.
10. an ink droplet detecting system is characterized in that, comprising:
Laser diode device is used to send the laser beam that converges at focus, and this laser beam passes ink droplet; Lighting device is used to produce the light that illuminates ink droplet;
Signal is handled and display unit, and this signal processing is relative with described laser diode with display unit, and this signal is handled with display unit and is used to receive the laser beam that passes ink droplet, and shows by the laser beam electrical signal converted;
Image is handled and display unit, is used to show the image that is illuminated ink droplet.
11. ink droplet detecting system as claimed in claim 10 is characterized in that: described laser diode device comprises that a laser diode and that is used to send laser beam is used for laser beam is focused on the lens module of focus.
12. ink droplet detecting system as claimed in claim 10, it is characterized in that: described image is handled with display unit and is comprised that one is used to obtain the video camera of the image that is illuminated ink droplet, and an image processing and a display device that links to each other with this video camera, this image is handled and display device is used to show the image that is illuminated ink droplet.
13. ink droplet detecting system as claimed in claim 10, it is characterized in that: described signal is handled with display unit and is comprised that a photodiode and a signal are handled and the demonstration display device, this photodiode is used for receiving the laser beam that passes ink droplet and produces the described signal of telecommunication, and this signal processing links to each other with photodiode with display device and is used to show the described signal of telecommunication.
14. ink droplet detecting system as claimed in claim 13 further comprises:
Laser diode device is used to send the laser beam that converges at focus;
Handle the photodiode that links to each other with display unit with signal, be used to receive laser beam and produce the signal of telecommunication.
CN2006101522409A 2006-09-20 2006-09-20 Ink droplet detecting system Expired - Fee Related CN101148119B (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103702834A (en) * 2011-05-27 2014-04-02 惠普发展公司，有限责任合伙企业 Drop detector
CN104936789A (en) * 2013-01-23 2015-09-23 惠普发展公司，有限责任合伙企业 Testing printhead
CN108562762A (en) * 2018-01-26 2018-09-21 中国科学院大气物理研究所 A kind of sea spray measuring device and method based on twin-line array
CN108885183A (en) * 2016-04-29 2018-11-23 惠普发展公司，有限责任合伙企业 drop detector
CN109070598A (en) * 2016-07-19 2018-12-21 惠普发展公司，有限责任合伙企业 Print head monitors system and method
CN112265381A (en) * 2020-11-02 2021-01-26 浙江海印数码科技有限公司 Test system and test method for testing performance of digital printing jet printing ink
CN115817016A (en) * 2023-01-30 2023-03-21 苏州希盟科技股份有限公司 Ink-jet printing state detection device and method
US11828905B2 (en) 2018-01-26 2023-11-28 Institute Of Atmospheric Physics, Chinese Academy Of Sciences Dual line diode array device and measurement method and measurement device for particle velocity

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59174742A (en) * 1983-03-25 1984-10-03 Agency Of Ind Science & Technol Method and apparatus for dividing and sorting fine particle
US6357849B2 (en) * 1998-11-12 2002-03-19 Seiko Epson Corporation Inkjet recording apparatus
CN100377877C (en) * 2003-12-02 2008-04-02 铼宝科技股份有限公司 Apparatus for ink-jet printing for organic luminous panel

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103702834B (en) * 2011-05-27 2016-12-21 惠普发展公司，有限责任合伙企业 Drop detector
CN103702834A (en) * 2011-05-27 2014-04-02 惠普发展公司，有限责任合伙企业 Drop detector
US9259925B2 (en) 2011-05-27 2016-02-16 Hewlett-Packard Development Company, L.P. Drop detector
US9776396B2 (en) 2013-01-23 2017-10-03 Hewlett-Packard Development Company, L.P. Testing a printhead
US9527276B2 (en) 2013-01-23 2016-12-27 Hewlett-Packard Development Company, L.P. Testing a printhead
US9751300B2 (en) 2013-01-23 2017-09-05 Hewlett-Packard Development Company, L.P. Testing a printhead
CN104936789A (en) * 2013-01-23 2015-09-23 惠普发展公司，有限责任合伙企业 Testing printhead
CN108885183A (en) * 2016-04-29 2018-11-23 惠普发展公司，有限责任合伙企业 drop detector
CN109070598A (en) * 2016-07-19 2018-12-21 惠普发展公司，有限责任合伙企业 Print head monitors system and method
CN108562762A (en) * 2018-01-26 2018-09-21 中国科学院大气物理研究所 A kind of sea spray measuring device and method based on twin-line array
US11828905B2 (en) 2018-01-26 2023-11-28 Institute Of Atmospheric Physics, Chinese Academy Of Sciences Dual line diode array device and measurement method and measurement device for particle velocity
CN112265381A (en) * 2020-11-02 2021-01-26 浙江海印数码科技有限公司 Test system and test method for testing performance of digital printing jet printing ink
CN115817016A (en) * 2023-01-30 2023-03-21 苏州希盟科技股份有限公司 Ink-jet printing state detection device and method

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