CN110254051A - A kind of the ink ejecting state detection system and detection method of ink gun - Google Patents
A kind of the ink ejecting state detection system and detection method of ink gun Download PDFInfo
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- CN110254051A CN110254051A CN201910547073.5A CN201910547073A CN110254051A CN 110254051 A CN110254051 A CN 110254051A CN 201910547073 A CN201910547073 A CN 201910547073A CN 110254051 A CN110254051 A CN 110254051A
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- 238000001514 detection method Methods 0.000 title claims abstract description 103
- 230000003287 optical effect Effects 0.000 claims abstract description 196
- 239000007921 spray Substances 0.000 claims abstract description 36
- 238000010521 absorption reaction Methods 0.000 claims abstract description 18
- 230000002159 abnormal effect Effects 0.000 claims description 19
- 238000005507 spraying Methods 0.000 claims description 2
- 238000007641 inkjet printing Methods 0.000 abstract description 20
- 238000000034 method Methods 0.000 abstract description 18
- 239000000976 ink Substances 0.000 description 287
- 239000000758 substrate Substances 0.000 description 13
- 238000012544 monitoring process Methods 0.000 description 5
- 238000007639 printing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
- B41J2/16579—Detection means therefor, e.g. for nozzle clogging
-
- 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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- Ink Jet (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
This application discloses the ink ejecting state detection system and detection method of a kind of ink gun, the detection system includes optical detection apparatus and control device；The optical detection apparatus is correspondingly arranged with the ink gun, for when the ink gun sprays ink droplet, the light detecting signal of preset strength is issued to the ink droplet, and the optical feedback signal that the light detecting signal is formed after ink droplet absorption is received, and the optical feedback signal is sent to the control device；The control device is electrically connected with the optical detection apparatus, for detecting the ink ejecting state of the ink gun according to the optical feedback signal.The application can be monitored the ink ejecting state of ink gun in entire ink jet printing process, improve the working efficiency and print quality of ink gun.
Description
Technical field
This application involves inkjet printing technology field more particularly to the ink ejecting state detection systems and detection of a kind of ink gun
Method.
Background technique
Currently, the development trend of OLED (Organic Light-Emitting Diode, Organic Light Emitting Diode) towards
The direction of inkjet printing (Ink-Jet Printing, IJP) carries out, and the nozzle of ink jet printing device is in work a very long time
Probably due to the reasons such as ink road pollution, ink deposition, dust, steam cause condition of nozzles abnormal, condition of nozzles will lead to extremely
Ink ejection amount and jetting rate are abnormal to influence print quality；Lack corresponding monitoring device in ink jet printing process to detect
The ink ejecting state of nozzle is unable to get feedback and in time amendment for the ink ejecting state of nozzle, causes the different of print quality
Often.
Summary of the invention
The embodiment of the present application provides the ink ejecting state detection system and detection method of a kind of ink gun, to solve inkjet printing
Feedback is unable to get for the ink ejecting state of ink gun in the process and amendment in time causes the technical problem of print quality exception.
The embodiment of the present application provides a kind of ink ejecting state detection system of ink gun, including optical detection apparatus and control
Device；
The optical detection apparatus is correspondingly arranged with the ink gun, is used for when the ink gun sprays ink droplet, to institute
It states ink droplet and issues the light detecting signal of preset strength, and it is anti-to receive the light that the light detecting signal is formed after ink droplet absorption
Feedback signal, and the optical feedback signal is sent to the control device；
The control device is electrically connected with the optical detection apparatus, for detecting the spray according to the optical feedback signal
The ink ejecting state of black head.
Optionally, the ink ejecting state includes ink ejection amount；The control device is specifically used for obtaining the optical feedback signal
Intensity, calculate the strength difference between the intensity of the optical feedback signal and preset standard intensity, and judge the intensity difference
Whether value is in the error range of permission, if so, determining that the ink ejection amount of the ink gun is normal, if it is not, then determining the spray
The ink ejection amount of black head is abnormal.
Optionally, the ink ejecting state includes jetting rate；The control device is specifically used for obtaining the smooth feedback letter
Number reception duration, calculate the optical feedback signal reception duration and preset standard receive duration between time difference, and
The time difference is judged whether in the error range of permission, if so, determine that the jetting rate of the ink gun is normal, if
It is no, then determine that the jetting rate of the ink gun is abnormal；The reception duration includes that the light feedback is ejected to from the ink droplet
Signal is by the received duration of the optical detection apparatus.
Optionally, the optical detection apparatus includes:
Light emitting devices positioned at the side of the ink gun, and is electrically connected with the control device, in the ink-jet
When head sprays ink droplet, Xiang Suoshu ink droplet issues the light detecting signal of preset strength；
Optical receiver apparatus is oppositely arranged positioned at the other side of the ink gun with the light emitting devices, and with the control
Device electrical connection processed, the optical feedback signal formed after ink droplet absorption for receiving the light detecting signal, and will be described
Optical feedback signal is sent to the control device.
Optionally, the ink gun includes multiple nozzles of single-row arrangement；The light emitting devices include with it is the multiple
Multiple launch holes, the ink droplet that each launch hole is used to spray to corresponding nozzle issue light detecting signal to nozzle correspondingly；
The optical receiver apparatus includes and the multiple launch hole multiple receiving transducers correspondingly, each receiving transducer
The optical feedback signal formed after ink droplet absorption for receiving the light detecting signal that corresponding launch hole issues；
The default ink-jet trajectory of line and corresponding nozzle between each launch hole and corresponding receiving transducer intersects.
The embodiment of the present application also provides a kind of ink ejecting state detection method of ink gun, the detection method is applied to upper
State in the ink ejecting state detection system of ink gun, the detection system include optical detection apparatus and with the optical detection apparatus
The control device of electrical connection；
It is described that detection method includes the following steps:
The optical detection apparatus issues the light detection of preset strength when the ink gun sprays ink droplet to the ink droplet
Signal, and receive light detecting signal optical feedback signal for being formed after ink droplet absorption, and by the optical feedback signal
It is sent to the control device；
The control device detects the ink ejecting state of the ink gun according to the optical feedback signal.
Optionally, the ink ejecting state includes ink ejection amount；It is described that the ink gun is detected according to the optical feedback signal
Ink ejecting state, comprising the following steps:
Obtain the intensity and preset standard intensity of the optical feedback signal；
Calculate the strength difference between the intensity of the optical feedback signal and the preset standard intensity；
Judge the strength difference whether in the error range of permission:
If so, determining that the ink ejection amount of the ink gun is normal；
If it is not, then determining that the ink ejection amount of the ink gun is abnormal.
Optionally, the ink ejecting state includes jetting rate；It is described that the ink gun is detected according to the optical feedback signal
Ink ejecting state, comprising the following steps:
The reception duration and preset standard for obtaining the optical feedback signal receive duration；
The reception duration and the preset standard that calculate the optical feedback signal receive the time difference between duration；
Judge the time difference whether in the error range of permission；
If so, determining that the jetting rate of the ink gun is normal；
If it is not, then determining that the jetting rate of the ink gun is abnormal.
Optionally, the control device is also electrically connected with the ink gun；The detection method is further comprising the steps of:
The control device obtains the ink-jet of the ink ejecting state exception when detecting the ink gun of ink ejecting state exception
The location information of head, and corresponding ink gun is corrected and adjusted according to the positional information.
Optionally, the optical detection apparatus includes light emitting devices and optical receiver apparatus, the light emitting devices and light
Reception device is oppositely arranged on the two sides of the ink gun, and is electrically connected with the control device；
The optical detection apparatus issues the light detection of preset strength when the ink gun sprays ink droplet to the ink droplet
Signal, and receive light detecting signal optical feedback signal for being formed after ink droplet absorption, and by the optical feedback signal
It is sent to the control device, comprising the following steps:
The light emitting devices issues the light detection letter of preset strength when the ink gun sprays ink droplet to the ink droplet
Number；
The optical receiver apparatus receives the optical feedback signal that the light detecting signal is formed after ink droplet absorption, and will
The optical feedback signal is sent to the control device.
The process of the application having the beneficial effect that in inkjet printing, corresponding ink gun are arranged optical detection apparatus, pass through light
It learns the ink droplet that detection device is sprayed to ink gun and issues the light detecting signal of preset strength, and receive light detecting signal and inhaled through ink droplet
Optical feedback signal after receipts, and optical feedback signal is sent to control device, allow control device in the mistake of inkjet printing
The corresponding optical feedback signal of different ink droplets is obtained in journey in real time, and is supervised according to ink ejecting state of the optical feedback signal to ink gun
It surveys, so that the ink gun in time to ink ejecting state exception is corrected and adjusted, improves the working efficiency and printing matter of ink gun
Amount.
Detailed description of the invention
With reference to the accompanying drawing, it is described in detail by the specific embodiment to the application, the technical solution of the application will be made
And other beneficial effects are apparent.
Fig. 1 is a kind of ink ejecting state detection system of ink gun provided by the embodiments of the present application；
Fig. 2 is the ink ejecting state detection system of another ink gun provided by the embodiments of the present application；
Fig. 3 is the bottom surface structure schematic diagram of ink gun provided by the embodiments of the present application；
Fig. 4 is the side structure schematic diagram of optical receiver apparatus provided by the embodiments of the present application；
Fig. 5 is a kind of ink ejecting state detection method flow diagram of ink gun provided by the embodiments of the present application；
Fig. 6 is a kind of zero correction schematic diagram of the ink ejecting state detection system of ink gun provided by the embodiments of the present application.
Specific embodiment
Specific structure and function details disclosed herein are only representative, and are for describing showing for the application
The purpose of example property embodiment.But the application can be implemented by many alternative forms, and be not interpreted as
It is limited only by the embodiments set forth herein.
In the description of the present application, it is to be understood that term " center ", " transverse direction ", "upper", "lower", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom", "inner", "outside" be orientation based on the figure or
Positional relationship is merely for convenience of description the application and simplifies description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.In addition, art
Language " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicate institute
The quantity of the technical characteristic of instruction." first " is defined as a result, the feature of " second " can explicitly or implicitly include one
Or more this feature.In the description of the present application, unless otherwise indicated, the meaning of " plurality " is two or more.
In addition, term " includes " and its any deformation, it is intended that cover and non-exclusive include.
In the description of the present application, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in application.
Term used herein above is not intended to limit exemplary embodiment just for the sake of description specific embodiment.Unless
Context clearly refers else, otherwise singular used herein above "one", " one " also attempt to include plural number.Also answer
When understanding, term " includes " and/or "comprising" used herein above provide stated feature, integer, step, operation,
The presence of device and/or component, and do not preclude the presence or addition of other one or more features, integer, step, operation, device,
Component and/or combination thereof.
The application is described further with reference to the accompanying drawings and examples.
As shown in Figures 1 to 4, the embodiment of the present application provides a kind of ink ejecting state detection system 1 of ink gun, ink-jet shape
State detection system 1 includes optical detection apparatus 2 and control device 3；Optical detection apparatus 2 is correspondingly arranged with ink gun 4, is used for
When ink gun 4 sprays ink droplet 5, the light detecting signal 6 of preset strength is issued to ink droplet 5, and receives light detecting signal 6 through ink droplet 5
The optical feedback signal 7 formed after absorption, and optical feedback signal 7 is sent to control device 3；Control device 3 and optical detection fill
2 electrical connections are set, for detecting the ink ejecting state of ink gun 4 according to optical feedback signal 7.
Specifically, in ink jet printing process, when the position of ink gun 4 changes, the position of optical detection apparatus 2
It can occur to change accordingly, optical detection apparatus 2 remains corresponding with the position of ink gun 4；And optical detection apparatus 2 continues
Fixation position of the ground on the default ink-jet trajectory 13 of ink gun 4 issues light detecting signal 6, so that every drop that ink gun 4 sprays
It can be irradiated to by light detecting signal 6 when falling on the fixation position under ink droplet 5；Light detecting signal 6 includes laser detection signal
Or ray detection signal.
In the present embodiment, in the process of inkjet printing, corresponding ink gun 4 is arranged optical detection apparatus 2, passes through optical detection
The ink droplet 5 that device 2 is sprayed to ink gun 4 issues the light detecting signal 6 of preset strength, and receives light detecting signal 6 and inhale through ink droplet 5
The optical feedback signal 7 formed after receipts, and optical feedback signal 7 is sent to control device 3, therefore control device 3 can be in ink-jet
Different ink droplets 5 corresponding optical feedback signal 7 (intensity and light feedback including optical feedback signal 7 are obtained in print procedure in real time
The reception duration of signal 7), and whether control device 3 can determine corresponding ink gun 4 extremely according to optical feedback signal 7
Whether ink ejecting state (including ink ejection amount and jetting rate) is abnormal, so that the ink gun 4 in time to ink ejecting state exception is corrected
The printing effect and print quality of ink gun are improved with adjustment.
The present embodiment is optional, and ink ejecting state includes ink ejection amount；Control device 3 is specifically used for obtaining optical feedback signal 7
Intensity calculates the strength difference between the intensity and preset standard intensity of optical feedback signal 7, and judges whether strength difference is being permitted
Perhaps in error range, if so, determining that the ink ejection amount of ink gun 4 is normal, if it is not, then determining that the ink ejection amount of ink gun 4 is abnormal.
Specifically, optical detection apparatus 2 will detect that the intensity of optical feedback signal 7 while receiving optical feedback signal 7,
And the intensity of optical feedback signal 7 is sent to control device 3.Preset standard intensity is existed by identical optical detection apparatus 2
The normal standard ink jet inks head of ink ejecting state is carried out under identical measuring condition detected.
In the present embodiment, when passing through ink droplet 5 due to the light detecting signal 6 of preset strength, ink droplet 5 can absorb some strength
Light detecting signal 6 keeps the intensity for the optical feedback signal 7 to be formed smaller than the preset strength of light detecting signal 6, specifically, ink droplet 5
Volume is bigger, and the intensity of the light detecting signal 6 sponged is bigger, so that the preset strength of light detecting signal 6 and corresponding light are anti-
Strength difference between the intensity of feedback signal 7 is directly proportional to the volume size of corresponding ink droplet 5, therefore control device 3 can be whole
Whether the ink ejection amount for monitoring corresponding ink gun 4 in a ink jet printing process according to the intensity size of optical feedback signal 7 is normal.
The present embodiment is optional, and ink ejecting state further includes jetting rate；Control device 3 specifically is also used to obtain light feedback letter
Numbers 7 reception duration calculates the time difference between the receptions duration of optical feedback signal 7 and preset standard reception duration, and sentences
Whether disconnected time difference is in the error range of permission, if so, determining that the jetting rate of ink gun 4 is normal, if it is not, then determining
The jetting rate of ink gun 4 is abnormal.
Specifically, optical detection apparatus 2 can also calculate connecing for optical feedback signal 7 while receiving optical feedback signal 7
Time receiving is long, and the reception duration of optical feedback signal 7 is sent to control device 3.The reception duration of optical feedback signal 7 includes from ink
Drop 5 is ejected to optical feedback signal 7 corresponding with ink droplet 5 by the duration between the reception of optical detection apparatus 2.When preset standard receives
Long is also to be examined under identical measuring condition to the normal standard ink jet inks head of ink ejecting state by identical optical detection apparatus 2
Survey acquisition.
In the present embodiment, the rate that ink gun 4 sprays ink droplet 5 is faster, and the reception duration of corresponding optical feedback signal 7 is got over
Short, on the contrary, the rate that ink gun 4 sprays ink droplet 5 is slower, the reception duration of corresponding optical feedback signal 7 is longer, so that ink gun
The rate of 4 ejection ink droplets 5 is inversely proportional with the reception duration of corresponding optical feedback signal 7, therefore control device 3 can be in entire ink-jet
Whether the jetting rate for monitoring corresponding ink gun 4 in print procedure according to the reception duration of optical feedback signal 7 is normal.
The present embodiment is optional, and optical detection apparatus 2 specifically includes light emitting devices 8 and optical receiver apparatus 9；Wherein, light
Emitter 8 is located at the side of ink gun 4, and is electrically connected with control device 3, is used for when ink gun 4 sprays ink droplet 5, Xiang Mo
Drop 5 issues the light detecting signal 6 of preset strength；Optical receiver apparatus 9, positioned at the other side of ink gun 4, with 8 phase of light emitting devices
It is electrically connected to setting, and with control device 3, the optical feedback signal 7 formed after the absorption of ink droplet 5 for receiving light detecting signal 6,
And optical feedback signal 7 is sent to control device 3.
Specifically, ink gun 4 is used to carry out inkjet printing, ink gun 4 to the substrate 14 being fixed on inkjet printing board
Positioned at the top of substrate 14, and the default ink-jet trajectory 13 of ink gun 4 is corresponding with the position to be printed of substrate 14；Light emitting devices
8 and optical receiver apparatus 9 be located at the two sides of substrate 14, and be located at the two sides of ink gun 4, light emitting devices 8 and light-receiving dress
9 are set to be arranged on board and can accordingly move on inkjet printing board with the movement of ink gun 4.
In the embodiment of the present application, as described in Figure 1, the ink that light emitting devices 8 can be sprayed to ink gun 4 in the horizontal direction
Drop 5 issues light detecting signal 6, and light detecting signal 6 forms optical feedback signal 7 after ink droplet 5 in the horizontal direction and connect by light
Receiving apparatus 9 receives, wherein part during by ink droplet 5 of light detecting signal 6 is absorbed and reflected by ink droplet 5, another part
Optical feedback signal 7 is formd through ink droplet 5；As described in Figure 2, light emitting devices 8 can also be to the default ink-jet trajectory of ink gun 4
13 issue light detecting signal 6 with the position that substrate 14 intersects vertically, when the ink droplet 5 that ink gun 4 sprays drips to the 14 upper time of substrate
Detection signal 6 is irradiated to this ink droplet 5, and the optical feedback signal 7 formed under the reflex of ink droplet 5 is received by optical receiver apparatus 9,
Wherein, part during by ink droplet 5 of light detecting signal 6 is absorbed by ink droplet 5, and another part is reflected to form by ink droplet 5
Optical feedback signal 7；The intensity for the optical feedback signal 7 that above two mode is formed is all related with the volume size of ink droplet 5, ink droplet 5
Volume it is bigger, the intensity of the light detecting signal 6 sponged is bigger, and the intensity of the optical feedback signal 7 of formation is smaller therefore above-mentioned
Two ways can monitor the ink ejecting state of ink gun 4, and certainly, the sending direction of light detecting signal 6 is herein with no restrictions.
The present embodiment is optional, as shown in figure 3, ink gun 4 includes the (spray shown in figure of multiple nozzles 10 of single-row arrangement
Unrounded number only makees example, does not represent particular number)；As depicted in figs. 1 and 2, light emitting devices 8 include with multiple nozzles 10 one by one
Corresponding multiple launch holes 11, the ink droplet 5 that each launch hole 11 is used to spray to corresponding nozzle 10 issue light detecting signal 6；
As shown in figure 4, optical receiver apparatus 9 includes (shown in figure to connect with the one-to-one multiple receiving transducers 12 of multiple launch holes 11
Receive probe quantity and only make example, do not represent particular number), each receiving transducer 12 is used to receive what corresponding launch hole 11 issued
The optical feedback signal 7 that light detecting signal 6 is formed after the absorption of ink droplet 5；Between each launch hole 11 and corresponding receiving transducer 12
Line and corresponding nozzle 10 default ink-jet trajectory 13 intersect.
In the embodiment of the present application, each nozzle 10 corresponds to a launch hole 11 and receiving transducer 12, so that each is sprayed
The ink ejecting state of mouth 10 can be detected, and can more accurately find the position of ink ejecting state exception, convenient in time to ink-jet
The ink jetting position of abnormal state is modified and adjusts, and is conducive to improve print quality.
The embodiment of the present application also provides a kind of ink ejecting state detection method of ink gun, detection method is applied to above-mentioned spray
In the ink ejecting state detection system of black head, as depicted in figs. 1 and 2, detection system 1 includes optical detection apparatus 2 and examines with optics
Survey the control device 3 that device 2 is electrically connected；As shown in figure 5, detection method includes the following steps:
S501: optical detection apparatus issues the light detecting signal of preset strength when ink gun sprays ink droplet to ink droplet, and
The optical feedback signal that light detecting signal is formed after ink droplet absorbs is received, and optical feedback signal is sent to control device；
S502: control device detects the ink ejecting state of ink gun according to optical feedback signal.
In the present embodiment, in the process of inkjet printing, issued by the ink droplet 5 that optical detection apparatus 2 is sprayed to ink gun 4
The light detecting signal 6 of preset strength, and optical feedback signal 7 of the light detecting signal 6 after the absorption of ink droplet 5 is received, and light is fed back
Signal 7 is sent to control device 3, therefore it is right to obtain different ink droplets 5 in real time in ink jet printing process by control device 3
The optical feedback signal 7 (the reception duration of intensity and optical feedback signal 7 including optical feedback signal 7) answered, and control device 3 can
According to the whether abnormal ink ejecting state (including ink ejection amount and jetting rate) to determine corresponding ink gun 4 of optical feedback signal 7
It is whether abnormal, and amendment and adjustment are done to the ink gun 4 of ink ejecting state exception to improve the printing effect of inkjet print head in time
And print quality.
The present embodiment is optional, and ink ejecting state includes ink ejection amount；In step 502, ink gun is detected according to optical feedback signal 7
4 ink ejecting state, comprising the following steps:
Obtain the intensity and preset standard intensity of optical feedback signal 7；
Calculate the strength difference between the intensity and preset standard intensity of optical feedback signal 7；
Judge strength difference whether in the error range of permission:
If so, determining that the ink ejection amount of ink gun 4 is normal；
If it is not, then determining that the ink ejection amount of ink gun 4 is abnormal.
Specifically, optical detection apparatus 2 will detect that the intensity of optical feedback signal 7 while receiving optical feedback signal 7,
And the intensity of optical feedback signal 7 is sent to control device 3.Preset standard intensity is existed by identical optical detection apparatus 2
The normal standard ink jet inks head of ink ejecting state is carried out under identical measuring condition detected.
In the present embodiment, when passing through ink droplet 5 due to the light detecting signal 6 of preset strength, ink droplet 5 can absorb some strength
Light detecting signal 6 keeps the intensity for the optical feedback signal 7 to be formed smaller than the preset strength of light detecting signal 6, specifically, ink droplet 5
Volume is bigger, and the intensity of the light detecting signal 6 sponged is bigger, so that the preset strength of light detecting signal 6 and corresponding light are anti-
Strength difference between the intensity of feedback signal 7 is directly proportional to the volume size of corresponding ink droplet 5, therefore control device 3 can be whole
Whether the ink ejection amount for monitoring corresponding ink gun 4 in a ink jet printing process according to the intensity size of optical feedback signal 7 is normal.
The present embodiment is optional, and ink ejecting state further includes jetting rate；In step 502, is detected and sprayed according to optical feedback signal 7
The ink ejecting state of black head 4, comprising the following steps:
The reception duration and preset standard for obtaining optical feedback signal 7 receive duration；
The reception duration and preset standard that calculate optical feedback signal 7 receive the time difference between duration；
Judge time difference whether in the error range of permission；
If so, determining that the jetting rate of ink gun 4 is normal；
If it is not, then determining that the jetting rate of ink gun 4 is abnormal.
Specifically, optical detection apparatus 2 can also calculate connecing for optical feedback signal 7 while receiving optical feedback signal 7
Time receiving is long, and the reception duration of optical feedback signal 7 is sent to control device 3.The reception duration of optical feedback signal 7 includes from ink
Drop 5 is ejected to the duration between at the time of optical feedback signal 7 corresponding with ink droplet 5 is received by optical detection apparatus 2.Pre- bidding
Standard receive duration be also by identical optical detection apparatus 2 under identical measuring condition to the normal standard ink jet inks of ink ejecting state
Head carries out detected.
In the present embodiment, the rate that ink gun 4 sprays ink droplet 5 is faster, and the reception duration of corresponding optical feedback signal 7 is got over
Short, on the contrary, the rate that ink gun 4 sprays ink droplet 5 is slower, the reception duration of corresponding optical feedback signal 7 is longer, so that ink gun
The rate of 4 ejection ink droplets 5 is inversely proportional with the reception duration of corresponding optical feedback signal 7, therefore control device 3 can be in entire ink-jet
Whether the jetting rate for monitoring corresponding ink gun 4 in print procedure according to the reception duration of optical feedback signal 7 is normal.
The present embodiment is optional, and control device 3 is also electrically connected with ink gun 4；Detection method is further comprising the steps of:
Control device 3 detects the ink gun 4 of ink ejecting state exception according to optical feedback signal 7, and it is different to obtain ink ejecting state
The location information of normal ink gun 4, and corresponding ink gun 4 is adjusted according to location information.
In the present embodiment, the ink ejecting state of 3 real-time monitoring ink gun 4 of control device, when the spray of discovery ink ejecting state exception
The location information of the ink gun 4 of ink ejecting state exception can be obtained when black head 4 in time and corresponding ink gun 4 is corrected and adjusted
It is whole, to improve print quality.
Specifically, as shown in figure 3, multiple nozzles 10 of the ink gun 4 including single-row arrangement, are sprayed simultaneously by multiple nozzles 10
For ink droplet 5 to improve printing effect, optical detection apparatus 2 issues light detecting signal 6 to the ink droplet 5 that each nozzle 10 sprays out,
And corresponding optical feedback signal 7 is received, therefore the ink ejecting state of each nozzle 10 can be monitored in real time in control device 3, works as ink-jet
State can accurately find 10 position of nozzle of ink ejecting state exception when occurring abnormal, and close corresponding nozzle 10 in time,
The then normal work of other nozzles 10, the corresponding position to be printed of pent nozzle 10 can pass through the spray for adjusting other positions
Mouth 10 completes printing, guarantees whole print quality.
The present embodiment is optional, and as depicted in figs. 1 and 2, optical detection apparatus 2 includes that light emitting devices 8 and light-receiving fill
9 are set, light emitting devices 8 and optical receiver apparatus 9 are oppositely arranged on the two sides of ink gun 4, and are electrically connected with control device 3；Step
Rapid 502 specifically includes the following steps:
Light emitting devices 8 issues the light detecting signal 6 of preset strength when ink gun 4 sprays ink droplet 5 to ink droplet 5；
Optical receiver apparatus 9 receives the optical feedback signal 7 that is formed after the absorption of ink droplet 5 of light detecting signal 6, and by light feedback letter
Numbers 7 are sent to control device 3.
In the embodiment of the present application, as described in Figure 1, the ink that light emitting devices 8 can be sprayed to ink gun 4 in the horizontal direction
Drop 5 issues light detecting signal 6, and light detecting signal 6 forms optical feedback signal 7 after ink droplet 5 in the horizontal direction and connect by light
Receiving apparatus 9 receives, wherein part during by ink droplet 5 of light detecting signal 6 is absorbed and reflected by ink droplet 5, another part
Optical feedback signal 7 is formd through ink droplet 5；As described in Figure 2, light emitting devices 8 can also be to the default ink-jet trajectory of ink gun 4
13 issue light detecting signal 6 with the position that substrate 14 intersects vertically, when the ink droplet 5 that ink gun 4 sprays drips to the 14 upper time of substrate
Detection signal 6 is irradiated to this ink droplet 5, and the optical feedback signal 7 formed under the reflex of ink droplet 5 is received by optical receiver apparatus 9,
Wherein, part during by ink droplet 5 of light detecting signal 6 is absorbed by ink droplet 5, and another part is reflected to form by ink droplet 5
Optical feedback signal 7；The intensity for the optical feedback signal 7 that above two mode is formed is all related with the volume size of ink droplet 5, ink droplet 5
Volume it is bigger, the intensity of the light detecting signal 6 sponged is bigger, and the intensity of the optical feedback signal 7 of formation is smaller therefore above-mentioned
Two ways can monitor the ink ejecting state of ink gun 4, and certainly, the sending direction of light detecting signal 6 is herein with no restrictions.
The present embodiment is optional, as shown in fig. 6, when light emitting devices 8 by default ink-jet trajectory 13 to ink gun 4 with
When position that substrate 14 intersects vertically issues light detecting signal 6 and is monitored to ink gun 4, before step S501 further include with
Lower step:
Optical detection apparatus 2 is before ink gun 4 sprays ink droplet, to the default ink-jet trajectory 13 and substrate 14 of ink gun 4
The position (region to be printed) to intersect vertically issues the light detecting signal 6 of preset strength, and receives light detecting signal 6 through substrate 14
The optical feedback signal 7 formed after reflection, and the intensity of optical feedback signal 7 is sent to control device 3；
Control device 3 is using the intensity of the optical feedback signal 7 of acquisition as initial strength, in 4 ink jet process of ink gun
The intensity for the optical feedback signal 7 that control device 3 obtains is corrected.
In the present embodiment, intersected vertically due to default ink-jet trajectory 13 from light emitting devices 8 to ink gun 4 and substrate 14
When position issues light detecting signal 6, part light detecting signal 6 can be absorbed by substrate, therefore be needed before ink gun 4 starts ink-jet
Zero correction, i.e., the optical feedback signal 7 that control device 3 obtains before spraying ink droplet using ink gun 4 are done to Systems for optical inspection 1
The initial strength intensity of optical feedback signal 7 that control device 3 in 4 ink jet process of ink gun is obtained be corrected, to eliminate
Systematic error avoids influencing ink ejecting state because the strength variance of the optical feedback signal of detection 7 is larger in ink jet printing process
As a result judgement.
Although above preferred embodiment is not to limit in conclusion the application is disclosed above with preferred embodiment
The application processed, those skilled in the art are not departing from spirit and scope, can make various changes and profit
Decorations, therefore the protection scope of the application subjects to the scope of the claims.
Claims (10)
1. a kind of ink ejecting state detection system of ink gun, which is characterized in that including optical detection apparatus and control device；
The optical detection apparatus is correspondingly arranged with the ink gun, is used for when the ink gun sprays ink droplet, to the ink
Drop issues the light detecting signal of preset strength, and receives the light feedback letter that the light detecting signal is formed after ink droplet absorption
Number, and the optical feedback signal is sent to the control device；
The control device is electrically connected with the optical detection apparatus, for detecting the ink gun according to the optical feedback signal
Ink ejecting state.
2. the ink ejecting state detection system of ink gun as described in claim 1, which is characterized in that the ink ejecting state includes spray
Mo Liang；
The control device is specifically used for obtaining the intensity of the optical feedback signal, calculates the intensity of the optical feedback signal and pre-
If the strength difference between normal intensity, and the strength difference is judged whether in the error range of permission, if so, determining
The ink ejection amount of the ink gun is normal, if it is not, then determining that the ink ejection amount of the ink gun is abnormal.
3. the ink ejecting state detection system of ink gun as described in claim 1, which is characterized in that the ink ejecting state includes spray
Black rate；
The control device is specifically used for obtaining the reception duration of the optical feedback signal, calculates the reception of the optical feedback signal
Duration and preset standard receive the time difference between duration, and judge the time difference whether permission error range
It is interior, if so, determining that the jetting rate of the ink gun is normal, if it is not, then determining that the jetting rate of the ink gun is abnormal；Institute
Stating and receiving duration includes that the optical feedback signal is ejected to from the ink droplet by the duration between optical detection apparatus reception.
4. the ink ejecting state detection system of ink gun as described in claim 1, which is characterized in that the optical detection apparatus packet
It includes:
Light emitting devices positioned at the side of the ink gun, and is electrically connected with the control device, for spraying in the ink gun
Out when ink droplet, Xiang Suoshu ink droplet issues the light detecting signal of preset strength；
Optical receiver apparatus is oppositely arranged positioned at the other side of the ink gun with the light emitting devices, and is filled with the control
Electrical connection is set, the optical feedback signal formed after ink droplet absorption for receiving the light detecting signal, and the light is anti-
Feedback signal is sent to the control device.
5. the ink ejecting state detection system of ink gun as claimed in claim 4, which is characterized in that the ink gun includes single-row
Multiple nozzles of arrangement；The light emitting devices includes and the multiple nozzle multiple launch holes correspondingly, each transmitting
The ink droplet that hole is used to spray to corresponding nozzle issues light detecting signal；
The optical receiver apparatus includes that multiple receiving transducers, each receiving transducer are used for correspondingly with the multiple launch hole
Receive the optical feedback signal that the light detecting signal that corresponding launch hole issues is formed after ink droplet absorption；
The default ink-jet trajectory of line and corresponding nozzle between each launch hole and corresponding receiving transducer intersects.
6. a kind of ink ejecting state detection method of ink gun, which is characterized in that the detection method be applied to as claim 1 to
In the ink ejecting state detection system of 5 described in any item ink guns, the detection system include optical detection apparatus and with it is described
The control device of optical detection apparatus electrical connection；
It is described that detection method includes the following steps:
The optical detection apparatus issues the light detecting signal of preset strength when the ink gun sprays ink droplet to the ink droplet,
And the optical feedback signal that the light detecting signal is formed after ink droplet absorption is received, and the optical feedback signal is sent to
The control device；
The control device detects the ink ejecting state of the ink gun according to the optical feedback signal.
7. the ink ejecting state detection method of ink gun as claimed in claim 6, which is characterized in that the ink ejecting state includes spray
Mo Liang；
The ink ejecting state that the ink gun is detected according to the optical feedback signal, comprising the following steps:
Obtain the intensity and preset standard intensity of the optical feedback signal；
Calculate the strength difference between the intensity of the optical feedback signal and the preset standard intensity；
Judge the strength difference whether in the error range of permission:
If so, determining that the ink ejection amount of the ink gun is normal；
If it is not, then determining that the ink ejection amount of the ink gun is abnormal.
8. the ink ejecting state detection method of ink gun as claimed in claim 6, which is characterized in that the ink ejecting state includes spray
Black rate；
The ink ejecting state that the ink gun is detected according to the optical feedback signal, comprising the following steps:
The reception duration and preset standard for obtaining the optical feedback signal receive duration；
The reception duration and the preset standard that calculate the optical feedback signal receive the time difference between duration；
Judge the time difference whether in the error range of permission；
If so, determining that the jetting rate of the ink gun is normal；
If it is not, then determining that the jetting rate of the ink gun is abnormal.
9. the ink ejecting state detection method of ink gun as claimed in claim 6, which is characterized in that the control device also with institute
State ink gun electrical connection；
The detection method is further comprising the steps of:
The control device obtains the ink gun of the ink ejecting state exception when detecting the ink gun of ink ejecting state exception
Location information, and corresponding ink gun is corrected and adjusted according to the positional information.
10. the ink ejecting state detection method of ink gun as claimed in claim 6, which is characterized in that the optical detection apparatus
Including light emitting devices and optical receiver apparatus, the light emitting devices and optical receiver apparatus are oppositely arranged on the two of the ink gun
Side, and be electrically connected with the control device；
The optical detection apparatus issues the light detecting signal of preset strength when the ink gun sprays ink droplet to the ink droplet,
And the optical feedback signal that the light detecting signal is formed after ink droplet absorption is received, and the optical feedback signal is sent to
The control device, comprising the following steps:
The light emitting devices issues the light detecting signal of preset strength when the ink gun sprays ink droplet to the ink droplet；
The optical receiver apparatus receives the optical feedback signal that the light detecting signal is formed after ink droplet absorption, and will be described
Optical feedback signal is sent to the control device.
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