CN108062003A - A kind of write-through screen printing system and method for platemaking - Google Patents
A kind of write-through screen printing system and method for platemaking Download PDFInfo
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- CN108062003A CN108062003A CN201610973501.7A CN201610973501A CN108062003A CN 108062003 A CN108062003 A CN 108062003A CN 201610973501 A CN201610973501 A CN 201610973501A CN 108062003 A CN108062003 A CN 108062003A
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000007650 screen-printing Methods 0.000 title claims abstract description 37
- 230000003287 optical effect Effects 0.000 claims abstract description 42
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- 238000007639 printing Methods 0.000 claims description 6
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/12—Production of screen printing forms or similar printing forms, e.g. stencils
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2051—Exposure without an original mask, e.g. using a programmed deflection of a point source, by scanning, by drawing with a light beam, using an addressed light or corpuscular source
- G03F7/2057—Exposure without an original mask, e.g. using a programmed deflection of a point source, by scanning, by drawing with a light beam, using an addressed light or corpuscular source using an addressed light valve, e.g. a liquid crystal device
Abstract
The invention discloses a kind of write-through screen printing system, system includes host, kinematic system, light source driving controller, light source, programmable data controller, spatial light modulator, active focus module, optical lens, site error correcting module and communication module.The invention also discloses a kind of methods for carrying out graph exposure on web plate using the write-through screen printing system.The write-through screen printing system of the present invention, lithography process are not required the film, at low cost, process is simple, the precision of images is high, are applicable to make super large web plate；The present invention carries out write-through plate-making using planar array type spatial light modulator, and processing fineness is high, control difficulty is small, and production capacity is high.The invention also achieves active focusing functions, effectively avoid leading to problems such as defocus because of web plate injustice and then figure is caused to obscure or expose insufficient.In addition, present invention further introduces site error correcting modules, the problem of relying on high accuracy platform is effectively overcome, reduces production cost.
Description
Technical field
The present invention relates to screen printing technical fields, and in particular to a kind of write-through screen printing system and method for platemaking.
Background technology
Traditional screen printing system by printer using the film, it is necessary to be made a plate.The film and the camera of early stage
Egative film is similar.It is as follows that plate-making flow is carried out using the film：The film with image is attached to the silk screen web plate for having applied photoresists
On, using the Hg lamp irradiation film, there is visuals that the photoresists of web plate with transmitted ray, can be made photosensitive on the film, it will be photosensitive
Web plate develops, and not photosensitive part can be dissolved by the developing after development, so as to form figure on web plate.
There are following defects for traditional method using film plate-making：
1st, consumables cost is high, and traditional silk-screened method for platemaking needs to make the film using film setter, and polychrome printing needs more
Zhang Feilin, the film is i.e. by discarding after printing down, and consumables cost is higher compared with directly making a plate；
2nd, increase process, cause inefficiency of making a plate：Traditional silk-screened lithography process needs pattern-making egative film first, then through shining
Version mechanism version process cycle is longer, inefficiency of making a plate, be thus also possible to cause the problem of more occur and cost of labor,
The increase of time cost；
3rd, the film is fragile：The film itself is yielding to be easily scratched, its service life is caused to be greatly affected greatly；
4th, super large web plate can not be made：It is limited by film area itself, traditional method for platemaking can not make super large web plate；
5th, the precision of images is poor, can not meet the plate-making of small line width figure：Since traditional silk-screened method for platemaking is to pass through pattern
What egative film was replicated with photoresists contact exposure and completed, thus the loss of image detail can be caused in reproduction process, the precision of images
Less than original copy, the phenomenon is particularly evident during the printing down of thick photoresists, therefore traditional film plate-making is usually only applicable to 50 μ
The line width of more than m.
In recent years, researchers have also carried out the trial that some are directly made a plate.Such as China Authorization Notice No. CN
In the patent of 103149801B, it is exposed processing using solid matter laser and realizes directly plate-making.But in practical applications, laser
Device assembling is limited be subject to physical condition, size etc., and the number of lasers that solid matter mode is assembled is fairly limited, is usually no more than
256, web plate plate-making can only use flat scanning in addition, and flat scanning needs ceaselessly replace scanning direction back and forth, significantly
The ability to work of tight-arranged laser is limited, causes production capacity low；The control in a manner that solid matter laser is directly made a plate
Difficulty processed is also larger, the subtle uneven difference that will all bring exposure effect of energy；It is directly made using solid matter laser
Also there is the not high enough deficiency of processing fineness in the mode of version.
On the other hand, in existing direct forme-producing system, web plate is fixed on often through fixture on platform.This fixation
Mode can not ensure that each several part of web plate is maintained at the same horizontal plane, and reason is：(1) deformation of web plate itself；(2) fixture
Each gap is uneven；(3) gravity causes web plate center section to occur slight sagging.Web plate each several part cannot keep same
The problem of defocus can be brought on horizontal plane, and then figure is caused to obscure or expose insufficient.In addition, existing direct forme-producing system
It is higher for the locating platform required precision of feedback position signal, result in that the production cost increases.
The content of the invention
The of high cost, problems such as process is more, precision is low brought present invention aim to address tradition using the film and existing
The direct method for platemaking production capacity that has is low, processing fineness is poor, easy defocus, it is high to locating platform required precision the problems such as.
To achieve these goals, the present invention provides a kind of write-through (DIS) screen printing system and uses the system
The method of plate-making.
Technical scheme is as follows：
A kind of write-through screen printing system, for carrying out graph exposure during screen printing on web plate, system includes master
Machine, kinematic system, light source driving controller (LSC), light source (LS), programmable data controller (PDC), spatial light modulator
(SLM), active focus module (AF), optical lens, site error correcting module and communication module；
The kinematic system is made of stepping platform, scanning platform and platform driver, wherein platform driver and host phase
Connect and drive stepping platform and scanning platform movement；
The light source driving controller controls the on off state and light intensity of the light source；
The programmable data controller is connected directly with host, under the control of host spatial light modulator is driven to complete exposure
Task；
Distance between the active focus module control optical lens and web plate；
The site error correcting module receives the real-time position signal that scanning platform is sent, and real-time position signal is modified
Obtain exact position signal and by exact position signal output to programmable data controller；
The communication module uplink is connected with host, and downlink is respectively connected with light source driving controller and active focus module.
Wherein, the host is one kind in personal computer, server or industrial personal computer.
Wherein, the stepping platform bearer web plate and web movement is driven, the scanning platform carries active focus module
With optical lens and active focus module and optical lens is driven to move.
Wherein, the light source is one kind in laser or LED.
Wherein, the programmable data controller is by random access memory, field programmable gate array and space light modulation
Device control chip (SLMC) forms.
Wherein, it is digital light processing chip (DLP) that the spatial light modulator, which controls chip,.
Wherein, the spatial light modulator is Digital Micromirror Device (DMD).
Wherein, the active focus module is made of high-speed electric expreess locomotive, position sensor and active focus controller.
The present invention also provides a kind of method for carrying out graph exposure on web plate using above-mentioned write-through screen printing system,
Include the following steps：
(1) web plate preparation process, host send instruction to platform driver, and platform driver driving stepping platform is moved to adjustment of the printing plate
Web plate is placed on stepping platform by position by manual or automatic upper panel assembly, then the web plate by being arranged on stepping platform fixes dress
It puts and web plate is fixed；
(2) domain forwarding step, domain is sent to programmable data controller by host, while is sent out to programmable data controller
Go out close space light modulator instructions；
(3) preparation process is exposed, host calculates initial exposure point position according to relevant parameter, and then control platform driver drives
Dynamic stepping platform and scanning platform are moved to initial exposure point position；Wherein, relevant parameter includes domain size, web plate size
Deng；
(4) active focus steps are started, the instruction that active focus module is issued via communication module receiving host proceeds by master
Dynamic focusing operation；
(5) domain ready signal and graphic hotsopt step, programmable data controller receive domain and it is ready after, to host
Domain ready signal is sent, expression can start to expose, and be received afterwards in programmable data controller foundation domain forwarding step
Domain, constantly spatially optical modulator width generation graph data；
(6) light source step is opened, light source driving controller receives the instruction that host issues via communication module, opens light source；
(7) the single sweep operation step of positive direction, platform driver receive the control instruction that host is sent, and driving scanning platform is by finger
Constant speed degree uniform motion is to the end position of single sweep operation, and in scanning process, scanning platform continues to site error correcting module
Feedback position signal, site error correcting module are modified the position signal received to obtain exact position signal, and defeated
Go out exact position signal to programmable data controller, programmable data controller is empty according to the exact position signal control of reception
Between optical modulator designated position project corresponding pattern；
(8) stepping moving step, platform driver receive the control instruction that host is sent, and drive stepping platform to region to be exposed
The distance of mobile space optical modulator effective sweep width；
(9) the single sweep operation step of negative direction, platform driver receive the control instruction that host is sent, and driving scanning platform is by finger
Constant speed degree negative direction uniform motion is to the end position of negative direction, and in scanning process, scanning platform continues to site error amendment
Module feedback position signal, site error correcting module are modified the position signal received to obtain exact position signal,
And exact position signal is exported to programmable data controller, programmable data controller is according to the exact position signal control of reception
Spatial light modulator processed projects corresponding pattern in designated position；
(10) stepping moving step, platform driver receive the control instruction that host is sent, and drive stepping platform to area to be exposed
The distance of domain mobile space optical modulator effective sweep width；
(11) step (7)-step (10) is repeated, until all figures are transferred, exposure process is completed.
Wherein, the process of active focusing operation is as follows described in the startup active focus steps：In active focus module
Position sensor measure camera lens in real time to the distance between web plate, it is main when the value of the distance is more than the error range of camera lens
Active focus controller in dynamic focus module moves up and down the high-speed electric expreess locomotive in active focus module so that the focal plane of camera lens is protected
It holds in web plate plane.
Beneficial effects of the present invention are as follows：
The write-through screen printing system of the present invention, the film is not required in lithography process, effectively reduces cost, and process it is simple,
The precision of images is high, is applicable to make super large web plate；The present invention carries out write-through plate-making, phase using planar array type spatial light modulator
For the mode that conventionally employed solid matter laser is directly made a plate, fineness higher is processed, control difficulty is small, and production capacity is notable
It is promoted.
In addition, the present invention realizes active focusing function, can also be adapted to very well in the case of web plate is uneven so that camera lens
Focal plane is remained in web plate plane, defocus caused by effectively avoiding web plate out-of-flatness and then figure is caused to obscure or expose not
The problems such as abundant.Present invention further introduces site error correcting modules, effectively overcome and high-precision dependence is asked
Topic, reduces production cost.
Description of the drawings
Fig. 1 is a kind of module composition figure of write-through screen printing system of the embodiment of the present invention；
Fig. 2 is a kind of structure diagram of write-through screen printing device of another embodiment of the present invention；
Fig. 3 is a kind of dimensional structure diagram of write-through screen printing device of another embodiment of the present invention；
Fig. 4 is the method flow diagram for carrying out graph exposure on web plate using the write-through screen printing system of the present invention.
Reference sign：
1 --- host, 2 --- kinematic system, 2-1 --- stepping platform, 2-2 --- scanning platform, 2-3 --- platform drive
Device, 3 --- light source driving controller, 4 --- light source, 5 --- programmable data controller, 6 --- spatial light modulator,
7 --- active focus module, 8 --- optical lens, 9 --- site error correcting module, 10 --- communication module, 11 --- net
Plate, 12 --- marble frame, 12-1 --- pedestal, 12-2 --- gantry, 12-2-1 --- gantry support, 12-2-2 --- dragon
Door crossbeam, 13 --- web plate fixing device, 14 --- optical system.
Specific embodiment
Below in conjunction with attached drawing, technical scheme is clearly and completely described.
Embodiment 1
The present invention provides a kind of write-through screen printing system, for carrying out graph exposure on web plate during screen printing.
It is the module composition figure of the write-through screen printing system of a specific embodiment of the invention shown in Fig. 1.The system includes host
1st, kinematic system 2, light source driving controller 3, light source 4, programmable data controller 5, spatial light modulator 6, actively focus on mould
Block 7, optical lens 8, site error correcting module 9 and communication module 10.
Host 1 can be PC, all kinds of servers or all kinds of industrial personal computers.The main function of host 1 is to receive domain, caching version
Figure and pretreatment domain and master control PDC, LSC, AF and kinematic system cooperate.Involved domain is generally by CAM softwares
It is responsible for generation, form can be PDF, GDSII, GERBER, ODB++, TIF, BMP, DWG or DPF etc..
Kinematic system 2 is made of stepping platform 2-1, scanning platform 2-2 and platform driver 2-3, and wherein platform drives
Device 2-3 is connected with host 1 and stepping platform 2-1 and scanning platform 2-2 is driven to move.Stepping platform 2-1 carries web plate and drives
Web plate is moved in step direction, and scanning platform 2-2 carries active focus module 7 and optical lens 8 and drives active focus module 7
It is continuously moved in scanning direction with optical lens 8.Scanning direction and step direction are mutually perpendicular to, but each parallel to web plate plane.
Light source driving controller 3 controls the on off state and light intensity of light source 4；Light source is required during exposure for providing
Light energy, during exposure, light source is in normally opened constant current state.The light source used in the present embodiment is one in laser or LED
Kind.
Programmable data controller 5 is connected directly 1 with host, under the control of host 1 spatial light modulator 6 is driven to complete
Exposure task.Programmable data controller 5 is by random access memory (RAM), field programmable gate array (FPGA) and spatial light
Modulator control chip (SLMC) forms.Programmable data controller 5 parses the vector graphics or bitmap transmitted by host 1, will
It is handled by systematic parameter, then generates the acceptable forms of SLMC, and drives the projection work of SLMC completion images.This
In embodiment, the SLMC used is the DLP chips that Texas Instrument (TI) provides.
Spatial light modulator 6 mainly according to figure or graph data, under the action of the irradiation of light source, projects in substrate
Different patterns.SLM is by the reflection or refraction to light, the position of graph position and current kinetic system in domain,
It generates the optical design that exposure needs in real time by PDC, SLM is driven to complete exposure task.In the present embodiment, the SLM used is
The Digital Micromirror Device (DMD) that TI is provided.
Active focus module 7 controls the distance between optical lens 8 and web plate, and the focal plane of camera lens is made to remain at web plate and is put down
On face；Active focus module 7 is made of high-speed electric expreess locomotive, position sensor and active focus controller.Its course of work is as follows：It is main
Position sensor in dynamic focus module 7 measures optical lens 8 to the distance between web plate in real time, when the value of the distance is more than camera lens
During 8 error range, the active focus controller in active focus module 7 moves up and down the high speed electricity in active focus module 7
Machine so that the focal plane of camera lens is maintained in web plate plane.
Site error correcting module 9 receives the real-time position signal that scanning platform 2-2 is sent, then to real-time position signal
It is modified to obtain exact position signal, and exact position signal is delivered to PDC, believed by PDC according to the exact position of reception
Number control SLM designated position project corresponding pattern.
10 uplink of communication module is connected with host 1, and downlink is respectively connected with LSC and AF, is issued for receiving host 1
Control command simultaneously distributes control command to corresponding module.
In the write-through screen printing system of the present embodiment, it is made of light source, SLM, optical lens and active focus module
Optical system, wherein, light source is that (lighting system further includes other for even light, the optics focused on for the part of lighting system
Element), and actively focus on, optical lens and SLM then constitute the imaging moiety of optical system.Active focusing system is located at SLM
Lower section.
Embodiment 2
This gives a kind of specific devices of the write-through screen printing system of the application present invention.
If Fig. 2 is a kind of structure diagram of write-through screen printing device of the present embodiment；Fig. 3 is the straight of the present embodiment
Write the dimensional structure diagram of formula screen printing device.It can be seen from the figure that stepping platform 2-1 and scanning platform 2-2 are held
It is loaded on marble frame 12, which includes pedestal 12-1 and gantry 12-2, and pedestal 12-1 is parallel to horizontal plane, dragon
Door 12-2 includes gantry support 12-2-1 and gantry beam 12-2-2, and gantry support 12-2-1 is perpendicular to horizontal plane and is fixed on bottom
On seat 12-1, gantry beam 12-2-2 is located at gantry support 12-2-1 tops
Wherein, stepping platform 2-1 is fixed on pedestal 12-1, immediately below gantry beam 12-2-2, step direction and gantry
Crossbeam 12-2-2 is perpendicular；
Scanning platform 2-2 is fixed on gantry beam 12-2-2, optical system 14 is carried on scanning platform 2-2, including light source
4th, SLM6, optical lens 8 and active focus module 7；
Web plate fixing device 13 in the present embodiment is web plate fixture.Web plate 11 is fixed on by web plate fixture on stepping platform,
Web plate fixture can effectively avoid web plate and slide or beat during exercise, so as to avoid exposure figure entanglement.
Embodiment 3
The present embodiment provides the methods that the write-through screen printing system of the application present invention carries out graph exposure on web plate.Fig. 4
It is the method flow diagram for carrying out graph exposure on web plate using the write-through screen printing system of the present invention.This method is specifically wrapped
Include following steps：
In web plate preparation process S1, host 1 sends instruction, platform driver 2-3 driving stepping platforms to platform driver 2-3
2-1 is moved to adjustment of the printing plate position, and web plate is placed on stepping platform 2-1 by manual or automatic upper panel assembly, then by being arranged on stepping
Web plate is fixed in the web plate fixing device of platform 2-1；
In domain forwarding step S2, domain is sent to programmable data controller 5 by host 1, while to programmable data control
Device 5 processed sends close space optical modulator 6 and instructs --- since stepping platform 2-1 and scanning platform 2-2 are moved to and expose
It could be exposed after initial point, therefore, need to close before stepping platform 2-1 and scanning platform 2-2 are moved to exposure starting point
SLM。
In preparation process S3 is exposed, host 1 calculates initial exposure point position according to relevant parameter, then control platform
Driver 2-3 drivings stepping platform 2-1 and scanning platform 2-2 is moved to initial exposure point position.Wherein, relevant parameter includes net
Plate size, domain size and platform identity etc..
In active focus steps S4 is started, instruction that active focus module 7 is issued via communication module receiving host 1,
Carry out active focusing operation；Operating process is：Position sensor in active focus module 7 measures optical lens 8 to net in real time
Distance between plate 11, it is actively poly- when the value of the distance is more than the error range of optical lens 8 (such case is known as defocus)
Active focus controller in burnt module 7 moves up and down the high-speed electric expreess locomotive in active focus module 7 so that the coke of optical lens 8
Face is maintained in web plate plane.
Active focus module 7 is an autonomous module, and host 1 controls it to start after actively focusing on, which will no longer connect
It is ordered by host 1, until host assigns the order for stopping actively focusing on.
In domain ready signal and graphic hotsopt step S5, the reception domain of programmable data controller 5 is simultaneously ready
Afterwards, domain ready signal is sent to host 1, expression can start to expose, afterwards version of the programmable data controller 5 according to reception
Figure, constantly spatially the width of optical modulator 6 generates graph data.
In light source step S6 is opened, light source driving controller 3 receives the instruction that host 1 issues via communication module 10,
Open light source 4.
In the single sweep operation step S7 of positive direction, platform driver 2-3 receives the control instruction that host 1 is sent, driving
Scanning platform 2-2 is by the end position of command speed uniform motion to single sweep operation, and in scanning process, scanning platform 2-2 continues
To 9 feedback position signal of site error correcting module, site error correcting module 9 is modified the position signal received
To exact position signal, and exact position signal is exported to programmable data controller 5, programmable data controller 5 is according to connecing
Designated position projection corresponding pattern of the exact position signal control spatial light modulator 6 of receipts on web plate 11；Wherein, scanning speed
Degree is codetermined by the light intensity of the ink on web plate 11 and light source 4；The end position of single sweep operation is by the size of given domain
It determines；In single sweep operation, the travel distance of scanning platform 2-2 is equal to domain along the radial dimension on scanning direction.Assuming that domain
Size is A*B, and wherein A is the length along step direction, and B is the length along scanning direction, then the scanning distance in single sweep operation
For B, it by starting exposure point along in the directions of rays of scanning direction is B with starting exposure point distance that the end position of single sweep operation, which is,
Point.
Site error correcting module 9 exports accurately after being modified compensation by the scanning platform 2-2 position signals fed back
Position signal meets the correct patterns that accuracy rating requires so that it is guaranteed that being showed on web plate.Since 2 platform of scanning platform is deposited
In error, it is therefore desirable to which the position signal that it feeds back is modified.Platform error includes two kinds of systematic error and random error,
Wherein, systematic error includes angular error, the error of graduation, encoding error, harmomegathus error, time city error etc., and random error includes
Run-out error, pitch error, rolling error etc..Systematic error can be corrected or make up the difference, and random error be not can compensate for or
It is modified.Site error correcting module 9 is modified compensation aiming at systematic error.
Systematic error primarily form the reason is that：The pulse signal of characterization position is between the minimum resolution according to grating
Away from what is set out, due to temperature, machining accuracy and algorithm of subdivision etc., deposited between the P-pulse spacing and minimum resolution of output
In a variety of errors, i.e. systematic error.Typical legacy system error correction mode is the side using mapping range (MAPPING)
Formula, when this mode is applied in the write-through forme-producing system of the present invention, for locating module (middle finger scanning platform of the present invention)
Absolute fix precision and the precision of translational speed have higher requirement, cause increasing for system cost.It is introduced in the present invention
Error correction module can realize the compensation for precision while low cost is kept.Concrete mode is：Use high-precision
Measuring device after measuring systematic error distribution, writes data into two-dimentional MAPPING.Error correction module directly uses should
MAPPING carries out the amendment of error.The generation type of two-dimentional MAPPING is：The one-dimensional MAPPING of different X values is obtained respectively, so
After combine, obtain two dimension MAPPING.The acquisition modes of one-dimensional MAPPING are by being counted and having been judged to P-pulse
Into.Arithmetic logic is as follows：
Assuming that exposure accuracy (pw) is c pulse, wherein the theoretical spacing of pulse is d, i.e., generates once position per c step-by-step counting
Confidence number (POS).
It now sets from a points to b points and moves, the absolute counting of a points is, the counting number of a points to b points is, it is noted thatIt is
Absolute magnitude,It is relative quantity, therefore the pulse sequence of b points is；
(1) cumulative errors are made；A, section where b points is：,.Wherein, tire out
Meter error is defined as follows：When each position signal generates, the distance of platform movement can not possibly be precisely exposure accuracy (pw), then
At this point, the error between distance and the exposure accuracy of theory that the reality output for just generating a position signal is passed through, and
And the error can lagging influence to the output of postorder multiple position signals, therefore referred to as cumulative errors.
(2) it is set to,t=0.Wherein,CWhat is represented is current total pulse counter, is known as pile-up pulse and counts
Device；T is the pulse counter in position signal generating period, is known as cycle rate counter；
(3) section where judging C, obtain the error coefficient in the section
(4) cumulative errors, and C=C+1 is taken, t=t+1；JudgeIt is whether true, if set up,
Step-by-step counting is completed, otherwise performs next step；
(5) if,
If a)t=C, then a position signal is generated, then goes to step (3)；
If b)t<C, then step (3) is gone to；
(6) if,
If a), then t=t+1,, then go to step (5)；
If b), then t=t-1,, then go to step (5)；
By site error correcting module, the dependence to high accuracy platform can be effectively overcome, so as to significantly reduce product
Production cost.
In stepping moving step S8, platform driver 2-3 receives the control instruction that host 1 is sent, and drives stepping platform
2-1 is to the distance of 6 effective sweep width of region mobile space optical modulator to be exposed.The definition of effective sweep width is：Assuming that
The graphic width that spatial light modulator 6 exposes in single sweep operation is d, then d is the effective sweep width of spatial light modulator 6
Degree.
In the single sweep operation step S9 of negative direction, platform driver 2-3 receives the control instruction that host 1 is sent, driving
Scanning platform 2-2 by command speed negative direction uniform motion to negative direction end position, in scanning process, scanning platform 2-2
Continue to 9 feedback position signal of site error correcting module, site error correcting module 9 repaiies the position signal received
Exact position signal is just being obtained, and is exporting exact position signal to programmable data controller 5, programmable data controller 5
Corresponding pattern is projected according to designated position of the exact position signal control spatial light modulator 6 of reception on web plate 11；Equally, sweep
Speed is retouched to be codetermined by the light intensity of the ink on web plate 11 and light source 4；The end position of single sweep operation is by given domain
Size determines.Based in step S7-S8 it is assumed that the end position of negative direction is that distance originates exposure point along step direction at this time
Distance is the position of d；By S7-S9, the total scanning distance of positive and negative direction is 2*B, and the travel distance of stepping platform is d.
In stepping moving step S10, platform driver 2-3 receives the control instruction that host 1 is sent, and drives stepping platform
2-1 is to the distance of 6 effective sweep width of region mobile space optical modulator to be exposed；
Step S7- step S10 are repeated, until all figures are transferred, exposure process is completed.
Use above specific embodiment elaborates technical scheme, it is clear that described embodiment is only
Only it is part of the embodiment of the present invention, instead of all the embodiments.Meanwhile the explanation of above example is only intended to help to manage
Solve the core concept of the present invention, for those of ordinary skill in the art, thought according to the invention, in specific embodiment and
There will be changes in application range.Therefore, based on the embodiments of the present invention, those of ordinary skill in the art are not making
Go out all other embodiment obtained under the premise of creative work, belong to the scope of protection of the invention.In conclusion this theory
Bright book content should not be construed as limiting the invention.
Claims (10)
1. a kind of write-through screen printing system, for carrying out graph exposure on web plate during screen printing, feature exists
In：Including host (1), kinematic system (2), light source driving controller (3), light source (4), programmable data controller (5), space
Optical modulator (6), active focus module (7), optical lens (8), site error correcting module (9) and communication module (10)；
The kinematic system (2) is made of stepping platform (2-1), scanning platform (2-2) and platform driver (2-3), wherein
Platform driver (2-3) is connected with host (1) and stepping platform (2-1) and scanning platform (2-2) is driven to move；
The light source driving controller (3) controls the on off state and light intensity of the light source (4)；
The programmable data controller (5) is connected directly (1) with host, and space light modulation is driven under the control of host (1)
Device (6) completes exposure task；
Distance of active focus module (7) the control optical lens (8) between web plate；
The site error correcting module (9) receives the real-time position signal that scanning platform (2-2) is sent, to real-time position signal
It is modified to obtain exact position signal, and by exact position signal output to programmable data controller (5)；
Communication module (10) uplink is connected with host (1), downlink and light source driving controller (3) and active focus module
(7) it is respectively connected with.
2. a kind of write-through screen printing system according to claim 1, it is characterised in that：The host (1) is personal
One kind in computer, server or industrial personal computer.
3. a kind of write-through screen printing system according to claim 1, it is characterised in that：The stepping platform (2-1)
Carrying web plate simultaneously drives web movement, and the scanning platform (2-2) carries active focus module (7) and optical lens (8) and band
Dynamic active focus module (7) and optical lens (8) movement.
4. a kind of write-through screen printing system according to claim 1, it is characterised in that：The light source (4) is laser
One kind in device or LED.
5. a kind of write-through screen printing system according to claim 1, it is characterised in that：The programmable data control
Device (5) is made of random access memory, field programmable gate array and spatial light modulator control chip.
6. a kind of write-through screen printing system according to claim 5, it is characterised in that：The spatial light modulator control
Coremaking piece is digital light processing chip.
7. a kind of write-through screen printing system according to claim 1, it is characterised in that：The spatial light modulator
(6) it is Digital Micromirror Device.
8. a kind of write-through screen printing system according to claim 1, it is characterised in that：The active focus module
(7) it is made of high-speed electric expreess locomotive, position sensor and active focus controller.
9. a kind of method for carrying out graph exposure on web plate using write-through screen printing system as described in claim 1,
It is characterized in that, includes the following steps：
Web plate preparation process, host (1) send instruction, platform driver (2-3) driving stepping platform to platform driver (2-3)
(2-1) is moved to adjustment of the printing plate position, and web plate is placed on stepping platform (2-1) by manual or automatic upper panel assembly, then by being arranged on
Web plate is fixed in the web plate fixing device of stepping platform (2-1)；
Domain forwarding step, domain is sent to programmable data controller (5) by host (1), while is controlled to programmable data
Device (5) sends close space optical modulator (6) instruction；
Preparation process is exposed, host (1) calculates initial exposure point position according to relevant parameter, then control platform driver
(2-3) driving stepping platform (2-1) and scanning platform (2-2) are moved to initial exposure point position；
Start active focus steps, the instruction that active focus module (7) is issued via communication module receiving host (1), start into
Row active focusing operation；
Domain ready signal and graphic hotsopt step, programmable data controller (5) receive domain and it is ready after, to host
(1) domain ready signal is sent, expression can start to expose, and programmable data controller (5) is according to domain forwarding step afterwards
The domain of middle reception, constantly spatially the width of optical modulator (6) generates graph data；
Light source step is opened, light source driving controller (3) receives the instruction that host (1) issues via communication module (10), opens
Light source (4)；
The single sweep operation step of positive direction, platform driver (2-3) receive the control instruction that host (1) is sent, and driving scanning is flat
Platform (2-2) is arrived the end position of single sweep operation by command speed uniform motion, in scanning process, scanning platform (2-2) persistently to
Site error correcting module (9) feedback position signal, site error correcting module (9) are modified the position signal received
Exact position signal is obtained, and exports exact position signal to programmable data controller (5), programmable data controller (5)
Corresponding pattern is projected in designated position according to the exact position signal control spatial light modulator (6) of reception；
Stepping moving step, platform driver (2-3) receive the control instruction that host (1) is sent, driving stepping platform (2-1) to
The distance of region mobile space optical modulator (6) effective sweep width to be exposed；
The single sweep operation step of negative direction, platform driver (2-3) receive the control instruction that host (1) is sent, and driving scanning is flat
Platform (2-2) is by the end position of command speed negative direction uniform motion to negative direction, and in scanning process, scanning platform (2-2) is held
Continue to site error correcting module (9) feedback position signal, site error correcting module (9) carries out the position signal received
Amendment obtains exact position signal, and exports exact position signal to programmable data controller (5), programmable data controller
(5) corresponding pattern is projected in designated position according to the exact position signal control spatial light modulator (6) of reception；
Stepping moving step, platform driver (2-3) receive the control instruction that host (1) is sent, driving stepping platform (2-1) to
The distance of region mobile space optical modulator (6) effective sweep width to be exposed；
Repeat the single sweep operation step of the positive direction --- the stepping moving step --- single of the negative direction
Scanning step --- the stepping moving step, until all figures are transferred, exposure process is completed.
10. write-through screen printing system as described in claim 1 is utilized on web plate according to a kind of as claimed in claim 9
The method for carrying out graph exposure, which is characterized in that the process for starting active focusing operation described in active focus steps is such as
Under：Position sensor in active focus module (7) measures optical lens (8) to the distance between web plate in real time, when the distance
Value when being more than the error range of optical lens (8), the active focus controller in active focus module (7) moves up and down actively
High-speed electric expreess locomotive in focus module (7) so that the focal plane of optical lens (8) is maintained in web plate plane.
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| CN201610973501.7A CN108062003A (en) | 2016-11-07 | 2016-11-07 | A kind of write-through screen printing system and method for platemaking |
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| CN201610973501.7A CN108062003A (en) | 2016-11-07 | 2016-11-07 | A kind of write-through screen printing system and method for platemaking |
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| CN109484012A (en) * | 2019-01-04 | 2019-03-19 | 安徽地势坤光电科技有限公司 | A kind of write-through screen printing system and method with vision-based detection |
| CN109631778A (en) * | 2018-12-29 | 2019-04-16 | 杭州东信光电科技有限公司 | Flexographic plate version thickness automatic measurement system and its measurement method |
| CN112895691A (en) * | 2021-01-18 | 2021-06-04 | 景旺电子科技(珠海)有限公司 | Printing screen and manufacturing method thereof |
| CN113878977A (en) * | 2021-08-24 | 2022-01-04 | 江苏友迪激光科技有限公司 | Screen exposure method and device |
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