CN203311159U - Main exposure equipment for platemaking of flexible printed board - Google Patents
Main exposure equipment for platemaking of flexible printed board Download PDFInfo
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- CN203311159U CN203311159U CN2013203498630U CN201320349863U CN203311159U CN 203311159 U CN203311159 U CN 203311159U CN 2013203498630 U CN2013203498630 U CN 2013203498630U CN 201320349863 U CN201320349863 U CN 201320349863U CN 203311159 U CN203311159 U CN 203311159U
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Abstract
The utility model relates to main exposure equipment for platemaking of a flexible printed board. The main exposure equipment is characterized by comprising at least one main exposure light source for exposing a photosensitive layer exposed on an exposure printed board blank, and a raster image processor for controlling and connecting the main exposure light source, wherein the main exposure light source comprises a plurality of LEDs (light-emitting diode) and an executing mechanism; the plurality of LEDs are arranged in a dot-matrix manner; the executing mechanism controls the exposure height of the LEDs; the LEDs are respectively connected with a light modulator; the raster image processor controls and connects the executing mechanism and the light modulator, so as to selectively control lighting of the LEDs, the exposure heights, the exposure time and the exposure intensity. The main exposure equipment has the advantages that the top of a mesh point forms the top of the mesh point similar to a cylinder, so that the printed board has higher abrasive resistance; the photosensitive layer exposed by the printed board blank forms a compact protective layer, so as to reduce oxygen corrosion to the maximal extent.
Description
Technical field
The utility model relates to the flexographic printing technical field, relates in particular to a kind of main exposure equipment for flexible printing plate plate-making.
Background technology
Flexographic printing is a kind of printing process, and it uses the elastic relief image in rubber forme or photopolymer forme to print goods such as carton, sack, label or books.Have been found that flexographic printing has special application in packaging industry, flexographic printing has replaced photogravure and lithographic plate offset printing in many cases in the sector.
In print field, form the method for above-mentioned camegraph normally, to have the mask layer of setting pattern covers on the unexposed galley base substrate that contains photosensitive elastic body (or being referred to as photosensitive layer), use the black masks layer on the laser ablation photosensitive layer and it is evaporated, on mask layer, picture and text partly become transparent zone; By actinic radiation (being generally ultraviolet radiation) exposure galley base substrate bottom surface, in photosensitive layer, the decomposition of initiator of bottom part becomes free radical afterwards, causes crosslinkable monomers and reacts and solidify, to set up firm flexographic plate base; The galley of exposing simultaneously base substrate front, the zone that mask layer is transparent sees through ultraviolet light, and in photosensitive layer, the decomposition of initiator on upper strata becomes free radical, causes crosslinkable monomers and reacts and solidify.See through ultraviolet zone cross-linking reaction can not occur, utilize the difference of their solubleness in platemaking, after the aftertreatment such as wash version and dry, go to glue, obtain containing the embossment forme of character pattern.And in this field, a kind ofly form the above-mentioned mode of mask layer with transparent region and be: at first use laser emission (being generally by computer-controlled infrared radiation) that described element imaging is exposed, optionally to remove the mask layer in exposure area, then use actinic radiation (UV radiation usually) by described element blanket exposure, so that the photosensitive layer in transparent region solidifies.
In technique scheme, main exposure time length and exposure intensity are mainly determined by galley blank of material, specification and embossing pattern shape.Main exposure time length and exposure intensity are single parameter, can not adjust; Too short or the too low meeting of exposure intensity of time shutter makes the picture and text gradient too straight, and lines are crooked, dot loss, and small character, point part are washed off; Otherwise the long or too high meeting of exposure intensity of time shutter causes the negative literary composition more shallow, produce and apply version, the phenomenon such as the handwriting is blurred.
In digital plate-making method described above, mask and exposure, can be referring to Fig. 3 in conjunction with usually producing the burr site of truncated cone-shaped, and it is the form of site in ideal.But because oxygen plays free radical scavenger, the oxygen molecule that curing reaction can be dissolved in photosensitive layer (being generally resin combination) suppresses, and can produce situation as shown in Figure 4 in this case, and the outer peripheral portion of site is etched and causes site to dwindle.In the prior art, avoid as far as possible the method that oxygen corrodes to mainly contain following two kinds:
A kind of is after exposure, washes before version a dissolved oxygen concentration that reduces photosensitive layer, element is placed in to inert gas atmosphere (as carbon dioxide or nitrogen) and replaces the oxygen of dissolving and complete.The shortcoming of this method is troublesome poeration, and inconvenience and needs are for the large-scale confined space of place apparatus.
Another kind of known method is galley to be carried out to the pre-exposure of actinic radiation.Use LED light source high-power, the short time to expose to the mask layer with transparent region and photosensitive layer composite component, on the photosensitive layer surface, form a thin cured layer, it has obviously reduced the concentration of dissolved oxygen DO in photosensitive layer, thereby helps minutiae (as adding bright spot, fine rule, isolated point etc.) to be retained in final galley.Yet, this two steps that main exposure is divided into to pre-exposure+main exposure are sent out the complexity that technique has improved equipment, and because the light intensity of pre-exposure is consistent with the time shutter on the full width face, the oxygen etching effect difference that this has also caused at bulk image-text area and tiny image-text area, also just caused the forme of bulk image-text area and tiny image-text area still to have slight difference.
The utility model content
The purpose of this utility model is for the structural shortcoming of prior art, proposes a kind of main exposure equipment for flexible printing plate plate-making, by the LED that adopts dot matrix to arrange, expose, and the problem of having avoided oxygen to corrode.
In order to reach above-mentioned utility model purpose, the method for platemaking of a kind of flexible printing plate the utility model proposes is achieved through the following technical solutions:
A kind of main exposure equipment for flexible printing plate plate-making, it is characterized in that: described main exposure equipment comprises the main exposure light source be used to the photosensitive layer exposed to the open air on the galley base substrate that exposes at least, and the raster image processor of the described main exposure light source of control linkage; Described main exposure light source comprises the LED that some dot matrixs are arranged and controls the topworks of described LED exposure height; Those LED respectively connect a light modulator, the described topworks of described raster image processor control linkage and light modulator, and described LED is luminous, height, time shutter and exposure intensity expose optionally to control.
Described main exposure equipment also comprises that at least one is be used to monitoring the camera of described galley base substrate position, and described camera connects described raster image processor.
Described topworks is electronically controlled motor.
Described topworks is cylinder.
Compared with prior art, the beneficial effects of the utility model are:
1. more near the height of forme, carrying out the first exposure, can make the top of site form to be similar to top, cylindrical site, make forme have higher wearing quality;
2. use the Exposure mode of short time, large light intensity to expose for the first time, the photosensitive layer that the galley base substrate is exposed forms fine and close protective seam, corrodes to reduce to greatest extent oxygen;
3. the height away from slightly carries out the second exposure from the galley base substrate, can make the bottom of site form the support of taper, make the intensity life-span larger, galley of site more of a specified duration;
4. use Exposure mode long-time, little light intensity to carry out the second exposure, and it is slightly long according to graph-text content, to control the regional exposure time that picture and text are many, the regional exposure time that picture and text are few is slightly short; Make the final galley height formed in each zone as far as possible consistent.
The accompanying drawing explanation
By the description of its exemplary embodiment being carried out below in conjunction with accompanying drawing, the above-mentioned feature and advantage of the utility model will become apparent and easily understand.
Fig. 1 is the one-piece construction front view of the utility model embodiment main exposure equipment;
Fig. 2 is the one-piece construction side view of the utility model embodiment main exposure equipment;
Fig. 3 is the morphogenetic site of ideal exposure shape aspect graph;
Fig. 4 is that oxygen corrodes the site aspect graph produced;
Fig. 5 is the formed site of the utility model embodiment method for platemaking aspect graph;
Fig. 6 is the systematic schematic diagram of the utility model embodiment main exposure equipment.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, so that technician's of the same trade understanding:
As shown in Fig. 1-6, label means respectively:
Top cover 1, LED2, main frame 3, mask layer 4, photosensitive layer 5, site 6, base 7.
A kind of main exposure equipment for flexible printing plate plate-making is provided in the present embodiment, and its one-piece construction mainly consists of top cover 1 and main frame 3, and top cover 1 is located on main frame 3, and lateral margin and main frame 3 hinged.On top cover 1, be provided with the main exposure light source be used to the photosensitive layer exposed to the open air on the galley base substrate that exposes, and main frame 3 upper surfaces form the stayed surface of carrying galley base substrate.Different with existing platemaking equipment is that described main exposure light source comprises the LED2 that some dot matrixs are arranged and controls the topworks of described LED2 exposure height, raster image processor also is set in main frame 3.Those LED2 respectively connect a light modulator, the described topworks of described raster image processor control linkage and light modulator, and described LED is luminous, height, time shutter and exposure intensity expose optionally to control.
In addition, described main exposure equipment also comprises one or more be used to monitoring the camera of described galley base substrate position, and described camera connects described raster image processor.
In concrete embodiment, the modes such as electronically controlled motor, cylinder or manual adjustments can be selected to adopt by described topworks.
In conjunction with above-mentioned main exposure device structure, below for the method for platemaking that uses this main exposure equipment, be elaborated.Roughly the same with existing digital flexible plate making method, it mainly comprises the steps:
Step 1: preparation galley base substrate, this galley base substrate has photosensitive layer 5 and is placed in the mask layer 4 on this photosensitive layer 5;
Step 2: based on the picture and text shape on galley to be formed, optionally the described mask layer 4 of laser ablation, make ablated one-tenth and the transparent part of being with the embossing pattern form fit formed on mask layer 4, and then expose selectively described photosensitive layer.
Step 3: with the expose bottom of photosensitive layer 5 of back of the body exposure light source emitting ultraviolet light radiation, to form firm forme base 7 in the said elements bottom.
Step 4: with the described galley base substrate of main exposure light source exposure, the photosensitive layer that makes to expose to the open air on the galley base substrate partly is cured, thereby forms the site 6 of solidifying, uncured by the part that mask layer 4 covers.
Step 5:3. washes version to remove the uncured zone on described galley base substrate, and the aftertreatment technology such as dries, goes to glue to form flexographic printing plates.
Due to laser ablation in said method, back of the body exposure, to remove the steps such as uncured portion disclosed by many known technologies, for those of ordinary skills' technological means of commonly seeing, therefore repeat no more for its concrete ins and outs at this.
What be different from prior art is, in above-mentioned step 4, the main exposure light source has adopted some matrix LED exposure technique, and the concrete grammar of described main exposure comprises:
Set up the corresponding relation between described picture and text shape and each LED, described corresponding relation comprise each LED the dot number in corresponding picture and text shape area;
Based on described corresponding relation, control each LED and carry out the first main exposure, form the thickness oxygen barrier layer relevant to described picture and text shape with the photosensitive layer top being exposed to the open air;
Afterwards, based on described corresponding relation, control each LED and carry out the second main exposure, to form described site.
Concrete exposure for the first main exposure and the second main exposure in technique scheme limits as follows:
In the process of described main exposure, if when the dot number of a LED institute corresponding region was zero, it was not luminous from start to finish; Except not emitting led, in the first main exposure, the exposure of each LED institute corresponding region and its dot number negative correlation, in the second main exposure, the exposure of each LED institute corresponding region and its dot number positive correlation;
The exposure height of described LED in described the first main exposure is greater than the second main exposure, time shutter lower than the second main exposure, light intensity and is less than the second main exposure.
In technique scheme, institute's operation technique term " positive correlation (Positive correlation) " is released as follows with " negative correlation (negative correlation) " in this particular solution: if two variable change directions are identical, during a descending or ascending variation of variable, another variable is descending or ascending variation also, i.e. positive correlation; Otherwise, if the change opposite direction is negative correlation.In the present invention, during the first main exposure, the more exposures in the zone of site are less, i.e. negative correlation; During main exposure, the more regional exposure amount in site is larger, i.e. positive correlation.
It will be appreciated by those skilled in the art that, exposure is the integration of illuminance within the time that the galley billet surface receives, angle, the illuminance of due to LED in the first main exposure/second main exposure, irradiating are constant, and above-mentioned exposure and light intensity, time are linear, therefore:
When in described the first main exposure, when each LED light intensity is highly identical with exposure, the time shutter of each LED and its corresponding region dot number negative correlation.
When in described the second main exposure, when each LED light intensity is highly identical with exposure, the time shutter of each LED and its corresponding region dot number positive correlation.
When in described the first main exposure, when each LED time shutter is highly identical with exposure, the light intensity of each LED and its corresponding region dot number negative correlation.
When in described the second main exposure, when each LED time shutter is highly identical with exposure, the light intensity of each LED and its corresponding region dot number positive correlation.
In the first main exposure, the exposure of each LED highly is selected from 0.5-10cm, light intensity is selected from 400-1000mW/cm
2, the time shutter is selected from 1-60s; In the second main exposure, the exposure of each LED highly is selected from 10-20cm, light intensity is selected from 5-30mW/cm
2, the time shutter is selected from 10-20min.
In concrete embodiment, the mode of above-mentioned main exposure is as follows:
A) picture and text shaping input main exposure machine;
B) positioning printing version base substrate, make itself and picture and text form corresponding relation;
C) between picture and text shape and each LED light source, set up corresponding relation;
D) according to the corresponding relation of setting up, each LED light source, first at the height near the galley base substrate, is used the Exposure mode of short time, large light intensity to expose for the first time; Oxygen barrier layer in the photosensitive layer top formation one exposed to the open air the selectively variable thickness relevant with graph-text content.
E) according to the corresponding relation of setting up, each LED light source at the height away from slightly from the galley base substrate, is used Exposure mode long-time, little light intensity to expose for the second time, to solidify the picture and text part again.
The concrete grammar of described main exposure light source exposure also comprises: before setting up described corresponding relation, location is by galley base substrate after laser ablation.
In embodiment, the flexographic printing plates of making is 133 lines/inch, i.e. 52 lines/cm, every cm
2By 52 * 52=2704 point, formed; The main exposure light source is according to 1 LED/cm
2Install, 2704 points on the corresponding forme of each LED; According to the picture and text corresponding relation, just can calculate the number of putting on the forme that each LED light source is corresponding.
In this embodiment, LED the first main exposure height 2.3cm, the first main exposure light intensity is 600mW/cm
2Point on forme corresponding to certain LED is 2704, its the first main exposure time is 4s, and the point on forme corresponding to certain LED is 112, and its first main exposure time is 11s, point on forme corresponding to certain LED is 0, and its first main exposure time is that 0s(is namely not luminous).Here, in the situation that the light intensity of the first main exposure all equates, site is more, and the first main exposure time is shorter; Perhaps also can set under the identical time shutter, the more light intensity in site are lower.And site is 0 to be, be judged as and do not have content not need exposure, therefore form special case.
LED the second main exposure height 15cm, the second main exposure light intensity is 15mW/cm
2In this embodiment, point on forme corresponding to certain LED is 2704, its the second main exposure time is 17min, point on forme corresponding to certain LED is 112, its the second main exposure time is 13min, point on forme corresponding to certain LED is 0, and its first main exposure time is that 0min(is namely not luminous).
Abovely by embodiment, be elaborated for utility model of the present utility model intention and embodiment; but the utility model one of ordinary skill in the art be appreciated that; the above embodiment of the utility model is only one of preferred embodiment of the present utility model; for the length restriction; here can not all embodiments of particularize; any enforcement that can embody the utility model claim technical scheme, all in protection domain of the present utility model.
It should be noted that; above content is in conjunction with concrete embodiment further detailed description of the utility model; can not assert that embodiment of the present utility model only limits to this; under the guidance of above-described embodiment; those skilled in the art can carry out various improvement and distortion on the basis of above-described embodiment, and these improvement or distortion drop in protection domain of the present utility model.
Claims (4)
1. main exposure equipment for flexible printing plate plate-making, it is characterized in that: described main exposure equipment comprises the main exposure light source be used to the photosensitive layer exposed to the open air on the galley base substrate that exposes at least, and the raster image processor of the described main exposure light source of control linkage; Described main exposure light source comprises the LED that some dot matrixs are arranged and controls the topworks of described LED exposure height; Those LED respectively connect a light modulator, the described topworks of described raster image processor control linkage and light modulator, and described LED is luminous, height, time shutter and exposure intensity expose optionally to control.
2. a kind of main exposure equipment for flexible printing plate plate-making according to claim 1, it is characterized in that: described main exposure equipment also comprises that at least one is be used to monitoring the camera of described galley base substrate position, and described camera connects described raster image processor.
3. a kind of main exposure equipment for flexible printing plate plate-making according to claim 2, it is characterized in that: described topworks is electronically controlled motor.
4. a kind of main exposure equipment for flexible printing plate plate-making according to claim 2, it is characterized in that: described topworks is cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203498630U CN203311159U (en) | 2013-06-19 | 2013-06-19 | Main exposure equipment for platemaking of flexible printed board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203498630U CN203311159U (en) | 2013-06-19 | 2013-06-19 | Main exposure equipment for platemaking of flexible printed board |
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| Publication Number | Publication Date |
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| CN203311159U true CN203311159U (en) | 2013-11-27 |
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| CN2013203498630U Expired - Fee Related CN203311159U (en) | 2013-06-19 | 2013-06-19 | Main exposure equipment for platemaking of flexible printed board |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103331988A (en) * | 2013-06-19 | 2013-10-02 | 汪海洋 | Plate-making method of flexible printing plate and main exposure device |
| CN106502056A (en) * | 2015-09-03 | 2017-03-15 | 旭东机械工业股份有限公司 | laser direct exposure apparatus and method |
| CN113703290A (en) * | 2021-09-06 | 2021-11-26 | 深圳市先地图像科技有限公司 | Laser imaging device and laser imaging control method |
-
2013
- 2013-06-19 CN CN2013203498630U patent/CN203311159U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103331988A (en) * | 2013-06-19 | 2013-10-02 | 汪海洋 | Plate-making method of flexible printing plate and main exposure device |
| CN106502056A (en) * | 2015-09-03 | 2017-03-15 | 旭东机械工业股份有限公司 | laser direct exposure apparatus and method |
| CN113703290A (en) * | 2021-09-06 | 2021-11-26 | 深圳市先地图像科技有限公司 | Laser imaging device and laser imaging control method |
| CN113703290B (en) * | 2021-09-06 | 2024-05-28 | 深圳市先地图像科技有限公司 | Laser imaging equipment and laser imaging control method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20200619 |