Multiple localization method in a kind of registration printing
Technical field
The present invention relates to printing chromatography technical fields, refer in particular to multiple localization method in a kind of registration printing.
Background technique
Web printing equipment is high-efficient because its speed is fast, printing quality stable and be widely used in press, roll up
Coil paper also has oneself unique individual character, is exactly continuous operation because being roll web, and centre is not interrupted, mutual position between that colour cell
It just needs to be aligned, not so design and color will become, unlike sheet-fed guarantees the position between every colour cell by mechanical gripper
Relationship, because of continuity, centre cannot stop for web printing, shut down the material that primary front and back just needs 200 meters or so
Waste, so the position between colour cell is corresponding very crucial with regard to what is shown, major part Chromatic Printing Control System is machine startup at present in industry, operation
Personnel push from the first color of foremost by color pressure roller, are then printed with color on paper tape, and operator is manually needing chromatography
The mobile door of color lump in, need to operate from the first color of front to colour cell below, after being all pulled in door all color lumps, because rolling up at present
The hardware distance of two probes of coil paper Chromatic Printing Control System is 20mm, so only manually between two color lumps for needing chromatography
Distance adjust in 20mm or so, could start chromatography, not so equipment has no idea to be identified, beginning carried out in operator control panel
Chromatography relationship carries out chromatography, and after set is printed, then hoisting machine speed starts normally to produce, and this mode is because being manually to be grasped
To make, speed is relatively low, and it is fast invisible, and printing effect is bad under low-speed situations, as the more equipment of color colour cell, needs
It wants operator to run back and forth, even if the operative employee that operation is more skilled, starts also at least to need to adjust 4-5 when chromatography every time
The length of printing equipment could complete chromatography work, and it is big that this mode does not only result in labor intensity of operating staff, and cannot achieve
Accurate chromatography.
Summary of the invention
It is an object of the invention to be directed to the existing state of the art, multiple localization method in a kind of registration printing is provided, is led to
It crosses multiple editions width and carries out multi-contrast, the smallest execution amount of Select Error is adjusted, and chromatography is more accurate, high-efficient.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
The present invention is multiple localization method in a kind of registration printing, before printing to being numbered to color block on printing plate,
Image scanning is carried out to all color lumps after each printing process in one print cycle, forms multiple images version width, each version
Color lump quantity in width is incremented by by print order, finally has the image version of target color lump by system identification according to chromatography relationship
Width, and the error amount in these image version width between target color lump and chromatography relationship is calculated, system passes through error amount adjusting sleeve
The execution amount for printing executing agency, realizes accurate chromatography.
In above scheme, relationship of the chromatography relationship between initial chromatography execution amount and target chromatography execution amount, wherein just
Beginning chromatography execution amount need to be before printing starts in input system.
Further, target chromatography execution amount is determined by the alternate position spike between target color lump and benchmark color lump, and position is
It is longitudinal at a distance from transverse direction between two color lumps.
Further, on print cycle, that is, printing plate each color lump print cycle, if printing plate colouring number of blocks be M, one
Print cycle forms M or M+1 version width according to the quantity of color lump.
In each version width of first print cycle, first color lump that system is shared using in each version width as benchmark color lump,
All target color lumps compare multiple target chromatography execution amounts that obtain with benchmark color lump, and each target chromatography execution amount is and just
Beginning chromatography execution amount compares, Systematic selection and the smallest target chromatography execution amount of initial chromatography execution amount error, and with this
Initial chromatography execution is adjusted to measure to form practical chromatography execution amount.
Second print cycle to the n-th print cycle, system with chromatography successive two color lumps of sequence in each version width into
Row comparison is formerly then benchmark color lump, it is rear be then target color lump, the target color lump and reference colours in same period in each version width
Block compares to obtain at least one target chromatography execution amount, and target chromatography execution amount is compared with initial chromatography execution amount,
Systematic selection and the smallest target chromatography execution amount of initial chromatography execution amount error, and initial chromatography execution is adjusted with this and measures to be formed
Practical chromatography execution amount.
The invention has the benefit that the present invention is covered by presetting printing plate color lump identiflication number, by number with initial
It prints in the equal input system of execution amount, the position of color lump can be arbitrarily arranged according to the typesetting situation of the space of a whole page, in multiple printing processes
Rear is respectively provided with camera and carries out image scanning, can form multiple images version width, carries out multi-contrast by multiple editions width, selection misses
The smallest target chromatography execution amount of difference is adjusted initial chromatography execution amount, forms practical chromatography execution amount, can be realized with this
Full-automatic high precision chromatography.This method does not need operator and does any Workforce Operations and processing, only need to relevant parameter is defeated
Entering control system can all be automatically performed, and not only save manpower and material resources, reduce production cost, and can be at high speeds
Chromatography is completed, efficiency greatly improves.
Detailed description of the invention:
Accompanying drawing 1 is the structural representation of the present invention;
Attached drawing 2 is the image comparison of each version width in the same version width group of the present invention.
Specific embodiment:
Multiple localization method in a kind of registration printing of the invention, before printing to being numbered to color block on printing plate,
Image scanning is carried out to all color lumps after each printing process in one print cycle, i.e. camera scanning is shot, and camera is matched
It is equipped with light source, shoots to form multiple images version width by camera, the color lump quantity in each version width is incremented by by print order, last root
There is according to chromatography relationship by system identification the image version width of target color lump, and calculate target color lump and set in these image version width
Error amount between print relationship, system are adjusted the execution amount of chromatography executing agency by error amount, realize accurate chromatography.
Specifically, relationship of the chromatography relationship between initial chromatography execution amount and target chromatography execution amount, wherein initial set
Printing execution amount need to be before printing starts in input system.Target chromatography execution amount is by the position between target color lump and benchmark color lump
Difference determines, longitudinal at a distance from transverse direction between position i.e. two color lumps.
The print cycle of each color lump on print cycle, that is, printing plate, if printing plate colouring number of blocks is M, a print cycle root
M or M+1 version width are formed according to the quantity of color lump.The quantity of version width depends on whether paper tape is art post paperboard, if art post paperboard, then the
One color lump is benchmark color lump, then does not need image scanning before printing, and each image scanning is after color lump printing, therefore
And version width quantity is identical as color lump quantity, is M;If paper tape originally has color lump, need to carry out image scanning before printing,
Therefore version width quantity has more one compared to color lump quantity, is M+1.
In each version width of first print cycle, first color lump that system is shared using in each version width as benchmark color lump,
All target color lumps compare multiple target chromatography execution amounts that obtain with benchmark color lump, and each target chromatography execution amount is and just
Beginning chromatography execution amount compares, Systematic selection and the smallest target chromatography execution amount of initial chromatography execution amount error, and with this
Initial chromatography execution is adjusted to measure to form practical chromatography execution amount.
After first print cycle, paper tape enters normal high speed and covers watermark patterns, therefore in second print cycle
To the n-th print cycle, system is compared with two successive color lumps of chromatography sequence in each version width, is formerly then benchmark color
Block, it is rear be then target color lump, the target color lump and benchmark color lump in same period in each version width compare to obtain at least one
A target chromatography execution amount, target chromatography execution amount are compared with initial chromatography execution amount, and Systematic selection is held with initial chromatography
The row amount the smallest target chromatography execution amount of error, and initial chromatography execution is adjusted with this and measures to form practical chromatography execution amount.
Certainly, the above is only better embodiments of the invention, and use scope of the invention is not limited with this, therefore, it is all
It is to make equivalent change in the principle of the invention should be included within the scope of the present invention.