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| Deletions are marked like this. | Additions are marked like this. |
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| If you can measurit you can control it. | Typical cases are mentioned below. |
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| = Typical Mistakes = How we see color is different topic but usualy we have several cases. |
== Customer supply digital files == We make digital proofs and send them to the customer. If customer is not satisified with proofs he do rework and supply own proofs with our printing conditions, according [[https://www.iso.org/standard/57833.html|ISO 12647-2:2013]] [[https://www.fogra.org/en/fogra-standardization/standardization-pso/pso-e28093-the-process-standard-offset.html|Fogra PSO]] and [[https://www.bvdm-online.de/fileadmin/tundf/bvdm_Mediastandard_Print_2016.pdf|BVDM]] |
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| == WYSYWIG == Wysywig or what you see is what you get is big myth in computer era. |
Proof must be valid and have all required elements [[https://www.iso.org/standard/66426.html|ISO 12647-7:2016]], Fogra PSO and BVDM. |
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| Customer work on files and look on his monitor. Customer expect that what he see on his monitor printer must reproduce and if it's not it's printer fault. | * Fogra MW 3 * Job ticket * Measurement * Result in tolerances |
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| There is several reason why you can't achieve same color reproduction on printing press as you see on your monitor. Mainly there is mistakes which fall in different categories. | In this case product will be printed according [[https://www.iso.org/standard/57833.html|ISO 12647-2:2013]] |
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| == Device fault == Cheap low quality monitor |
== Customer Supply printed samples == We are happy to see your printed product, but we must warn you that we don't know how your product is printed before. |
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| Impromer monitor setup | It's too optimistic to expect to make reprint of unknown printing condition. |
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| Uncalibrated monitor | Some of few reasons are |
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| == Software fault == Improper color setup in desktop application, typical mistake North America General Purpose 2 |
* uknown paper * unknown ink * uknown press linearisation |
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| Invalid or legacy ICC profile selection, typical mistake SWOP Coated or Fogra 39 ICC Profile | Also it's impossible to compare 10.000 printed books with one sample. |
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| Wrong softproof setup | During print run there is fluctuation, some of them are visible, some not. |
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| Customer did not use softproof | In this case product will be printed according [[https://www.iso.org/standard/57833.html|ISO 12647-2:2013]] |
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| Approvment of digital data in Email program | == Customer approve on press == On first sight it's best sollution. Customer makes correction and immediately sees the results on press. |
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| Usage of Acrobat Reader insted of Acrobat Pro | Unortunatelly this is worst case. The color during drying changes its optical characteristics and real color appereance is achieved after 2-3 days after printing. We can't speak anymore about quality and repeatibility. |
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| Software bug in desktop application. | After that nobody, even we can't do reprint of you product. In case of some mistakes in finishing, or different batches of ink's we can't repeat job. |
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| == Document elements == Usage of thin line instead of exact line weight |
In this case product will be printed according [[https://www.iso.org/standard/57833.html|ISO 12647-2:2013]] |
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| Usage of artifical Bold and Italic | = Lamination = It's well known phenomenon that printed sheets change appereance after lamination. It's very hard to predict color changes. |
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| Wrong colorspace space RGB instead of CMYK | Influnce of this changes is lamination thickness, vendor, batch, ink color, ink thickness, ink drying, ink batch, paper. |
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| Usage of 4 color in text C=50, M=50, Y=50, K=80 | It's impossible to achieve 100% accuracy. Customer must to accept this variation. |
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| Usage CMY in text instead of K | We heard that some printer/customer takes wet sheets, make lamination and adjust ink thickness on the press. |
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| Small size of text 8pt in negative | This is big hoax and misleding of customers. We don't sell snake oil. |
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| Gray color build with CMY, i must say sometime it works, but it's very hard to avoid variation during print run | With all good will and technology we use we can't predict what will happen. |
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| Overprint white | Usualy because of diffuse effect with glossy lamination, intensive color appear darker. |
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| Combine image and vector elements from different desktop application on same page. For example combine | With matt lamination we have oposite effect, intensive color appear lighter. |
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| gray color CMY=75,62,60 in Photoshop and put on background InDesign. Sometime works but sometime not. == Document format == Wrong image format, gif, png Wrong image size, low resolution or too high image resolution Wrong image color space, RGB instead of CMYK Wrong document colorspace RGB instead of CMYK Too high sum of inks, typical mistake is content with C=100, M=100, Y=100, K=100 Usage of Pantone C color library and product is printed on uncoated media. == Document exchange == Wrong PDF export setup, typical mistake is AdobePDF preset PressQuality Thanks to our Workflow system we can detect most of this mistakes. Some of this we can fix but for smooth cooperation please follow our guidelines and recommendation |
In this case unlaminated product will be printed according ISO 12647-2:2013 [[https://www.iso.org/standard/57833.html|ISO 12647-2:2013]] |
Quality
Sometime is very hard to explain is it product printed well.
Quality becomes measurable, verifiable and reproducable!
Our quality control is based on industrial standard which is based on measurement.
Typical cases are mentioned below.
Customer supply digital files
We make digital proofs and send them to the customer. If customer is not satisified with proofs he do rework and supply own proofs with our printing conditions, according ISO 12647-2:2013 Fogra PSO and BVDM
Proof must be valid and have all required elements ISO 12647-7:2016, Fogra PSO and BVDM.
- Fogra MW 3
- Job ticket
- Measurement
- Result in tolerances
In this case product will be printed according ISO 12647-2:2013
Customer Supply printed samples
We are happy to see your printed product, but we must warn you that we don't know how your product is printed before.
It's too optimistic to expect to make reprint of unknown printing condition.
Some of few reasons are
- uknown paper
- unknown ink
- uknown press linearisation
Also it's impossible to compare 10.000 printed books with one sample.
During print run there is fluctuation, some of them are visible, some not.
In this case product will be printed according ISO 12647-2:2013
Customer approve on press
On first sight it's best sollution. Customer makes correction and immediately sees the results on press.
Unortunatelly this is worst case. The color during drying changes its optical characteristics and real color appereance is achieved after 2-3 days after printing. We can't speak anymore about quality and repeatibility.
After that nobody, even we can't do reprint of you product. In case of some mistakes in finishing, or different batches of ink's we can't repeat job.
In this case product will be printed according ISO 12647-2:2013
Lamination
It's well known phenomenon that printed sheets change appereance after lamination. It's very hard to predict color changes.
Influnce of this changes is lamination thickness, vendor, batch, ink color, ink thickness, ink drying, ink batch, paper.
It's impossible to achieve 100% accuracy. Customer must to accept this variation.
We heard that some printer/customer takes wet sheets, make lamination and adjust ink thickness on the press.
This is big hoax and misleding of customers. We don't sell snake oil.
With all good will and technology we use we can't predict what will happen.
Usualy because of diffuse effect with glossy lamination, intensive color appear darker.
With matt lamination we have oposite effect, intensive color appear lighter.
In this case unlaminated product will be printed according ISO 12647-2:2013 ISO 12647-2:2013