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← Revision 39 as of 2019-09-05 15:12:23 ⇥
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| Deletions are marked like this. | Additions are marked like this. |
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| Typical cases | Typical cases are mentioned below. |
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| Customer supply digital files. | == 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/user_upload/bvdm_MediaStandard_Print_2018.pdf|BVDM]] |
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| We make digital proof and send to customer. If customer is not satisified with proof he do rework na supply own profs with our printing conditions, according [[https%3A%2F%2Fwww.iso.org%2Fstandard%2F57833.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%3A%2F%2Fwww.bvdm-online.de%2Ffileadmin%2Ftundf%2Fbvdm_Mediastandard_Print_2016.pdf|BVDM]] | 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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| Proof must be valid and to have all elements required [[https://www.iso.org/standard/66426.html|ISO 12647-7:2016]], Fogra PSO and BVDM. | * Fogra MW 3 * Job ticket * Measurement * Result in tolerances |
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| Fogra MW 3, Job ticket, Measurement. | In this case product will be printed according [[https://www.iso.org/standard/57833.html|ISO 12647-2:2013]] |
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| In this case product will be printed according [[https%3A%2F%2Fwww.iso.org%2Fstandard%2F57833.html|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. |
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| It's too optimistic to expect to make reprint of unknown printing condition. | |
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| Some of few reasons are | |
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| = Typical Mistakes = How we see color is different topic but usualy we have several cases. |
* uknown paper * unknown ink * uknown press linearisation |
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| == WYSYWIG == Wysywig or what you see is what you get is big myth in computer era. |
Also it's impossible to compare 10.000 printed books with one sample. |
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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. | During print run there is fluctuation, some of them are visible, some not. |
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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 approve on press == On first sight it's best sollution. Customer makes correction and immediately sees the results on press. |
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| Impromer monitor setup | 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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| Uncalibrated monitor | 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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| == Software fault == Improper color setup in desktop application, typical mistake North America General Purpose 2 |
In this case product will be printed according [[https://www.iso.org/standard/57833.html|ISO 12647-2:2013]] |
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| Invalid or legacy ICC profile selection, typical mistake SWOP Coated or Fogra 39 ICC Profile | = 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 softproof setup Customer did not use softproof Approvment of digital data in Email program Usage of Acrobat Reader insted of Acrobat Pro Software bug in desktop application. == Document elements == Usage of thin line instead of exact line weight Usage of artifical Bold and Italic Wrong colorspace space RGB instead of CMYK Usage of 4 color in text C=50, M=50, Y=50, K=80 Usage CMY in text instead of K Small size of text 8pt in negative Gray color build with CMY, i must say sometime it works, but it's very hard to avoid variation during print run Overprint white Combine image and vector elements from different desktop application on same page. For example combine 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 |
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. 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 [[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. 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