Print Buying Direct

12647 and all that – Colour Management in Printing – Part 4 – 13th May 2009
Auditing print
PMC and its equivalents abroad categorically do not provide any consulting services, unlike Fogra and UGRA. Their qualifications are internationally endorsed by governments, which require absolutely squeaky clean auditor credentials. Auditors in the UK must complete a week-long course, followed by on the job training before they can be considered qualified. PMC has already run one of these courses, described by Mr Lindstrom as ‘very demanding and professionally executed’ and has another scheduled for June.

Jon Stack, scheme manager at PMC, explains that ‘the auditors on the course are not qualified to certify – it’s only accredited certification bodies that can do that. For those on the course wishing to become auditors, they first have to pass the course, and then go through on the job training with us to become fully qualified auditors’.
The PMC course is demanding, but that is as it should be for certification to have teeth and to make sure that print buyers really can trust it. Formal certification can also help printers in disputes since it requires documentation of their complaints procedures and quality assurance controls.

To be continued…

See Part one of – The magic circle – print, paper and recycling

Also part one of in Flight, preflight and post flight –

& Part one of this blog -

Print Buying Direct is one of the leading websites for buying print and is a brand of The Printing House Ltd, Crewe, Cheshire, UK

The Printing House are specialists and experts in Prospectus of all kinds – see our dedicated prospectus Website www.schoolprospectus.info – New on our Schools site – have a look at our new turn page technology (also known as digital editions)- have your prospectus or brochure online (digital prospectus or digital brochure) – but turn the pages as if it was paper.

Don’t forget to see our new offer – Budget Black and white leaflets – 10,000 Leaflets designed, printed and delivered for only £199

Best of all – don’t forget that our Banner Stands (pull up banners) are still only £99 plus delivery!

Business Cards (Business Card Printing) – £10 for 100 Full Colour Business Cards.

We’re still running our very popular Lettterheads Campaign. 2000 letterheads for only £125 in full colour, printed onto a quality 100gsm laser guaranteed paper. see our letterheads webpage for more info.

At The Printing House (Print Buying Direct) we are experts at helping you with the production of your newsletter, whether it be for your employees, customers or fellow club members. See our Newsletters web page for help and advice.

Keep an eye out for our new website for The Printing House Ltd, due for relaunch in May.

Our superb Wallet Folders are still on offer – see http://www.printbuyingdirect.co.uk/wallet-folders.html

12647 and all that – Colour Management in Printing - Part 3 – 12th May 2009
Commercial certification
Certification to ISO 12647 is not news. Fogra, the research arm of the German printing trade association BVDM, offers its FograCert service for certifying a proofing system’s compliance with 12647-7. It’s a snip at £6000. It also has certification for compliance to its Process Standard Offset (PSO) which is based on ISO 12647-2.

According to Fogra: ‘externally, this certificate provides proof of the quality a printing or media company is capable of an internally it ensures smooth production that helps to avoid complaints.’ In other words, you can wave your certificate at print buyers to prove you can hit the appropriate colour standard.

The Swiss organisation UGRA also certifies to Fogra’s PSO and both organisations train consultants to audit companies for certification. The problem with this is that these organisations provide consulting services and both also sell testing and measuring devices for colour print. It’s hardy an arm’s length accreditation service.

Instead of taking this route the BPIF’s technical committee has been working with a UK government recognised expert committee, led by Mr Sherfield. The committee has come up with a certification procedure intended to provide the guarantee print buyers need, without involving conflicts of interest. This model follows ISO 12647 and borrows heavily from ISO 9001, the standard that defines quality management for a business. Although this standard is not specific to the printing industry, many printers are ISO 90001 accredited already.

This one is defiantly relevant for digital printers, as Mr Sherfield explains: ‘Regarding validation and even formed certification for digital, this has to be based on the technology used. An HP Indigo can be process controlled in a similar way to an offset press in order to match ISO 12647-2. Other devices need to be treated as proofing systems, so ISO 12647-7 methods will work in this case. Using the maximum gamut is in effect a ‘house’ standard, but still needs validation. Most of the validation software for printing and proofs can use imported custom CMYK profiles as the validation standard’.

Much of the work that’s been done so far for the UK echoes work already completed in Sweden by the Swedish Printers’ Federation. This organisation began its accreditation efforts some 18 months before the BPIF and has been extremely active in funding and resourcing the development and promotion of its certification procedure. Their investment is already paying off, with an increasing number of printers requesting certification at the behest of customers keen to simplify print buying processes.

Paul Lindstrom, special consultant to the Swedish Printers’ Federation says that: ‘Besides offering customers a product specific quality guarantee, the printers often find that they reduce waste and errors, as well as shorten make ready times’.

In the UK, the expert committee has completed its work and is awaiting approval for its documentation from UKSA, the internationally recognised UK Accreditation Service. ISO has a standard (ISO 17021) for checking the certifiers themselves, which is what UKAS does.

In the UK there is only one company authorised to accredit printing companies for compliance to 12647 in addition to other international standards. Print and Media Certification (PMC). This works exclusively in the world wide paper, printing and publishing industries, providing assessment and certification services in the UK and elsewhere.

To be continued…

See Part one of – The magic circle – print, paper and recycling

Also part one of in Flight, preflight and post flight –

& Part one of this blog -

Print Buying Direct is one of the leading websites for buying print and is a brand of The Printing House Ltd, Crewe, Cheshire, UK

The Printing House are specialists and experts in Prospectus of all kinds – see our dedicated prospectus Website www.schoolprospectus.info – New on our Schools site – have a look at our new turn page technology (also known as digital editions)- have your prospectus or brochure online (digital prospectus or digital brochure) – but turn the pages as if it was paper.

Don’t forget to see our new offer – Budget Black and white leaflets – 10,000 Leaflets designed, printed and delivered for only £199

Best of all – don’t forget that our Banner Stands (pull up banners) are still only £99 plus delivery!

Business Cards (Business Card Printing) – £10 for 100 Full Colour Business Cards.

We’re still running our very popular Lettterheads Campaign. 2000 letterheads for only £125 in full colour, printed onto a quality 100gsm laser guaranteed paper. see our letterheads webpage for more info.

At The Printing House (Print Buying Direct) we are experts at helping you with the production of your newsletter, whether it be for your employees, customers or fellow club members. See our Newsletters web page for help and advice.

Keep an eye out for our new website for The Printing House Ltd, due for relaunch in May.

Our superb Wallet Folders are still on offer – see http://www.printbuyingdirect.co.uk/wallet-folders.html

Welcome to part two of our ‘How to design for print blog’ click here for part one- covering some more areas that graphics designers should be aware of. Please be aware that this blog is directed at design for digital printing, and whilst litho (offset) print has similar requirements there are some fundamental differences, so please talk to us first.

SAVING GRAPHICS FILES
While you are working on files, you’ll want to save them in the application’s native file format (i.e., Adobe Illustrator Document). When you are ready to place them in the page layout application, however, you might want to consider the PDF format for the best portability.

SAVING ILLUSTRATOR CS2 FILES

• Use the Save As feature to save files as PDF.
• Consult your print provider to determine if your work should be submitted flattened or with live transparency. By selecting [Acrobat 4 (PDF 1.3)] you will automatically flatten any transparency effects present in the file. Acrobat PDF 1.4 or higher formats will preserve live transparency attributes.
• PDF files can be edited later if the [Preserve Illustrator Editing Capabilities] option is selected.
• The PDF format can often provide better previews (than EPS) when placed in page layout applications.

SAVING FREEHAND MX FILES
Use the Export feature, not Save As, to export files as PDF from Freehand.

• Click the [Setup] button and use those recommendations shown in fi gure 3-13.
• In the [Convert Colors To:] pull down menu, be sure to select [CMYK and RGB]. Freehand will not modify CMYK images or RGB & CMYK native elements (note that it will, however, convert any RGB placed images to CMYK). Choosing [CMYK] will convert all RGB content to CMYK.
• Consult your print provider to determine if your work should be submitted flattened or with live transparency. By selecting [Acrobat 4 (PDF 1.3)] you will automatically flatten any transparency effects present in the file. Acrobat PDF 1.4 or higher formats will preserve live transparency attributes.
• Using a PDF format can provide better previews (than EPS) when placed in page layout applications.

SAVING GRAPHICS OR PAGE LAYOUTS AS EPS FILES
Though the PDF format is preferred, occasionally you may need to save files from Illustrator, Freehand, InDesign or QuarkXPress in the EPS fi le format. When saving graphics or page layouts, the following are recommended:

• Use TIFF 8-bit color preview.
• Do not assign a color space when possible and select [Leave Unchanged] or [As Is].
• Use [Transparency: High Resolution] when fl attening graphics with transparency.
• Embed all or complete fonts.
• Send all image data.
• Include CMYK PostScript in RGB fi les.
• Only use OPI if the printer requests it.
• Use Binary format.
• Use Adobe PostScript Language Level 3

IMAGE CONSIDERATIONS
OPENING IMAGE FILES
Though most images are either acquired through a digital camera or scanner, Photoshop is generally the first step in assigning the color space of an image.
If the Color Settings in Photoshop are set to [Ask When Opening] for Missing Profiles, you may encounter a window asking how to handle the color of an image being opened.

If no embedded profile is detected when the fi le is opened, you may choose one
of the following options:

• Leave as is—will not embed a color profile into the image. However, for operations that require a color space definition, Photoshop will use the RGB or CMYK Working Space defined in the Color Settings preferences (for example, when performing a Mode change between RGB and CMYK).
• Assign Working Space—assign the profile of the Working Space defined in the Color Settings preferences. Select this option when you want to consistently use one working space or if the working space matches the source space of the received file.
• Assign Profile—assign a specific profile if the source color space is known when the image fi le is opened.

Talk to us about which workflow to use. Assigning the right color space from the start will give you a better idea of how the file will look in print. Remember to implement monitor calibration and characterization as guided by your printer (hopefully us).

Things to consider in choosing a source profile:

• If the RGB or CMYK source space of the image is known, you can assign the profile that matches that color space or you can convert to the assigned working space.
• RGB images without the source color space information may require guesswork to determine the most appropriate source color space. sRGB has a smaller gamut but is a universal working space ideal for images coming from digital cameras and the internet (or destined for the internet). Adobe RGB has a wider color gamut and may work best for images that contain vivid colors.
• For unknown CMYK images, SWOP (v2) is recommended for US markets and Fogra or Euroscale for European markets.
• When working with documents that contain images from a variety of sources, discuss with us if one working space should be assigned to all the images or if the original source color spaces should be assigned individually.

If an ICC profile is detected you can either:

• Use the embedded profile. Photoshop will automatically use the embedded profi le when the Color Settings are set to [Preserve] under the Color Management Policies.

• Discard the embedded profile. If the embedded profile is believed to be
• inaccurate, convert to either an assigned profile or to the working space.

SIZE AND SCALE

• All images should be edited, rotated, cropped and sized in an imaging software application such as Adobe Photoshop. Do not re-size, crop, rotate or adjust images in page layout applications, if possible. Place images into the page layout at 100%.

• In order to obtain high-quality output, the recommended image resolution should be 300 dpi at the actual finished size. Scale images with bicubic sampling and crop all images in Photoshop. Do not use page layout applications such as QuarkXPress to make image size adjustments.
• Also note that submitting images with higher than needed resolution adds unnecessary processing time, creates larger files and may degrade image quality.
• For the best print quality, do not include transfer functions or screen angles unless directed to do so by the print provider. If the job requires specific screen angles or transfer functions, make sure to consult with us first.

SAVING IMAGE FILES
EMBEDDING COLOR SPACES
All images have a source color space. Whenever possible discuss with your print provider if you should embed that source color space (such as the camera or scanner profile). This can allow the RIP to perform the color conversion from the assigned color space to the printer’s color space. This workflow
can provide good color matches.

• Embed the correct source color space with each image saved in either TIFF or PS file format. Note that some printers may request images in JPEG format for jobs that are Variable or require faster productivity.

• ICC profi les in TIFF files generally cannot be embedded into the PostScript code on print. They are mainly used for output previews and to convert from one color space to another within applications such as Photoshop and QuarkXPress. The EPS format, however, can embed the color information (CSA) into the PostScript code and then be picked up by the RIP at the printer.

• Some printers opt not to utilize the embedded profi les and may end up stripping them from files. Be sure to talk over the color management settings and strategies with your printer.

SAVING PHOTOSHOP CS2 FILES— PHOTOSHOP EPS FORMAT

• If you want to embed the source color space of an image, use the EPS format.
• Embed both the ICC Color Profile and PostScript Color Management (PSCM) Color Space Array ( CSA) (see figures 3-18 and 3-19).
• Using the EPS format can also preserve colors that may otherwise be converted by an application such as Microsoft PowerPoint. When images are saved as TIFF or JPEG, the color may be converted prematurely in the page layout application. Colors in EPS format are generally preserved.

The CSA remains with the image when the EPS file is placed in the page layout application (or even with applications that are not color managed, such as Microsoft Word). The RIP can then be set to recognize the embedded CSA in the PostScript stream and perform the conversion from that embedded color space to the printer’s final destination color space.

Note:

• Always make your print provider aware that you have embedded color profiles in your files.
• When saving images as TIFF files, embed the ICC Color Profi le, if possible.
• Save the file in TIFF format without LZW compression.
• Check [Embed Color Profile] in the Save As window.

IMAGE COMPRESSION

• It is recommended that you do not use JPEG compression as it may cause unpredictable results.
• If upsampling is required, although this is not recommended, use bicubic.
• Images higher than 450 dpi should be downsampled using bicubic sampling.

Information supplied by The Printing House Ltd & Print Buying Direct, Crewe, Cheshire, UK

More to follow…