09 EFI Designer Edition

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Para que RIP?Do ingls:Raster Image Processorou seja:Processador de imagemRaster (bitmap)

Gerenciamento de cores:- Perfis de referncia RGB(AdobeRGB, sRGB, AppleRGB...)- Perfis de referncia CMYK(SWOP, Euroscale, ISOCoated...)- Perfis de mdia(mdias HP, Hahnemuhle, EFI...)


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Color gamut differences RGB vs CMYK

Here you can actually see the difference between two colorgamut's.To print more accurately we need to use the correct renderiintent for the desired result.

Lets look at which rendering intents to use and in whatcircumstances.


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EFI Designer Edition 5.1Tela principal


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Preferncias do RIPGuia de coresa

Color tab

The settings you make in this pane directly affect the colorreproduction of your jobs.

Activate Color ManagementTo make color management settings, the checkbox "Activate ColoManagement" must be selected.

When the color management checkbox is not selected, many optiothis dialog are dimmed and you will not

be able to influence the color output of your job.

Color settings Color output mode

This option provides four different color output settings.1. Black and white print2. HP CMYK plus technology

This setting is selected by default when you select a printer that supports thisparticular feature. Otherwise, the setting is not available.

When converting a source RGB image to printable CMYK colors, some colorslonger accessible, as the range of colors reproducible using a printing press is msmaller than that of typical RGB devices. If such a press CMYK file is printedHP CMYK plus technology, CMYK colors are adapted to the range of colors t


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Rendering intents1. Perceptual (photographic) Preserves overall color

appearance In- and out of-gamut colors are

modified, so that the

relationship betweenneighboring colors remainsconsistent.

The white point of the sourcegamut is mapped to the whitepoint of the destination gamut.

Typically applied to thereproduction of photos

The perceptual (also called photographic) rendering inten

Perceptual allows an adoption of the source color space to thedestination color space, which is optimized for the perceptualappearance of images - at the cost of colorimetrical accuracy.

Both in-gamut and out-of-gamut colors are modified so that relatiobetween neighboring colors remain consistent. The white point ofsource color space is mapped to that of the destination color spacethe case of a CMYK printing device profile, this means that CMY0, 0, 0 is connected to the CIE color which is equivalent toCIELAB=100, 0, 0. The color of the unprinted medium (paper whignored and the transformation is "relative" to this color.

A typical application for this rendering intent is the perceptuallypleasing reproduction of photos.

If a source color space is larger than the destination gamut, the colcoordinates of the source color space are compressed to the smallegamut this is called gamut compression.


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Rendering intents2. Saturation (chroma) Vivid colors without accuracy Converts saturated source colors

to saturated destination colors. Scales source to destination

gamut and preserves relativesaturation. Used for business graphics

where bright and vivid colorsare more important than theexact relationship betweencolors.

The saturation (also called chroma) rendering intent

Saturation represents the amount of gray in proportion to the hue,measured as a percentage from 0% (gray) to 100% (fully saturatedOn the standard color wheel, saturation increases from the center tedge. The rendering intent for business graphics that maintains vivcolor at the expense of accurate color. It scales the source gamut todestination gamut but preserves relative saturation instead of hue, when scaling to a smaller gamut, hues may shift.

This rendering intent is primarily designed for business graphics, wbright saturated colors are more important than the exact relationshbetween colors (such as in a photographic image).


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Rendering intents3. Relative colorimetric Mapping colors colorimetrically

as exactly as possible In-gamut colors are not

modified, but mapped exactly.

Out-of-gamutcolors are replaced by thecolorimetrically nearest colorThe source white point ismapped to destinationwhite point.

Often used for images& photos to preservemore of the original colors.

WP WP

The relative colorimetric rendering intent

Relative colorimetric maps colors colorimetrically as exactly as poIn-gamut colors are not modified, but mapped exactly. Out-of-gamcolors are replaced by the colorimetrically nearest color (calledclipping to the closest reproducible hue), which the device can

reproduce. As with the perceptual rendering intent, the white point of the sourcolor space is mapped to the white point of the destination color sp(white on output is the white of the chosen medium, not of the souHere, it is taken into account that our eyes always adapt to the whithe medium we are viewing.


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Rendering intents4. Absolute colorimetric Color accuracy at the expense

of color relationships In-gamut colors are left

unchanged, out-of-gamut colorsare clipped.

Source white point is notmapped to destination whitepoint.

Aim: to maintain color accuracyat the expense of preservingrelationships between colors.

Used mainly for proofing tosimulate the output of oneprinter on a second device.

WP

The absolute colorimetric rendering intent

The rendering intent that leaves colors that fall inside the destinatigamut unchanged. Out of gamut colors are clipped. No scaling ofcolors to destination white point is performed, means that it doesnsource white to destination white. E.g. the source color gamut has

bluish white and the destination gamut a yellowish white, cyan is pinto white areas to simulate the white of the original white.

This intent aims to maintain color accuracy at the expense of preserelationships between colors, and is useful for seeing how output wlook on a non-neutral substrate.


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Rendering Intent:Relative Colorimetric As cores so mapeadas e as que coincidem no so trocadas

Relative Colorimetric This intent is best for images, such aslogos, where the original needs to exactly match the output.Colors that fall outside of the output device's gamut areconverted to colours at the edge of the gamut, which mayreduce the total number of colours available. For this reason,this intent should only be used when there are relatively fewcolours in an image.


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Rendering Intent:PerceptualTodas as cores so alteradas proporcionalmente para dentro do gamut

Perceptual This intent is best for photographic images. Therelationship between colours in the original is scaledproportionally to fit the output device's colour gamut. In otherwords, the original gamut will be rescaled to the target device.


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Rendering Intent:Saturation As cores mapeadas so foradas para a borda do gamut

Saturation This intent is best for images where true colourmatching is not as important as vivid colours. Colors outsideof the output device's gamut are converted to colours withinthe same saturation but with a different lightness. This intentmay be used to boost colours within a photographic image.


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Resumo:Rendering Intents

Relative Colorimetric

Absolute Colorimetric

Perceptual

Saturation

Match realcolor of

Pressesmedia


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Black point compensation (1/2)Disponvel somente em relative e absolute colorimetric


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Black point compensation (2/2)Disponvel somente em relative e absolute colorimetric


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Preferncias do RIPGuia de cores Configuraes avanadas

Usar somente tinta preta:-Text and images: todos os pontos com pelo menos 1% de K seroimpressos utilizando somente tinta preta;-Text only: todos os pontos com pelo menos 99% de K sero impressosutilizando somente preto.-Never (padro): todas as reas pretas sero impressas com acomposio CMYK de tintas disponvel.


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EFI Designer EditionColor Presets

possvel criar novos PRESETS com asconfiguraes de cor do cliente

Preferences->Color ->Color output mode

Photo Mximo gamut de cores do dispositivo utilizado Proofing Impresses destinadas provas de pr-impresso Business graphics Para impresses de escritrio (textos e grficos)No color management gerenciamento de cores desligado HP CMYK plus tenta resgatar os tons perdidos na converso RGB

para CMYK -> cores vvidas

Nota

In Preferences/Color/Reference Profiles is an option Color OutpMode. Here the user can select whether he wants to do have aPhoto Print, a Proof, a Black and white print or a print baon HP CMYK plus technology.

When using Photo Print, the document will be printed using tmaximum gamut of the output device. When using Proof, thedocument will be a proof for i.e. press matching. Selecting Blaand white print, the software will create a Black and White priHP CMYK plus technology will give a printout using HP techn(see EDE 4.1).

The order of the modes in the drop down list is alphabetical.


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RIP preference optionsLayout tab


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Preferncias do RIPGuia Gerala

Color tab










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Preferncias do RIPGuia Nesting (Posicionamento)a

Optimal space usage:as imagens so posicionadas para usar o mnimo de papel.Optimal cutting edges:as imagens so alinhadas para que possam ser recortadas

posteriormente com o mnimo de recortes.

Color tab










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Preferncias do RIPCores Spot


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Preferncias do RIPGuia Printer

1. Linearizao:Arquivo de

correo visualcriado pelo EFI Ink

Assistence;2. Calibrao:Calibrao de

cores realizada como densitmetro

interno daimpressora.

possvel ajustar paraque o software

lembre quando deveser feita a prxima

calibrao.


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EFI Designer Edition 5.1EFI Ink Assistant - Linearize


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Profile Connector Adicionando novos perfis de mdia

1. Digite o nome no papel a ser adicionado;2. Selecione a famlia/tipo do papel3. Selecione a qualidade de impresso na qual o perfil foi criado4. Adicione o perfil ICC gerado externamente (no caso da Z2100/Z3100,

basta exportar o perfil gerado na impressora e adicion-lo no campo

Profile)


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EFI Designer Edition 5.1Configuraes individuais de trabalho (1 de 3)


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Halftone Screen A Rosettesample

Each plane has its own angle. The combinations create the halftone screen.Rosette: Black 45o, Magenta 75o, Yellow 90o, Cyan 105o


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Date post:	07-Apr-2018
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09 EFI Designer Edition

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