MakingHPLargeFormatPhotoNegatives1_0

8/6/2019 MakingHPLargeFormatPhotoNegatives1_0

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Hewlett-Packard

MAKING HP LARGE FORMAT

PHOTO NEGATIVESVersion 1.0


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Hewlett-Packard, 2010. Page 2

Table of contents

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1 .INTRODUCT ION

The main purpose of this document is to describe a way of using HP DesignJet

Z3200 printers to make large format photo negatives, suitable for monochrome

alternative processes such as platinum/palladium and color processes such as dyetransfer or carbro.

Large format photo negatives are based on the fact that every inkjet color has a

different opacity in the ultraviolet spectrum. Consequently, every combination of color ink

printed on a transparent paper results in a specific density when used as a negative for a

printing process using ultraviolet light. In order to determine the best ink for this purpose,

internal tests were conducted on a HP DesignJet Z3200 printer. The results showed that

green HP ink is the best choice to control the amount of UV light filtered from a minimum

to a maximum intensity. The process described here was performed with the goal ofcreating feasible negatives for monochrome and color alternative process such as

platinum/palladium, carbon, cyanotype, gum, carbro, multicolor carbon, and tri-color

gum. Note that none of these processes (including dye-transfer) are colorimetrically

accurate, and it is not the intention of this document to change that. Instead, the main

purpose is to explain a way of working with a HP Z3200 printer to make the plate

negatives needed for these processes and let you enjoy expressing the beauty of your

image in the way you are used to, employing your favorite process and benefiting from

the control of a digital workflow.

Printing a large format photo negative with inkjet ink is and old concept. There is a

set of books and highly recommended methods that pioneered this. As explained above

the main goal when creating this solution was not to reinvent the wheel but to make the

process of printing large format photo negatives easier to the users and achieve the

maximum quality when with the HP DesignJet Z3200 printer.

If you want to know more about photo negatives and learn from the masters, do

not miss the books, methods explanations and materials linked here:

http://www.danburkholder.com/http://www.mikeware.co.uk/mikeware/main.htmlhttp://www.dickarentz.com/http://www.precisiondigitalnegatives.com/http://www.christopherjames-studio.com/http://www.bostick-sullivan.com/http://www.alternativephotography.com


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Inside HP printers, every media (as papers are referred to) is described with a file

carrying information about color and inks. This is what is referred to as a paper preset.

What we have done is to create a specific paper preset with certain custom characteristics

that will allow the final user to print a large format photo negative using transparent

paper. This document covers the full process and workflow. From a technical point ofview, what is inside this preset is a green ink separation that has been linearized in terms

of ultraviolet light opacity. The advantage of having this linearization is that when printing

a linear ramp of green ink values with this paper preset, the result will be a negative with

a near-linear response in any alternative process based on UV light. In certain cases,

some calibration may provide additional improvements. However, the tools needed to

perform this calibration are part of the standard printer software and hardware.

2 .SCOPE

The techniques presented here assume current, standard printer hardware and

firmware; consequently, any HP DesignJet Z3200 printer can be used for this purpose.

Some basic knowledge about digital photography and alternative processes is assumed

throughout. The purpose of this document is to explain how to use HP DesignJet Z3200

printer to print large format photo negatives. To find out more about photo negatives or

alternative processes, the links given in the previous chapter point the curious reader to a

wealth of useful information.


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3 .HP LARGE FORMAT PHOTO NEGAT IVE ADVANTAGES

When a ramp of nominally pure color is printed (e.g. a ramp from white to green or

numerically from R=255, G=255, B=255 to R=0, G=255, B=0), a printer uses more than

one single ink to create a smooth transition. This implies a different response to ultravioletlight in different parts of the ramp.

It is well known amongst professionals working

with photo negatives that in order to

compensate this variation in response a

correction curve has to be applied (usually

reducing the contrast) to the original image

before printing the negative. This curve would

typically be very aggressive and can end upaffecting details in midtones. A sample of a

common correction curve can be seen in Figure

1 on the left.

The HP large format photo negative paper

preset instead, uses a simple ink separation in

the printer, with pure green mixed with a small

quantity of photo black. HP green ink has, by

default, a relatively linear response to UV light.

However, in order to minimize any adjustment

needed at the image level, the UV-A (320-400nm) opacity of an ink ramp has been

measured. Using this opacity criterion the response has been mathematically linearized in

the internal printer path in order to have a truly linear response and thus the maximum

number of gray levels.

4 .INSTALL ING THE LARGE FORMAT PHOTO NEGAT IVE PAPER

Follow these steps to import the HP Photo Negative paper preset:

1.Go to Printer Utility > Color Center > Import Paper Preset

2.Click Import and select the provided file: HPPhotoNegative1_0.oms included

in the Large format photo negatives package (HPLargeFormatPhotoNegatives.zip)

Figure 1. Typical contrast correction curve


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Now that you have completed the procedure, load the paper in the printer and select the

new paper from the printer front panel: Main Menu > Paper Types List > Additional

Papers category.

5 .

LOADING F I LM. US ING PREMIUM CLEAR F I LM AND OHP F I LMP I C TO R I C O TR A N S PA R EN T PA PER S

The present solution has been performed using Premium Clear Film and OHP Film

Pictorico papers. Both papers work perfectly achieving a high D-Max in large format

photo negatives application.

The large format photo negative is printed on a transparent paper. The HP Z3200

Designjet printer models have sensors to detect the borders of the loaded paper using

reflectance measurements but in order to load transparent paper into the printer,

sometimes it is necessary to fool the printer in order to let it calculate the paper size.

Both, Premium Clear Film (http://www.premierimagingproducts.com) and OHP film

Pictorico (http://www.pictorico.com) papers are transparent papers (transparency

films). In tests performed with these two papers, this workaround was not needed

because the films have a milky color that allows to the printer sensors to detect the paper

automatically. Nonetheless, a workaround for other papers is described here for

convenience.

Loading transparent roll paper:

Simply add approximately 10 cm of

white tape to the right and left borders of

the roll before loading it into the printer.

The sensors use this strip, to detect the

borders and load the paper.

Loading transparent sheet paper:

When using A4 or A3 pages a possible workaround to load the page

is to put a plain white sheet of the same size as the final transparent

sheet under the transparent media and load both sheets together.

Note that the only purpose of the white sheet is to let the printer detect

the sheet size; hence it must be put under the transparent media.

Figure 2: Workaround to load a transparent roll in

any HP printer

Figure 3: Workaround to load a sheet of paper in any HP Printer


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6 .PREPAR ING THE SYSTEM FOR YOUR PROCESS : F IND ING THE

CORRECT OPACI TY

In this solution, the green ink acts as a color filter for ultraviolet light. The densest part

of the negative contains a maximum quantity of ink. This maximum ink must be able to

block UV light in such a way that the paper will be left blank after exposing it trough this

maximum ink combination. In order to reach a maximum level of opacity, which will be

different for every process, black ink is combined with the green one.

When a RGB image is sent to the printer, the Green channel in the image will be used

to form the final negative and the Red channel will be used to control opacity using

Black ink. Think of the Red channel as a kind of red filter that will control the maximum

opacity of the negative.

To find out how much black ink is needed in your process, a form of calibration

process needs to be performed first:

First, the correct exposure time for your process using your film must be determined.

This exposure time is also called the standard printing time. This time is calculated by

making a test strip using a piece of the negative film substrate. Every strip must contain a

portion of film substrate and a portion of paper not covered by the film. The exposure

time where the achieved black under the film is the same that you have on the paper will

be your standard print ing time .

Then a calibration strip must be printed using your standard printing time to know

which quantity of black in combination with green will yield a clean white on the paper.

The process is described below.

As explained above, the Red channel in the RGB image controls the quantity of black

ink, hence the maximum opacity of the photo negative. To know the optimum opacity for

the photo negative, print and expose a target with different levels of black at maximum

green. After this target is printed, you will have different whites corresponding todifferent opacities. The first one that gives 100% paper white will be the most reliable for

your alternative process.

The following sections explain this process step-by-step.


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6.1. CREATING THE TIFF TARGET

To create targets and measure them, the Color Measurement Tool is used. This tool

is included with the HP Printer Utility software and can be used to create custom

targets and measure them. Please, refer to the manual of the printer to know moreabout the Color Measurement Tool. To create the target, first open the Color

Measurement Tool.

Using the HP Printer Utility for Windows, select Color Center > Paper Preset

Management > Color Measurement.

Using the HP Printer Utility for Mac OS, select HP Color Center > Paper Preset

Management.

Select the paper type, then press the gear-wheel button at the bottom of the window(Fig.16) and from the drop-down menu select Color Measurement. Select the

workflow Export a color chart as a TIFF f or external printing

Figure 4: Exporting a color chart as a TIFF for external printing

You can now choose a name and location for your TIFF and click Continue. The

first time that you use the system to print the target it will not be included in the Color

chart name combo list. Press + and select the file 256StepsRedGreenRamp.txt

included in the Large format photo negatives package (HPLargeFormatPhotoNegatives.zip)


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Figure 5: 256StepsRedGreenRamp.txt

Select the appropriate paper size depending on the paper you will use.

Click Continue. The TIFF file will be rendered at the location specified in the first

step and the following message will appear: The selected color chart was

successfully exported. You can access the fi le at the following location:

The created target is a ramp with the maximum level of green in all the patches

and a level of black, which is linearly increasing patch by patch. If you open the .txt

file representing the target with a text editor you can notice how the red channel in the

file is controlling the photo black ink when printing.

Figure 6: TIFF image created with the 256StepsRedGreenRamp.txt


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6.2. PRINTING THE TARGET

Now proceed to print this TIFF as described in chapter 8. The printed chart should

look similar to the one shown in Figure 7 below.

Figure 7: Preview of a Green-Black negative with a li near ramp of Black at maximum Green.

This green chart negative can now be used to create a print made with your

alternative process using your standard printing time. For example, in the case of

a platinum print, the final paper print would look like the image shown in Figure 8

below.

Figure 8: The final print. Notice how Black i s helping Green to achieve maximum opacity.


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6.3. FINDING YOUR WHITE

In order to determine the white for your alternative process, it is not needed to

measure this chart; instead it can be found by visually searching for the first patch with

a blank paper white. The location of this patch determines the Red channel value thatyou will use every time you make a negative. In this sample, the red numbers show the

quantity of Red in the negative (consequently the quantity of black in the print) used in

every patch. In this sample the true paper white is achieved with a value of 200

(see Figure 9). The next chapter explains how this value is used.

Figure 9: Final print with numbers showing the Red value in the RGB image (Black value in the

printed negative). In this sample, the maximum white is achieved with a value of 200.


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7 .CREAT ING A NEGAT IVE FOR A MONOCHROME PROCESS

A description of the basic steps to print a large format photo negative for a

monochrome process such as platinum/palladium is given below.

7.1. PREPARING THE NEGATIVE

Assuming that you have a final image ready to be printed, now you need to create

its negative to send it to the printer. To do this, follow the steps below:

1.Open your image in Photoshop (or any other image editing package).

!2010, Manuel Angel Albarrn Moyo

Figure 10: Final B&W image ready to be printed.

2.Flip image horizontally: Image>Rotate Canvas>Flip Image Horizontal.3.Convert it to RGB (if it was a grayscale image): Image>Mode>RGB Color.

4.Invert the image: Image>Adjustment>Invert


Figure 11: Image horizontally flipped and inverted.

5.Now the Red channel must be modified to select the opacity needed (see

previous chapter) in your process:


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a.Select the Red Channel and fill it with black.

Figure 12: Fill ing the Red Channel with Black.

b.Open Curves dialog and modify the entire Red Channel to indicate the

opacity calculated in the previous chapter (note that in our sample the

maximum opacity was reached using a value of Red=200). To modify the

Red Channel, open the Curves dialog, be sure that in the Show Amount

of: option the selected value is Light (0-255), then in Input enter 0 and in

output enter the Red value obtained in the previous chapter (200 in the

example).

Figure 13: Indicating the opacity level needed.


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c.The image negative is ready to be printed and can be sent to the printer as

described in chapter 8.

7.2. CREATING THE FINAL IMAGE

The printed image on transparent media can then be used as a photo negative for

the monochrome process of choice (e.g.: platinum/palladium), see Figure 14 for an

example print.


Figure 14: Final platinum/palladium printed image

8 .SENDING THE IMAGE TO PR INT

Load the transparent media (as explained in chapter 5) and select it in the printer as

Large format photo negative paper (read chapter 4 on how to install this). Selecting the

correct paper type via the printers front panel at media load is crucial for correct results.

If the printer driver is used to send the image to print, make sure to select no color

management in the application used to print the image and application color

management in the driver. The printing parameters must be maximum quality, no

gloss enhancer and more passes. The easiest way to print the photo negative is to

submit it directly to the printer (this option is only available on PS printers) via the

Embedded Web Server (EWS). Figure 15 below illustrates the settings to use when

printing using the EWSs job submitter interface.


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9 .CHARACTER IZ ING DENS I TY RESPONSE

In order to fine-tune the response of the negatives for a particular alternative process,

it might be necessary to characterize the printer for this purpose. The purpose is to obtain

a linear visual response when a linear gray ramp of values is sent to the printer.

To achieve the printer characterization, an RGB-linear ramp will be created, measured

and then used to linearize the printer response in Luminance or density. To do this, use the

file 21StepsRamp.txt that can be found in the large format photo negatives solution

package (HPLargeFormatPhotoNegatives.zip):

CGATS .17O RIGIN ATO R "HEWLETT PACKARD"CREATED " THU O CTO BER 8 10 :00 :00 2009 "DES CR IP T IO N "21 S TEPS GRAY RAMP" N UMBER_O F_F IELDS 4

N UMBER_O F_S ETS 21 BEGIN _DATA_FO RMATS AMPLE_ ID RGB_R RGB_G RGB_BEN D_DATA_FO RMATBEGIN _DATA

1 0 0 0 2 12 12 12 3 25 25 25

4 38 38 38 5 51 51 51 6 63 63 63 7 76 76 76 8 89 89 89 9 102 102 102 10 114 114 114 11 127 127 127 12 140 140 140 13 153 153 153 14 165 165 165 15 178 178 178 16 191 191 191

17 204 204 204 18 216 216 216 19 229 229 229 20 242 242 242 21 255 255 255 EN D_DATA


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9.1. USING THE COLOR MEASUREMENT TOOL

The next step is to create a TIFF image file using this chart data file and the Color

Measurement Tool. To open the Color Measurement Tool, first open the Printer

Utility, select Paper Preset Management, click on the gear-wheel at the bottom of thewindow and select Color Measurement from the pull-down menu.

Figure 16: Opening Color Measurement Tool

9.2. CREATING THE TIFF FILE (UPLOADING THE TARGET DATA FILE

AND MAKING THE FINAL TIFF)

In order to create the TIFF file of the target described in the previously described

text file, you will need to:

1.Select Export a color chart as a TIFF for external printing and click Choose

and type in a name for the final TIFF file.


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Figure 17: Exporting a color chart as a TIFF for external printing

2.Choose a name and location for your TIFF and Click Continue. The first time that

you use the system to print the gray ramp, it will not be included in the Color

chart name combo list. Press + and select the file: 21StepsRamp.txt

Figure 18: Selecting a color chart

3.Select the appropriate Paper size depending on the paper you will use. If you

want to measure the target using the printer spectrophotometer, bear in mind the

minimum size of an A4 sheet. (210x297 mm)


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4.Click Continue. The TIFF file will be rendered at the location that you specified

in the first step. The following message will be displayed The selected color chart

was successfully exported. You can access the file at the following location:

5.Open the TIFF file created and prepares it for printing.

(See how to prepare a negative for a monochrome process in chapter 7)

9.3. PRINTING THE ALTERNATIVE TARGET

In order to print the target on a transparent media, to use it later as a large format

photo negative, follow the steps described in chapter 8.

Once the negative is printed, go ahead and make the print using the alternative

process of your choice, for example using platinum printing.

Do not modify the TIFF file in any way before printing. The printed chart should be of

the correct size; the simplest way to achieve this is to print it on a paper size larger than

the chart and then cut the paper after printing as indicated by the crop marks.

9.4. MEASURING

1.Cut the paper using the crop marks.

Figure 19: Before measuring the target make sure its size is that of an A4 sheet.

2.Load the print in the media tray of the printer. (top area in fig. 19 is going first)


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3.Open the Color Measurement Tool (accessed through Paper Preset

Management and the gear-wheel as before).

4.Select Measure a color chart previously printed

5.Click Continue.

6.In the Color chart name combo list, select your target: 21 Steps gray ramp.

Figure 20: Selecting a measurement type

7.In Path to file, select the location and filename where you want measurements to

be saved by clicking on Choose.

8.Click Continue.

You must see a message saying: Please wait while the printer measures the color

chart The printer will measure every patch and will write the results of the

measurements in the chosen file and location.

Note that the spectrophotometer needs some time to warm up.

9.5. LINEARIZING THE OUTPUT

As explained before, the internal curve of the green ink has been modified in

order to have a linear response under ultraviolet light. Note however that different

processes have a different response under the ultraviolet spectrum range and the final

ramp printed with a particular alternative process need not be perfectly linear from a

perceptual point of view.


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The first goal is for linear output where say, 60% gray lay-down has twice the

visual density as 30% lay-down. After measuring the ramp printed in your alternative

process as explained in the previous chapters, the spectrophotometer will give you the

density of every color channel and the luminosity for every target patch. You can

linearize the output using different criteria:

a.Using Luminosity values. (The internal response to Green ink when using UV light

has been linearized using this criterion).

b.Using Density values.

Consider an exaggerated example to understand better how to perform this

linearization process. Imagine that after measuring 21 linear step densities of a

platinum/palladium print the next set of density values are obtained:

Density values from measuring a 21 steps gray ramp as described in the previous chapter.

The goal of linearization is to achieve a straight line instead of the clearly non-linear

curve in Figure 22. To do this, a characterization curve that is the inverse of the one in the

above figure will need to be applied to the original image to compensate for the non-

linearity.

0.08070000261068340.08720000088214870.1027999967336650.1145000010728840.1414999961853030.1659000068902970.2099999934434890.2502999901771550.313499987125397

0.3619000017642970.4268000125885010.5055000185966490.6075000166893010.7249000072479250.8087999820709230.9399999976158141.052800059318541.185299992561341.242799997329711.337700009346011.37220001220703

Figure 21: Graph representing gray levels vs. density values.


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To calculate the inverse of the curve measured with the spectrophotometer, some

computation needs to be performed, however, the inverse can also be corrected

manually, using any software that has the capability of editing curves (such as

Photoshop).

9.6. SCALING DENSITY VALUES

Working with curves in Photoshop the density values have to be scaled in a

correct range (0 to 255). Scaling values to the correct range can be done using the

following, simple formula:

Scaled value = (original value minimum value) * 255 / (maximum value minimum

value)

In our specific sample, the formula will be:

Scaled value = (original value - 0.0807000026106834) * 255 /

(1.37220001220703 - 0.0807000026106834)

The table below shows the result of applying the previous formula to the column of

densities and the same values rounded to the nearest integer value:

Patch number Linear gray value

(Equidistant values)

Read values scaled in

[0,255] range

Read values scaled in [0,255]

range (integer format)0 0 0 01 12 1.283391055 12 25 4.363529585 43 38 6.673634955 64 51 12.0046444 125 63 16.82230037 166 76 25.52961473 257 89 33.48664073 338 102 45.9651534 459 114 55.52148606 5510 127 68.33565768 6811 140 83.87456699 83

12 153 104.0139393 10413 165 127.1939605 12714 178 143.7595768 14315 191 169.6643415 16916 204 191.9361306 19117 216 218.0975574 21818 229 229.450636 22919 242 248.1881528 24820 255 255 255

Figure 22: Scaling density values


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9.7. CREATING THE INVERSE CURVE

From the above calculation, creating the inverse curve is straightforward: the blue

values in the table will be the input of the inverse curve values and the red values will

be the output. You do not need to use the full set of values but a subset of them thatlets you to create a smooth curve.

Open the Curves dialog in Photoshop again and plot the set of values that you

have measured. In our sample, we will see that for example the values:

(0,12,25,55,83,104,127,143,169, 218,229,255)

are located in these corresponding positions:

(0,50, 76,114,140,153,165,178,191,216,229,255)

These values define the characterization curve for the chosen process and

correspond to the mapping defined between the second (red) column and the last

(blue) column in the table shown in Figure 22 above. The result if the curve in Figure

23 below.

Figure 23: Inverse curve


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Now this curve can be saved for future use (click on the preset options button in

Curves Dialog). The next chapter explains how this linearization curve is applied.

10 .CURVES USAGE INSTRUCT IONS

The Curves window (see Fig: 23) in Photoshop is mapping all 256 input tones to

output tones. When the Curves dialog is open, Photoshop defaults to mapping the

input tones 1:1 to the output tones (i.e. the default is a linear mapping). Instead, to apply

the correction curve calculated in previous chapter:

1.Open Curves from: Image > Adjustment > Curves

2.Load the curves file created as explained in the previous chapter

3.Accept the curve by clicking OK


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11 .COLOR PROCESSES

The negatives for a trichromatic process such as as dye-transfer or tri-color Carbon

or Carbro can be created using a similar workflow to the one described for monochrome

processes. The tri-color workflow has not been tested extensively. Below is a description ofthe basic steps to print the separation photo negatives for a CMY color process such as

dye transfer or carbro for example. These basic steps can be used as a starting point for

more experimentation in the future.

11.1.SEPARATING THE IMAGE INTO R, G AND B CHANNELS

To create the negatives for a trichromatic process, you need to split your image

into the basic RGB channels and create a negative for every channel. These negatives

will represent the quantity of CMY colors of your final print.

To split the channel of your image, go to the Channels window, click on the

arrow at the top right of the window and select Split Channels in the channels menu.

Three new image files are created, each being a grayscale representation of the

original images color channels, with .Red, .Green, .Blue suffixed to the filenames.

Figure 24: Split t ing channels


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11.2.PREPARING AND PRINTING THE CHANNELS (DO THIS FOR

EVERY CHANNEL)

For each of the grayscale files representing a color channel, proceed as described

in chapter 7. Likewise, for each grayscale file representing a color channel, print thenegatives as described in chapter 8.

The image representing the Red component will be the Cyan negative, the one

representing the Green component will be the Magenta negative and finally the image

representing the Blue component will be used as the Yellow negative in your tri-color

process.


Figure 25: Final image made with a CMY trichromatic process

12 .A PL Y I N G A PR O F I L E TO YO U R A L TER N A T I V E PR O C ES S

A color alternative process can be profiled as described in chapter 13. The result of

profiling the process is an .icc file that characterizes the gamut of the alternative processand establishes a colorimetric relationship between the RGB channels and final printed

output. This chapter explains how to apply the calculated profile to an image just before

splitting the channels.

To apply the ICC profile, open the image and go to the Edit > Convert to Profile

dialog. The Source Space label shows the profile that is attached to the original image

(AdobeRGB in our sample). The Destination Space will be the alternative process color


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profile that was calculated as described in chapter 13. In order to know how to install this

profile and make it visible to Photoshop, please read chapter 14. Use the Conversion

Options as shown in the figure below.

Figure 26: "Convert to profile" dialog and options.

If the printer profile is applied in Photoshop as described (converting to the profile),

Photoshop will also embed the profile inside the image file. When the printer finds a

profile inside an image, it tries to convert the data in the image using the embedded

profile (the printer does not know that we applied the profile before) and the print will

have double color management. To avoid this, after running profile conversion, you must

delete the embedded profile of the image selecting Edit > Assign Profile > Dont Color

manage this document.


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13 .CREAT ING A PROF I LE FOR YOUR TR ICHROMATIC PROCESS

Please note that this workflow is only available in Z3200 printers.

13.1.PRINTING THE TARGET

Print the three channels of the chart_rgb_A3.tiff provided in the large format photo

negatives package (HPLargeFormatPhotoNegatives.zip):, using your film paper as described

in chapter 11. Notice that the final target made with the alternative process of choice

must be exactly DINA3 size printed with perfect registration. Some dotted lines have

been added to the target file to guide the cutting process. The simplest way to achieve

this is to print it on a paper size bigger than DINA3 and then cut the paper after

printing as indicated by the crop marks.

13.2.MAKING THE FINAL TARGET

After printing the three negatives for C, M, and Y, use them

to make the final target with the selected alternative process.

Figure 27: Profiling target printed with an alternative process.

13.3.CREATING THE PROFILE

To measure the target and create a profile:

1.Cut the paper using the crop marks (as described in chapter 9).

2.Load the print in the media tray of the printer. (top area in fig. 29 is going first)

3.Open the Color Measurement tool from the Printer Utility.

4.Select Paper Preset Management.5.Select the photo negative paper. Press the gear-wheel and select Profile

paper. Unselect Print ICC profiling chart as the print used for profiling will

be the one made with the alternative process as explained above.


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Figure 28: Scanning the profiling chart and creating an ICC profile

6.Click on Continue, choose a name for this profile and make sure that the

Gloss Enhancer checkbox is unchecked.

7.Click Continue.

The target will be measured and the profile will be created and attached to the

photo negative paper preset.

13.4.EXTRACTING THE PROFILE

1.Open Printer Utility.

2.Select Paper Preset Management in the HP Color Center

3.Select the paper where the profile is stored and click on the gear-wheel and

select the Export ICC Profile option as shown below:


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Figure 29: Exporting an ICC profile

4.Select a name and a destination for the new profile and save it.

5.To know how to store this profile in the system and how to use it, please refer

to chapters 14 and 12.


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14 .F INAL NOTES AND HINTS

14.1.INSTALLING THE .ICC PROFILE

The ICC Profile file must be placed in the appropriate folder for your software tobe able to see it and use it correctly. Follow these steps:

On a PC running Windows: right click on the profile and select Install Profile

On a Mac: Copy and paste the profile to the folder: /Library/ColorSync/Profiles

14.2.DOUBLE CHECKING THAT COLOR MANAGEMENT IS DISABLED

When opening the image, you will encounter Profile Warnings if you have

checked any of the Ask When Opening boxes in the Color Management Policiessection of the Photoshop Color Settings preferences. Be sure that Discard the

embedded profile (dont color manage) and Leave as is (dont color manage) are

always the options selected.

Figure 30: Embedded profile mismatch warning

Figure 31: Missing profile warning


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Figure 32: Color sett ings

15 .DISCLA IMER

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