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%!
% This is a sample prefix file for creating a PDF/A document.
% Users should modify entries marked with "Customize".
% This assumes an ICC profile resides in the file (srgb.icc),
% in the current directory unless the user modifies the corresponding line below.
% Define entries in the document Info dictionary :
[ /Title (Title) % Customise
/DOCINFO pdfmark
% Define an ICC profile :
/ICCProfile (srgb.icc) % Customise
def
[/_objdef {icc_PDFA} /type /stream /OBJ pdfmark
%% This code attempts to set the /N (number of components) key for the ICC colour space.
%% To do this it checks the ColorConversionStrategy or the device ProcessColorModel if
%% ColorConversionStrategy is not set.
%% This is not 100% reliable. A better solution is for the user to edit this and replace
%% the code between the ---8<--- lines with a simple declaration like:
%% /N 3
%% where the value of N is the number of components from the profile defined in /ICCProfile above.
%%
[{icc_PDFA}
<<
%% ----------8<--------------8<-------------8<--------------8<----------
systemdict /ColorConversionStrategy known {
systemdict /ColorConversionStrategy get cvn dup /Gray eq {
pop /N 1 false
}{
dup /RGB eq {
pop /N 3 false
}{
/CMYK eq {
/N 4 false
}{
(ColorConversionStrategy not a device space, falling back to ProcessColorModel, output may not be valid PDF/A.)=
true
} ifelse
} ifelse
} ifelse
} {
(ColorConversionStrategy not set, falling back to ProcessColorModel, output may not be valid PDF/A.)=
true
} ifelse
{
currentpagedevice /ProcessColorModel get
dup /DeviceGray eq {
pop /N 1
}{
dup /DeviceRGB eq {
pop /N 3
}{
dup /DeviceCMYK eq {
pop /N 4
} {
(ProcessColorModel not a device space.)=
/ProcessColorModel cvx /rangecheck signalerror
} ifelse
} ifelse
} ifelse
} if
%% ----------8<--------------8<-------------8<--------------8<----------
>> /PUT pdfmark
[{icc_PDFA} ICCProfile (r) file /PUT pdfmark
% Define the output intent dictionary :
[/_objdef {OutputIntent_PDFA} /type /dict /OBJ pdfmark
[{OutputIntent_PDFA} <<
/Type /OutputIntent % Must be so (the standard requires).
/S /GTS_PDFA1 % Must be so (the standard requires).
/DestOutputProfile {icc_PDFA} % Must be so (see above).
/OutputConditionIdentifier (sRGB) % Customize
>> /PUT pdfmark
[{Catalog} <</OutputIntents [ {OutputIntent_PDFA} ]>> /PUT pdfmark
........