[gentoo-user] Re: [OT] Re: PDF: convert to grayscale

[Grant Edwards]

On 2011-02-27, Nuno J. Silva <nunojsilva@×××××××.pt> wrote:
> Michael Orlitzky <michael@××××××××.com> writes:
>
>> On 02/08/11 08:50, Nuno J. Silva wrote:
>>> Does anyone know a tool (other than ghostscript) that is able to convert
>>> a PDF (or postscript) to grayscale?
>>
>> A laserjet? =)
>
> That makes me wonder... in a color printer, I expect it not to print any
> color when it has no color ink, but do grayscale printers apply some
> conversion internally, to make sure that e.g. plain cyan is still
> visible (instead of making it white)?

No.

No matter what transformation you use from a 3-dimensional space into
a 1-dimensional space, there will be sets of values that differ in the
3-dimensional space which map to identical values in the 1-dimensional
space.

-- 
Grant Edwards               grant.b.edwards        Yow! I'm in direct contact
                                  at               with many advanced fun
                              gmail.com            CONCEPTS.