Amazing, I can remember this argument in 1993/1994 when we were working on the Printer MIB…
I guess there are some questions which will never have a definitive answer… :)
R.
On Apr 20, 2012, at 8:17 AM, Petrie, Glen wrote:
> In fact, I believe we should introduce a new term
>> Color Printing
> Mono-Chrome Printing
> Mono-Colorant Printing
> B/W-Printing
>> This is much clearer
>> Glen
>>> -----Original Message-----
> From: ipp-bounces at pwg.org [mailto:ipp-bounces at pwg.org] On Behalf Of
> Petrie, Glen
> Sent: Friday, April 20, 2012 8:05 AM
> To: Michael Sweet; William Wagner
> Cc: ipp at pwg.org> Subject: RE: [IPP] WG Last Call - IPP Job and Printer Extensions - Set
> 3(JPS3)(April 9 through April 18, 2012)
>> Monochrome is defined as "the range of shades of a single Color to
> white" and not a single colorant and not just black.
>> In the days when we have just black/white printers, monochrome came to
> mean half-tone printing using the black colorant only; which is really
> binary printing (one colorant and the white of the media) using halftone
> technques to simulate the color "gray" (shading) versus true monochrome
> printing that prints using various shades of the actual color gray.
>> Today, """"Black"""" monochrome printing is printing the color gray over
> the range from black to white. Since gray is produced using all
> colorants, it is processed-monochrome that is important.
>> Another common case of actually monochrome is Sepia. The color sepia
> is not a single colorant but a single composite color (a combination of
> rgb).
>> So if you want a definition using a single colorant, then this binary
> printing using halftoning to simulation "shades" (intensity variations
> of the colorant).
>> Glen
>>>>> -----Original Message-----
> From: ipp-bounces at pwg.org [mailto:ipp-bounces at pwg.org] On Behalf Of
> Michael Sweet
> Sent: Thursday, April 19, 2012 6:02 PM
> To: William Wagner
> Cc: ipp at pwg.org> Subject: Re: [IPP] WG Last Call - IPP Job and Printer Extensions - Set 3
> (JPS3)(April 9 through April 18, 2012)
>> Bill,
>> We do, in fact, define "monochrome" as being 1 colorant, typically
> black. A vendor might choose to implement an IPP Printer that uses blue
> ink, for example, but I expect the mainstream usage to be black ink.
>>> On Apr 19, 2012, at 5:55 PM, William Wagner wrote:
>>> Michael,
>> My memory might be off, but although the distinction between
> monochrome and
>> process monochrome as referring to marking with a single colorant
> versus
>> obtaining that color from multiple colorants is right, I thought that
> we
>> used the term 'monochrome' rather than just 'black' to refer to
> one-color
>> printing, where that color was usually but not necessarily black. But
>> perhaps it is an unimportant distinction.
>> Thanks,
>> Bill Wagner
>>>> -----Original Message-----
>> From: ipp-bounces at pwg.org [mailto:ipp-bounces at pwg.org] On Behalf Of
> Michael
>> Sweet
>> Sent: Thursday, April 19, 2012 8:12 PM
>> To: James Cloos
>> Cc: ipp at pwg.org>> Subject: Re: [IPP] WG Last Call - IPP Job and Printer Extensions - Set
> 3
>> (JPS3) (April 9 through April 18, 2012)
>>>> James,
>>>> On Apr 19, 2012, at 2:30 PM, James Cloos wrote:
>>> Apologies for the stupid question, but I couldn't find an
> explanation....
>>>>>> For a colour printer, what is the difference between monochrome and
>>> process-monochome?
>>>>>> monochrome is black using 1 color (black).
>>>> process-monochrome is black using many colors (typically black plus
> varying
>> amounts of cyan, magenta, and yellow, although it can also apply to
> black
>> from just cyan, magenta, and yellow).
>>>> _________________________________________________________
>> Michael Sweet, Senior Printing System Engineer, PWG Chair
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