Digital BW, The Print

martin, that was the one that i was thinking of.  Sorry Diana, in my mind i
think of you and George as one (hopefully neither of you are offended.)
robert rex

At 04:31 AM 10/15/01 -0000, you wrote:
>  Robert,
> 
> I did not find any posts by George Coon. Diana York did post that 
> calcium carbonate is used along with other ingredients in Post #3096.
> 
> Martin
> 
> 
><> 
> wrote:
>> I think George Coon posted something about inkjet coatings on this 
> or
>>  As far as I know chalk or Calcium
>>  Gelatin can be used in 
> coatings or
>> in sizings (these are the types of coated papers JOhn Nollendorfs is
>> looking for as gelatin sized/coated papers seem to offer better
>>  other coatings my include inert
>> pigments and other chemicals (i think George was pretty specific in 
> his
>> previous post--perhaps Martin can locate this post in the archive).
>> the chalk being dusted off the paper is more a result (IN MY 
> OPINION ONLY
>> so take this with a grain of self-serving salt) of the quality of 
> the
>> coating and its adherence to the paper fibers.
>> have i helped to clarify your questions here?
>> sincerely
>> robert rex
>> 
>> At 02:40 AM 10/15/01 +0100, you wrote:
>>>  I know very little about coatings technology - but I have 
> noticed that firm
>>> brushing of Somerset Velvet Enhanced results in a very fine white 
> dust
>>> coming off the paper!!! This does not happen, to my eyes, with 
> Hahnemhler
>>> papers.
>>> 
>>> I wonder then, if SVE uses 'straight' chalk as a coating, and it 
> is this
>>> that encourages the dye to commute away from the surface and into 
> the
>>> paper... hence it's marked warming... whereas H* does something 
> different
>>> which is not so based around Calcium carbonate???
>>> 
>>> In other words, selection of paper coating will (as we already 
> know from
>>> experience) that coating will dramatically effect print 
> longevity, but that
>>> (perhaps) pigmented inks have a harder time as the dyes are 
> so 'likely' to
>>> handle a coating differently from the pigments.
>>> 
>>> It'd be great if someone like Robert could bring some data to this
>>> suggestion!!! ;)
>>> 
>>> Nij
>> 
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