[Alt-photo] sulphite papers

bobkiss caribsurf.com bobkiss at caribsurf.com
Mon Jan 15 16:26:35 UTC 2018

But I thought that most papers made from wood fibers had lignin in them which will degrade both the paper and the image on the paper over time. I have sent an email to Doug Ishimura at IPI and I will advise his response.

----- Original Message -----
From: "alt-photo-process-list at lists.altphotolist.org" <alt-photo-process-list at lists.altphotolist.org>
To: "Christina Anderson" <christinazanderson at gmail.com>
Cc: "alt-photo-process-list at lists.altphotolist.org" <alt-photo-process-list at lists.altphotolist.org>
Sent: Monday, January 15, 2018 12:15:58 PM
Subject: Re: [Alt-photo] sulphite papers

Fibers are classified into a number of groups.
Bast fibers are typically flax (linen), jute and I believe mitsumata and
gampi are in this group. Microscopically they are structurally similar.
Cotton and kozo are often grouped together and are referred to as "seed"
fibers, I've forgotten the proper term for these two.
Then we have hardwood and softwoods and straws etc,

Years ago (1977 or so) I did a microscopic review of the Japanese repair
papers being used in paper conservation to confirm the quality of fibers
being used and found that a number of the papers being sold as Japanese
papers had additions of Douglas fir fibers added to the Japanese kozo to
reduce the cost and increase the bulk of the paper.

The pure Japanese fiber papers always worked with the sensitizers I used.

On Mon, Jan 15, 2018 at 9:01 AM, Christina Z. Anderson <
christinazanderson at gmail.com> wrote:

> Siegfried.
> I never knew that photo paper was made from wood! Thank you for that
> tidbit! I never even thought, I suppose, about what photo paper was made
> from.
> What is “non-bast?”
> Chris
> Christina Z. Anderson
> *Contemporary Practices in Alternative Process Photography* series
> <https://www.routledge.com/Contemporary-Practices-in-Alternative-Process-Photography/book-series/CPAPP>
> On Jan 15, 2018, at 8:57 AM, Siegfried Rempel <siegfriedrempel at gmail.com>
> wrote:
> Properly processed fibers from wood and non-bast fiber sources can be used
> as evidenced by the commercial photo paper manufactures having used these
> fiber sources for years.
> Its quite possible that there are papers among your list that that will be
> archival and non-reactive with the light sensitive solutions we are using.
> On Mon, Jan 15, 2018 at 8:14 AM, Christina Z. Anderson via
> Alt-photo-process-list <alt-photo-process-list at lists.altphotolist.org>
> wrote:
>> Dear List,
>> Still working on paper testing and I had a question. Below is a list of
>> paper content that I have come across in 100+ papers.
>> I understand that gampi, kozo, cotton, linen, and mitsumata fibers are
>> all excellent and archival papers.
>> I am unclear about sulphite, bamboo, cellulose, high alpha cellulose.
>> This may be a question for an archivist (Kim DuBoise?).
>> Does anyone know the archival life of a wood pulp, sulphite paper, or
>> cellulose paper as compared to a cotton paper?
>> Chris
>> 10% cotton/ 90% cellulose
>> 100% alpha cellulose
>> 100% cellulose
>> 100% gampi
>> 100% kozo
>> 100% linen
>> 100% mitsumata
>> 100% rag
>> 100% sulphite
>> 15% cotton/85% alpha cellulose
>> 25% cotton/75% sulphite
>> 30% post-consumer materials
>> 50% cotton
>> 50% cotton/50% sulphite
>> 50% kozo/50% sulphite
>> 60% cotton/40% linen
>> 60% cotton/40% sulphite
>> 75% cotton, 25% high alpha cellulose
>> 75% cotton/25% esparto
>> 85% cotton/15% linen
>> 90% bamboo 10% rag
>> 90% bamboo/10% cotton
>> Cotton and synthetic fibers
>> Cotton/high alpha cellulose
>> Kozo/sulphite
>> Linen and cotton rag
>> Recycled chemical wood
>> _______________________________________________
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