Recent content by sol bol

KORAKS Before I reply if I do, to your very intelligent arguments and keen observations on matters of the present conversation, maybe the post below will help to clarify some matters, but as is usually the case it may lead to new questions. Instead of carbon, my ligh sensitive coffee of latest...

i will try to help you if you explain clearly what you need to know ANSWERS: The light sensitive coffee paper is exposed in contact under a negative the same size as the final print. The spectral radiation of the light sensitive coffee paper is mainly UV Radiation. It can be handled WITH NO...

Sure Am concerned with the safety of people, especially the children which have come to make this world better. But I sincerely think that silver halide photography is dead for the masses, digital photography has put it in a comatose state. and rightly so, no one can detain the march of...

thank you Daniela

https://cafedesaul.com/index-english.htm I will fix the problem in a few minutes thank you

What I mentioned in the beginning of this thread was that around 1999 I found that silver chloride gelatin emulsion could be fixed with kitchen salt instead of the hypo fixer. But now, because it is relevant to this particular post I may not waste my energy if I also add that: 1) Not only...

YOU WRITE: If you read Talbot’s notebooks P and Q you will see that he also found that permanent fixation as opposed to stabilisation could occur with the correct ratio of AgNo3 dilution to salt concentration. The reason he didn’t bother to stay with that process is because it moved on to the...

You are right. Talbot salted plain paper, then bathed it in a silver nitrate bath to make it light sensitive. He exposed the paper to light and later immersed the silver chloride image in kitchen salt in an attempt to fix it, that is so light will no longer act on the residual light sensitive...

This book below was published 20 years ago. It is not a sum total of all my research and experience of gelatin silver halide chemistry because it has become too vast and diverse with many nobel inventions after 40 years research. It was not given to the public but only to my friends and was...

KORAKS YOU WRITE: It really sounds almost like magic, but being familiar with the carbon transfer process, your claims regarding permanency do not strike me as odd in particular. I'd love to hear more about how this process actually works. Is this something you intend to publish at a later...

PENTAX USER YOU ASK: If the picture on the paper dissolves in water then how long does a drop of water spilled accidentally onto the paper take to act? In other words how long do you have to wipe off the drop of water before it affects the print's permanency? I ANSWER: The picture areas of the...

I started a career in photography in 1975. My research in PHOTOCHEMISTRY more than 40 years ago. During those years I worked out many new ways and processes using coffee liquid and dry forms. In 1992 two of these methods were documented live and seen by more than 100 million people in latin...