X-cuse my english but i have a question.I wander what`s happend if i bleach a print in kodak sepia toner only in bleach (part A).Shall i fixit after and evrethig is OK ?What`s happend with the print in time? Shall i do samthing else ? Meny thanks if you healp me.By.

-- stelian ivan (stel_ivan@swipnet.se), October 06, 2000

Answers

Hi - hopefully you will get a more complete answer from somebody else.

I have done what you ask about, fixed and washed the print, and the print acts like a regular print after that.

chris

-- Christian Harkness (chris.harkness@eudoramail.com), October 06, 2000.

It would help if we knew what you were trying to accomplish by using this technique.

-- jim megargee (jmegargee@nyc.rr.com), October 06, 2000.

The bleach included with sepia toner is a cutting bleach, intended to reduce the entire print. You should refix after doing this (if you do not redevelop), as the bleach converts silver back into silver- halide. Generally, you would only do this to a very over-exposed print.

-- Ed Buffaloe (edbuffaloe@unblinkingeye.com), October 07, 2000.

Just to amplify the detail above, the cutting bleach, presumably a ferricyanide based bleach, would, depending upon the formulation and concentration and density range of the print, be more likely to create a combination of silver ferrocyanide and silver halide from the silver areas of the print, most likely bromide. This is a complex area of rate reaction kinetics.

Fixing after bleaching will remove the bleached part of the image, but may leave a pale yellow stain in the deeper blacks.

Without fixation, as Ed observes, the silver salts can be re- developed.

A consequence of the formation of traces of silver ferrocyanide is that by placing the print in a neutral or slightly acidified solution of ferric chloride a pale blue, or greenish tone may develop, which is the Prussian blue of conventional blue toning.

Dallas Simpson

-- Dallas Simpson (dallassimpson@waterpump.f9.co.uk), November 22, 2000.