The Toner Thread

Discussion in 'B&W: Film, Paper, Chemistry' started by Stephen Frizza, Jul 17, 2010.

  1. NedL

    NedL Subscriber

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    I have a question. I know that sulfide and thiourea toners will tone silver bromide, regardless of whether it's exposed. What other toners behave that way? Selenium: if it was KRST, the amm. thiosulfate would dissolve undeveloped AgBr, so not this one, right ? Iron blue toner ( AFC + pot ferri + weak acid )? Copper toner ( copper sulfate + pot ferri + K-citrate or maybe Na-citrate )? Any others?

    Are there other fogging agents that aren't used as toners?
     
  2. Louis Nargi

    Louis Nargi Subscriber

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    interesting thread
     
  3. esearing

    esearing Member

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    Experimenting with the PF Nelson Gold Toner Kit. Kit is a bit cumbersome to mix and toning solution is used at 100-110 degrees (if possible). The toner is slow working so you can pull at any stage from barely noticeable change in highlights around 10minutes to full brown toning. Full toning is achieved in about 20 minutes and has about the same brown tone as Thiourea when using the brown tone mixtures with more activator. There is some loss of density so a slightly darker print should be used.

    Example: Overprinted image on Ilford MGFB Warmtone, developed in LPD 1:2, Gold toned for 12mins at 110 degrees falling to mid 90s + 3 minutes selenium 1:20 . The light brown tones dried down darker than I expected so 10Minutes may have been adequate.
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