Just got Tim Rudman's old book, and it's clear that the dark band in the middle of the print is from edge development effects from using too small a tray..probably also paper curl contributes.
Kal, when lith printing, you want to agitate continuously. Use a tray that's at least one size larger than the print. I use 12x16" trays for 8x10 and 11x14 prints.
During the first minute or so, until the paper flattens out, you may want to even agitate fairly vigorously. The benefit of using a large tray is that you can turn the print around, and slosh the chemistry in a perpendicular fashion, or it may float around randomly. Continuous agitation is important, though.
Thanks Thomas. I was agitating once a minute, bnut I now understand the need for the bigger tray. I have them, si I will use them next time.
I also experienced quite dramatic "Fix-up" lightening of the print when using Ilfostop and Ilford Rapid Fixer (it was diluted to 1+9). I see from Tim's book, I should be fixing for as short a time as possible, so I assume I should use 1+4? Anyway, the colour change/lightening was instant.
Thanks for the info Thomas. Very exciting experience! Rgds, K
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