Odd developing pattern

[RoboRepublic]

Hi folks,
Was curious if anyone may have experienced a similar issue with odd circular shapes on their 4x5 sheets after development?
I used a 20th century reel, which I've used for over a 100 sheets with out any issues such as this. I believe I shot this through my Horseman 45FA along with a fidelity elite holder.

4/6 sheets exhibited this issue in the developing run. I used a jobo silverbase for development along with Xtol at 96F.

Thanks!

 

[Kevin Allan]

Could it be insufficient developer to cover the whole sheet ?

 

[RoboRepublic]

Hi Kevin, its developed in the Jobo Silverbase, which is a rotary process on its side, and the symmetrical pattern seems not to implicate a lack of chems. I suspect that low chemistry in rotary would mean uneven development along the longer edges, though I've never experienced that so far (fingers crossed)

 

[Ian Grant]

Looks like the sheet was bowed and touching either the edge of the tank or the sheet in front, so undeveloped on the edges.

Ian

 

[David M]

Yes, it looks as though the face of this sheet was touching the back of the next one. Either a rare mistake in loading or an equally rare surge in the developer, I would guess. It does happen to everyone, sooner or later. Wet film does stick together very firmly.

 

[RoboRepublic]

Thanks everyone! I will do an examination of my tank to see how I managed to get these marks.