Dust on paper negatives

[tonyowen]

I'm getting a lot of dust marks on my paper negatives [black spots when scanned image is inverted]
Not certain where they are coming from or, more importantly how to prevent/minimise them.
8x10 Ilford Multigrade paper cut with rotary cutter in darkened bedroom [with red/orange safelight] and loaded into 4x5 dark slides.
Paper exposed in camera, then [often after some days/weeks] transferred in same darkened bedroom to Jobo 2500 tank with 2509 sheet film reel.
Rotary development using Ilford PQ Universal for 1 1/2 min then scanned and loaded in ps for processing.
Any and all advise welcome.
regards
Tony

 

[Svenedin]

So there were white spots on your paper negative? Suggests the dust was there at exposure time. You could blow off the paper after cutting with some canned air. Might help.

 

[tonyowen]

So there were white spots on your paper negative? Suggests the dust was there at exposure time. You could blow off the paper after cutting with some canned air. Might help.

Yes, I wondered about that or some form of anti-static wipe??

regards
Tony

 

[REAndy]

Did you say you expose, and then develop "days or weeks later"? I know that's ok with film, but I wonder how long a latent image lasts on paper. Can anyone give advise on this?

 

[RalphLambrecht]

I'm getting a lot of dust marks on my paper negatives [black spots when scanned image is inverted]
Not certain where they are coming from or, more importantly how to prevent/minimise them.
8x10 Ilford Multigrade paper cut with rotary cutter in darkened bedroom [with red/orange safelight] and loaded into 4x5 dark slides.
Paper exposed in camera, then [often after some days/weeks] transferred in same darkened bedroom to Jobo 2500 tank with 2509 sheet film reel.
Rotary development using Ilford PQ Universal for 1 1/2 min then scanned and loaded in ps for processing.
Any and all advise welcome.
regards
Tony

electrostatic picking up dust somewhere in the process? I'd blame it on the negative holders or the Job tanks and give them a good vacuum cleaning.

 

[NedL]

Did you say you expose, and then develop "days or weeks later"? I know that's ok with film, but I wonder how long a latent image lasts on paper. Can anyone give advise on this?

I know there was someone in another thread in the past year or so who said that the paper negative latent image fades, but my experience is that there is virtually no degradation even after several months. Perhaps it depends on the type of paper and storage conditions, but I've never seen a problem. Several times I've gone off on a vacation or made a bunch of paper negatives and then developed them 2, 3, or 4 months later.

As for OP, I know that I have a bad time with dust in my scanner... on the scanner glass or getting onto the surface of the paper negative before I scan it. Blowing it off or using a microfiber cloth helps a lot... but the dust isn't on the negatives when I start.

 

[tonyowen]

IAs for OP, I know that I have a bad time with dust in my scanner... on the scanner glass or getting onto the surface of the paper negative before I scan it. Blowing it off or using a microfiber cloth helps a lot... but the dust isn't on the negatives when I start.

I had not thought of that aspect - thank you
regards
Tony