[bigbigart]

I have a Photosharp 2536-1 with Olec Intergrator that has given me many years of good service. Suddenly the exposure times need to be drastically lengthened.

I have not changed anything as far as emulations or screen prep.

Screens that used to be exposed properly at 106 seconds now take 947 seconds.

Any ideas?

 

[BnC Custom Ink]

I'm not familiar with that unit specifically, but if it is "years" old, l would look into replacing the bulb, whatever type it is.

Sent from my HTC One using T-Shirt Forums

 

[ChristFollower]

Wow, that's pretty drastic. Even though you mentioned it has an integrator, I agree with Brad - I'd start with a new bulb, on the chance that the integrator is measuring enough of a UV spectrum that your emulsion is insensitive to, to generate a "false" reading so to speak.

Has anything changed with relation to the humidity level where the screens are stored? Dampness can dramatically lengthen exposure times - although I'm not sure it could make that big a difference.

 

[bigbigart]

Thank you for the replies. I was suspicious of the bulb due to its age. I have been using this machine for ten years without problem through seasonal humidity changes without any noticeable differences. I'll order a bulb today.