Nova slot processor question

[weasel]

I think I have an idea how to make a slot processor, similar to a Nova. Never having seen a nova up close and personal, I have a couple questions for those who have.
How wide are the slots?
The vertical surfaces on the inside of the slots must have some sort of texture, ridges, or the like to keep the paper from sticking to the sides. What does it look like?
How much larger than the paper size intended is the slot?
The clips that hold the paper- how do they grip the paper?

 

[Ian Grant]

You really should look at a Nova first hand, also they are often quite inexpensive second hand.

The slots are just an inch or so wider than the max size, the internal surfaces are patterned with sort of pyramid style ridges. The clips use pins to pinch the paper.

The temperature control system is superb which makes them such an easy and accurate system for colour printing.

Ian

 

[jeroldharter]

The slots are relatively narrow, maybe 2/3 of an inch. I think that you don't want the slot too wide because it would use too much solution, weigh too much, and the suspended print would wallow around and perhaps bend during agitation.

The surface of the inner chamber is dimpled, kind of like the opposite of a golf ball. I have seen some similar patterns on things like shower glass and cabinet door glass.

The clips are plastic, the ends of which slightly splay apart (like a duck's bill) when squeezed and the paper is jammed in. This slightly mares the edge so it is not good for borderless prints. Also, for prints larger than 11x14, two clips are required.

If you make one, it would be good if it drained easily. Slightly canting the bottom toward a spigot drain would be good. Also, it can't be moved when full. A small aquarium heater and pump might suffice for the water slots.

 

[eric]

The vertical surfaces on the inside of the slots must have some sort of texture, ridges, or the like to keep the paper from sticking to the sides. What does it look like?

Like a wasp nests design.

How much larger than the paper size intended is the slot?

The bigger the better! I have a 16x20 size and I usually only do 8x10 or 11x14's on it. I can do batches easier with a big Nova.

The clips that hold the paper- how do they grip the paper?

Vampire clips. It pokes 2 small holes on the edge of the paper. I usually print smaller than paper size. The Nova clips keeps the paper from sinking as it stops right at the top of the Nova.

Good luck with the project! It'll be interesting. I've seen lots of people trying to come up and McGuyver these things and wind up buying used. I think its fairly hard to make. Make sure you make a drain of some type.

Oh, also, my 16x20 has liquid holding tanks in-between the slots to keep the liquids tempered.