Baking Solution

[pacificiam]

The pre-bake solution's job is to project the non-image (i.e. bare aluminum substrate) areas of the plate during baking, so that they don't oxidize and lose their hydrophilicity (ability to attract water/fount on press). The hotter the baking temperature the bigger a problem this can be.

Kevin.[/QUOTE]

And hw high baking temperature create problem for plate

[pacificiam]

hw high heat create problem to plate??

[Kevin@Kodak]

The pre-bake solution's job is to project the non-image (i.e. bare aluminum substrate) areas of the plate during baking, so that they don't oxidize and lose their hydrophilicity (ability to attract water/fount on press). The hotter the baking temperature the bigger a problem this can be.

Kevin.

And hw high baking temperature create problem for plate[/QUOTE]

Kind of - if the plate is protected with pre-baking solution, then it shouldn't be a problem at any (typical) baking temperature. The only time we'd ever recommend NOT using a pre-bake solution is if you're using the Kodak QuickBake oven that bakes at a temperature much lower than normal plates require (by supplementing with UV light, for plates that cross-link in that manner).

Kevin.

[pacificiam]

1)Baking solution protect non image area from oxidation.
Oxidation happen we non image area expose to atmosphere.
So we can say that it work same as gum/finisher

[Kevin@Kodak]

So we can say that it work same as gum/finisher

No. Gum/Finisher also plays a key role in the quick roll-up of plates on press. Prebake solution isn't designed to do that, but it is designed to survive the high heat in the baking process. There are printers that don't re-wash and re-gum the plate after baking (i.e. leave the prebake solution on), but they're likely suffering from poor startup and increased make-ready compared to what they could get.

Regular gum/finisher would not survive the baking process, and if baked would lead to either an unprintable plate on press, or at least very poor startup.

Kevin.

[pacificiam]

Gum/finisher also protect plate from oxidation. Baking solution also do same thing.

then what is difference between them??

[Kevin@Kodak]

Gum/finisher also protect plate from oxidation. Baking solution also do same thing.

then what is difference between them??

Good question... I'm not sure what the chemical difference is between them, nor why it's not possible (yet?) to have one gum that can do it all. The high heat of a normal baking oven seems to be just too much for a regular finisher to handle.

It's a good question for our R&D scientists - I'll see what they say.

Kevin.

[pacificiam]

Thanx

If u got answer abt it then please reply.
I just want to knw wat is basic difference between them?
What is there function?

If i got den ill too reply
i lyk to share knowledge