Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, Lez <lez.briddon@...> wrote:
>
> When is paper paper, not when its kodak paper........
> 
> I just found an older pack, it works a treat!

Kodak has changed their paper formulation multiple times in the past 
five years. If you have an 'older' version, the newer ones will 
probably not work the same. Kodak paper is generally not very useful 
for inkjets either ;) The stack of older Kodak I have won't work with 
either my new HP or Epson, the ink just puddles on it and gets all 
gooey.


> I did the usual clean board, wipe with a dilute etchant to take the
> shine off and leave salmon pink (I'm on ferric from maplins uk) then
> iron on for about 3 mins etc, drop into cold water.
> 
> 
> When you come to take it out the water it peels off with a loud
> creaking noise as the toner splits from the glossy backing.
> 
> This leaves a toner only coating on the board as opposed to toner 
> and gloss.
> 
> This paper is ''kodak inkjet photo paper' 190gm2 cat 178 3547,
> kp105417, 38302 41, 04fkc7 17,  I dont know which number is specific
> to it but its a 50 sheet pack
> 
> The one that makes really proud toner and gloss fibre tracks is
> 'kod-aper glossy inkjet paper' 180gm2 thickness 0.21mm but has no 
> cat
> number or barcode or anything and is 25 sheets in a (shrink)wrap
> 
> In fact I think its a fake paper, made to look like kodak etc, looks
> like I may have been duped I thought I was buying kodak!
> 

It might, it might not be. If you got it in a small computer store, 
etc, they could simply have bought a 500 page ream and split it up for 
resale. Depending on how old it is, however, don't expect any new 
Kodak you bought to work. I think they just came out with /another/ 
new formulation for the stuff this year.

One thing that I haven't seen mentioned often is that even if you can 
run inkjet paper through your laser printer without having it melt or 
jam inside of it, it is quite likely that there is 'dust' from the 
coating, whether clay or otherwise (there are two kinds of inkjet 
photo paper, polymer-swellable and microporous), coming off of the 
paper that will eventually wreck your printer. This is precisely why 
print shops will refuse to run paper you bring in through their 
printers. When I use the HP laser glossy photo paper at Staples, they 
often check to make sure it's not inkjet paper because it can ruin 
their machines. I just think people should be aware you are taking 
this risk when you use the inkjet paper in a laser printer, at the 
very least, the drum might need to be replaced more often.