Hans Wedemeyer wrote:
> Mike,
> That's the reason I posted this today.... I'm also sick of the same old
> crap about lasjer jet not being any good... it really is
> misinformation...
Show me a footprint of 0.5mm pitch 256 pin QFP done on a laser without
most of the pads shorting and i'll be happy.
> The other point that I can't abid is them needless search for absolute
> blackness in the film... Special this and special that... hog wash...
The blacker the film, the less critical the exposure.
> I use MSOP a lot of the time that's 0.0256" (0.65mm) and have no problem
> at all.
26mil is huge.
> With regards to 8 mil..... well I demonstrated today, 10 mil is run of
> the mil and 8 mil is just as easy.
Fine-pitch footprint?
> I remember a stupid board I was presented with some years ago, it was a
> very simple circuit about 10 components and the board was about 4" X 4"
> ( Deer feeder controller) and the person used 8 mil lines and the
> smallest pads ! When they tried to change components of course without a
> vacuum driven desoldering tool, pads lifted of and traces got broken.
> The golden rule is when you have the space USE IT....
Most of the time i use 20mil tracks and 60-80mil vias.
> I can do 5 mil if I use Apollo CG7060 film, 3M CG 3300 is only good to
> 10 mil (8 at a stretch, with some touch up afterwards)
>
> During the years I have trashed two Epson Inkjet (700 dpi) printers
> because the nozzles got blocked and I tried everything to devolve the
> hardened ink, but nothing worked. At the time Epson offered a head
> replacement for $130.... I went out and purchased a HP inkjet printer
> instead for less.
Using crap ink i guess. I've used refill stuff just for printing
on paper and sometimes it gets clogged after a few months. The best
way to get it working again is to put in a genuine cartridge and
it flushes the old crap real easy.
> If people are dumping Epson Inkjet printers for $5 I'd say good luck to
> anyone buying one, perhaps buy two and hope the parts are
> interchangeable... There are also good deals on eBay for HP Laser
> Jets...
I just got a lexmark 4039 R+ 1200dpi, extra paper tray, duplexer (double-
sided printing:), network card, 16ppm for AUS$200 off ebay.com.au.
Great for printing big manuals;)
> I've only put one new toner in this LaserJet since I purchased it two
> years ago, my other one (same type, yes I have 5 printers...) is about 6
> months older than that and it's on the third toner.
> I buy real HP toners for about $48.... I wonder what Epson's inkjet
> cartridges cost... !
Black costs AUS$25-35, but i make them last 6 months to a year by using
it only for PCBs. Laser is much cheaper for paper printing.