[comp.sys.amiga.hardware] Okimate 20 Printer head problems.

sutherla@qtp.ufl.edu (scott sutherland) (02/01/90)

	I recently purchased a used Okimate 20 printer and am
very pleased with the output with a couple of exceptions.  The
colors are excellent, but the gaps between scan lines are
a bit annoying.  I printed one of the sample DBWRender files
I got from ftp of several glass spheres in a brick room.  The 
mortar lines in the brick were not quite horizontal and so the
combination of this with horizontal white gaps in the output
made for a bizarre effect.  

	QUESTION ONE:   IS THERE A WAY TO MINIMIZE THIS GAP
			PROBLEM??  I AM USING A MEMOREX 
			THERMAL TRANSFER PAPER WITH SPROCKET
			HOLES.

	Now to my main problem.  I printed another DBWRender image
of balloons over rippled water.  I got the now-all-to-familiar
gaps between scan lines, but in the region of the picture which
is supposed to be a constant color (part of the sky), I noticed
that, for each individual scan line of color (~1 cm thick) that
there was a gradation of intensity from top to botton.  Thus,
the top of the strip was much darker than the bottom, even though
the color was the same.  This has the unfortunate result of 
EMPHASIZING the gaps already present in the image since the 
bottom of one strip is much lighter than the top of the next
strip below it.  So, even if I could get rid of the gaps, 
I would be able to see the borders between strips. 

QUESTION(S) TWO:	COULD THIS BE A PROBLEM WITH A DIRTY
			PRINTER HEAD?  CAN ANYONE SUGGEST A WAY
			TO CONFIRM THIS?  IF IT IS THE PRINTER
			HEAD, HOW DO I CLEAN/FIX IT?  

Any comments would be appreciated.  I hope that this is an appropriate
subject for comp.sys.amiga.hardware.  If not, please let me know.

Thanks,

Scott Sutherland
sutherla@qtp.ufl.edu