🚀 go-pugleaf

blacka@logica.co.uk wrote:

>- Owen is concerned about the ribbon becoming dirty 
>  because of overprinting.  I would guess this is only a 
>  problem with Y-interlace - for X interlace the driver
>  does the two yellow passes, etc ending with black.  Am
>  I correct here.

You are correct.

>  In the 
>  table of control codes (p58 if anyone has a copy) it 
>  gives the impression that you can print every dot, whereas
>  the spec on page 106 claims "Adjacacent dots not printable
>  in these modes".   I suspect the latter is the case - 
>  does anyone have any hard evidence.

Page 106 will be correct - I have experience in deciphering printer manuals.
Most 24 pin printer manuals say 360 DPI horizontal in their control code
tables and then later add a footnote about not being able to print adjacent
dots. If a manual says nothing at all on the point, assume nothing. It may
or may not be able to print adjacent dots. In this situation the only
options are to ring the printer manufacturer and ask, or print something out
assuming the printer can print adjacent dots and look at the output with a
strong magnifying glass or microscope.

>Final point - I have noticed that the quality of Outline
>Font printout is better under RISCOS3.1 than 2.  Previously
>I found 180x180 was poor, 360x360 was needed.  Now I  find
>that 180x180 is acceptable, and 360x180 when I need high
>quality.  Could Owen shed any light on what has  be done
>to obtain this  improvent 

I'm not sure what's giving this improvement, sorry.

Owen.