Digital BW, The Print

CDTobie@... wrote:
> In a message dated 2/5/08 2:57:33 PM, E.Dinkla@... writes:
> 
> 
>> So that's
>> different to the Z3100 that has 4 K inks aboard
>>
> 
> Please don't fall into the HP marketing parlance of how many "K" inks they 
> have: it makes a great deal of difference in producing subtle, neutral grays 
> whether a printer has one gray and two blacks, or two grays and one black. 
> Similarly, two blacks (only one of which get used on some media) and two grays are 
> not equal to having three levels of gray, though thats less of an issue.

The media preset Fine Art > 250 grams in the B&W mode 
delivers simply a slightly higher Dmax on Photorag than the 
Matte Litho Realistic media preset, the first uses MK + PK + 
middle gray + light gray the last MK + middle gray and light 
gray. The gloss is and can only be done with PK + middle 
gray and light gray + as a choice gloss enhancer which 
deepens the PK.
I had my reservations whether that matte HP quad would 
deliver as I made a similar setup in the past on an Epson 
9000 and didn't see much gained by it other than filling in 
the MK head's flaws with the PK. But in HP's case it does. 
Of course it intrigued me why but on the other hand who 
cares as it delivers. Later I observed that the PK has a 
much lower density on some matte papers so it could well fit 
into the partitioning. HP added another quad media preset in 
their last firmware-driver upgrade that I didn't test. I do 
not think they advertised that one very loud, they just 
believe in its function. It is clear that HP didn't walk the 
worn path in R&D before the Photokina 2006 but in some 
aspects they still are ahead.

-- 
Met vriendelijke groeten, Ernst


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