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HP Latex 310 Spectrophotometer

Offline PrintGuy87 Posted 06-16-2015 - 02:41 PM
Post: #1
Member
4 Posts
Member

Onyx Version:
11
Printer(s):
HP L310

Hi, I'm a new Onyx user and first time posting on the forum. Our shop recently purchased a new L310 from HP. It seems to be a great printer, but we were disappointed when we found out it does not have an internal spectrophotometer as did our old L25500, but rather a "line sensor". From what I've been able to tell, this precludes much of the calibration in Onyx, including building Icc profiles. I would just like to know what everyone's thoughts are about how how limiting this really is, and whether it would be necessary to buy an external spectrophotometer like an I1. Any thoughts?
(This post was last modified: 08-25-2015 06:10 AM by PrintGuy87.)
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Offline PrintGuy87 Posted 06-23-2015 - 07:51 AM
Post: #2
Member
4 Posts
Member

Onyx Version:
11
Printer(s):
HP L310

I should add that the profiles from the internal calibration do look pretty good for most of what we do, but there are some areas where I really think it could be better, especially bright reds and oranges.
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Offline Mikulas Posted 07-06-2015 - 02:37 PM
Post: #3
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55 Posts
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Onyx Version:
10.2
Printer(s):
L26500, W8400+Onyx / Mimaki JV4, JV5 +TexPrint

Hi PrintGuy.

Don´t know the L310, but your "line sensor" is probably some densitometer, or? If used properly you can get very good results with Onyx profiles. But you need some experimenting, and find the best suitable media profile for your media.

Idea behind is - biggest differences in color are caused by different channel non-linearities (alias dot gain) for every media.
Second biggest differences are in the media ink-limits. Both can be solved only by densitometric linearisation.
Color itself on similar media stays "quite" similar.
If you calibrate (linearise) properly + your media is able to handle same ink limits as set in the downloaded media profile + use ICC profile from well chosen media profile type ... then you can get very nice colors. Cool

Practically:
a/ take some downloaded media profile (similar type to what you are printing on)
b/ duplicate it and rename
c/ re-linearise with the same settings (2-3 readings recommended)
d/ do some test-printing
e/ if not 100% happy with full colors, do some fine ink limit tweaking
f/ if not 100% happy with grey balance, do some very fine N-factor tweaking
g/ if not happy even then - go and grab another media profile
(This post was last modified: 07-06-2015 02:42 PM by Mikulas.)
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Offline PrintGuy87 Posted 08-25-2015 - 06:27 AM
Post: #4
Member
4 Posts
Member

Onyx Version:
11
Printer(s):
HP L310

Thanks so much for your help.
Do you think it will possible to get good color consistency between different medias without having a custom Icc for each one? Also, setting ink limits from Onyx seems to be grayed out unless you have a measurement device attached. I'm stuck with just one ink limit parameter I can adjust from 70% to 120% from the printer. Where do I find the N factor setting?

Thanks again for your help!
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Offline Mikulas Posted 09-21-2015 - 10:35 AM
Post: #5
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55 Posts
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Onyx Version:
10.2
Printer(s):
L26500, W8400+Onyx / Mimaki JV4, JV5 +TexPrint

1/ Color consistency - this is what we are talking about Smiley - good colors means good consistency. you can get quite good consistency on similar media types. But if you talk about significantly different media then you will probably have problems with neutral grey and with near black shadows.

2/ From my experience - to make a very good custom profile is MUCH MORE difficult than to use a good factory profile a tweek it.
That is what so called Contone from Canon do - calibration, but no profiling. And if you look deeper at Onyx profiles you would quickly find out they same - they also use older ICC´s in new printer profiles (as long as the new printers use the same inks)

3/ Ink Limit in Onyx - there are some older profiles out there, which work with the new Onyx versions. But if you try to edit them they do very strange things. Sad Maybe this is the case.
And... I´m not familiar with Onyx versions - maybe there are some limitations according to what version of Onyx you have.

4/ N-factor is the more scientific approach to Dot Gain - the whole Target Density curve is set by N-factor. You can find it exactly where the linearisation tools are... (I´m a bit surprised that you haven´t found it yet !)

Sorry for the late answer.
(This post was last modified: 09-21-2015 03:56 PM by Mikulas.)
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Offline PrintGuy87 Posted 10-08-2015 - 12:44 PM
Post: #6
Member
4 Posts
Member

Onyx Version:
11
Printer(s):
HP L310

Thanks for the reply. This gives me some assurance that all is not lostSmiley As for the grayed out ink limit problem, the fix was simple. I didn't realize you have to select advanced custom as your editing mode. Now that I've got that figured out I'll go have some fun profiling! Thanks again.
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Offline Hotspur Posted 11-20-2015 - 10:46 AM
Post: #7
Frequent Flyer
173 Posts
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Onyx Version:
To Infinity & Beyond
Printer(s):
HPZ Latex UV Mutoh Canon Summa

Hi

Just for clarity most of this info applies to many printers...but not the 310.

There is only a contone route into this printer - all you can do is build an icc in Onyx on top of whatever ink restrictions / ink limits / linearisations have already been done on the printer.

Whilst Onyx allows you to access some of these all you are doing is placing them on top of the same thing that has already been done on the printer - there's no benefit to doing this twice as long as they are done properly on the printer.

Just choose an ink limit and run the calibration on the printer - then go over to Onyx and build an icc profile - there's nothing else to do.
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