Search results

Johannes, You are entirely correct in your initial asessment. What happens is that the RIP will take certain objects in a vector file -- such as images or type with a drop shadow around them -- and render them first into bitmaps before proceeding to RIP the entire file. So now that they are...

Aaron, Before responding, just to make sure I'm following you: You've got several machines of the same model and type, and you then do media profiling up to but not including the ICC stage, using G7 as your calibration on each machine, then go back and do one icc from one of the machines, and...

Okay, so I've been extremely busy and just now had tome to sit down and respond, but a response was needed. Now I have to admit, I got a chuckle out of this. Fact is the foundations of my knowledge about color were laid by a pressman named Lewis LeMaster back when I was naught but a callow...

Okay, I'll get out my soapbox here and say I completely disagree. The real issue is how to make an ICC profile in the best way possible. And it is not so easily done, and from my perspective, all the people who are looking for a foolproof, easy "scientific" way to do it miss the point. RIPs...

Well... Not in digital printing. Not being totally up-to-date on the process in litho, I can see the process you're describing, but... linear means linear. In digital printing, there are no plates, so you send linear data to the printer, then it prints whatever dot gain it prints, you read the...

Just a couple added thoughts... Well, yes and no. In actuality, it works out along the lines that linearization is always calibration, but calibration is not always linearization. So for that reason after years of correcting people I've become a little more sanguine about not picking too much...

The problem with G7 is that it was designed to address a specific purpose. That purpose was that prior to computer-to-plate, while it was possible in litho printing to determine individual primary color values; individual primary color densities; media white point and total-of-all-primaries ink...

Andy, "Relinearization" is one of the biggest myths in large format printing. Fact is even if you took a second set of readings from the first patch sets you used to make your original linearizations, they wouldn't be exactly the same as the first readings. There will always be some difference...

No. You cannot import profiles from one RIP into another. 'Profiles' consist of two component parts. The first part is all the 'machine-state' information which your are specifically profiling, and the second part is the ICC profile, which is a characterization of the machine in that state. All...

The reason you should always coat aqueous-printed canvas is that all aqueous media receive ink into a "receptor coat" that is bonded to the surface of the media. The receptor coat has to be there in order to 'receive' the aqueous ink. The inclusion of the receptor coat is also why aqueous media...

Just a little wry observation there. Don't mind me. Mike

Alois, Well, first off, no. I'm not talking about "color correction" per se, or color correction for any ink hue errors. One key principle of color management is that there aren't any specific defined values for any primary colors, including CMY and K. ISO standards notwithstanding, the fact...

*Dryly* Thanks. It'll probably get here along with the check from Adobe. Seriously, the way it's supposed to work is that you decide from all my keen insights to hire me; and I'll wager if you had, you'd have actually spent less money in the end if you had than by following the breadcrumb...

I don't know. It's merely an observation. Mike

Gordo, So am I. Or at least this US citizen in particular. As I said, I've had more than my share of health issues. I unfortunately know several doctors on a first-name basis; and while, yes, a combination of forces has made healthcare billing and pricing a bit of a nightmare these days, I'll...

In the US, the answer is the difference between health insurance and car insurance. Car insurance companies can compete across the US and across state lines; they compete on the basis of cost and on the basis of service. And they advertise constantly for customers. I myself use the car insurance...

Well then... All L values are tone values. Not all tone values are L values. L values are values corresponding to a specific color space (some variant of L*a*b*.) Tone values in a single pixel of an image do not do this. A 100% pixel in the magenta printer of an image does not correspond to...

Gordo, In large-format inkjet printing these days, some marketing genius somewhere -- I'm not sure who's to blame, all the manufacturers have adopted the term -- has decided to call multiple-dot-size printing capability as "greyscale." I rail against this, since it co-opts a term that already...

Erik, Sorry, but it sounds to me like you're a fine engineer, but that your knowledge of image reproduction may be a little spotty. It is at least conceivable to combine image creation spaces and image working spaces into one "vision space" such as XYZ or L*a*b*. It is not possible to extend...

Gordo, Well the way I'd describe it: Individual CMYK channels have no L*a*b* information in them at all. Because they're not L*a*b*; they're CMYK. If you have a CMYK image that is, let's say, a solid color that is C=40 M=30 Y=20 K=10, then the individual pixels in each channel would be 40...