PC Ink Intensity -15

[apetitphoto]

A nozzle check bypasses any ICM profile. Shouldn't the fact that it prints darker say something?

It doesn't say what you want it to. It simply says that ink flows through the print head. Your assumption is equivalent to stating that because there is data in a file it does not have a virus.

 

[PalaDolphin]

If the PC ink is assumed to perform identical to the original ink you only could prove/see that by printing both inks with the same profile, not another one. Your test may rather indicate that the profiles are different and not the inks.

Yes, that's my next test. I've been busy with life things since my original tests. I'll get around to printing using the Canon ICM profile w/PC ink.

 

[stratman]

A nozzle check bypasses any ICM profile. Shouldn't the fact that it prints darker say something?

Yes, the possibility of either cross-contamination or incorrect ink used in one or more cartridges are more likely culprits. You also needed to have used the same paper for both nozzle checks and let the ink dry thoroughly, maybe even overnight. All of this requires that Precision Colors ink is a close match to OEM Canon ink to begin with. Otherwise, you are chasing your tail over apples and oranges. (how;s that for a mixed metaphor?)

The nozzle check image you posted is not very useful for diagnosis. A scanned image is preferable. So, you will need to be the one to make the determination of color fidelity.

i think you need to begin to investigate the suggestions you have received, starting with most likely causes. If you are methodical and do not introduce more than one variable or so at a time then you will be able to figure out the issue. Of course, if you are satisfied with your setting change fix then there is little reason to continue the disussion.

 

[Roy Sletcher]

I am in agreement with the previously expressed opinion that this thread has outlived its usefulness, but wish make to make one last suggestion for the OP.

Before starting your evaluation watch the following short video, It is jam packed with relent and generally useful information:

Hi Res
http://digitaldog.net/files/Why_are_my_prints_too_dark.mp4
http://digitaldog.net/files/Why_are_my_prints_too_dark.mp4
Or Lo res
https://youtu.be/iS6sjZmxjY4
https://youtu.be/iS6sjZmxjY4
The author is Andrew Rodney AKA "Digital Dog", one of the foremost INDEPENDENT experts on this subject in North America with impeccable credentials and references. He is active on many forums discussing this subject, and a visit to his website can be instructive, but not for the faint of heart.

In this 24 minute video he covers:

(It also includes video update to a written piece on subject from 2013(

Why are my prints too dark?

Are your prints really too dark?

Display calibration and WYSIWYG

Proper print viewing conditions

Trouble shooting to get a match

Avoiding kludges that don't solve the problem

enjoy!


rs

 

[stratman]

Good video, @Roy Sletcher !

 

[Tin Ho]

Really, dude? Bad form.

He called it nonsense too. Not funny. It is likely an issue of color management. It should be a simple matter for Mike to help.

 

[Roy Sletcher]

He called it nonsense too. Not funny.

A lot can be said in favour of simple "plainspeak" and nonsnse is a plain description.

This subject is somewhat complex and difficult to discuss objectively. Putzing around with political correctness and similar absurdities only makes it more obscure.

It it walks like a duck and quacks like a duck - it could be - just a duck.

my 2 cents - written for clarity (*plainspeak), not for agreement or approval.

Feel free to disagree or rebut.

rs

 

[apetitphoto]

A lot can be said in favour of simple "plainspeak" and nonsnse is a plain description.

This subject is somewhat complex and difficult to discuss objectively. Putzing around with political correctness and similar absurdities only makes it more obscure.

It it walks like a duck and quacks like a duck - it could be - just a duck.

my 2 cents - written for clarity (*plainspeak), not for agreement or approval.

Feel free to disagree or rebut.

rs

I know a story about a duck. It costs more than 2 cents and doesn't end well for the duck...

 

[jtoolman]

By the OP having to reduce Intensity I hope he is saying that his PRO-100 with PC inks and ICM is laying down TOO MUCH ink and not that the PRINTS are TOO Dark which would lead to Brightness adjustments and not Ink Intensity adjustments!
That is what the Intensity adjustment is used for when you use Manual Adjustment! It reduces how much Ink Intensity is laid on paper.
Just to clarify that I HOPE we are not discussing Brightness here.
Just Ink Density.

Joe

 

[stratman]

Just to clarify that I HOPE we are not discussing Brightness here.
Just Ink Density.

OP seems to be referring to both Brightness and Intensity and he is apparently correct.

Canon discusses Intensity setting, for instance at http://ugp01.c-ij.com/ij/webmanual/PrinterDriver/W/MX920 series/1.0/EN/PPG/Dg-c_intensity.html

You can dilute (brighten) or intensify (darken) the colors of the overall image data during printing.
The following sample shows the case when the intensity is increased so that all colors become more intense when the image data is printed.

Canon also states the following for the Brightness setting:

This function does not change pure white or pure black but it changes the brightness of the intermediate colors.

I do not know if the same applies to changing the Intensity setting.

Additionally, OP stated:

I can get the exact same effect setting Intensity to -15 as setting Brightness to +30.

Canon appears to corroborate OP's conclusions.