Canon Pixma 620 Loss Again Of Magenta Weak Cyan

[stratman]

Barfl2:

Do you not see the horizontal banding of lighter color intensity on the bottom portion of the image you uploaded? There are also color deficits in a pattern of singular row of dashes horizontally across the page. If these are not apparent on the original printed image but only on the scanned image you uploaded to the forum then we are seeing scanning artifact. Otherwise, your printer is not performing properly.

It is a standard picture from Windows library of a high quality.

What does this mean - the image is of "high quality" or you printed the image with "high" print quality setting on the printer?

 

[PeterBJ]

The image is one of the sample images from Windows 7. It is named Chrysanthemum and the original image is a .jpg file of 900 kB size. Here is the original image, click to enlarge:



Note the orange colours are much more red than in the printed and scanned image, which shows some almost yellow leaves. This could mean that there still is a problem with magenta, especially the two lighter magentas. But an ordinary home use scanner is not quite true to colours, so I'm not sure, but I still think there is a problem with the lighter magentas.

 

[stratman]

The color shift may be off due to digitization. It also could be due to different ink sets and/or paper. The color fidelity of the print engine may also have something to do with it.

My concern is with banding and deficits in OP's scanned image that appear more widespread, though to a lesser degree than seen on the bottom of the scanned image, since viewing this "original". Colors can be corrected to a great degree with profiling. My other concern is OP's ability to observe sufficiently and report succinctly to avoid spinning wheels.

 

[barfl2]

I will try and answer as best I can The Hat yes I agree heavy grain when magnified so it would not stand being enlarged very much, I assume the original was a larger file before being converted to a JPEG and have a very much smoother gradation.

PeterBj Yes the original appears redder but bear in mind that this was my first attempt to test the magenta nozzles and I am not using original inks or paper and that I only tried the one print. I have not tried any other settings in the print engine which may well give a more truthful rendition.

stratman my eyesight must be off because I cannot see the defects mentioned just had an cataract operation and not yet had a new eye test. This paper is HP with an extra piece for feeding on some printers such as my 7760 and is cut off when completed which I have not done yet. This line may be what you may seeing. I did select high quality for the print.

I have found a copy of the same image which I printed in December 2011 and it appears virtually the same with the same heavy gradation (The Hats upload). I do not know how accurate colours transmit? certainly web pages often print completely different to the viewed image

 

[stratman]

Protect your eyes, barfl2!

This would be easier if you print solid colors instead of complicated images that can help hide defects.

The bottom line is if you are satisfied with your printer's output then no need to continue. If you are not satisfied then we can continue this at a later date when your vision is back to par. Just print something that uses all the colors, such as a nozzle print, at least once a week.