Epson Stylus 1500w - Missing details at 1440 ppi

Gubenco

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Thank you @The Hat for the printing test. I would like to see how it behaves at 100%. A 4,28 cm wide print, 2400ppi printed at 2400 dpi( if the printer can) or a 8.57 cm wide 1200ppi printed an 1200 dpi. I hope at least 1200dpi look good. I'd like to see if Canon has similar issues as Epson.

@maximilian59 Thank you. A really good book
 

The Hat

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. I would like to see how it behaves at 100%
Scan of your 1200.png, print done at same size 100% with resolution 1199 PPI…

This was the result....
Untitled-1.jpg

Then scaled to 337% and printed with resolution 355PPI…

This was the result....
Untitled-2.jpg click to enlarge...
 

Gubenco

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Thank you! What is the printer model?
 

stratman

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Then scaled to 337% and printed with resolution 355PPI…
What does this all mean? What is it you are demonstrating?

I understand but am asking for a friend. ;)
 

The Hat

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Ink stained Fingers

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I'm still completely lost why you would try to print with 1200 or 2400 dpi and rescale your image before print - Canon printers don't do 2400 dpi image pixel resolution, and Epson printers don't 720 or 1440dpi, or are you
testing software - different interpolation schemes and not hardware resolution ?

If you want to go beyond the simple resolution tests - e.g. with the Roger Clarke pattern - you can take a more serious approach and look for resolution measurement tools by Imatest . It does not matter much if you measure the resolution capabilities of a camera or a lens - or a printed pattern with the Siemens star.

https://www.imatest.com/docs/rescharts/

Image Engineering offers you something similar

https://www.image-engineering.de/products/charts/all/571-te253x

and there is a free software version available to support the Siemens star approach.

https://www.image-engineering.de/content/products/software/analyzer/downloads/iQ-Analyzer_manual.pdf

The job is up to you now.
 
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Gubenco

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@Ink stained Fingers You are right. There is no 1440 (whatever we call it). The printer knows only about 720 pipi image and whatever I send to the printer it downsamples the image to a 720x720 ppi. I have done a lot of printing tests last days and I know for sure than my model (epson 1500w) is not capable to print a 1440ppi image.

I would like to know how they (the printer manufacturers) call this parameter "720x720 something somethig maximum allowed". I have found terms like "native resolution"but never on the manufacturer website at printer specs.
It should have a name and I need to know it because I expect someday I'll find a more capable printer.

Any way I would like to see how some more expensive printers perform. Maybe Canons, as I have no experience with them.

Thank you.
 

Gubenco

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Is there any possibility to tap into the printer driver to override its rendering method?
 

The Hat

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Any way I would like to see how some more expensive printers perform.
With all of the great work that you’ve done with your art work, and yet you still don’t quite understand how an inkjet printer works, the resolution of the printer doesn’t matter as I demonstrated with your own 1200.PNG files.

No printer is going to print any better than your current Epson printer will, because it’s the quality and size of your image that determines the final outcome, not the printer.

A one metre image will print with huge PPI if the image prints on paper at 10cm. and a 10cm image when set to printout on 100cm paper will have very low PPI, (Pixelated) and the image will be un-recognisable.

As I showed, your 1200.png file when printed at same size gave 1199 PPI and the same file when scaled to 337% has a 355 PPI, so I did one more for you and achieved your .1445 PPI, but the image was only 83%.


Untitled-1.png
 

Ink stained Fingers

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Any way I would like to see how some more expensive printers perform.
I'm afraid your search is futile, it's not a matter of price , current inkjet printers do 600 - 720 dpi hardwarewise which results eff. in some lower value as explained and and visible with the Roger Clarke pattern - mech. tolerances - ink spread etc. - Inkjet printers don't print microfilms, and since it's a hardware limit a RIP won't overcome those limitations.
 
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