Epson Stylus 1500w - Missing details at 1440 ppi

[Gubenco]

@The Hat
Indeed I do not fully understand what are the current inkjet capabilities and how it works. I still believe they are more capable than perform.

The image I have provided is twice larger than printer can accept (4 times more pixels per inch).

If you open it in Photoshop and resize it (50% smaller) with nearest neighbor algorithm then you'll get exactly the pattern we have printed all these days.

I am searching everywhere if it is possible to access the printer's algorithm for pixel rendering. It looks like currently my printer needs 16 droplets to render a pixel (5760x1440)/(720x720) =16 is it for redundancy or to overcome some artifacts I do not know.
I would like to see how a pixel look with less droplets, like maximum 4 droplets.

I know there are modified printers for gray colors only (like 7 greys and one black). I'd like to ask who use this type of printer, Are you limited to 600/720 ppi as well for the b/w printings or the rip software you are using can handle 1440 ppi?

 

[Gubenco]

I'm afraid your search is futile.

I hope not. I need more resolution. More more more.

 

[maximilian59]

There is another interesting article at LuLa
A new Printer/Media Resolution test target (Read 26602 times)

 

[Gubenco]

Hello @maximilian59
I know the maximum resolution of my printer it is 720. I would like to know it your Canon does better. I am in a denial at moment I hope I can find something bette. Right now I am looking maybe there is something to unlock some printer hidden capabilities. I have sent a message to Epson (usually they do not bother to answer). I have asked them if they have or plan to release something with "native"1440 or better.

 

[stratman]

I hope not. I need more resolution. More more more.

Why?

Have you been able to print your hologram/project at any resolution? If not, what is your process/procedures and what has been the wall you have run up against? Holograms using an inkjet printer (and special paper) is already done.

https://blog.drupa.com/de/printing-holograms/

I asked you before why the Nearest Neighbor interpolation and you said because you have a "small pixel budget" What does that mean??

For the larger print size you stated previously (meters), what resolution is required? How did you come to this determination? What is the standard to compare against?

I still do not understand what it is you want to do or how you plan on doing it or the materials you want to use. The compartmentalization reduces us to the proverbial blind examining an elephant.

 

[stratman]

interesting article at LuLa

Thanks!

 

[The Hat]

I hope not. I need more resolution. More more more.

If you want to print a perfect circle of any size, then you increase the resolution in your image, the printer can’t do that for you, it can only reproduce the image you send it..

Your current printer is more that capable of reproducing your image correctly..

A new Printer/Media Resolution test target (Read 26602 times)
Quote:- Bart_van_der_Wolf
Yes, these high DPI settings are mainly changing the dithering behavior, but not the real resolution. Resolution is still limited to 720 pixels per inch on Epsons, and only if the 'finest detail' option is used (otherwise it drops back to 360 PPI).

 

[Ink stained Fingers]

Are we going in circles ? When I look to a print format of 8.5 x 11 inches - not A4 - I try to avoid the inch/cm conversion - I would need 8.5 x 720 x 11x720 pixels = 3960 x 7920 pixels = 31,363,200 pixels - I have not seen
such a data file for print in all your discussion , and since you are pushing to 1440 dpi this would make another 2x2 increase to 125 MByte. Even if you could place the ink dots at smaller distances the ink spread would over up smaller details. You would need smaller droplets to start with.

There is another interesting article at LuLa
A new Printer/Media Resolution test target (Read 26602 times)

I don't like test images in jpg format - you can see areas smoothed out after decompression, lots of
jpg artifacts along edges as well and box like repetitive patterns in the pixel patterns from the jpg compression algorithm.

 

[The Hat]

Are we going in circles

O' yes definitely we are big time, it's 48 posts now and still going strong .. more to come I suspect..

 

[maximilian59]

I don't like test images in jpg format - you can see areas smoothed out after decompression, lots of
jpg artifacts along edges as well and box like repetitive patterns in the pixel patterns from the jpg compression algorithm.

When I open the files they are in TIF format not jpg.