Yahoo Groups archive

Digital BW, The Print

Index last updated: 2026-04-28 22:56 UTC

Message

RE: [Digital BW] Optimal DPI

2003-02-28 by Austin Franklin

> Epson state (Epson Product Support Bulletin PSB.2002.09.004) that
> "All Epson
> large format printers use 360 dpi as the input resolution (this is the
> resolution data us rasterized at), therefore when printing from Photoshop,
> the maximum page length you will be able to output ot any Epson
> large format
> printer using the standard print driver would be 83.3 inches
> (30,000pixels/360 dpi). As for the Epson desktop products, they rasterize
> data at 720 dpi, therefore the maximum page length obtainable with the
> standard driver would be 41.67 inches (30,000/720)." They
> previously stated
> that PS has a maximum limit of 30,000 pixels.
>
> Doesn't this mean that the Epson drivers DO resample images to
> either 360 or
> 720?
>
> Bob Frost.

Bob,

Let me ask you a question about this.  It appears that, according to this,
this limit is a PS limit, not an Epson driver limit.  That's odd
though...because no matter how many PPI I send to the Epson driver (or Piezo
driver), it won't print more than 44"...but that wouldn't make it a PS
limitation, but a driver limitation.

It appears that the limitation is in the driver, and is the 30k divided by
the resample
resolution, and has not a thing to do with the resolution you send it.
What's your take on this?  If they just matched the PS limit that makes no
sense to me.

Austin

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.