First off, I'd be happy to be wrong about this. My understanding about the types of line sensors currently used could be mistaken.
"1 inch", "6400 spi", "8 inch".... were simply examples. I didn't say that any given sensor was 1" long.
I did talk about the various kinds of flatbed scanners, right?
My scanner (Screen Cezanne) does have a hard limit to resolution over a given area due to to the nature of the sensor. It can scan at higher resolutions over a narrower area, as per Screen's documentation, and my own experience using a Edmund Optics' chrome-on-glass high resolution target. It is an xy zoom scanner. See: http://www.screen.co.jp/ga_dtp/en/ne...ewsbox_7_2.pdf
But perhaps Epson has made some huge strides in linear ccd maximum size over the years that I don't know about. The way to confirm one way or the other, other than to have an Epson engineer specify which sensor is used, and it's specifications, or someone tearing apart their scanner to find a part number, would be to scan a resolution target two times. First, scan as if it was a 35mm negative. Second, scan as if it was a larger negative but use the same settings for all other aspects of the scan. If I'm wrong, then the resolution resolved would be the same in both cases. If the resolution resolved is less with the larger area scan, than my suspicion would be confirmed.
Consumer scanner manufacturers are cagey about true hardware specifications, and so it can be challenging to know what's really going on in a scan.
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