Better Speed than Epson Perfection 1240U

  • Thread starter Thread starter dingdongdingding
  • Start date Start date
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dingdongdingding

I have a Epson Perfection 1240U.

It's old and I find it rather slow. Are the new scanners faster ?

I dont' have the specs for 1240U anymore.

Thanks.
 
Thanks. But I dont' know how to compare. Some specs are msec / line
and some are by pages.
 
My Epson 2480 does an A4 preview in 7 seconds and a 300dpi scan in 15 secs
on my 2.4GHz AthlonXP USB2 system.
 
Thanks. But I dont' know how to compare. Some specs are msec / line
and some are by pages.
Click to expand...
It takes some math, but you can compare.

One thing you need to know, is what resolution, the manufacturer is
specifying the per page spec.

For msec / line you take the time for each line (msec multiply by the number
of lines).

Example:
The Epson 1240U spec for color says 7.0 msec/line (approx.) at 1200 dpi.

If you scan at 1200 dpi, you have 1200 lines per inch multiply by the length
of the page in inches (11 for letter) and that gives you the number of lines
per page.

1200 * 11=13200 lines/page.

To get the time for the whole page, multiply lines/page by sec/line.
Convert msec to sec. 7 msec /1000=.007 sec.

Multiply sec/line by number of lines per page.
..007 * 13200=92.4 sec per page.

From the spec for the 1240U, it should take 1 minute 32.4 seconds to scan a
letter size document in color at 1200 dpi. (You should never!)

You can compare the 1240U's scan speed at 1200 dpi (1:32.4) to any other
scanner at the same resolution (DPI).

If the new scanner is 2400 dpi and it takes the same 1:32.4/page, then the
new scanner is twice as fast because it is scanning twice the number of
lines per page in the same time.

You would never want to scan a 8.5 x 11 inch document at 1200 dpi. File size
is humungous with no real benefit (there is not that much detail in a paper
document).

I timed my Canon 8400F at 300 dpi and scanned a color 8.5 x 11 document. It
took 16 seconds for the whole page. (I am using USB 2.0). I think that is
pretty fast. It sure beats my old AcerScan 620ST.

FYI, I tried scanning a 8.5 x 11 at 1200 dpi on the Canon 8400F, it took 3
min 37 seconds. The memory size was over 300 Megabytes. Complete with all
the warning messages.
 
CSM1 said:
It takes some math, but you can compare.

One thing you need to know, is what resolution, the manufacturer is
specifying the per page spec.

For msec / line you take the time for each line (msec multiply by the number
of lines).

Example:
The Epson 1240U spec for color says 7.0 msec/line (approx.) at 1200 dpi.

If you scan at 1200 dpi, you have 1200 lines per inch multiply by the length
of the page in inches (11 for letter) and that gives you the number of lines
per page.

1200 * 11=13200 lines/page.

To get the time for the whole page, multiply lines/page by sec/line.
Convert msec to sec. 7 msec /1000=.007 sec.

Multiply sec/line by number of lines per page.
.007 * 13200=92.4 sec per page.

From the spec for the 1240U, it should take 1 minute 32.4 seconds to scan a
letter size document in color at 1200 dpi. (You should never!)

You can compare the 1240U's scan speed at 1200 dpi (1:32.4) to any other
scanner at the same resolution (DPI).

If the new scanner is 2400 dpi and it takes the same 1:32.4/page, then the
new scanner is twice as fast because it is scanning twice the number of
lines per page in the same time.

You would never want to scan a 8.5 x 11 inch document at 1200 dpi. File size
is humungous with no real benefit (there is not that much detail in a paper
document).

I timed my Canon 8400F at 300 dpi and scanned a color 8.5 x 11 document. It
took 16 seconds for the whole page. (I am using USB 2.0). I think that is
pretty fast. It sure beats my old AcerScan 620ST.

FYI, I tried scanning a 8.5 x 11 at 1200 dpi on the Canon 8400F, it took 3
min 37 seconds. The memory size was over 300 Megabytes. Complete with all
the warning messages.
Click to expand...


Hi...

For comparison purposes... scanning A4 at 300 dpi on my
Epson 3200.

Using Epson software, prescan is 6 seconds, scan is 16 seconds.

Using Silverfast, prescan is 7 seconds, scan is 17 seconds,
scan with dust removal is 33 seconds.

The measuring device is the sweep second hand on my
wristwatch :)

Take care.

Ken
 
Thanks for the education.

I compare a new Epson 2580 with my existing 1240U.

1240U, colour 1200dpi = 7 msec/line
2580, colour 600dpi, A4 = 30 sec

So to calculate the 1240U... 7*1200(dpi)*11.69(inch)/1000sec=98.186sec
for 600dpi, it should be 49.098 sec.

So the difference is 30 sec verses 49 sec. Correct ?

Instead of me trying to calculate for every scanner, what is a fast
scanner for home use ? I regularly scan documents for archiving
instead of keeping hardcopy. Thanks.
 
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