ultrasonic double feed detection ---and xerox 262

  • Thread starter Thread starter ivowel
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ivowel

ok, I may have to buy another scanner.

believe it or not, xerox tech support is telling me it is a known issue
that their 262 scanner [well, entire line of 262-like scanners) cannot
reliably handle paper that is thinner than 18lbs---for example,
magazines. well, I am not even sure whether my academic journals are
using papers this thin. [it's thicker than, say, Time magazine.
anyone know what academic journals are typically printed on? I am
currently checking into it.] hard to believe that this is an award
winning scanner, and that they know of this defect, but are not telling
it in their advertising brochures.

maybe a fujitsu after all. can someone please explain to me what the
fujitsu ultrasonic double feed detection does. can it help get the
paper throughput accurate, or is it simply going to beep or stop
because it pulls double papers as often as other scanners? I need
something that pulls papers in more reliably than other scanners, not
something that stops more reliably than other scanners.

I should add that my journals are perfect paper-wise---no creases,
perfect alignment, etc.

/iaw
 
can someone please explain to me what the
fujitsu ultrasonic double feed detection does.
Click to expand...

Ultrasonic is the only technique in ADF scanners that will accurately
detect pockets of air between 2 or more sheets of paper. There needs to
be at least one sheet overlapping another page in order to trigger this
sensor making it extremely accurate and reliable.

I know I don't represent Visioneer, but I had a quick question:

I'm not sure what the person meant by 18lb paper having a known
issue... To compare, 20lb paper is what's found usually in most copy
machines and printers in the office. 18lb would be virtually the same-

Give me a call from the scanner and I'll see if I can help you out with
the DM262 .

Detection doesn't replace preperation and maintenance no matter which
scanner you end up with... Most Doublefeeds are easily identified by a
single part in the scanner- In the DM262: it's the seperation pad
assembly found inside the door of the scanner's lid. There's a rubber
part which resembles a mud flap on pickup truck which has the sole
responsiblity of holding back the stack of paper so that only the
bottom sheet pulls through. If that surface gets slick from toner,
paper dusk, ink, etc... it looses friction resulting in your
frustrations.

Using Isopropyl alcohol (70% or better) found in any convienience store
for a couple dollars: saturate a lint free cloth and wipe that rubber
surface. If the metal flatsprings appear to be excessively bent out of
shape- those flat springs would also prevent the proper friction of
paper against that pad- you could easliy flex the spring back to the
correct alignment.

Give me a call from your scanner if you have any questions..
408-996-1829

If you still want to know the details of any of the fujitsu scanners,
I'd be happy to discuss them on the phone also...

Hope this helps~

Danny Ha



ok, I may have to buy another scanner.

believe it or not, xerox tech support is telling me it is a known issue
that their 262 scanner [well, entire line of 262-like scanners) cannot
reliably handle paper that is thinner than 18lbs---for example,
magazines. well, I am not even sure whether my academic journals are
using papers this thin. [it's thicker than, say, Time magazine.
anyone know what academic journals are typically printed on? I am
currently checking into it.] hard to believe that this is an award
winning scanner, and that they know of this defect, but are not telling
it in their advertising brochures.

maybe a fujitsu after all. can someone please explain to me what the
fujitsu ultrasonic double feed detection does. can it help get the
paper throughput accurate, or is it simply going to beep or stop
because it pulls double papers as often as other scanners? I need
something that pulls papers in more reliably than other scanners, not
something that stops more reliably than other scanners.

I should add that my journals are perfect paper-wise---no creases,
perfect alignment, etc.

/iaw
Click to expand...
 
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