-------- Original Message --------
Subject: RE: [Fwd: Large size Scanners]
Date: Thu, 13 Feb 2003 13:34:33 -0700
From: "Ryan Morgan, Aerials Express" <[log in to unmask]>
To: "Maps and Air Photo Systems Forum" <[log in to unmask]>

------------------
Here is a post from the MapInfo-L listserve on the same topic.  It was
posted earlier this week, perhaps it can help you.  Pay special
attention to
this person's advice on warranties...

Buying a large format scanner is similar to buying a small format
scanner
with a few variations.

There are two general types, flat beds (up to 54 inches on a side) and
roll
types.  In the flat beds, the scanner head moves over the paper that is
fixed
on a platten.  In the roll type, the paper is fed beneath a fixed
scanner
head.  Some large flat beds are still made, but in the past 10 to 15
years,
the roll type taken over the market. (they have a smaller foot print,
are
lighter, advances in mechanical precision of the internal mechanics now
allows them to produce superior scans,they can scan any length of
paper,and
they can scan mylar and clear film)

the primary cost difference depends on whether you need grey scale only
or
do
you need color.  Never get a pure black and white only scanner (any dust
on
the original will show up as black dots).  The second cost factor is the
width of the scanner  (24, 36, 48, 54 inches wide).  The third is
scanning
speed.

Generally, you do not need more than 600 dpi for a large format scanner.
(400
to 600 dpi is fine unless you are doing huge blow-ups).  If you are
doing
lots of scanning, you will also need a dedicated computer and an
operator.

there are two costs you need to be concerned with.   The inital cost of
the
unit ($10,000 to 90,000 US) and the annual maintenance fee (up to $5000
US
per year).  If you do not get a maintenance contract, be prepared to pay
for
a technician to come to your office (that includes: plane fare, hotel,
generally 12 hours minimum fee at up to 250 per hour, plus parts [this
is
where they really get you- the main light bulb can cost $900 or more]}.

good quality makers of scanners include Vidar and OCE.  There are
several
others- you just have to look around.  High end makers include Anatec
(you
can spend 100,000 or more for their scanners).  The main difference in
cost
is width and scanning speed.

Ocassionally, used large format scanners show up on e-bay.  Becareful of
them. There has been s a huge advance is scan camera technology in the
past
ten years. Equipment that is 10-12 years old is almost cost prohibitive
to
keep running (many parts are no longer available.).  Things to look out
for
in a used scanner - how old is the main light bulb (they have to be
replaced
every couple of years - assume $1000 cost).  Does the scanner have the
software?  (most manufactures have their own software - can cost $1000
to
4000 to purchase it).  what is the condition of the feed rollers?  If a
scanner can scan transparencies (ie: mylar), it has a white roller. Over
time, that roller can become discolored (replacement can cost $1000 to
2000).
 What is the condition of the cameras?  In the older units, the cameras
(up
to 8 of them) had to be replaced every 4 to 6 years ($1500 each plus
aligment
by a technician).  The mechanical drive units are fairly robust and
little
goes wrong with them {except during shipping}.  Most companies will send
out
a technician to set up a used machine at your office for a 1000 to 1500
fee
(that is generally included with a new machine, but check first).

I looked into this several years ago. I eventually made a deal with my
local
Kinko's.  I send them a minimum amount of business and they charge me a
flat
fee for any sized scan.

-----Original Message-----
From: Maps and Air Photo Systems Forum
[mailto:[log in to unmask]]On Behalf Of Johnnie D. Sutherland
Sent: Thursday, February 13, 2003 1:01 PM
To: [log in to unmask]
Subject: [Fwd: Large size Scanners]


-------- Original Message --------
Subject: Large size Scanners
Date: Thu, 13 Feb 2003 09:35:08 -0500
From: [log in to unmask]
To: Maps List <[log in to unmask]>

------------------
Greetings Mappers;

I believe this came up awhile back, but I need to provide new
information
so thought I'd ask.

We are being offerred the potential to obtain a large size scanner for
maps, photos, and other large documents. Does anyone have suggestions,
experience, or any makes of equipment that you know of or have used?
Thank
you.

David J. Bertuca, Associate Librarian
Arts and Sciences Libraries
University at Buffalo Libraries
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