New technology raises the bar on scanners

New technology raises the bar on scanners

By Zatni Arbi

JAKARTA (JP): Flatbed scanners are definitely one of the
computing products that are catching on very fast. While the
number of scanner makers keeps growing -- Acer, Agfa, Epson, HP
and Umax just to name some of them -- the scanning capabilities,
features and ease of use also get better and better.

The past month witnessed the arrival of new flatbed scanners
from Canon. Two weeks ago, Epson launched its new Perfection
series scanners, and I am expecting Hewlett-Packard to unveil new
scanners as it introduces a slew of new products on Tuesday.

Epson has changed the name of its scanner lineup from the
simple "GT" plus a number to Perfection as it intends to provide
full-scale printing solutions. Four Perfection series scanners
were introduced: the Perfection 610, 1200U, 1200S and 1200P.

You can easily guess the optical resolution capability of each
by the digits. The Perfection 610 can scan at 600 x 1200 DPI,
while the others can scan to 1200 x 2400 DPI. The term "optical
resolution" refers to the actual number of photosensitive dots in
the Charge Coupled Device (CCD).

With the help of software, the number of pixels can be
increased to gain more details of the scanned image. Thus, the
Perfection 1200 series can virtually create a scanned image file
with a 9600 DPI resolution. Just remember that higher
resolutions, however, also mean that you will have very large
image files, which will also require a lot of storage space.

Another thing that you can immediately guess is the meaning of
the letter at the end of each scanner's name. The 1200 models use
the USB or the SCSI interface. Hence the U and the S.

Midrange and up

Unlike other scanner makers that cater to the needs of home
users on very limited budgets, Epson does not have a truly low-
end scanner. The Perfection 610 requires a PC with a USB port and
Windows 98, a Power Macintosh G3 or an iMac with System 8.5 or
later (or System 8.1 with iMac Update 1.0). Epson positions it
against the HP ScanJet 5200, which costs a little higher as it is
already next to HP's top end, the ScanJet 6300.

Professional graphics workers will want the Perfection 1200
series. The US$340 Perfection 1200Photo comes bundled with a film
adapter that enables us to scan positive as well as negative
film. The software will automatically detect which of these is on
the scanner. The film adapter is optional for the other
Perfection1200 series. If the PC or Mac is connected to a photo
printer, the scanner can easily duplicate a photo using the
bundled Epson Instant Photo Print. An Automatic Document Feeder
(ADF) is optional for all 1200 models.

One touch scanning is as common today as the street rallies
for cash just a few weeks ago. Therefore it's not surprising that
these scanners also have a button that can be programmed to
automatically run any of the bundled program -- Imaging, Presto!
PageManager, PhotoDeluxe -- or any other program that we can add
ourselves.

These scanners have their own processor that handles tasks
such as CCD line distance correction, gamma correction, shading
correction, zoom, color correction and digital halftoning. The
best feature, in my opinion, is the ability to eliminate
background color that usually impairs character recognition.

So, for example, when we scan a color brochure, a new feature
called Text Enhancement Technology (TET) will grab the text but
not the background, resulting in cleaner text that allows for
more precise recognition.

Other new technology

To be able to scan at a high resolution, the scanner head
should move at a precise pace. Epson touts its Micro Step Drive
technology that ensures that the scanner head moves forward at
the right pace so that no detail is missed. This also means that
the scanner head should be able to accelerate and decelerate at
the right time.

Using the software, we can adjust the resolution level that we
want. The good thing about these new scanners is that the
activity of the scanning head is adjusted to the level of
resolution that we want. So, for example, when we tell it to scan
at 72 DPI, only 12 percent of the CDD is active, and therefore
the scanning can take much shorter time to complete.

Epson calls this new technology "On demand pixel optimizer".
Other scanners will normally scan at a constant resolution and
drop the pixels as the data is imported into the scanning
software. To ensure that the result will be uniform across the
entire width of the scanning head, Epson has also paid close
attention to the construction of the lens.

Simple design

While other scanners on the market tend to adopt more rounded,
"aerodynamic" looks, these Perfection series scanners still look
boxy as the Kijang van of the early 1980s. The gray color is
accentuated only by the violet button face on the left corner at
the top. It has no external power adapter, which I consider a
plus. There is no power button, either.

The device will shut down automatically if it does not receive
any signal from the PC or the Mac after 10 minutes. The housing
itself feels sturdy. The lock, which will protect the sensitive
scanner mechanism during transport is on the left side and can be
turned using a coin. The cover can be detached easily so you can
easily place a thick book on it.

While the Perfection 1200 series come with TextBridge Classic,
a reputable Optical Character Recognition software, the
Perfection 610 does not come with any OCR software. An OmniPage
LE would be a welcome extra.

Another limitation of these letter-sized scanners is that they
come only with USB and SCSI connection. The 1200 S, which is more
expensive (US$305), comes with a SCSI card. If you have an older
PC that has no USB port, you will have to buy a USB adapter (Rp
175,000 at Mangga Dua Mall) before you can use the 1200 U ($279)
or the 610 ($170). Then again, this card is a PCI board. If you
still have a 386 machine, even Perfection 610 is not for you.

But if you want a high-quality and fast scanner that is easy
to use, and especially if you work with text with colored
backgrounds, the Perfection series is worth a serious look.