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Chapter 2: Features, Functions, and Kits 2-9
Top Plates and Scan Windows
Top Plates
A Top Plate provides a snag-free place to scan items and protects the
internal components from contamination and liquid spills. It has an
inset Lift Tab (older units may have two) which permit the Top Plate to
be quickly removed or replaced with no tools. The scan window inset
in the Top Plate is either diamond-coated (replaceable) or sapphire
glass (permanent). When a unit has a scale, the Top Plate becomes a
part of the scale system – the scale must be recalibrated when the Top
Plate or any of its components, such as the scan window, are replaced.
The current line of 7870 Scanners and Scanner/Scales have been
upgraded to come with the Stainless Steel Top Plate as a standard
feature. Older 7870 units may have the painted steel Top Plate which
is no longer available.
Top Plate
Lift Tab
Slot (Horizontal) Scan
Window
Slot Scanner Window
The (horizontal) scan window is mounted in the Top Plate. The
window (if diamond-coated) is replaced by removing the Top Plate,
snapping out the old window, and snapping the new window in place.
The slot scanner window is available as diamond-coated glass or
sapphire glass. Diamond-coated glass was formerly known as
“scratch-resistant” glass. Sapphire glass is the upgrade and was
formerly known as “scratch-proof” glass. Other glass options such as
“hardened” and “armor” glass have been discontinued.