Specifications

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Symbols on glossy paper or under a film window
With the CMOS Imager, the illumination LED will irradiate the target surface for reading symbols.
This may sometimes cause the objective symbol to fade into the background due to the adverse
effect of the reflected light of the LED when the symbol is printed on a glossy paper or covered by
a film window.
In order to read symbols under such conditions, either reduce the LED illumination using the
“Adjusting LED illumination intensity”, as described, or turn off the LED so that the
reading is made under the ambient light only.
Mobile symbols (for a reference)
Mobile symbols (displayed on LCDs of cellular phones) can be read easily if you turn off the
illumination LED and turn on the backlight. However, the terminal does not formally support the
mobile symbol read function.
Tips to optimum image capturing
• The printed bar width for 1D symbols and 2D symbols should be 0.2 mm or greater and 0.38
mm or greater, respectively.
• Be aware of the number of digits the symbol represents.
• Check the resolution of the printer with regard to whether a fine bar consists of 3 to 5 dots.
• Remember that a symbol copied or transmitted through a facsimile machine results in poor
printed quality.
• Do not overestimate the 2D symbol correction function.
• Do not print extra characters and figures around the symbol.
• Exercise care with the reflected light of the LED when reading a symbol on a glossy paper or
behind a film.