1-20 General Information Rev. E
1.4.5.4 Image Data Quality
❏ Be sure to include the pre-scanning step when scanning with bi-tonal, because it can
minimize as much as possible problems of decreasing image data quality caused by
environmental temperature, wear of scanner parts, great variation in color shading of the
background of a check, and input voltage fluctuation.
❏ The quality of image scanning on the front of a check may be reduced by a large variation in
density of an ink ribbon cassette.
❏ Be sure to consider these other conditions that may reduce image quality when scanning
with bitonal:
• Extremely low density of handwriting on front of a check.
• Extremely high density of the background of a check.
• An extremely large variation in the density and color tone of the background of a check.
• Many folds or wrinkles in a check.
• Exposure of the image scanning part of the printer to strong sunlight.
• A foreign object, such as sand, entering the printer and scratching the glass surface of the
scanner.
❏ Be sure to consider these other conditions that may reduce image quality when scanning
with gray scale:
• Extremely low density of handwriting on front of a check.
• Many folds or wrinkles in a check.
• Exposure of the image scanning part of the printer to strong sunlight.
• A foreign object, such as sand, entering the printer and scratching the glass surface of the
scanner.
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