
Scanning
Scanner type:
Flatbed, color
Photoelectric device:
Color CCD line sensor
Effective pixels:
3400
×
4680 pixels at 400 dpi, 100%
Document size:
216 mm
×
297 mm (8.5 inches
×
11.7 inches)
A4 or US letter size
(The reading area can be specified from
your software.)
Scanning resolution:
400 dpi (main, sub)
Output resolution:
50 dpi to 1600 dpi in 1 dpi steps
Color separation:
RGB color filters on CCD
Reading sequence:
Monochrome
One-pass scanning
Color page sequence
Three-pass scanning (R, G, B)
Color byte sequence
One-pass scanning (R, G, B)
Color line sequence
One-pass scanning (R, G, B)
Zoom:
50% to 200% in 1% increments
Image data:
10 bits per pixel per color saved as 8 bits per
pixel per color maximum
Brightness:
7 levels
Line Art settings:
Fixed threshold
Text Enhancement Technology
(enable/disable selectable)
Halftoning process:
AAS (Auto Area Segmentation)
Enable/disable selectable
3 halftoning modes (A, B, and C) and
4 dither patterns (A, B, C, and D) for
bi-level and quad-level data
(2 downloadable dither patterns)
Gamma correction:
2 types for CRT display
3 types for printer
1 type for user-defined
L
GT-5500 Rev.C
A5 size
Appendix A
July-18-97
Pass 0, DR
A-2
Technical Specifications