Canon MultiPASS C530, Руководство по обслуживанию

Страница: 148 / 243

2-69
MultiPASS C530/C560 Chapter 2: Technical Reference
8.5 Color Communications
A scanner capable of color scanning and a printer capable of color printing are combined, and a color
document is transmitted/received. Communication procedures are basically the same as conventional ECM
communications procedures, but the JPEG compression encoding method used in the compression of color
images is adopted as the compression method. This machine is capable of full color image transmission/
reception through conformation to the ITU-T standard. Because it conforms to the ITU-T standard, it can
communicate with other manufacturer's machines.
8.5.1 Specifications
Corresponding Standards
ITU-T T.30 ANNEX (JPEG color communications standard)
ITU-T T4 ANNEX E (Standard relating JPEG headers)
ITU-T T.42(Color spacing standard for FAX)
ITU-T T.81(JPEG Standard)
Scanning document size
A4
Recording paper size
A4
Resolution 200dpi
×
200dpi
Pixel / Composition elements 8bit
Color encoding method
JPEG
Color spacing
CIELAB color spacing
Illumination data
CIE standard illumination D50
Sub-sampling method 4:1:1 (=Lab)
Number of colors 24bit
Image mode Standard, fine (by changing quantization parameters)