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2.1.1 Printing Specifications
(1) Printing Process
C911/C931/C941/Pro9541WT is an electrophotographic tandem page printer. The printer
can support printing on 330-mm-wide paper. The printer feeds a paper edge horizontal to
the print width of the paper. The printer can feed paper of A4, A5, B5, Letter, 16K（3 types）
and SRA4 sizes SEF and LEF. The printer feeds paper of the other sizes SEF. Those
edges of envelopes which the printer first feed vary depending on the type of an envelope.
See 2.1.3 Paper Input/Output Specifications for description on it.
C911/C931/C941/Pro9541WT models are equipped as standard with a function of printing
both sides of paper. The printing process of the printer includes the imaging ability of the
exposure system of the printer.
(2) Maximum Area Coverage
C911/C931/C941/Pro9541WT supports area coverages of up to 300% without being
degraded in print quality, with optical densities of K1.5/YMC1.4 or less in each elementary
color(YMC)and 0.26 or more in white. Refer to 2.1.6 for the area coverages.
When printing with coverage of 240% or more including 300% process black and white, PQ
depends on the characteristics of the medium to be used.
(3) Exposure System
The exposure system of C911/C931/C941/Pro9541WT consists of four or five LED array
heads that are assembled into one piece each.
(4) Resolutions
1200 x 1200 dpi, 600 x 600 dpi, and 1200 x 600 dpi x 4bit
(5) Continuous Print Speeds (Engine Performance)
C911/C931/C941/Pro9541WT operates at a normal speed of 239mm per second, when it
prints on plain paper of up to 64 g/m
2
plain paper. The printer can perform one-sided printing,
and two-sided printing using its duplex unit, almost at the following continuous speeds (the
continuous speeds in the one-sided printing, and those in the two-sided printing, are
expressed in per-minute pages printed and in pages printed, respectively).
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