Brother MFC-9440CN Service Reference Manual

Confidential
Ref. 2-19
3.4 Print
3.4.1 Principle of Color Overlapping
The human eye distinguishes one color from others by receiving light’s three primary colors
(Red, Green, Blue). When monochrome lights are received, each color can be sensed.
However, when two-color lights, red (R) and green (G), are received, they are recognized as
“yellow”; when three-color lights, red (R), green (G) and blue (B), are received, they are
recognized as “white.” The fineness of coloration is perceived according to the nature of light.
Red
Green
Blue
White
Yellow
Cyan
Magenta
Fig. Ref2-15
For printed colors, the human eye can perceive them as various colors by distinguishing each
color light reflected off the surface of a sheet of paper.
(1) For “cyan,” since the print absorbs red (R) light of the three colors, only green (G) light and
blue (B) light are reflected, the color on the print side is recognized as a cyan color. (See
the following figure (1).)
(2) “Magenta” absorbs green (G) light and reflects red (R) light and blue (B) light. (See the
following figure (2).)
(3) If cyan and magenta are mixed, cyan absorbs red (R) light and magenta absorbs green (G)
light, and only blue (B) light is reflected. The light is identified as “blue.” (See the following
figure (3).)
Theoretically, if cyan, magenta and yellow are mixed, all the colors are not reflected and black
can be shown. However, a black mix is difficult to produce, and black is shown using black-
color paint for practical purposes. Using such a principle, color-absorbing paints are mixed to
allow many colors to be shown on the surface of a sheet of paper.
AbsorbedReflected Reflected
Cyantoner
AbsorbedReflected
Cyantoner+Magentatoner
Absorbed
Absorbed ReflectedReflected
Magentatoner
(1)Green+Blue
(3)Blue
(2)Red+Blue
B G R
B G R
B G R
Fig. Ref2-16

Brother MFC-9440CN Specifications

General

Print technology	Laser
Maximum resolution	2400 x 600 DPI
Time to first page (color, normal)	16 s
Print speed (black, normal quality, A4/US Letter)	20 ppm
Scan to	e-mail, file, image, OCR
Input color depth	48 bit
Copier resize	25 - 400 %
PC free copying	Yes
Maximum copy resolution	1200 x 600 DPI
Maximum number of copies	99 copies
N-in-1 copy function (N=)	2, 4, 9, 16
Copy speed (black, normal quality, A4)	16 cpm
Faxing	Color faxing
Fax memory	400 pages
Modem speed	33.6 Kbit/s
Fax speed dialing (max numbers)	300
Total input capacity	250 sheets
Total output capacity	150 sheets
Multi-Purpose tray input capacity	50 sheets
Auto document feeder (ADF) input capacity	35 sheets
Internal memory	64 MB
Maximum internal memory	576 MB
Sound power level (standby)	30 dB
Sound pressure level (printing)	54.5 dB
Display	LCD
Market positioning	Business
Non-ISO print media sizes	Executive (184 x 267mm), Folio (media size), Legal (media size), Letter (media size)
ISO A-series sizes (A0...A9)	A4, A5, A6
ISO B-series sizes (B0...B9)	B5, B6
JIS B-series sizes (B0...B9)	B5
Maximum ISO A-series paper size	A4
Font styles	66 Scaleable fonts, 12 Bitmap fonts, 13 Barcodes
Dimensions (WxDxH)	432 x 487 x 482 mm
Networking features	10/100 Base-TX
All-in-one functions	Copy, Fax, Scan
Color all-in-one functions	copy, fax, print, scan
Compatible operating systems	Windows Vista/XP/Home/2003/2000 Mac OS X 10.2.4 or greater Linux
Standard interfaces	USB 2.0
Power consumption (standby)	95 W
Power consumption (PowerSave)	28 W
Power consumption (average operating)	495 W
Package weight	38600 g
Sustainability certificates	ENERGY STAR
Digital sender	No