Lexmark C748 Color Quality Guide

Use To
Color Saver
On
Off
Reduce the amount of toner used for graphics and images. The amount of toner used for text
is not reduced.
Notes:
• Off is the factory default setting.
• On overrides Toner Darkness settings.
RGB Brightness
‑6 to 6
Adjust brightness in color outputs.
Notes:
• 0 is the factory default setting.
• This does not affect files where CMYK color specifications are being used.
RGB Contrast
0–5
Adjust contrast in color outputs.
Notes:
• 0 is the factory default setting.
• This does not affect files where CMYK color specifications are being used.
RGB Saturation
0–5
Adjust saturation in color outputs.
Notes:
• 0 is the factory default setting.
• This does not affect files where CMYK color specifications are being used.
Color Balance
Cyan
‑5 to 5
Magenta
‑5 to 5
Yellow
‑5 to 5
Black
‑5 to 5
Reset Defaults
Adjust color in printed output by increasing or decreasing the amount of toner used for each
color.
Note: 0 is the factory default setting.
Color Samples
sRGB Display
sRGB Vivid
Display—True Black
Vivid
Off—RGB
US CMYK
Euro CMYK
Vivid CMYK
Off—CMYK
Print sample pages for each of the RGB and CMYK color conversion tables used in the printer.
Notes:
• Selecting any setting prints the sample.
• Color samples consist of a series of colored boxes along with the RGB or CMYK
combination that creates the color observed. These pages can be used to help decide
which combinations to use to get the desired printed output.
• From a browser window, type the IP address of the printer to access a complete list of
color sample pages from the Embedded Web Server.
Color quality guide
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Lexmark C748 Specifications

General

Color	Yes
Print technology	Laser
Time to first page (black, normal)	9 s
Print speed (black, normal quality, A4/US Letter)	35 ppm
Printing colors	Black, Cyan, Magenta, Yellow
Maximum duty cycle	100000 pages per month
Recommended duty cycle	2500 - 10000 pages per month
Number of print cartridges	1
Page description languages	Microsoft XPS, PCL 6, PDF 1.6, PPDS, PostScript 3, XHTML
Total input capacity	650 sheets
Total output capacity	300 sheets
Maximum input capacity	4300 sheets
Total number of input trays	2
Maximum number of input trays	6
Envelopes sizes	7 3/4, 9, 10, B5, C5, DL
Maximum print size	216 x 356 mm
Paper tray media types	Card stock, Envelopes, Labels, Plain paper, Transparencies
Non-ISO print media sizes	Executive (184 x 267mm), Folio (media size), Letter (media size), Oficio (media size), Statement (140 x 216mm), Legal (media size)
ISO A-series sizes (A0...A9)	A4, A5, A6
ISO B-series sizes (B0...B9)	B5
Maximum ISO A-series paper size	A4
Wi-Fi	No
Security algorithms	LEAP, MD5, PEAP, SSL/TLS
Mobile printing technologies	-
Supported network protocols (IPv4)	TCP/IP, AppleTalk
Supported network protocols (IPv6)	TCP/IP, TCP, UDP
Standard interfaces	Ethernet, USB 2.0
Optional connectivity	Parallel, Serial (RS-232), Wireless LAN
USB 2.0 ports quantity	3
Noise level (idle)	32 dB
Processor frequency	800 MHz
Maximum internal memory	1536 MB
Sound pressure level (printing)	55 dB
Display	LCD
Control type	Touch
Certification	CAN/CSA-C22.2 60950-1, CSA E60825-1, ICES-003, UL 60950-1, EN/IEC 60320-1, CE, CB IEC 60950-1, EN 60950-1, EN/IEC 61000-3, EN 55022, EN 55024, 60825-1
Product color	Black, White
Display diagonal	4.3 \
AC input voltage	220 V
Power consumption (printing)	- W
Sustainability certificates	ENERGY STAR
Minimum RAM	1024 MB
Minimum storage drive space	305 MB
Mac operating systems supported	Mac OS X 10.10 Yosemite, Mac OS X 10.11 El Capitan, Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Mavericks
Linux operating systems supported	Debian 7.0, Debian 8.0, SuSE Linux 10.2, SuSE Linux 10.3, SuSE Linux 11, SuSE Linux 11.1, SuSE Linux 11.2, SuSE Linux 12.0, Ubuntu 12.04, Ubuntu 14.04, Ubuntu 15.04
Server operating systems supported	Windows Server 2008, Windows Server 2008 R2, Windows Server 2008 x64, Windows Server 2012, Windows Server 2012 R2
Windows operating systems supported	Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 Pro, Windows 10 Pro x64, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 8, Windows 8.1, Windows Vista Business, Windows Vista Business x64, Windows Vista Enterprise, Windows Vista Enterprise x64, Windows Vista Home Basic, Windows Vista Home Basic x64, Windows Vista Home Premium, Windows Vista Home Premium x64, Windows Vista Ultimate, Windows Vista Ultimate x64, Windows XP Home, Windows XP Home x64, Windows XP Professional, Windows XP Professional x64
Operating altitude	0 - 3048 m
Operating temperature (T-T)	16 - 32 °C
Operating relative humidity (H-H)	8 - 80 %
Package depth	553 mm
Package width	588 mm
Package height	545 mm
Package weight	30100 g

Weight and Dimensions

Depth	400 mm
Width	435 mm
Height	455 mm