Lexmark C4150 User Manual

The transfer belt carries the four-colored image towards the transfer rolls. Paper is picked up from the tray and
carried to the transfer roll where the image is transferred from the transfer belt to the paper. The timing of the
paper pick is determined by the speed of the transfer belt.
The paper is carried to the fuser rollers where heat and pressure are applied to the page to permanently bond
the toner to the page. The fuser rollers push the paper into the output bin. The transfer unit is cleaned and the
process begins again for the next page.
Step 1: Charge
During the charge step, voltage is sent from the HVPS to the charge roller beside each of the four
photoconductors. In this printer, the charge roll is part of the photoconductor unit in the print cartridges.
The charge roller puts a uniform negative charge over the entire surface of the photoconductor to prepare it
for the laser beam.
Service tips
• If the surface of the charge roller is damaged (such as a nick or pit), it will cause the charge on the
photoconductor to be uneven. This causes a repeating mark on the printed page. Check the service manual
for the repeating marks table.
• If the charge roller is severely damaged, the surface of the photoconductor will not be not be properly
charged and heavy amounts of toner will be deposited on the photoconductor. This causes the printed page
to be saturated with 100% of each color. The imaging kit will need to be replaced sooner.
Step 2: Expose
During the expose step, the laser
fires
a focused beam of light at the surface of each photoconductor and writes
an invisible image, called a latent image or electrostatic image, for each color.
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Appendix C: Theory of operation
462

Lexmark C4150 Specifications

General

Drivers included	Yes
Print technology	Laser
Maximum resolution	1200 x 1200 DPI
Time to first page (black, normal)	5 s
Time to first page (color, normal)	5.5 s
Print speed (black, normal quality, A4/US Letter)	50 ppm
Maximum duty cycle	150000 pages per month
Recommended duty cycle	2000 - 20000 pages per month
Number of print cartridges	1
Total input capacity	550 sheets
Total output capacity	300 sheets
Multi-Purpose tray input capacity	100 sheets
Envelopes sizes	7 3/4, 9, 10, B5, C6, DL
Paper tray media types	Plain paper, Recycled paper, Thin paper
Non-ISO print media sizes	Executive (184 x 267mm), Folio (media size), Letter (media size), Oficio (media size), Statement (140 x 216mm), Universal, Legal (media size)
ISO A-series sizes (A0...A9)	A4, A5, A6
Maximum ISO A-series paper size	A4
Wi-Fi	-
Standard interfaces	Ethernet, USB 2.0
USB 2.0 ports quantity	3
Maximum internal memory	3072 MB
Sound pressure level (printing)	53 dB
Control type	Touch
Product color	Black, White
Display diagonal	4.3 \
Power consumption (printing)	- W
Operating altitude	0 - 2896 m
Operating temperature (T-T)	10 - 32 °C
Operating relative humidity (H-H)	15 - 80 %

Weight and Dimensions

Depth	497.84 mm
Width	474.98 mm
Height	416.56 mm