Canon i-SENSYS MF217w User Manual

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Technical Overview > Laser Exposure System > Overview > Overview
Technical Overview > Laser Exposure System > Overview > Overview
Laser Exposure System
Overview
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Overview
The laser exposure system forms static latent images on the photosensitive drum according
to the VIDEO signals sent from the main controller, and is comprised of the laser driver and
scanner motor, etc. These are controlled by the engine controller. The following is the outline.
Laser unit
Scanner motor unit
Four-faced mirror
Cylindrical lens
Photosensitive drum
Engine Controller
BD INPUT signal VIDEO signal LASER CONTROL signal SCANNER MOTOR SPEED CONTROL signal
Main controller
Focus lens
BD sensor
Collimator
lens
F-2-13
The operational sequence of the laser scanner unit is described below.
1) When the Main controller sends print instruction command, the Engine controller rotates
the Four-faced mirror, causing the Scanner motor to rotate.
2) When the Scanner motor starts to rotate, the Engine controller emits the laser forcibly
using the Laser control signal, causing the Engine controller to start rotation control for the
Scanner motor.
3) The Engine controller controls to keep a constant speed of rotation of the Scanner motor
using the Scanner motor speed control signal.
4) After the rotation speed of the Scanner motor reaches its target, the Main controller sends
VIDEO signals to the Laser driver PCB.
5) The Laser driver emits laser diode according to these signals.
6) The laser beam passes through the collimator lens and the cylindrical lens and enters the
Four-faced mirror rotating at a constant speed.
7) The laser beam reected by the Four-faced mirror is focused on the Photosensitive drum
via the image-forming lens at the front of the Four-faced mirror.
8) When the Four-faced mirror rotates at a constant speed, the laser beam on the
Photosensitive drum is scanned on the Photosensitive drum at a constant speed.
9) When the Photosensitive drum rotates at a constant speed and the laser beam is scanned
on the Photosensitive drum at a constant speed, latent images are formed on the
Photosensitive drum.

Canon i-SENSYS MF217w Specifications

General

Duplex printing	Yes
Print technology	Laser
Maximum resolution	1200 x 1200 DPI
Print resolution black	600 x 600 DPI
Time to first page (black, normal)	6 s
Print margins (top, bottom, right, left)	5 mm
Print speed (black, normal quality, A4/US Letter)	23 ppm
Copier resize	25 - 400 %
Maximum number of copies	99 copies
N-in-1 copy function (N=)	2, 4
Time to first copy (black, normal)	9 s
Copy speed (black, normal quality, A4)	23 cpm
Scan drivers	TWAIN, WIA
Grayscale levels	256
Output color depth	24 bit
Maximum scan resolution	9600 x 9600 DPI
Faxing	Mono faxing
Fax memory	256 pages
Modem speed	33.6 Kbit/s
Fax resolution (black)	200 x 100 DPI
Fax speed dialing (max numbers)	104
Digital sender	-
Maximum duty cycle	8000 pages per month
Page description languages	UFRII-LT
Paper input type	Paper tray
Total input capacity	250 sheets
Total output capacity	100 sheets
Auto document feeder (ADF) input capacity	35 sheets
Envelopes sizes	C5, DL, Monarch
Paper tray media types	Envelopes, Heavy paper, Labels, Plain paper, Recycled paper, Transparencies
ISO A-series sizes (A0...A9)	A4, A5
ISO B-series sizes (B0...B9)	B5
Maximum ISO A-series paper size	A4
Paper tray media weight (imperial)	60 - 163 lbs
Display	LCD
Control type	Touch
Product color	Black
Market positioning	Home & office
Display number of lines	6 lines
Wi-Fi	No
Wi-Fi standards	802.11b, 802.11g, Wi-Fi 4 (802.11n)
Cabling technology	10/100Base-T(X)
Ethernet LAN data rates	10, 100 Mbit/s
Standard interfaces	Ethernet, USB 2.0
Internal memory	256 MB
Sound power level (standby)	43 dB
Sound pressure level (copying)	50 dB
AC input voltage	220 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (standby)	5.4 W
Power consumption (PowerSave)	1.6 W
Power consumption (average operating)	500 W
Sustainability certificates	ENERGY STAR
Operating temperature (T-T)	10 - 30 °C
Operating relative humidity (H-H)	20 - 80 %

Weight and Dimensions

Depth	441 mm
Width	390 mm
Height	360 mm