C. Optical (Image Scanning) Section; D. Scanner (Exposure) Section; E. Image Process Section - Sharp AR-M256 Service Manual

• Duplex
Type Switchback system
Paper size A3, B4, A4, A4R, B5, B5R, 11 x 17, 8.5 x 14,
8.5 x 13, 8.5 x 11, 8.5 x 11R
Type and weight of 56 to 105g/m
paper which can be Duplex print from manual paper feed can be
passed performed.
(Except for heavy paper, OHP sheet, and
special paper.)
∗
Judgment is made by setting the paper type
on the operation panel.
(2) Finishing ability
Paper exit section Paper exit tray (1 tray)
Paper exit face Face down
Capacity 500 sheets (80g/m
Full detection No
Paper detection Yes
Finishing Yes
Offset function Depending on the shifter.
Stapling Available when the finisher is installed.
(3) Job separator exit tray (AR-TR3)
Condition In case of Optional function (printer, FAX) is
set up as MFD.
Simultaneous Job separator tray
wrapping in kit Setting manual book
Simultaneous Setting manual book
wrapping
Function This exit tray is set up above main exit tray, and
can separate copier exit, printer exit and FAX
exit.
Many of tray 1 (this tray can not set up more than 2)
Separator system By control of main machine
Exit paper size All sizes of paper except for postcards (A6)
and envelopes.
Exit paper weight 52 to 128g/m
Paper pass Center (same as main unit)
Exit area/ finishing Face-down paper exit to the upper surface of
the main unit paper exit section
Machine weight 0.6 kg
Exit capacity 100 sheets (80g/m
Tray full detector Yes
Concept of function
Upper exit tray Copy/ FAX/ Printer
(Job separator) (This setting can be done by users.)
Lower exit tray Copy/ Printer/ FAX
(main machine (This setting can be done by users.)
exit tray)
2 / 15 to 21.3lbs Bond
2 paper)
2
(14 to 34.1lbs)
2
paper)
AR-M256/M257/M258/M316/M317/M318/5625/5631 SPECIFICATIONS 3 - 3

C. Optical (Image scanning) section

(1) Type
Document table Document table fixed type (Flat-bed type)
(2) Document reference position
Document table Rear left reference
(3) Resolution
Main scanning direction
400 dpi
(4) Gradation
256 gradations (8-bit)
(5) Original size/ Scanning area
a. Max. original size
A3 paper (11" × 17")
(6) Scanning speed
122mm/sec (600 dpi: magnification ratio 100%)
(AR-M256/ M257/ M258/ 5625)
145mm/sec (600 dpi: magnification ratio 100%)
(AR-M316/ M317/ M318/ 5631)
(7) Light source (lamp)
Type None-electrode xenon lamp
Drive voltage 1.5 kV
(8) Read sensor
Type Reduction optical system image sensor (CCD)
Monochrome

D. Scanner (exposure) section

(1) Resolution
Main scanning direction
600 dpi
(2) Gradation
2 gradations
(3) Laser unit specifications
r.p.m. 28,819 rpm (26 sheet model/FAX output)
34,252 rpm (31 sheet model)
Mirror surfaces 6 faces
Laser power 0.16mW (26 sheet model/FAX output)
0.18mW (31 sheet model)
µ (
Laser beam size 60 Main scan) x 70
Laser wave length 785nm

E. Image process section

Imaging speed 600 dpi: 122 mm/sec.
(AR-M256/ M257/ M258/ 5625)
600 dpi: 145 mm/sec.
(AR-M316/ M317/ M318/ 5631)
Photo Type OPC drum (dia. 30mm)
conductor
LIFE 25 sheet model: 75,000 sheets
31 sheet model: 100,000 sheets
Toner Type Developer (Black)
LIFE 25,000 sheets
(Toner, life:
Developer life: 75k (26 sheet model)
Charge System Charged saw-tooth
µ
Voltage 560 A constant electric current
Transfer System Transfer roller
µ
Voltage 18 A (electric current)
Exposure None-electrode xenon lamp
Sub scanning direction
600 dpi
Sub scanning direction
600 dpi
µ
(Sub scan)
25k,
100k (31 sheet model))