Oki OKIFAX4550 Maintenance Manual page 21

No. Item
13 Scanning resolution
14 Image scanning method
15 Contrast control
16 Recording resolution
17 Recording system
18 Skew of recording paper
19 Copy darkness
20 Copy uniformity
41309401TH Rev.4
Table 1.1 (5/11) Basic Performance Specifications
Horizontal:
• 300 dot/inch
Note 1: In the local copy at standard (STD) resolution the
Vertical:
Transmission mode:
• 300 dot/inch 3.85 line/mm (STD), 7.7 line/mm (FINE) or
Note: 300 dpi × 300 dpi: Transmission is available
COPY mode:
• 3.85 line/mm, 7.7 line/mm, 15.4 line/mm.
NA Letter size (2592-bit) contact image sensor
1) Automatic background sensing
A continuous document background of 0.3 OD (optical
density) or less will be transmitted as white.
2) The LIGHT and DARK contrasts will automatically be
adjusted to improve image quality.
Slice level shifting has 3 levels of switch selection on
operation panel.
Horizontal:
• 300 dot/inch
• 600 dot/inch for OKIOFFICE87.
Vertical:
Fixed: 3.85 line/mm (STD), 7.7 line/mm (FINE), 15.4 line/
Variable: Automatically adjusted to the paper length.
• 784 to 1076 dot/inch
• 300 to 412 dot/inch
• 3.85 to 5.06 line/mm (STD)
• 7.7 to 10.13 line/mm (FINE)
• 15.4 to 20.24 line/mm (EX. FINE)
Electro-photographic printing
1) 211.3mm (2496 bit) or 216.7mm (2560 bit) LED print head
Maximum allowable skew is + or - 1 mm over an advance of
100 mm.
1) Black image:
2) White background: Not greater than 0.2 OD
Printed copies will exhibit a uniform density of the printed and
background area:
1) From edge to edge:
2) From copy to the next copy:
Specifications
dpi conversion is done from 300 dot/inch to 200
dot/inch.
2: 600 dpi × 15.4 line/mm : Copy is available for
OKIOFFICE87.
15.4 line/mm (EX.FINE)
mm (EX-FINE) 300 dot/inch (EX-FINE)
Greater than 1.2 OD (Optical density)
(Optical density)
25%
30%
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