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Lexmark XC4150

Lexmark XC4150

Lexmark Scanner Technology ? Comparison of Lens Reduction Scan Module (LRSM) and Contact Image Sensor Module (CISM)

Audience: ‘Lexmark only’ below

Overview

This document presents a basic comparison of two scanner technologies used in some of Lexmark’s multifunction printers: Lens Reduction Scan Module (LRSM) and Contact Image Sensor Module (CISM).

IMPORTANT! This information is considered Lexmark confidential and should never be sent to a customer, nor shared in databases or other systems outside of Lexmark’s knowledgebase.

Form and Size Comparison

LRSMCISM

Basic Comparison

LRSM
CISM
Trilinear CISM
Cost (A4 Size)~$20~$10~$17
Module/Scanner SizeBulkySlim
Optical DesignComplexSimple
Optical DistanceLarge 30-50cmSmall 1-2cm
Depth of Field/FocusBest >2cm Less restrictions on paper pathVery Shallow <0.25cm
Effective Width> 225mm< 219mm
E-Deskew SupportYesNo (Too Narrow)
Overall Image QualityBetterGoodBetter
Highlighter CopyBetter Tuning Mitigation NeededBad (Physically can’t resolve highlighters because no color filters)Better Tuning Mitigation Needed
Color Fringing Auto Mono/Color DetectBetterBad ASIC Mitigation NeededBetter
Chip GapNoneBad ASIC Mitigation NeededBad ASIC Mitigation Needed

Current Products

Model
Color/Mono Engine
Scanner Technology
MX31x, MX41x, MX51xMonoCISM
CX31x, CX41x, CX51xColorLRSM
MX61xMonoLRSM
X74xColorLRSM
CX725ColorLRSM
MX71x, MX81xMonoDual LRSM
X79xColorDual LRSM
CX82x, CX86xColorDual LRSM
X925ColorLRSM
X950ColorLRSM
MX91xMonoLRSM (Frontside) Trilinear CISM (Backside)

Output Comparison

Depth of Focus/Field
LRSMCISM
Color Fringing
LRSMCISM
Highlighter Scan
LRSMCISM

LEGACY ID: FA1179

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