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DirectView CR 850
Kodak DirectView CR 850 Theory Guide
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© EASTMAN K
OD
AK COMP
ANY
, 2005
HEALTH
GR
OUP
Confidential
Restricted
Information
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Theory
Guide
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ealt
h Gr
oup}
{Ext
erna
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Publication
No. TG4825
-1
10DEC05
Supersedes TG48
25-1
09JAN04
THEORY GUIDE
for the
Kodak DirectView
CR 825/850 SYSTEMS
Service Codes: 5634, 4825
Important
Qualified ser
vice personnel must repair this equipment.
H177_0500AC
2
Table of Contents
Table of Contents
2
Equipment Description
5
Features and Functions
5
Main Subsystems
10
Radiography Theory
13
Comparison of Film/Screen and Computed Radiography (CR)
13
Overview of CR Technology
17
Operations
17
Exposing the STORAGE PHOSPHOR SCREEN
17
Stimulating the PHOSPHOR
19
Changing Light Energy to an Analog Signal
20
Changing Analog Signals to Digital Signals
21
Processing the Digital Image
22
Sequence of Operation
23
Overview of Workflow Using the CR 825/850 SYSTEM
23
Before Loading the CASSETTE
24
Loading the CASSETTE
24
Fastening the PLATE
26
Preparing to Scan
27
Scanning the SCREEN
28
Erasing the SCREEN
29
Inserting the PLATE Back into the CASSETTE SHELL
30
Removing the CASSETTE
30
Storage Phosphor Cassette
32
Overview
32
Size and Resolution of SCREENS
34
Fast Scan / Slow Scan Directions
36
Image Matrix Size
37
Reading the BAR CODE LABEL of the CASSETTE
39
Cassette Handling
41
Overview
41
Duplex Cam Ay
42
Cassette Entry
46
Cassette Transport
49
Plate Handling
52
Optical
54
Overview
54
Laser Galvo
55
COLLECTOR and PHOTOMULTIPLIER TUBE (PMT)
62
Scan/Erase
68
Overview
68
Plate Positioning Ay Lead Screw Extraction Bar Reference Sensor S9
69
Plate Present Sensor S5
73
Slow Scan Motor
73
Encoder
77
Erase Ay
78
Lamp Current Sensors Cs1 - Cs5
79
Imaging Sequence
80
Overview
80
Scanning the SCREEN - Slow Scan/Fast Scan
81
Obtaining the Image Data
83
Processing the Data
86
Processing the Image
87
Logic and Control
89
Overview
89
Operator Input Components
90
Boards
93
Distribution of Images to the Network
102
Overview
102
Sequence of Operation
103
Power Distribution
105
Overview
105
Power Supply
106
Other manuals for Kodak DirectView CR 850
Diagnostics Guide
180 pages
Installation Instructions
72 pages
Preventive Maintenance
30 pages
Diagrams
12 pages
4
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Kodak DirectView CR 850 Specifications
General
Brand
Kodak
Model
DirectView CR 850
Category
Medical Equipment
Language
English
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