Chapter 9
9-24
9.5.6 PASCAL Control (image gradation)
The PASCAL control mechanism is used to stabilize gradation characteristics of images on paper.
It makes up for the changes in gradation occurring in response to changes in temperature/humidity or as the
machine is used over time.
- PASCAL Control for Half-Speed
The mechanism is used to correct the changes in the gradation characteristics that otherwise would occur when
thick paper, special paper, or transparency is used. The test print used for the mechanism is the same as the
test print used for plain paper.
Description of Control
Start-up
V
Prints out the test pattern stored in the main controller (3 types).
V
Uses the scanner to read the test print (previously printed out) set in the reader.
V
Prepares the image correction table A (data processing).
V
End
Timing of Control
- Service Person Interaction
The mechanism is executed when 'full correction'is executed while auto gradation correction is under way in
user mode.
MEMO;
Differences Among 3 Test Patterns
- Test Print 1
It shows 64 gradations expressed by means of error diffusion processing, which is not subject to moire
and, therefore, used in text/photo/map, print photo, and text mode.
- Test Print 2
It shows 64 gradations expressed by means of screening with a low number of lines, which is suitable for
the expression of gradation and, therefore, is used for print film photo mode and when priority is placed
on PDL.
- Test Print 3
It shows 64 gradations expressed by means of screening with a high number of lines, which is suitable for
the achievement of a high resolution and is, therefore, used when priority is placed on PDL resolution.
F-9-18
Test Print
Summary of Contents for Color imageRUNNER C5180 Series
Page 22: ...Chapter 1 INTRODUCTION...
Page 64: ...Chapter 2 INSTALLATION...
Page 110: ...Chapter 3 BASIC OPERATION...
Page 119: ...Chapter 4 BASIC OPERATIONS AS A PRINTER...
Page 129: ...Chapter 5 MAIN CONTROLLER...
Page 138: ...Chapter 5 5 8 F 5 8 CPU HDD ROM access to the program at time of execution...
Page 165: ...Chapter 6 ORIGINAL EXPOSURE SYSTEM...
Page 209: ...Chapter 7 IMAGE PROCESSING SYSTEM...
Page 212: ...Chapter LASER EXPOSURE 8...
Page 239: ...Chapter 9 IMAGE FORMATION...
Page 324: ...Chapter 10 PICKUP FEEDING SYSTEM...
Page 435: ...Chapter 11 FIXING SYSTEM...
Page 460: ...Chapter 11 11 23 F 11 13 SEN3 SEN2 SEN1 SEN2 SEN3 SEN1 SEN2 SEN3 SEN1...
Page 491: ...Chapter 12 EXTERNALS CONTROLS...
Page 498: ...Chapter 12 12 5 F 12 2 FM1 FM7 FM9 FM2 FM13 FM14 FM12 FM11 FM10 FM5 FM3 FM4 FM8 FM6...
Page 512: ...Chapter 12 12 19 2 Remove the check mark from SNMP Status Enabled F 12 10...
Page 553: ...Chapter 13 MEAP...
Page 557: ...Chapter 14 RDS...
Page 569: ...Chapter 15 MAINTENANCE INSPECTION...
Page 578: ...Chapter 16 STANDARDS ADJUSTMENTS...
Page 597: ...Chapter 17 CORRECTING FAULTY IMAGES...
Page 612: ...Chapter 17 17 14 F 17 7 PLG1 ELCB1 SP1 H4 H3 H2 H1 H1 H2 LA1...
Page 617: ...Chapter 18 SELF DIAGNOSIS...
Page 644: ...Chapter 19 SERVICE MODE...
Page 778: ...Chapter 20 UPGRADING...
Page 823: ...Chapter 21 SERVICE TOOLS...
Page 828: ...APPENDIX...
Page 851: ......