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Relative Colorimetric, Absolute Colorimetric

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1. Describe the color behavior of a device as accurately as possible by using an ICC profile. The color behavior of a device can be described by taking various RGB or CMYK combinations, sending them to a device, measuring the resulting output, and expressing it in a device-independent color space (for example, CIE Lab). The resulting relationship is stored in an ICC profile, which is a standard file that translates the color space of a device(CMYK or RGB) to a device-independent color space (for example CIE Lab). The process of generating an ICC profile is called profiling. 2. Convert colors as effectively as possible by using a Color Management System (CMS). A CMS is software that uses information from ICC profiles to transform the color space of one device (defined by a source profile) into the color space of another device (defined by a destination profile). In this solution, difficulties arise with the colors that exist in the gamut that one device uses and that the other does not use. The following four settings describe a CMS: ● CMS: Color Management System. The software that converts the color information that is stored in the input image (defined by a source profile) into an output image that has the color space specified by a destination profile. Many different CMSs are on the market: in software programs, in operating systems, and in printing software, including the D5800 internal RIP. ● Source profile: a description of the color behavior of the input device ● Destination profile: a description of the color behavior of the output device ● Rendering intent: the most difficult challenge in color management is when a color in the source gamut does not correspond directly to a color in the destination gamut. When a perfect match is not possible, choices must be made about how to treat gamut differences. These choices are called rendering intent. There are four different possibilities depending on the final output that you want to achieve. ◦ Use Perceptual for the most pleasing final output. It is suitable for photographic content. ◦ Use Saturation for vivid final output. It is suitable for business graphics (charts, presentations, and so on), but is not recommended for color matching. ◦ Use Relative Colorimetric for press proofing. This rendering intent provides a match for colors that are inside both the source and destination gamuts, and minimizes differences when a match is not possible. ◦ Use Absolute Colorimetric for press proofing (like Relative Colorimetric), when you also want to simulate the color of the source's paper. The following are the most commonly used device color spaces and profiles: ● RGB mode: 80 Chapter 7 Color management ENWW

Section	Page
Introduction	9
Safety precautions	10
Product models	10
Use of this guide	10
Introduction	10
Use and maintenance	10
Troubleshooting	11
Support and specifications	11
Appendices	11
Glossary	11
Index	11
Warnings and cautions	11
The printer’s main features	12
The printer’s main components	12
Front view	13
Rear view	14
The front panel	14
Printer software	15
The Embedded Web Server’s main components	16
Main tab	16
Setup tab	16
Support tab	16
The HP Designjet Utility’s main features	16
The printer’s internal prints	17
Turn the printer on and off	17
Connectivity and software instructions	19
Choose which connection method to use	20
Connect to a network (Windows)	20
Connect to a network (Mac OS X)	21
Uninstall the printer software	22
Personalize the printer	23
Change the language of the front-panel display	24
Access the Embedded Web Server	24
Change the language of the Embedded Web Server	24
Access the HP Designjet Utility	25
Change the language of the HP Designjet Utility	25
Change the sleep mode setting	25
Turn the buzzer on and off	25
Change the front-panel display contrast	25
Change the units of measurement	26
Configure network settings	26
Change the graphic language setting	27
Personalize the list of paper types	27
Select paper mismatch action	28
Handle the paper	29
Overview	30
Use paper	30
Drying time	31
Supported paper types	31
Load a roll onto the spindle	32
Load a roll into the printer	34
Load extra-wide paper	35
Load a roll into the printer using edge holders	36
Unload a roll from the printer	37
The take-up reel	37
The loop-shapers	37
Load a roll onto the take-up reel	38
Unload a roll from the take-up reel	43
View information about the paper	44
Perform paper advance calibration	45
Overview of the paper advance procedure	46
Return to the default calibration	46
Download paper presets	46
Use non-HP paper	47
Cancel the drying time	48
Change the drying time	48
Printing paper info	48
Feed and cut the paper	48
Store the paper	49
Order paper	49
Non-recommended paper types	49
Handle the ink system	50
Ink system components	51
Ink cartridges	51
Replace ink cartridges	51
Safe mode	52
Printheads	52
Maintenance cartridge	53
Ink system tips	53
Work with ink system components	53
Remove an ink cartridge	53
Insert an ink cartridge	55
Remove a printhead	56
Insert a printhead	58
Clean (recover) the printheads	61
Clean the electrical connections on a printhead	61
Clean the printhead drop detector	63
Align the printheads	65
Reinsert printheads procedure	65
Image Quality Maintenance menu procedure	65
Scanning errors during alignment	66
The Image Diagnostics Print	66
Corrective action	67
Remove the maintenance cartridge	67
Insert the maintenance cartridge	69
Check the status of the ink system	70
View ink cartridge information	70
Front panel procedure	70
HP Designjet Utility procedures	71
View printhead information	71
Order ink supplies	71
Print options	73
Create a print job	74
Using the Embedded Web Server to print files	74
Printing stored jobs	75
Select print quality	75
Print a draft	76
High-quality printing	76
If you have a high-resolution image	76
Select paper size	77
Custom paper sizes	77
Select margins options	78
Rescale a print	78
Preview a print	79
Print 16-bit color images	79
Change the treatment of overlapping lines	80
Print crop lines	80
Rotate an image	80
Autorotate	81
Print in gray shades	82
Use paper economically	82
Nest jobs to save paper	83
When does the printer try to nest pages?	83
What pages can be nested?	83
Which pages qualify for nesting?	83
How long does the printer wait for another file?	84
Use ink economically	84
Color management	85
What is color?	86
The problem: color in the computer world	86
The solution: color management	87
Color and your D5800 Printer	89
A summary of the color-management process	89
Color calibration	90
Color profiling	91
Create your own profile	91
Use a third-party profile	92
Profile your monitor	92
Color-management options	92
Color management example with Photoshop	93
Synchronized color management with Photoshop	93
Color-adjustment options	93
Printing in color	93
Printing in grayscale	94
HP Professional PANTONE* Emulation	95
Color emulation modes	95
CMYK color emulation	96
RGB color emulation	97
Job queue management	98
Embedded Web Server job queue page	99
Job preview	99
Turn off the job queue	100
Pause the job queue	100
Select when to print a job in the queue	100
Identify a job in the queue	100
Prioritize a job in the queue	101
Delete a job from the queue	101
Reprint or copy a job in the queue	101
Job status messages	101
Remove a hold	102
Retrieve printer usage information	103
Get printer accounting information	104
Check printer usage statistics	104
Printer statistics with the Embedded Web Server	104
Printer statistics with the HP Designjet Utility	104
Check ink and paper usage for a job	104
Ink and paper statistics with the Embedded Web Server	104
Ink and paper statistics with the HP Designjet Utility	105
Practical printing examples	106
Overview	107
Resize an image with Adobe Photoshop CS4	107
Application settings	107
Print a color photo with Photoshop CS2	109
Print a draft for revision with the correct scale	110
Using Adobe Acrobat	110
Reprint a job with consistent colors	113
Scenario 1	113
Scenario 2	114
Use ESRI ArcGIS 9 to print a map	114
Use the Windows printer engine	115
Use the ArcPress printer engine	116
Maintain the printer	118
Clean the exterior of the printer	119
Clean the platen	119
Clean the paper-advance sensor window	120
Lubricate the printhead carriage	121
Maintain the ink cartridges	122
Perform preventive maintenance	122
Move or store the printer	122
Update the printer firmware	123
Secure disk erase	124
Accessories	125
Order accessories	125
Troubleshoot print-quality issues	126
General advice	128
Troubleshooting tools	128
Optimize print quality	128
Optimization suggested actions	128
Most-common issues resolution	129
Lines are too thick, too thin, or missing	129
Lines appear stepped or jagged	130
Parts of lines or text are missing	130
Lines are printed double or in the wrong colors	130
Lines are blurred (ink bleeds from lines)	131
Lines are slightly warped	132
Dark or light horizontal lines across the image (horizontal banding)	132
Dark or light vertical lines across the image (vertical banding)	132
The image is grainy	133
The printed output is not flat	133
The print smudges when touched	134
Ink marks appear on the paper	134
Smears on the front of coated paper	134
Smears or scratches on the front of glossy paper	135
Ink marks on the back of the paper	135
Defects near the top of a print	135
Colors are inaccurate	135
PANTONE* colors are inaccurate	136
The output is completely blank	136
The output contains only a partial print	136
The image is clipped	137
The image is in one portion of the printing area	137
The image is unexpectedly rotated	137
The print is a mirror image of the original	138
The print is distorted or unintelligible	138
One image overlays another on the same print	138
Pen settings seem to have no effect	138
The image has a wood-grain appearance (aeroworms)	138
A square is not square	138
Color drift on area fill edges	139
Troubleshoot paper issues	140
The paper cannot be loaded successfully	141
The paper has jammed	141
Check the printhead path	141
Check the paper path	143
Automatic paper-cutter does not function	143
The paper has jammed in the take-up reel	143
The take-up reel does not wind	143
Troubleshoot ink-system issues	145
Cannot insert an ink cartridge	146
Cannot insert a printhead	146
Cannot insert the maintenance cartridge	146
Front panel recommends reseating or replacing a printhead	146
Clean the printheads	146
Align the printheads	147
Reinsert printheads procedure	147
Image Quality Maintenance menu procedure	148
Scan errors during alignment	148
Troubleshoot other issues	149
The printer is not printing	150
The software program slows down or stalls while generating the print job	150
The printer seems slow	150
Communication failures between computer and printer	151
Cannot access the Embedded Web Server	151
“Out-of-memory” error message	152
The platen rollers squeak	152
Cannot access the HP Designjet Utility	152
Print job canceled and purged when held for preview	152
Printer alerts	153
HP Customer Care	154
Introduction	155
HP Professional Services	155
Knowledge Center	155
HP Start-up Kit	155
HP Care Packs and Warranty Extensions	155
HP Installation	156
HP Instant Support	156
HP Proactive Support	156
Customer Self Repair	157
Contact HP Support	157
Telephone number	158
Overnight job scenario	159
Task 1: Handle the digital content	159
Task 2: Handle the paper	159
Task 3: Handle the ink system	160
Task 4: Handle print jobs	161
Task 5: Adjust printed images	161
Urgent walk-in job scenario	162
Task 1: Handle the digital content	162
Task 2: Handle print jobs	162
Task 3: Handle the paper	163
Task 4: Handle the ink system	164
Task 5: Adjust printed images	164
Front-panel menus	166
Paper menu	167
Job management menu	168
Ink menu	169
Setup menu	170
Image quality maintenance menu	172
Connectivity menu	173
Internal prints menu	174
Information menu	175
Front-panel error messages	176
Printer specifications	179
Functional specifications	180
Physical specifications	181
Memory specifications	181
Power specifications	182
Ecological specifications	182
Environmental specifications	182
Acoustic specifications	183
Glossary	184

Match case Limit results 1 per page

Describe the color behavior of a device as accurately as possible by using an ICC profile.

The color

behavior of a device can be described by taking various RGB or CMYK combinations, sending them to a

device, measuring the resulting output, and expressing it in a device-independent color space (for

example, CIE Lab). The resulting relationship is stored in an ICC profile, which is a standard file that

translates the color space of a device(CMYK or RGB) to a device-independent color space (for example

CIE Lab). The process of generating an ICC profile is called profiling.

Convert colors as effectively as possible by using a Color Management System (CMS).

A CMS is

software that uses information from ICC profiles to transform the color space of one device (defined by

a source profile) into the color space of another device (defined by a destination profile). In this

solution, difficulties arise with the colors that exist in the gamut that one device uses and that the other

does not use.

The following four settings describe a CMS:

●

CMS:

Color Management System. The software that converts the color information that is stored in the

input image (defined by a source profile) into an output image that has the color space specified by a

destination profile. Many different CMSs are on the market: in software programs, in operating systems,

and in printing software, including the D5800 internal RIP.

●

Source profile:

a description of the color behavior of the input device

●

Destination profile:

a description of the color behavior of the output device

●

Rendering intent:

the most difficult challenge in color management is when a color in the source gamut

does not correspond directly to a color in the destination gamut. When a perfect match is not possible,

choices must be made about how to treat gamut differences. These choices are called rendering intent.

There are four different possibilities depending on the final output that you want to achieve.

◦

Use

Perceptual

for the most pleasing final output. It is suitable for photographic content.

◦

Use

Saturation

for vivid final output. It is suitable for business graphics (charts, presentations,

and so on), but is not recommended for color matching.

◦

Use

Relative Colorimetric

for press proofing. This rendering intent provides a match for colors

that are inside both the source and destination gamuts, and minimizes differences when a match

is not possible.

◦

Use

Absolute Colorimetric

for press proofing (like Relative Colorimetric), when you also want to

simulate the color of the source’s paper.

The following are the most commonly used device color spaces and profiles:

●

RGB mode:

Chapter 7

Color management

ENWW