HP Designjet T1100ps A0 User Manual

							Notes about the document 
 
The settings and examples described in this document apply to the HP Large Format Color 
Copier products family using the latest version of HP Designjet Scan software available at 
the time of document development. 
 
 HP Large Format Color Copiers 
Integrating your printer in to your existing environment 
Color Accuracy in a proofing workflow 
 
Color reproduction for the HP Large Format Color Copier 
products family  
http://www.designjet.hp.com  Please download the latest 
PANTONE tables from the 
technical support section of:
 
						

							 
Contents 
1. INTRODUCTION TO THE DOCUMENT......................................................................... 4 
2. COLOR COPYING GUIDELINES ..................................................................................... 5 
2.1
 CHECKPOINTS BEFORE STARTING A JOB.............................................................................. 5 
2.1.1 Scanner ....................................................................................................................... 5 
2.1.2 Printer ......................................................................................................................... 6 
2.1.3 Touch screen ............................................................................................................... 7 
2.2
 TOUCH SCREEN SETTINGS DECISIONS.................................................................................. 7 
2.3
 RUNNING A JOB: OPERATOR SETTINGS............................................................................... 10 
2.3.1 Scanning.................................................................................................................... 11 
2.3.1.1 Type of original (1.2) ......................................................................................... 12 
2.3.1.2 Scan resolution (1.4) .......................................................................................... 16 
2.3.2 Printing ..................................................................................................................... 17 
2.3.2.1 Printer and media profile (2.1 and 2.2) .............................................................. 17 
2.3.2.2 Print quality (2.3) ............................................................................................... 18 
2.4
 POST-JOB RECOMMENDATIONS AND TROUBLESHOOTING.................................................. 19 
2.4.1 Post-job recommendations........................................................................................ 19 
2.4.2 Troubleshooting ........................................................................................................ 19 
2.4.2.1 The colors of the copy are very different from the original............................... 20 
2.4.2.2 Grays are wrong in a color copied image .......................................................... 21 
2.4.2.3 The copy is not as shiny as the original ............................................................. 21 
2.4.2.4 There is a big difference between right and left sides of the copy .................... 21 
2.4.2.5 The background results colored when copying newspapers .............................. 21 
2.4.2.6 Vertical bands appear in the copy ...................................................................... 22 
2.4.2.7 A B&W image appears greenish (or pinkish, or bluish).................................... 22 
3. ANNEX ................................................................................................................................. 23 
3.1
 COLOR REPRODUCTION: THEORY OF OPERATION............................................................... 23 
3.1.1 Original ..................................................................................................................... 24 
3.1.2 Large format scanner................................................................................................ 26 
3.1.2.1 Light source ....................................................................................................... 27 
3.1.2.2 Paper movement and glass plate ........................................................................ 27 
3.1.2.3 Cameras.............................................................................................................. 27 
3.1.2.4 Electronics.......................................................................................................... 28 
3.1.3 Touch screen .............................................................................................................29 
3.1.4 Large format printer ................................................................................................. 30 
3.1.5 Final image ...............................................................................................................31 
3.1.6 Overall system...........................................................................................................31 
3.1.6.1 Color management ............................................................................................. 31 
3.1.6.2 Image enhancement ........................................................................................... 32 
3.2
 WHICH COLORS CAN BE REPRODUCED? ............................................................................. 34 
3.3
 GUIDELINES TO CREATE OR VALIDATE A MEDIA PROFILE.................................................. 39 
3.4
 EFFECTS OF CHANGING DEFAULT MEDIA PROFILE SETTINGS (COLOR)................................ 40 
3.4.1 Method ...................................................................................................................... 41 
3.4.2 Lightness ................................................................................................................... 41 
3.4.3 Saturation.................................................................................................................. 41 
3.4.4 Color balance............................................................................................................42 
 
						

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3.4.5 Black enhancement ................................................................................................... 45 
3.4.6 Background cleaning ................................................................................................ 45 
3.4.7 Sharpen ..................................................................................................................... 46 
3.4.8 Blur ........................................................................................................................... 46 
3.5
 EFFECTS OF CHANGING DEFAULT MEDIA PROFILE SETTINGS (B&W) .................................. 47 
3.5.1 Method ...................................................................................................................... 48 
3.5.2 Lightness ................................................................................................................... 48 
3.5.3 Sharpen ..................................................................................................................... 49 
3.5.4 Blur ........................................................................................................................... 49 
4. GLOSSARY.......................................................................................................................... 50 
Notice................................................................................................................................52 
 
						

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1. INTRODUCTION TO THE DOCUMENT 
 
The aim of this document is to provide customers with a simple guide to getting good 
color reproduction when using the HP Large Format Color Copier products. By making 
the process of scanning and printing easier to understand, we believe users will be able 
to achieve the desired color reproduction results. 
 
This document contains two parts: 
 
• The first part provides a set of guidelines, checkpoints, settings and 
troubleshooting cases that will help the owner of an HP Large Format Color 
Copier system with the copying experience. 
 
• The second part (Annex) provides an introduction to color copying concepts, 
especially those related to the systems under discussion. In addition, the Annex 
includes: 
o An assessment of which colors can be reproduced 
o A set of guidelines to assist the user in creating or validating media 
profiles 
o A set of guidelines to the creation of new types of originals 
 
Users who have a good understanding of color copying concepts can use the first part 
of this document as a practical guide to perform a color reproduction job and as an aid 
to problem solving. 
 
Users who require more detailed information regarding color copying concepts or who 
seek assistance for advanced configuration of the system should instead refer to the 
Annex. 
 
This document does not include features that are not color related, such as: rotating, 
scaling, nesting, accounting, paneling, tiling, mirroring and alignment. Nor does it 
provide details about scanner and printer maintenance (please refer to the other guides 
for questions related to these features). 
 
This document is intended for various HP Large Format Color Copier systems; some 
settings may not apply to specific products. 
 
We hope this document will be useful for you and will help you to succeed in your 
business. 
 
Best regards, 
 
HP Designjet printers 
 
						

							Color Reproduction for the HP Large Format Color Copier products family. 5/52 
2. COLOR COPYING GUIDELINES 
 
The HP Large Format Color Copiers allow an original image to be reproduced using a 
scanner, a printer and a controller (called touch screen). The reproduction can be done: 
 
• In one step (a Copy process) 
• In two steps (a Scan process followed by a Print process) with an intermediate 
saving of the digitized data into a file 
 
In this document, we will not differentiate between the two cases: we will describe the 
Scan process and the Print process separately. If you are performing a Copy, please 
follow both processes sequentially. 
 
To reproduce an image accurately, the following steps should be followed: 
 
• Checkpoints before starting a job: you should answer these points before 
starting the job. 
• Touch screen settings decisions: you should take these decisions before 
setting up the touch screen. 
• Running a job: you should configure the touch screen according to the settings 
chosen in the previous step. 
• Post-job recommendations and troubleshooting: some points to 
consider once the job is finished. If the output is not as expected, you can use 
this part as a guide to troubleshooting. 
 
2.1 Checkpoints before starting a job 
 
Before starting a color reproduction job, you should answer the following questions to 
ensure you are in a correct state to proceed. If any of the answers are negative or 
uncertain, please follow the recommended actions. 
 
2 2
. .
1 1
. .
1 1
   
S S
c c
a a
n n
n n
e e
r r
   
 
! Is the glass plate clean and free from dust? If not, or not sure, please 
follow the scanner maintenance manual to clean it. Typically, vertical lines 
appear in the copy if the glass plate is not clean enough. 
 
! Is the white background element of the loading mechanism 
clean? If not, the grays will show a color cast in the copy and the system will 
behave erratically (some copies will be acceptable whilst some others won’t). 
 
 
						

							6/52   Color Reproduction for the HP Large Format Color Copier products family.  ! Has the scanner been on for more than 1 hour? If not, the colors 
may vary during the scan. 
 
! Does the scanner need to run the scanner maintenance process? 
If so, follow the scanner maintenance manual. If unsure, see section 3.1.2.2 of 
the Annex. Typically, the scanner maintenance process should be run every 
100 scans or once a month, but it depends very much on the type of originals 
you are scanning. If you suspect that the scanner may have a problem (colors 
very different from the original, grays not neutral, broken lines), then run the 
scanner maintenance process. 
 
! Has the original dried? If the ink is still fresh, the original may be 
damaged and the glass plate of the scanner may be dirtied. 
 
! Is the height setting in the loading mechanism adapted to the 
thickness of the original? If the original is thicker than 2 mm, follow the 
guidelines for scanning thick media and always remember to handle the 
original with care. 
 
2 2
. .
1 1
. .
2 2
   
P P
r r
i i
n n
t t
e e
r r
   
 
! Is the media properly loaded and with the correct name 
appearing in the front panel? If not, change the media name or reload 
the media, otherwise you risk deteriorated image quality. 
 
! Did you run the printhead alignment and color calibration for the 
media loaded and the current set of pens? If not, execute a printhead 
alignment and color calibration as described in section 3.1.4 of the Annex. 
 
! Is color calibration on? Follow the steps in section 3.1.4 of the Annex. 
 
! Has the printer been inactive for more than 6 hours? If so, take into 
account that the first swaths (ink dropping passes) may show a duller color 
(less ink delivered) than the rest. To avoid this, run a small print test from the 
printer’s front panel. 
 
! Is there enough ink for the job? You should look at the ink level 
indication on the printer front panel. If necessary, replace any empty 
cartridges; there is no need to do a Closed Loop Color or Printhead Alignment 
afterwards. 
 
 
						

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2 2
. .
1 1
. .
3 3
   
T T
o o
u u
c c
h h
   
s s
c c
r r
e e
e e
n n   
 
! Do you have a media profile adapted to the media currently 
loaded into the printer? If not or not known, please create a media profile 
as described in your scanning system’s documentation. If it is not correct, the 
output image may have serious defects: too much ink (dark images, smearing, 
bleeding), too little ink (washed out, low contrast images), wrong colors. 
 
2.2 Touch screen settings decisions 
 
You should now decide what kind of scanning, printing or copying you would like to 
perform. To do so, you will have to select amongst different options provided in the 
touch screen menus. 
 
This section can be used as a reference chart, where you can tick and select options 
that will later be used to configure the touch screen. The terms in bold are the actual 
options’ names that appear in the touch screen menus. 
 
1. Scanning options 
 
1.1 Color mode:
 
Do you want to process the image in black & white or color? (Even if the 
original is a color image the copy could be B&W.) 
Many settings depend on this decision. 
 
! B&W 
! Color 
 
1.2 Type of content:  
What is the content of the original? Select the type of content that best 
matches an entry in the list that follows. This decision will be related to the 
type of original defined in the touch screen (see section 2.3.1.1). The type of 
original is specified between parentheses (), first for B&W scanning mode 
and then in 
italics for color scanning mode. 
 
! Pictorial (Photo; 
Photo) 
! CAD drawing with clean white background (CAD Lines; 
CAD) 
! Text or line art with clean white background (CAD Lines; 
CAD) 
 
! CAD drawing, text or line art with a background that is difficult to 
distinguish from the lines: 
! Blueprint (blue background) (Blueprint; 
CAD with advanced 
 
						

							8/52   Color Reproduction for the HP Large Format Color Copier products family.  settings) 
! Sepia background (Sepia; 
CAD with advanced settings)  
! Other ….. 
! Document: mixed text (or lines) and pictures (CAD Mix; 
Brochure) 
! Map (solid areas and lines) (Map; 
Map) 
 
1.3  Definition of own type of original: 
Do you need some extra color management or image enhancement applied to 
the image? If unsure refer to sections 3.4 and 3.5 of the Annex. Please 
remember that if you change any of the predefined values for the settings 
below, the final image may not be color consistent with the original or its 
image quality could be compromised. The italic items are applicable only 
when scanning in color mode. Default values are 0. 
 
! Lightness (-3 to +6): …….. 
! 
Saturation (-6 to +6): ……. 
! Balance. Choose either RGB  or CMY values (-6 to +6):  
! 
Red: ……….. ! Cyan: .….………    
! 
Green: ……... ! Magenta: ……… 
! 
Blue: ………. ! Yellow: ...……… 
! 
Background Cleaning (0 to 255): …. 
! 
Black Enhancement (0 to 255): …… 
! Blur (Color 0 to 12; B&W On/Off): …….. 
! Sharpen (0 to 6): ……… 
 
1.4 Scan Resolution: 
Which scanning resolution do you need? High (or Best) gives higher 
quality but produces larger files and has slower throughput; Low (or Fast) 
gives higher throughput and smaller files but lower quality. Normal is a 
compromise between the previous two cases. You can also select a custom 
resolution. 
 
! Low (Scan) or Fast (Copy) 
! Normal 
! High (Scan) or Best (Copy) 
! Other: …………. 
 
 
 
						

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2. Printing options 
 
2.1 
What is the currently-installed printer name in the touch screen?  
………………………….. 
2.2 
Which media profile are you going to use? (For information see section 
3.3 in the Annex) 
………………………….. 
2.3 
Which print quality do you need? Best gives higher quality but slower 
throughput; Fast gives higher throughput but lower quality. It is recommended 
to select Fast for drafts, Normal for non-critical tasks and Best for final 
presentations. 
 
! Best 
! Normal 
! Fast 
 
2.4  Do you know which ink technology has been used to produce the original? If 
not known select Non-Inkjet: 
 
! Inkjet 
! Non-Inkjet (Offset, Traditional Photography, Laser Printer, …) 
 
 
 
 
 
						

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2.3 Running a job: operator settings 
 
The third step of the process, after having got through the checkpoints in section 2.1 
and answered the questions in section 2.2, is to configure the touch screen. 
 
Firstly, you should choose the tab corresponding to the action you are about to perform: 
 
• Scan: scan the original and save the digitized image to a file on CD, hard disk, 
flexible disk or networked disk. This file may be printed later. We will call this 
option Scan to File. 
 
• Print: perform a printout from a previously digitized image file. We will call this 
option File to Print. 
 
• Copy: scan the original and print it immediately (no intermediate file created). In 
this case, the settings are a combination of the Scan and Print settings
1. 
 
 
 
 
 
Please be aware that different tabs may have settings in common and most of them 
keep their value when you move from one tab to another. However, all settings under 
the Settings button will change their value when moving between tabs, even if their 
names are the same. Therefore, you should first select the tab according to the action to 
be performed and then select the settings for that tab. 
 
                                       
 1 If you select Copy you should follow the guidelines to Scan followed by the ones to Print. 
Selected 
action 
Toolbar