HP Designjet T1100ps A0 User Manual

							Color Reproduction for the HP Large Format Color Copier products family. 11/52 
The settings selected in section 2.2 are herein referred to by their line number 
appearing in parentheses (e.g. (1.1) when setting the Color mode). 
 
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Scanning is the digitization of the original image. It happens either when we are 
Copying or Scanning to File (i.e. Copy or Scan tabs). Special attention should be paid 
to this process where, besides the digitization, most of the image enhancement and part 
of the color management take place. 
  
It is recommended to preview the image after applying the settings by pressing the 
preview button (see figure below). You can see more or less detail of the image by 
selecting the Zoom buttons in the Preview pane. 
 
 
 
 
 
 
 
 
Before scanning, you will have to make three color-related selections from the Copy tab: 
 
• B&W or Color (1.1): defines whether the scanning result will have color 
information or just grayscales. 
 
• Type of original (1.2): is a template for image enhancement and color 
management. Please refer to the following section for more details. 
 
 
Zoom buttons 
Color related 
settings 
Preview button
 
						

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2.3.1.1 Type of original (1.2) 
 
Since there are many settings which are used for image enhancement and color 
management, templates (or groups of settings) are provided through the type of 
original setting in order to ease this task. It consists of the definition of archetypes of 
different originals to which specific settings’ values have been associated. Depending 
on whether you are trying to scan in B&W or Color, you may choose between different 
“type of original” templates: 
 
• Color scanning
 
o Photo 
o Brochure 
o Map 
o CAD 
 
 
             
 
						

							Color Reproduction for the HP Large Format Color Copier products family. 13/52 
• B&W scanning 
o Photo 
o Map 
o CAD Mix 
o CAD Lines 
o Blueprint 
o Sepia 
 
              
 
In most cases, choosing the correct “type of original”, as specified in point 1.2 in 
section 2.2, is enough to obtain a good scan and, subsequently, a good print. 
 
A description of when each type of original should be used is provided in the following 
tables. 
 
 
Color Mode 
Photo 
Should be used when copying color pictorial 
images, characterized by having many colors, 
transitions between colors or shadings. The main 
intention is to have a copy as perceptually similar 
to the original as possible, even though the colors 
are not exactly the same. 
 
  
 
 
						

							14/52   Color Reproduction for the HP Large Format Color Copier products family. 
Brochure 
Should be used when there is a mix of text (sharp 
and crisp contrast) and pictures. It is a 
compromise between having good perceptual 
reproduction of the pictures and crisp text. 
 
 
 
 
 
 
  
Map 
Should be used for maps, graphics and other 
documents that have area fills: areas of one color 
surrounded by areas of another color. The edges 
between adjacent color areas are enhanced 
(sharpened) and, assuming that the background 
is white, a background cleaning feature is 
applied. 
 
CAD 
Should be used for line drawings (architectural, 
mechanical, electrical drawings) or text 
documents. Lines may be thin, and should be 
copied as sharply as possible. The same image 
enhancements as the Map type are applied. 
 
 
  
 
 
						

							Color Reproduction for the HP Large Format Color Copier products family. 15/52 
 
Black and White Mode 
Photo 
Should be used for pictorial images that 
have many shades of gray. In principle, 
this is equivalent to the (Color) Photo 
type. 
 
Map 
Should be used for maps, graphics and 
other documents that have area fills: areas 
of one shade of gray surrounded by areas 
of another shade. The edges between 
adjacent gray areas are enhanced 
(sharpened) and, assuming that the 
background is white, a background 
cleaning feature is applied.  
 
 
CAD Mix 
Should be used for line drawings, text and 
shades of gray. It is similar to the 
Brochure type seen before, but for black 
and white content. 
 
 
 
 
 
  
CAD Lines 
Should be used for line drawings and pure 
black text. It is not suitable for pictures and 
it is the equivalent of the (Color) CAD 
type seen before, but for black and white 
content. 
 
 
						

							16/52   Color Reproduction for the HP Large Format Color Copier products family.  Blueprint 
Should be used when the original has very 
similar bluish background and foreground. 
If you selected Photo for this type of 
original the output would be very noisy 
and it would be hard to distinguish the 
lines. 
This “type of original” setting includes a 
process to clean the background in order 
to make the output clearer.  
Sepia 
This option uses the same principles as 
Blueprint but it is designed for sepia 
color backgrounds. 
 
 
 
 
 
 
At this point, if you don’t like how the original appears on the preview pane, or if you 
have already made a copy and the result is not what you expected, you can try to do 
one of the following: 
 
• Try a different pre-defined type of original. 
• Modify the current type of original. 
• Create your own type of original (same as the above, but saving the new type of 
original under a new name, thus preserving the predefined one). 
 
To create your own new type of original, please refer to sections 3.4 and 3.5 of the 
Annex. 
 
2.3.1.2 Scan resolution (1.4) 
 
You can specify the scanning resolution decided in point 1.4 of section 2.2 in the Scan 
Resolution setting of the Scan tab (or in the Copy Quality setting under the Settings 
button of the Copy tab). 
 
As a rule of thumb, the scanning resolution (for best print mode and large format 
images) should be 150 dpi x (Output Size/Input Size); therefore, if the original is not 
enlarged (Output Size = Input Size), a 150 dpi resolution is sufficient. If the original is 
enlarged four times, a 600 dpi resolution is needed. 
 
 
						

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If the image contains fine details (CAD drawings, fine art, maps), you may consider 
scanning at a higher resolution. 
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Printing is the materialization of the image and can be performed whether you are in 
the Copy or Print tabs of the touch screen. Please remember that, besides the formatting 
required to send the image to the printer, most of the color management takes place in 
this phase. 
 
With regard to color management you should define: 
 
• Which printer will be used (2.1) 
• Which media profile defines the media loaded in the printer (2.2) 
• What print quality is required (2.3) 
• Whether the original image comes from an inkjet printer (2.4) 
 
All these settings can be specified in the touch screen menu. 
 
2.3.2.1 Printer and media profile (2.1 and 2.2) 
 
Printer name and media profile can be specified in the Setup tab, as shown in the 
picture below. 
 
 
 
 
						

							18/52   Color Reproduction for the HP Large Format Color Copier products family.  2.3.2.2 Print quality (2.3) 
 
The Print quality, Ink printer original, Black Ink only, Optimize for 
drawing and Max detail settings are specified under the Settings button in the 
Copy or Print tab.  
 
Note: The list of options depends on the printer installed. Not all settings are available 
in all printer models. 
 
         
   
 
 
 
To get the best possible image quality and in order not to lose any of the reproducible 
colors, you should choose Best print quality together with a good media such as 
Photo Gloss. For all other cases, you should decide whether to favor image quality 
(Best), print speed (Fast) or balance the two (Normal). 
 
The Ink printer original setting should be specified when the original image comes 
from an inkjet printer. If the original is a traditional silver-halide photo, or comes from 
an offset press, a laser printer or some printer other than inkjet, then this option should 
not be set. 
 
 
						

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2.4 Post-job recommendations and Troubleshooting 
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 Handle the copy with care, letting it dry completely. 
It is recommended not to expose it to direct sunlight (or any other source of UV 
rays) or other extreme conditions (humidity, temperature). If appropriate, it is 
recommendable to laminate it in order to avoid scratches and to increase its 
“light-fastness” (durability of colors). 
 
 Clean the glass plate  
If you suspect that the original has left some dust on the glass plate, clean it with 
a soft cotton tissue. 
 
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If the output is not as expected, please check whether your problem is one of those 
listed below, and if so, consult the following sections for a deeper diagnosis and a 
potential solution. Alternatively, please contact the HP Support Organization. 
 
The most common issues in color reproduction are: 
 
1. The colors of the copy are very different from the original: 
a. There is an overall color cast (e.g. bluish, pinkish). 
b. Most of the colors are OK but certain ones are very different. 
2. Grays are wrong in a color copied image. 
3. The copy is not as shiny as the original. 
4. There is a big difference between right and left sides of the copy. 
5. The background comes out colored when copying newspapers. 
6. Vertical bands appear in the copy. 
7. A B&W image appears greenish (or pinkish, or bluish). 
 
 
						

							20/52   Color Reproduction for the HP Large Format Color Copier products family.  2.4.2.1 The colors of the copy are very different from the original 
 
1.a There is an overall color cast
 
 
Note: the Advanced Gray Balance window may not appear with some printers. 
Is the Media properly 
specified in the 
printer front panel?
Is it a new Media type?
Needs a new Media Profile 
to be created?
Have you validated this 
Media recently? 
Print the gray scale in the 
Advanced Gray Balance 
window in the Media Profile 
Creation. Is the ramp 
neutral? 
No
No
No 
2 
Are you viewing the 
copy in the expected 
viewing conditions?  
1 
Reselect the Media 
type in the printer or 
scanner
, and try again.
Create a new 
Media Profile. 
Modify RGB 
values and 
recreate the 
media profile. 
Scan or Copy modifying the RGB settings.
Validate the Media 
Profile. Make sure the 
glass plate is clean. 
Yes
No
Yes
Yes
Yes
5 
4 
3 
Try viewing it with 
the correct light and 
environment. No
Yes