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HP Designjet 510 Series Printers - Image appearance options

Image appearance
These topics explain how you can control the overall appearance of your prints:
  • Front panel image options explains how to change the HP-GL/2 color palettes.
  • Printing images in grayscale describes how to print color images in grayscale.
  • Print speeds and print quality lists typical printing times by output quality.
  • Print quality describes the different print modes that are available with your printer.
  • Advanced options describes the various optimization and quality enhancement methods available.
Front panel image options
These topics deal with the ways you can control the overall appearance of your prints from the front panel in terms of:
  • Pen widths and colors in the internal palettes
  • Changing the treatment of overlapping lines (merge)
Some front-panel selections affect the next file you send from your computer, not pages already in the printer’s queue. If this is the case, it is stated in the relevant topic. Some of the controls are available using the front-panel menus (for example) pen width, pen color, overlapping lines). Print mode options are controlled from the front-panel.
Why use the front panel?
By default, the printer looks to your software to provide information on all the above attributes. However, your driver or application may not provide these controls or you may want to experiment with various effects, or try a temporary change, without the need to change your images or your driver settings. Some of these settings do not affect the output generated when printing from most of the applications under Windows when using a HP-GL/2 driver.
Pen widths and colors in the internal palettes
The "pens" discussed throughout these topics are the conceptual pens in a software palette, rather than the printer’s physical printheads. The printer has three pen palettes:
  • Factory
  • Palette A
  • Palette B
The factory palette cannot be changed. You can, however, change the line width and color settings for each pen in the remaining two palettes (palette A and palette B). Initially, all three palettes are identical. Each palette has 16 pens which can include pens of different widths and any combination of the printer’s predefined 256 colors.
To select a palette
To select a palette through the front-panel menu, go to the Define Palette selection under HP-GL/2 Settings and choose the palette you want. The following table describes the palette choices.
Palette
Comments
Software
The printer looks to your software for pen settings and ignores all three internal palettes.
Palette A
The printer assigns the attributes defined in Palette A to the pens defined in your software as 0 through 15.
Palette B
The printer assigns the attributes defined in Palette B to the pens defined in your software as 0 through 15.
Factory
The printer assigns the attributes defined in the Factory Palette to the pens defined in your software as 0 through 15.
Change the palette settings
You cannot change the Factory palette, but you can define Palettes A and B to be whatever you choose. The defaults are Palette, width:
Item
Available options
Defaults
Palettes
Factory, A, B.
Factory
Pens
0 through 15.
Widths (mm)
0.13, 0.18, 0.25, 0.35, 0.50, 0.65, 0.70, 0.80, 0.90, 1.00, 1.40, 2.00, 3.00, 5.00, 8.00, 12.00. Note that 0.13 mm is a one-pixel line width at 300 dpi and three-pixels line width at 600 dpi.
0.13 mm
Colors
0 through 255
As specified on the Palette Print.
How to define Palette A
The following steps explain how to define Palette A.
Instructions
Select (using the keys)
Then press:
1. Select Palette A
Set-up menu
Enter
2.
HP-GL/2
Enter
3.
Define palette
Enter
4.
Palette A
Enter
5. Select pen to change (in this example 3).
Pen 3
Enter
6. The current width assigned to this pen is displayed, for example Width=0.13mm.
Width = 0.13mm
Enter
7. Scroll to the width you want.
0.35mm
Enter > Back
8. Scroll to Color. The current color assigned to the pen is displayed (in this example 4)
Color = 4
Enter
9. Scroll to the color you want.
Color = 110
Enter > Back
10. If both width and color are correct (for Pen 3), press Back four times
Pen 3
Top
Repeat this procedure to define each of the other pens.
  note:
The palette you have just defined will take effect only when you select it to be the current palette, as explained in To select a palette.
Changing the treatment of overlapping lines (merge)
The Merge setting controls the overlapping lines in an image. There are two settings, Off and On. The following illustration shows the effect of each setting.
You can set the merge setting from your software in some applications. Settings in your software override the front-panel settings.
Printing images in grayscale
There are times when you may want to print a color image in grayscale because it is faster. Examples of this are:
  • You want a draft where color is not important, for example to check that the image is not going to be clipped.
  • You want a version for photocopying in black and white.
When you choose the Ink menu Color settings > Grayscale option, the printer renders colors as gray scales. If you want to use only black ink to print in grayscale, you should select the Ink menu Color settings > True black option.
Print speeds and print quality
The following table lists some typical printing times (line drawings @ 20-25ºC and 30-60% relative humidity).
Paper
Color/grayscale
Quality
ANSI-D size
Time (s)
ANSI-E size
Time (s)
Bright White
Color
Best
235
440
Normal
120
225
Draft
45
85
Grayscale
Best
135
250
Normal
80
150
Draft
45
80
Coated Paper
Color
Best
490
980
Normal
120
225
Draft
85
160
Grayscale
Best
325
625
Normal
135
250
Draft
45
80
Heavy Coated Paper
Color
Best
490
980
Normal
120
225
Draft
85
160
Grayscale
Best
435
870
Normal
135
250
Draft
45
80
Glossy Paper
Color
Best
630
1200
Normal
435
830
Draft
325
620
Grayscale
Best
630
1200
Normal
435
830
Draft
325
620
Print quality
You can set the overall print quality from the front panel (Set-Up > Print Quality). In general choose:
  • Fast for maximum productivity. Ideal for checking prints, when print quality is not very important. You can increase print speed further with the Fast quality settings.
  • Normal to get a good combination of print quality and productivity. Ideal for line drawings with good print quality and speed.
  • Best to get high print quality.
You can increase the resolution of the Best setting with the Best quality settings. You can print images in different settings to see which gives the best combination of throughput and quality for your application.
Advanced options
Your printer provides several advanced optimization and quality enhancement features to allow you to obtain the printed results you require.
Improving line quality and graphics details
The Set-up menu Optimize for option allows you to select the correct mode for the type of job you are printing. Two modes are provided: Line drawings/text and Images.
Selecting the Line drawings/text option smooths the fine graduations along the angles and curves of the printed image to refine overall print quality. This enhancement produces:
  • Crisper lines
  • Finer detail
  • Line drawings with a 'sharp' appearance
The Line drawings/text option affects only prints that have color content.
Selecting Line drawings/text (the default setting) ensures you will always get the best quality color prints, except when printing the following files:
  • Mixed lines and scanned color images
  • Mixed lines and color photographs
For these files it is recommended that you select Optimize for > Images.
Best quality settings
If you have selected the Best option as the Print quality setting for your print session but require an even higher resolution for your print job, you will need to change the Best quality setting. The Best print quality option provides 600×600 dpi resolution in normal mode and 2400×1200 dpi in maximum detail mode.
  note:
Using the maximum detail mode will improve resolution but will reduce printing speed and increase memory requirements.
Use the following procedure to select maximum detail mode:
Select (using the keys)
Then press:
1. Set-up menu
Enter
2. Advanced options
Enter
3. Best Quality Settings
Enter
4. Maximum detail
Enter
Fast quality settings
If you have selected the Fast option as the Print quality setting for your print session, you can increase the printing speed further by selecting the increased speed mode. This can be done from the front panel only, because it is not available as an option in the printer driver.
Use the following procedure to select increased speed mode:
Select (using the keys)
Then press:
1. Set-up menu
Enter
2. Advanced options
Enter
3. Fast Quality Settings
Enter
4. Increased speed
Enter

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