Profiling for Latex (HPL65500)

HP Designjet L65500 Printer series - PDF Overview and Features

General Information

• Native printhead resolution is 1200dpi
• Contone driver - See Profiling for Contone for step-by-step instructions.

Creating new substrate presets

(HP to provide more info)

Ink density level in the substrate preset:

For each generic substrate there are available three different ink density levels:

• 100%
• 150%
• 250%.

It's important to set the right amount of ink for the paper in the first step to minimize the number of adjustments in the following steps. 100% substrates are designed to dry up to 4 drops of ink (12pl per drop) per 600dpi cell, 6 drops for 150% and 10 drops for 250%.

Ink Restrictions

Ink restrictions from the IPS:

Ink restrictions allow you to set the maximum amount of ink for each primary (cyan, magenta, yellow, black, light cyan and light magenta), therefore it also have a direct impact on the total amount of ink. Ink restriction percentages can be set from 50% to 100% (the values don't refer directly to amount of ink but they are expressed in a more perceptual scale), as a visual reference the color calibration chart contains a printed ink restriction ramps in 2% steps which can be useful for selecting the right ink restrictions percentages. 

Once the ink restrictions are set for a given paper color calibration will ensure color consistency by recomputing linearization tables to reach the desired saturation goal for each primary based on the internal spectrophotometer measurements. Take into account that high percentages ink restriction values uses more ink increasing color gamut but leaving less margin for the operation of the color calibration system which may reduce color consistency.

For those papers that are suitable of color calibration (See supported substrate types chart in the HP Designjet L65500 User guide) the default total ink limit for a given substrate (4 drops for 100%, 6 for 150% and 10 for 250%) are achieved with the ink restrictions values at 97% for the black and 89% for the rest of colors. Increasing all values to 100% is equivalent to a 20% increase in the maximum amount of ink.

For those papers that are not suitable of color calibration the total amount of ink was computed with a default value of 100% so there is no way to increase the use of ink for a given ink density preset.

Ink Limits

Total Ink limit from the RIP: If basic workflow is used for a new substrate, the total amount of ink can be limited in Onyx RIP, we should provide a link to the ink limit section of the Onyx documentation.

ICC Build Options

Total Ink limit from the ICC profiling tool: Also most profiling tools allow to control the ink limit. We could also add a link to the profiling section of the Onyx RIP.

Workarounds for Known Issues

How to fix banding problems in some color channels?

(HP to provide more info)