Operating Manual

10
Using ink leftovers
10.1 General
Various methods can be applied to use ink leftovers:
1. An ink leftover of unknown composition is available. The leftover is applied in a concentration
of 100% (i.e. 100% ink leftover and 0% transparent white) and measured ( see Section 10.2
«Formulating a target color with ink leftovers» or Chapter 15 «Processing and creating
leftovers»). It is assumed that the leftover is printed on the same substrate as for the formulation.
For recipes with a high proportion of the particular ink leftover, this procedure is accurate
enough.
2. The ink leftover is stored in the database in the form of a recipe. During formulation,
this is loaded and converted into a «colorant» ( see Section 10.2 «Formulating a target color
with ink leftovers» or Chapter 15 «Processing and creating leftovers»). This method is more
accurate because the color components of the ink leftovers are known.
3. The ink leftover is measured by a colorant calibration and integrated into an existing assortment
( see Section 14.4.3 «Defining an assortment»). Afterwards, the formulation proceeds
as with a normal colorant ( see Section 5.2 «Formulating a target color»). This method
is the most expensive but it produces the most accurate recipes.
If you proceed in accordance with method 1 or 2, the leftovers will be taken into the current
assortment during formulation and will be marked with a $ - sign.
In Method 3, the ink leftover is taken into the assortment like a normal colorant. In addition, you
activate the check box Is leftover in the Set up Colorant window so that the colorant is marked
as a leftover ( see Section 14.4.3 «Defining an assortment»).
In any event, you must ensure that the ink leftovers are deleted from the assortments once they
have been used up. You can delete ink leftovers either during formulation with ink leftovers in the
Colorant Selection window ( see Section 10.2 «Formulating a target color with ink leftovers»)
or in the leftovers database ( see Section 15.3 «Measuring a new leftover»). Note also Section
10.4 «Reducing leftovers».
10 • Using ink leftovers 75