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Estimation of Ink consumption used for printing process;
Estimation of Ink consumption used for printing process;
SPANKS formula is used commonly to calculate ink consumption, as they form by first letters of Stock, Process, Area, Number of page side, Kind of image and Specific Gravity (Density of ink). Numbers are assigned to each part and the product of SPANKS is divided by a constant 353 as said below;
(S*P*A*N*K*S) / 353 = Ink required in Kg for a specific job. This is rough calculation to find the consumption for cost and estimation purpose.
For more details about SPANKS download pdf
We have tried following calculator to work with above SPANKS formula ;-
We have tried following calculator to work with above SPANKS formula ;-
[ Note: If you need ink consumption based on image coverage Click here ]
Example : Using table below, we can calculate ink used for printing - Newspaper 40,000 copies of 16 page with 4 - colour coldset-ink .
Let us collect information as follow with help of tabulation ;-
Stock - 1.8 Newsprint NP ; Process - 0.3 Web offset flush ink ; Area - 0.190008 Sq.m; 16 pages * total copies 40,000 No. of pages = 640000; Kind of image - 0.15 NP 4color process; Sg density - 1.2 NP Black
( S * P * A * N * K * S ) / 353
(1.8 * 0.3 * 0.190008* 640000 * 0.15 * 1.2 ) / 353 = 11820/ 353 = 33.48 Kg
Rate/Kg = INR 150 * 33.48 kg = INR 5022.00
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