Print job cost estimate method and system
View Patent ↗Automatically determining the cost of a printed job on a digital printing press before the job is run. A job control component in the digital front end of the printing press collects and stores the processing information from the job processing components from prior runs. A job-reporting component displays the stored and estimated processing information and automatically computes and displays the estimated cost of the job. The method includes determining a future toner cost using a toner cost, a future press usage cost, and a substrate cost based on historical toner consumption and then rasterizing the job to determine the total job cost.
1. A system for automatically determining the cost to complete a job comprising:
a.) a computer processor that determines a future toner usage cost coefficient (TCC) based on historical toner consumption comprising:
i) determining a volume-weighted toner cost constant per job mass value (gimK) determined by dividing a total actual toner weight used over a desired time period by a total calculated toner mass usage value (jtcTotal) using historical toner consumption stored values;
ii) determining the toner cost coefficient (TCC) by multiplying the volume-weighted toner cost constant per job mass value (gimK) by a historical toner cost per weight stored value from historical stored values; and
iii) determining the future toner cost for the job by multiplying the TCC by a toner mass consumption (JTU) value such that total toner cost=[JTU*TCC];
b.) storage adapted to store said TCC so that the stored TCC can be used to determine a future press usage cost based on historical stored values of TCC; and
c.) at least one display on which the toner consumption and a total estimated future cost can be presented.
2. The system of claim 1 , wherein said computer processor is capable of processing a processor sequence including at least one repetition of at least one of said steps in determining a future toner usage cost coefficient (TCC).
3. The system of claim 2 , further comprising:
determining said total estimated future cost using a substrate cost based on a future count for a print job and historical substrate costs.
4. The system of claim 3 further determining a total job cost by adding the future toner cost to the estimated substrate cost.
5. The system of claim 4 , further comprising determining the toner cost further comprising using a ratio of press dpi to reduced dpi to adjust surface toner consumption when determining the job.
6. The system of claim 1 , wherein said processor determining said total estimated future cost further comprises using one or more of a press wear coefficient (PWC) and historical operator replaceable component (ORC) stored values.
7. The system of claim 6 further determining total job cost by adding the future toner cost to one or more of a press cost determined using the PWC and ORC stored values.
8. The system of claim 1 , said computer processor further comprising total job cost by adding the future toner cost to one or more of a press cost determined using the PWC and ORC stored values.
9. The system of claim 1 further comprising calculating the (JTU*TCC) value for each channel and summing up the (JTU*TCC) values for all the channels.
10. The system of claim 1 , further determining the JTU using a surface toner consumption calculated by rasterizing the job using a reduced dpi that is lower then a press dpi.
11. The system of claim 1 , further comprising determining the toner cost further comprising determining the total toner cost by summing individual color channel toner costs for CMYK As follows:
Cost Cyan =JTU Cyan *TCC Cyan
Cost Magenta =JTU Magenta *TCC Magenta
Cost Yellow =JTU Yellow *TCC Yellow
Cost Black =JTU Black *TCC Black
Toner Cost=Cost Black +Cost Cyan +Cost Magenta +Cost Yellow .
12. The system of claim 1 , further comprising the total toner cost by summing the individual toner costs (TCC*JTU) further comprising summing a toner mass consumed values for all surfaces.
13. The system of claim 1 , further comprising determining the press usage cost further comprising calculating a total press wear cost by determining a media independent historical press wear value using historical press wear machine-specific stored values from a set historical time period (t 2 -t 1 ) and summing these up for the time period.
14. The system of claim 13 , further comprising determining the press usage cost further comprising using different sets of automatically generated press cost coefficients from multiple printers.
15. The system of claim 1 , further comprising determining the toner cost using a toner cost coefficient based on historical toner consumption further comprising generating an empirical relationship between post-screen toner density data and toner mass consumption.
16. The system of claim 15 , further comprising generating an empirical non-linear relationship between post-screen toner density data and toner mass consumption.
17. The system of claim 15 , further comprising using the empirically derived relationship for converting toner pixel density to toner mass.
18. The system of claim 17 , further comprising using the empirically derived relationship to calculate relative toner consumption from the actual toner mass empirical data.
19. The system of claim 17 , further comprising using the toner replacement information to map the calculated toner mass to actual toner consumption.