THE NUMBERS, EXPLAINED
How to use this calculator.
Serial model with one pass per colour and a flash only between passes. Setup is fully attended; running labour uses your supplied attended fraction. Does not simulate a carousel, parallel operators or final curing time.
Start with your inputs
Enter items, colour passes per item, measured seconds per colour pass, flash seconds between colour passes, setup time (minutes), attended fraction of running time (%). Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Items | 100 |
| Colour passes per item | 3 |
| Measured seconds per colour pass | 5 |
| Flash seconds BETWEEN colour passes | 10 |
| Setup time (minutes) | 30 |
| Attended fraction of running time (%) | 80 |
A worked example
With the example inputs above, running press time (minutes) is 58.333333. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| Running press time (minutes) | 58.333333 |
| Total occupation including setup (minutes) | 88.333333 |
| Attended labour (minutes) | 76.666667 |
How this is calculated
Running press time (minutes)
Items × [colours × pass seconds + (colours−1) × flash seconds] ÷ 60.
Total occupation including setup (minutes)
Setup minutes + running minutes.
Attended labour (minutes)
Setup minutes + running minutes × attended percentage/100.
Symbols and units
- a
- Items
- b
- Colour passes per item
- c
- Measured seconds per colour pass
- d
- Flash seconds BETWEEN colour passes
- e
- Setup time (minutes)
- f
- Attended fraction of running time (%)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions and limits
Serial model with one pass per colour and a flash only between passes. Setup is fully attended; running labour uses your supplied attended fraction. Does not simulate a carousel, parallel operators or final curing time.
Calculations use the values you enter. Blank or invalid inputs show an error instead of silently substituting zero. Results are displayed to useful precision; calculations retain the underlying numeric precision.
Questions about this tool
What does the result tell me?
Running press time (minutes); Total occupation including setup (minutes); Attended labour (minutes). The result applies to the method and inputs described above. Check the units and assumptions before using it in a decision.
Why might another calculator differ?
Differences in units, rounding, timing or model definitions can produce different answers. Compare the input definitions and the method, rather than only the final number. For this tool: Serial model with one pass per colour and a flash only between passes. Setup is fully attended; running labour uses your supplied attended fraction. Does not simulate a carousel, parallel operators or final curing time.
Are my inputs stored or sent to AI?
Calculations on this page happen in your browser. The separate AI question finder sends its submitted conversation to OpenAI; these calculator fields are not sent. Favourites and recent tool names are stored locally. A shared link contains the inputs you choose to include.
Further reading
OpenStax: percentages and proportions ↗
Background reading; this does not imply endorsement or independent review of SumFizz.
Review status
Software example and browser checks are recorded in our quality report. No external expert review is claimed. Created with coding assistance; calculations run as ordinary browser code.
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