How does Bradford & Bigelow ensure color consistency across print runs?

Color consistency across print runs especially on reprints and long-term programs, requires more than skilled press operators. It requires calibrated equipment, standardized measurement, and documented processes. Bradford & Bigelow combines G7 Master calibration, closed-loop press control, and ISO 9001-driven process discipline to maintain consistent color from the first run through every reprint.

G7 calibration as the baseline
Bradford & Bigelow's presses are calibrated to the G7 methodology, which establishes a consistent target for neutral gray balance and tonal reproduction. Once the press is calibrated to G7 targets, density is used to maintain that state throughout production, giving every run a measurable, documented starting point.

Measurement tools on press
Press operators use spectrophotometers and densitometers to measure color throughout each run. Spectrophotometers measure actual color values and calculate Delta E, the numeric measure of color variation from target. Densitometers measure ink density on the sheet. Together they provide objective, numeric data rather than relying on visual judgment alone.

Operators pull sheets at regular intervals, measure control bars, and make adjustments to keep color within tolerance throughout the run.

Closed-loop color control
Bradford & Bigelow's Manroland presses use closed-loop color control systems that scan printed sheets and send data directly to the press console. The press adjusts ink zones automatically to bring color back to target creating faster makeready, less waste, and more stable color through long runs and across reprints.

What this means for your project
For publishers with multi-edition programs, brand-sensitive covers, or titles that reprint regularly, B&B's combination of G7 calibration, measurement tools, and closed-loop automation means color drift between runs is minimized. When you reprint a title, the color should match the previous run not approximate it.

For a detailed look at how color consistency is maintained from proof to press, read our blog post: How Do Printers Maintain Color Consistency from Proof to Press Run?