CT10 — SID, TVI & G7 Gray Balance

Chart: CT10  |  Aim: CRPC6  |  Gray rule: G7  |  SCCA: off  |  Source: CT10-tt-20260913-123307.txt  |  Instrument: PBNCombo CT9web  |  Condition: M0  |  Generated: 2026-09-13 12:49

G7: TR015 NPDC L* + a*b* × (1−tv/100)  |  G7+: CRPC6 curve rescaled to this paper/solid, XYZ-proportional a*b*

CategoryScoreMax%
SID & Color1212100%
Gray Balance1111100%
TVI (Dot Gain) C/M/Y/K7888%
Total303197%

Paper

L*a*b*aim L*a*b*ΔE00
95.96-0.321.4495.00 / 1.00 / -4.005.49

Solid Ink Density (SID) & Color

InkDensityAim DΔDL*a*b*aim L*a*b*ΔE00ScoreSCCA aim L*a*b*SCCA ΔE00SCCA scoreBeer opt. Dopt. kiopt. ΔE00
C1.1051.45-0.34557.37-29.61-45.8456.00 / -37.00 / -50.003.003/356.60 / -38.07 / -45.603.423/31.1691.0602.63
M1.3311.40-0.06947.9971.59-0.8648.00 / 75.00 / -4.001.473/348.53 / 74.76 / -0.970.913/31.3130.9851.43
Y1.0471.000.04791.19-8.9599.3589.00 / -4.00 / 93.002.983/389.91 / -5.27 / 96.082.033/31.0360.9852.98
K1.7291.85-0.12114.84-0.55-0.3516.00 / 0.10 / 0.101.313/316.15 / -0.10 / 0.911.653/31.7030.9850.97
Total12/12 ◀12/12

SCCA rescales the aim against this job's own paper white (measured Lab untouched); ◀ marks the total counting toward the score, currently uncorrected. Beer's Law columns are the best density found in a 30-step sweep, ki 0.820→1.255.

Beer's Law SID — ΔE00 vs Density (30-step sweep, ki 0.820→1.255)

Net ink optical density scaled by ki in 30 steps of 0.015. Each circle is one simulated density. ● Beer's Law optimum (lowest ΔE00); ◆ the actual measurement. Dashed lines mark ΔE 1.5 and 3.5.

Tone Value Increase (Dot Gain) — C/M/Y/K @ 50%

Ink 50% TVaimΔTVISc
C 65.8466.00-0.162
M 67.6666.001.662
Y 63.2866.00-2.721
K 69.7569.000.752

Murray-Davies tone value from Status-T density. Score per cell: 2 if |ΔTVI| < 2, 1 if < 4, else 0. Total 7/8.

TVI (Dot Gain) Curves — C/M/Y/K

Murray-Davies tone value from Status-T density, plotted as gain over nominal. Green is the aim standard's own curve; the coloured line is this job. Both are pinned to zero at 0% and 100%.

pbn Gray Score

Tonemeasured L*a*b*target L*a*b*ΔL*Δa*Δb*ΔCh (a*b*)Ch scoreL scoreΔE00
50%57.58 / -0.86 / 0.5657.50 / -0.16 / 0.720.08-0.70-0.160.727/74/41.03
K5060.39 / -0.72 / 0.65TV 69.69 vs aim 69.00 → Δ0.694/42.71

Gray total 11/11. K50's tone value here is the tristimulus Y ratio used by the gray-balance side; the TVI table above uses Status-T density instead, so the two K50 numbers differ by design.

Gray Balance Prediction

Not available for this chart: its gray tones are single patches, with no C+/M+/Y+ probes around them to regress a Lab→CMY correction from. The ICC route was not available either: need three gray tones, have 1 Measure a CT36 chart for the measured-gradient correction and its .acv curve.

All Measured Patches

#RoleCMYKL*a*b*
1C10010000057.37-29.61-45.84
2Paper000095.96-0.321.44
3M10001000047.9971.59-0.86
4C505000076.91-16.89-23.81
5M500500070.7536.37-5.86
6Y500050094.05-7.5846.96
7gy50504040057.58-0.860.56
8Y10000100091.19-8.9599.35
9K500005060.39-0.720.65
10K10000010014.84-0.55-0.35