CT10 — SID, TVI & G7 Gray Balance

Chart: CT10  |  Aim: CRPC6  |  Gray rule: G7  |  SCCA: off  |  Source: CT10-kk-20260913-125312.txt  |  Instrument: PBNCombo CT9web  |  Condition: M0  |  Generated: 2026-09-13 12:53

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
95.96-0.391.8195.00 / 1.00 / -4.005.87

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
C1.1451.45-0.30556.83-30.27-46.8456.00 / -37.00 / -50.002.573/356.60 / -38.11 / -45.283.283/31.1781.0302.42
M1.2971.40-0.10348.4270.74-1.0848.00 / 75.00 / -4.001.573/348.53 / 74.70 / -0.770.943/31.2971.0001.57
Y1.0641.000.06491.08-8.97100.3689.00 / -4.00 / 93.003.013/389.91 / -5.34 / 96.232.013/31.0530.9853.00
K1.7321.85-0.11814.73-0.32-0.2016.00 / 0.10 / 0.101.093/316.15 / -0.11 / 0.961.513/31.6820.9700.72
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 64.3066.00-1.702
M 67.5866.001.582
Y 62.3066.00-3.701
K 69.7869.000.782

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%57.24 / -0.62 / 1.1757.50 / -0.20 / 0.91-0.26-0.420.260.507/74/40.70
K5060.36 / -0.69 / 0.52TV 69.71 vs aim 69.00 → Δ0.714/42.68

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*
1C10010000056.83-30.27-46.84
2Paper000095.96-0.391.81
3M10001000048.4270.74-1.08
4C505000077.44-16.86-23.13
5M500500070.9436.03-5.87
6Y500050094.24-7.5046.81
7gy50504040057.24-0.621.17
8Y10000100091.08-8.97100.36
9K500005060.36-0.690.52
10K10000010014.73-0.32-0.20