CT10 — SID, TVI & G7 Gray Balance

Chart: CT10  |  Aim: CRPC6  |  Gray rule: G7  |  SCCA: off  |  Source: CT10-tr-20260913-123440.txt  |  Instrument: PBNCombo CT9web  |  Condition: M0  |  Generated: 2026-09-13 12:48

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/K6875%
Total293194%

Paper

L*a*b*aim L*a*b*ΔE00
95.51-0.241.7195.00 / 1.00 / -4.005.67

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
C1.1101.45-0.34057.22-29.67-45.8756.00 / -37.00 / -50.002.923/356.32 / -37.86 / -45.163.413/31.1741.0602.64
M1.3161.40-0.08448.3171.47-0.8148.00 / 75.00 / -4.001.533/348.28 / 74.48 / -0.820.703/31.3161.0001.53
Y1.0491.000.04991.41-8.9699.9189.00 / -4.00 / 93.003.073/389.48 / -5.18 / 95.772.293/31.0491.0003.07
K1.7321.85-0.11814.73-0.57-0.2016.00 / 0.10 / 0.101.333/316.08 / -0.08 / 0.941.603/31.7070.9851.00
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 64.8766.00-1.132
M 67.2566.001.252
Y 60.9166.00-5.090
K 69.2069.000.202

Murray-Davies tone value from Status-T density. Score per cell: 2 if |ΔTVI| < 2, 1 if < 4, else 0. Total 6/8.

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%57.65 / -0.68 / 0.7657.50 / -0.12 / 0.850.15-0.56-0.090.577/74/40.84
K5060.52 / -0.66 / 0.56TV 69.13 vs aim 69.00 → Δ0.134/42.82

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*
1C10010000057.22-29.67-45.87
2Paper000095.51-0.241.71
3M10001000048.3171.47-0.81
4C505000077.28-17.10-23.60
5M500500070.8236.38-5.83
6Y500050094.49-7.4546.05
7gy50504040057.65-0.680.76
8Y10000100091.41-8.9699.91
9K500005060.52-0.660.56
10K10000010014.73-0.57-0.20