Canon CXDI-55C, Service Manual

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2. Installation
80
4-5) As the step (3)-6), create a graph based on the data measured in step 4), and make sure
that the data from the minimum density to the maximum density nearly form a straight
line.
Characteristics of the printer may prevent the data from forming a straight line near
the minimum and maximum densities. Rotate the image on the QA screen, and reprint
or retake measurements.
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31
Step
Density
Ideal Density Data for Linear Line
Step 1 2 3 4 5 6 7 8 9 10 11
3.2 D 0 0.10 0.21 0.31 0.41 0.52 0.62 0.72 0.83 0.93 1.03
3.1 D 0 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00
12 Bit 0 132 264 396 528 660 792 924 1056 1188 1320
8 Bit 0 8 16 24 32 41 49 57 65 74 82
Step 12 13 14 15 16 17 18 19 20 21 22
3.2 D 1.14 1.24 1.34 1.45 1.55 1.65 1.75 1.86 1.96 2.06 2.17
3.1 D 1.10 1.20 1.30 1.40 1.50 1.60 1.70 1.80 1.90 2.00 2.10
12 Bit 1453 1585 1717 1849 1981 2113 2245 2377 2509 2641 2774
8 Bit 90 98 106 114 122 131 139 147 155 164 172
Step 23 24 25 26 27 28 29 30 31 32
3.2 D 2.27 2.37 2.48 2.58 2.68 2.79 2.89 2.99 3.10 3.20
3.1 D 2.20 2.30 2.40 2.50 2.60 2.70 2.80 2.90 3.00 3.10
12 Bit 2906 3038 3170 3302 3434 3566 3698 3830 3962 4095
8 Bit 180 188 196 205 213 221 229 238 246 255
Max setting
density
Film
base
density