Test Chart
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Test chart is basic print used to calibrate and evaluate the quality of output devices such as copier, scanner, and printer. MIC has kept the world’s largest market share in the test chart field. Test chart requires technology for reproducing density, hue, and micron lines with a high degree of accuracy.
| ■Printing density |
|---|
| D<0.3: Allowable width ±0.02 0.3<D<0.6: Allowable width ±0.03 0.6<D<1.0: Allowable width ±0.04 1.0<D: Allowable width ±0.05 |
| ■Resolution |
| 5.6 lines/mm (approx.89 microns) or less: Line width±5% 5.6 lines/mm (approx.89 microns)to 9 lines/mm (approx. 56 microns): Line width±10% 9 lines/mm (approx.56 microns) or more: Line width±20% |
- Reflection Densitometer
- Measuring reflection density of printed materials
- Spectrophotometer
- Defining colors in numerical terms by displaying hue in Lab mode
- Digital Microscope
- Magnifying up to 800X
- Micro Densitometer
- Measuring width and density of small lines
- Two-dimensional Measuring Device
- Measuring dimensions
- X-PAL
- Stage A3 automatic volume measuring device used with a spectrophotometer and a densitometer.
- ccDOT
- Measuring halftone dot area on CTP
ISO15775
The chart has been developed according to ISO/IEC 15775 and JIS X 6933: method of specifying image reproduction of color copying machines by test charts.
It was released onto the market in June 2003 by The Japan Business Machine and Information System Industries Association (JBMIA).
A set includes three test charts: CMYK/RGB/Monochrome, CD-ROM (digital data), instruction manual, and measuring data.
The main test charts were printed by Komori’s lithograph printing press under close control. (Japan Color Standard)
Ogino Masahiko from MIC participated in the process of establishing JIS, as an observer of JTC1/SC28 domestic committee WG3, and as a member of the JIS drafting committee.
Standard Test Chart
This is a standard chart for each manufacturer, which is used to adjust a copier, scanner, and printer set up in a factory.
The recent trend of installing complex digital systems has required a more precise chart.
For a monochrome chart, a higher density range is necessary when replacing an analog machine with a digital one.
The resolution has also increased from 400DPI to 600DPI, and 1200DPI.
For a color chart, it is recommended to make a chart based on the Japan Color Standard to ensure compliance with printed materials.
MIC will continue to pursue higher technologies to ensure high accuracy and quality of charts.
Chart for Service Personnel
This is a chart for maintenance services by a copier manufacturer. Service personnel bring it with them as needed.
A large number of charts are necessary, so the cost is an important factor as well as quality.
MIC provides A3 perforated charts that can be folded to A4 size.
Chart for Speciflic Purpose
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Limited Sample
MIC has also printed limited samples and failure samples. These were traditionally made by collecting and arranging failure outputs, however, it is difficult to make samples as intended, and impossible to mass-produce the same samples.
MIC has been working to solve these problems using its expertise; consequently, FM Screening and PhotoShop image correction techniques have provided solutions.
MIC has made more than 100 samples including film stain, banding, coarse, ghost, rough edges, jaggies, and moire patterns.
The limited samples and the failure samples are critical test tools for subjective image evaluations.
Color and Tone Correction Sample
This tool supports users to maintain maintenance-free machines. Users can use the chart to check the outputs of built-in patterns.
Printing color patches with several color scales for correction, users adjust colors and tones visually.
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