Konica Minolta



Bench-top Spectrophotometer CM-3630

A vertically aligned Spectrophotometer in compliance with ISO standards used in the pulp and paper industry including ISO 2469 and ISO 2470. The instrument features a numerical UV-Control system which simplifies the process of calibration and measurement of color, whiteness and yellowness.


Principal Specifications CM-3630

Illumination/viewing system

Reflectance: d:0° (diffused illumination, 0-degree viewing) Conforms to ISO 2469, JIS P8148, DIN 53145-1 and DIN 53145-2 standards.

Light-receiving element

Silicon photodiode array (dual 40 elements)

Spectral separation device

Diffraction grating

Wavelength range

360 nm to 740 nm

Wavelength pitch

10 nm

Reflectance range

0 to 200%; resolution: 0.01%

Light source

Pulsed xenon lamps (× 3)

Measurement time

Approx. 1.5 seconds (for measurements of fluorescent colors, at 9600 bps)

Minimum interval between measurements

Approx. 4 seconds; when reflectance measured, approx. 5 seconds; when fluorescent color

Measurement/illumination area

Ø 30 mm / Ø 34 mm

Inter instrument agreement

Mean ΔE*ab 0.2 based on 12 BCRA Series II color tiles compared to values measured with master body


Spectral reflectance: Standard deviation within 0.1% Colorimetric values: Standard deviation within ΔE*ab 0.02 (condition; white calibration plate measured 30 times at 10-second intervals)

Temperature drift

Spectral reflectance: Within +/- 0.10%/°C Color difference: Within ΔE*ab 0.05/°C

UV adjustment

Instantaneous numerical adjustment

UV cut filter

400 nm cutoff and 420 nm cutoff

Control method

Directly connected to a computer


RS-232C format


100-240V AC 50-60Hz 25W AC (with a dedicated AC adapter)

Dimensions (W × H × D)

300 × 585 × 315 mm


15.5 kg

Operating temperature/humidity range

13 - 33°C, relative humidity 80% or less (at 30°C) with no condensation

Standard accessories

White calibration plate CM-A 133, Zero calibration box CM-A119, AC adapter AC-A12, RS-232C cable IF-A12, Accessory Case CM-A117, Dust Cover CM-A118, Unit Driver CM-A108

For paper application it is recommended to perform the calibration of the instrument with reference standards ISO level 3 (IR3) supplied by Innventia, Sweden.

Specifications subject to change without prior notice.