Printing Ink Proofing Machine for Offset Printing
This 1-minute-59-second video introduces the DERUI DR-B233 printing ink proofing machine (also described by the manufacturer as color modulation equipment for offset printing), built by Guangdong Derui Testing Equipment Co., Ltd. As shown in the video, the DR-B233 quickly produces high-quality ink samples so that colors and textures can be previewed before large-scale printing. Ink density, color combinations and printing techniques can be adjusted between proofs, making it a practical tool for designers, printers and anyone who needs precise color matching. Designed and manufactured on the working principle of a printing press, the machine predicts the hue of an ink through standard proofing: the proof is continuously compared with the standard sample, and once the special color is correctly adjusted, the formulation can be used directly for mass production on the printing press.
What This Printing Ink Proofing Machine Video Shows
▸ Fast ink sample preparation. The video shows the machine producing ink proofs quickly, so the printed color and texture can be checked before the production run.
▸ Adjustment between proofs. Ink density, color combinations and printing techniques can be adjusted to compare results and find the right match.
▸ Automatic inking system. Inking is automatic and the ink mixing time is adjustable to suit different inks.
▸ Externally adjustable printing pressure. Printing pressure is adjustable manually from -1 to +1 mm according to the thickness of the material.
▸ Selectable speeds. Inking speed offers three direct presets - 500, 650 and 800 rpm (adjustable range 0-900 rpm); color development speed offers 10, 15 and 20 rpm (adjustable range 0-25 rpm).
▸ two color bars in one proof. Two color bars with a 107 × 210 mm effective area each can be printed on the 225 mm-wide roller for side-by-side comparison.
How the DR-B233 Moves Color Matching to the Pre-Press Stage
Step 1 - Prepare
Prepare the ink or special color to be checked. The machine is designed on the working principle of a printing press.
Step 2 - Proof
Adjust the printing pressure externally (-1 to +1 mm) according to the thickness of the printing material and select the inking and color development speeds.
Step 3 - Compare
Compare the color of the proof with the standard sample to judge whether the formulation is correct.
Step 4 - Adjust
Adjust the formulation and proof again until the color matches the standard sample.
Step 5 - Produce
Once the special color is properly adjusted, the formulation can be used for mass production on the printing press.
The color matching process is therefore completely transferred to the pre-press stage, instead of being carried out by trial and error on the production press.
DR-B233 Specifications
| Parameter | Specification |
|---|---|
| Inking method | Automatic inking; ink mixing time is adjustable |
| Printing accessories | Printing pressure can be precisely adjusted externally according to the thickness of the material |
| Printing pressure | Manually adjustable within the range of -1 to +1 mm |
| Inking speed | Three-speed direct adjustment: 500, 650 and 800 rpm; adjustable range 0-900 rpm according to the characteristics of the ink and paper |
| Color development speed | Three-speed adjustment: 10, 15 and 20 rpm; adjustable range 0-25 rpm |
| Printing roller width | 225 mm; maximum color development area 225 × 210 mm |
| Effective area of color bars | 107 × 210 mm per bar; 2 bars |
| Inverter | Taiwan Delta (DELTA) |
| Net weight | 75 kg |
| Power supply | 220 V, 50 Hz |
| Working environment | Temperature 20 ± 10 °C; humidity below 85% |
Where the DR-B233 Is Used
▸ Packaging and printing production departments - special-color proofing before press runs
▸ Paper manufacturing enterprises
▸ Ink manufacturing enterprises
▸ Research institutions
Why Proof Before Production
▸ Accurately predict the hue of an ink through standard proofing
▸ Determine the correct ink formulation by continuously comparing the proof with the standard sample
▸ Keep the color matching process in the pre-press stage instead of on the production press
▸ Wide range of usable substrates, supported by externally adjustable printing pressure
Standards Referenced
The following standards are referenced in the manufacturer's product information for this equipment:
Information Required to Select the Correct Configuration
▸ Substrate types and thickness range of the materials to be proofed
▸ Ink system (offset ink, special color, etc.) and its characteristics
▸ Required proof size (maximum color development area is 225 × 210 mm) and number of color bars per proof
▸ Local power supply (standard configuration is 220 V / 50 Hz)
▸ Reference color sample or applicable standard used for acceptance
FAQ
Video Summary
In this 1-minute-59-second video, the DR-B233 printing ink proofing machine demonstrates how ink samples are produced quickly for color preview before large-scale printing. The machine combines an automatic inking system with externally adjustable printing pressure, three-speed inking (500/650/800 rpm) and color development (10/15/20 rpm), and prints two 107 × 210 mm color bars on its 225 mm printing roller. It is used by packaging and printing producers, paper and ink manufacturers and research institutions to confirm special colors before the production run.
Need a Printing Ink Proofing Machine Proposal?
Contact Guangdong Derui Testing Equipment Co., Ltd. with your substrate type, ink system, proof size and applicable standard - we will recommend the right configuration and quotation.
