Ads Professional offset and digital printing machines from Kocioł

Modern Printing - High-Quality Used Printing Machines

We specialize in supplying used printing machines from world leaders: Heidelberg Speedmaster, KBA Rapida, Komori Lithrone, HP Indigo, Xerox Versant. The portfolio includes 2-10 color offset presses, digital machines, CtP systems, and finishing devices. Each machine undergoes a 180-point inspection covering print quality testing, densitometric calibration, color matching verification, and control systems diagnostics. Savings on purchase range from 45-70% while maintaining print quality in accordance with ISO 12647.

Critical Parameters Checked Before Sale

We conduct print tests with densitometry measurement (ΔE<3), verification of registration ±0.05mm, control of dot gain (compliance with ISO curves), testing of dampening and inking uniformity, cylinder runout measurement <0.01mm, diagnostics of automation systems (CIP3/4, PressSense), and analysis of blanket and cylinder wear.

Key Machines in the Portfolio:

Sheet-fed Offset Presses: Heidelberg SM52-102, CD/XL series, KBA Rapida 75-106. Formats A3-B1, speeds up to 18000 sheets/h, inline coating, UV/IR drying.

Digital Printing: HP Indigo 5600-12000, Xerox Versant 180-3100. Offset quality, personalization, white and metallic toners.

CtP Systems: Heidelberg Suprasetter, Screen PlateRite, Agfa Avalon. Resolutions 2400-4800 dpi, thermal and violet.

Finishing: Folding machines Stahl/MBO, ZSRM Horizon, UV coaters, binding Muller Martini.

Advanced FAQ - Diagnostics and Print Optimization

How to Conduct Comprehensive Diagnostics of Heidelberg SM 102-4 Offset with Print Quality Assessment?

Mechanical diagnostics of the machine: Cylinders: radial runout <0.01mm for plate/rubber, <0.015mm for impression. Surface condition: chrome without scratches, Ra<0.4μm, measured with a profilometer. Impression: test with 0.05mm film - uniform impression ±0.02mm width. Bearings: play <0.005mm, temperature <45°C after 1h @ 12000 sheets/h. Synchronization: gear play <0.02mm, no pitting on teeth. Ink units (4 towers): Ink rollers: hardness 25-30 Shore A, runout <0.02mm, no glazing. Ink distribution: stripe test 3-4mm uniformly across the width. Ink profiles: 30 zones, motorized settings ±0.05mm accuracy. Temperature: 27±1°C stabilized, thermostats operational. Washing: automatic, cycle time <5min, consumption 50ml/cycle. Alcolor dampening units: Dampening rollers: hydrophilic Ø45mm, knurled chrome. pH of the solution: 4.8-5.3, conductivity 800-1200 μS/cm stable. Alcohol/substitute: 8-12% IPA or substitute, cooling 10±2°C. Circulation: 15-20 l/min, filtration 25μm, tank 40L. Dampening balance: 15-20% on the control panel. Sheet feeding system: Suction head: vacuum -0.4 to -0.6 bar, 8 functional suction cups. Separation: 3-stage blowers, air knife 45°. Transport: belts evenly tensioned, guides ±0.1mm. Markers: front/side ±0.05mm repeatability @ 10000 sheets/h. Delivery: suction braking, stack evenness ±2mm/500 sheets. ISO 12647-2 Print Test: Material: coated paper 150g/m², format 72×102cm. Densities of full print: C=1.45, M=1.40, Y=1.30, K=1.85 ±0.05D. Dot gain 40/80: 13/8% ±3% for CMY, 17/10% for K. Gray balance: C50/M40/Y40 = Lab 54/0/-1 ±2 units. Registration: ±0.05mm between colors, stability 1000 sheets. Uniformity: ΔE<2 between left/center/right side. Ugra/Fogra test: all fields within tolerance, PSO certificate. Control system CP2000: Presets: 50+ saved jobs, quick recall. CIP3/4: data import, automatic ink zones ±5%. Inline densitometry: if equipped, calibration ΔE<1. Alcohol-o-mat: automatic dosing ±0.5%. Powder spray: quantity adjustment 5-30g/1000 sheets. Counters: production, waste, operating time available. Pneumatics and electronics diagnostics: Compressor: 6-7 bar stable, dew point <3°C. Encoders: absolute, resolution 0.01mm, calibration OK. Sensors: sheet, doubling, all responsive. Drives: AC servo, synchronization <0.5°, no alarms. Performance and economy: Maximum speed: 13000 sheets/h mechanically stable. Net production: 8000-10000 sheets/h depending on the job. Startup waste: 150-200 sheets 4-color on average. Format change: 15-20min B2↔B1, 30min with washing. Energy consumption: 25-30 kW on average during printing. Operating costs: Blankets: 800-1000 EUR/set, replacement every 1-2M impressions. Inks: 2-4 EUR/kg, consumption 0.8-1.5g/m² per color. Chemistry: alcohol 3 EUR/L, additives 150 EUR/month. Plates: 8-15 EUR/piece depending on the supplier. Maintenance: 2000 EUR/year for parts, 3000 EUR/year for service.

How to Optimize Digital Printing on HP Indigo 7900 for Offset Quality?

Basic system calibration: Densities DMax: C=1.55, M=1.50, Y=1.10, K=1.90 ±0.03 (Status E). Blanket temperature: PIP 120°C, BID 90°C ±2°C stable. Impression: PIP 400N, BID 1200N ±5%, uniform across the width. Charging: Charge roller -900V ±20V, critical cleanliness. Laser: intensity 80-85% for resolution 812×1625 dpi. ElectroInk: viscosity 2000-2500 cP @ 40°C, pigment concentration OK. ICC Profiling: Test chart: IT8.7/4 minimum 1617 measurement fields. Measurement: X-Rite spectrophotometer, conditions M1 (D50, 2°, UV). Linearization: individual CMYK curves, 21 points. Software: EFI Fiery or HP SmartStream, DeviceLink profiles. Verification: Fogra 51 compliance, average ΔE<2, max ΔE<5. One-Shot vs Multi-Shot: One-Shot: faster, 500 A3/h, slightly smaller gamut. Multi-Shot: wider gamut, better smoothness, 350 A3/h. Selection by application: commercial One-Shot, premium Multi-Shot. Special applications: White: coverage >85% on black, 2-3 layers. Primer: improves adhesion on offset stocks, 3-5g/m². Metallic: Silver/Gold, density 0.8-1.0, gloss >60 GU. Fluorescent: Pink/Orange/Green, brightness +30%. Invisible Yellow: security, UV reactive. Problems and solutions: Banding: clean charge roller, check laser alignment. Mottle: adjust temperature, check ElectroInk. Offsetting: reduce BID temperature, increase drying. Misregistration: calibrate media width, tension adjustment. Scratching: check squeegee, clean developer unit. Quality control: Ugra/Fogra wedge: measurement every 500 sheets, trend ΔE. Density: inline densitometer, auto-adjustment ±0.05D. Registration: <0.2mm front-to-back in duplex. Consistency: morning/evening samples ΔE<1.5. Production efficiency: Format B3: 4600 sheets/h simplex color. Format A3: 3450 sheets/h simplex, 1725 duplex. Personalization: 2000-3000 unique A4/h. Utilization: >85% with proper planning. Operating costs: Click charge: 0.03-0.05 EUR/A4 depending on coverage. ElectroInk: 60-80 EUR/kg, consumption 4-6% coverage. Blanket: 500k impressions, 2000 EUR replacement. Energy: 15 kW average consumption, 0.10 EUR/kWh. Maintenance: Daily: clean charge roller, check quality. Weekly: color calibration, clean developer. Monthly: replace filters, check squeegee. 250k impressions: main service, replace consumable parts.