Mitsubishi Diamond 8 Web Presses

Mitsubishi Updated: 2007-09-12
Mitsubishi Diamond 8 Web Presses

The Diamond 8 press is ideal for first-time web press buyers or existing narrow-web users looking to expand their printing capabilities. Efficient for both short runs and medium runs, the Diamond 8 produces an array of products, including eight-page signatures in long-grain format (12-page optional). The dot reproduction rivals that of sheetfed presses, affording quality-conscious lithographers an alternative to perfected sheetfed operation. Because of its reliable quality and productivity, the Diamond 8 is especially competitive in the 10,000 to 20,000 quantity range. The press features normal screen values of 200-line screens and can accommodate up to 400-line screens. The Diamond 8 can be equipped with a combination folder with four-page module or four-page signature sheeter for extremely accurate operation at high speeds.

Automatic Constant Tension Infeed

* Accuracy +/-2.2 lbs. at Constant Press Speed
* Range: 175 lbs. (80kg) Maximum
* Tension and Speed Readouts
* Variable Speed Controlled by AC Servo-Motor
* Variable Speed Driven Roller

Auxiliary Equipment

* Automatic Blanket Cleaners
* Automatic Ink Levelers
* Automatic Splicers and Roll Delivery Systems
* Fountain Solution Control Systems
* Main Press Drive Motors and Drive Packages
* Sheeters and In-Line Finishing Equipment
* Stacking, Conveying and Palletizing Systems
* Web Drying Systems
* Web Guides, Cutoff Controls, Web Break Detectors, Automatic Register Systems and Silicone Applicators

Chill Roll Stand

* Double Walled Cylinder Construction
* Four (4) 16" (400 mm) Diameter Chrome Plated Rolls Per Web
* Rubber Covered Nip Roller Pneumatically Operated
* Variable Speed Controlled by AC Servo-Motor
* Web Tension Sensing Device with Digital Display

Printing Unit

* AC Servo-Motor Driven Fountain Roller with Kick-Back and Press Speed Following
* Bearer Width is 1.57" (40 mm) Nickel-Chromium-Molybdenum Alloy Steel
* Blanket-to-Blanket Arrangement with Horizontal Web Travel
* Carbon fiber, Low Inertia Ink Ductor
* Cast Side Frames of Rigid Box-Type Construction on Gear Side
* Contact/No Contact Feature Between Dampener Form Roller and Ink Vibrator by Remote Control at Press Console
* Cylinder Gears are Chromium-Molybdenum Alloy Steel, Induction Hardened, Rockwell 52-59C
* Diamatic "F" Type Three (3) Roll Continuous Dampener, Integrated to Inker, with Motor Driven Pan/Transfer Rolls that Follow Press Speed
* Drive Gears Lubricated by Circulating Oil Cascade
* High Precision Pre-Loaded Double Row Tapered Bearings for Plate and Blanket Cylinders
* Independent Inker Drive with Automatic Ink Wash-Up System for Faster Makereadies (Optional)
* Ink Charge Ratio is 70:15:15
* Inker Clutch for Silencing Upper or Lower Inkers
* Inker Gears are Precision Ground, Minimum Hardness Rockwell 20-30C
* Makeready Clutch Between Fourth and Fifth Units (Optional)
* Mechanical Design Speed of 1,650 FPM (503 m/min)
* Operational Design Speed of 1,500 FPM (457 m/min) 47,000 iph (depending on materials)
* Provisions for Entry Side Mounted Blanket Washers
* Quick Clamp Plate Lock-Up Mechanism
* Remote Register Control from Press Console
* Segmented Ink Fountain/Swing-Away Design with 0.9 gal (3.5 liters) Capacity
* Solid Steel Blanket Cylinders with Chrome Plated Surface
* Solid Steel Plate Cylinders with Chrome Plated Surface
* Three (3) Ink Form Rollers Follow Plate Cocking
* Three (3) Nylon Covered Ink Vibrator Rollers with Fixed Oscillating Stroke at 1.18" (30 mm), Two (2) are Water Cooled
* Unit Driving Clutch for Silencing Individual Units