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Training details
Objectives
- Understand the importance of quality control.
- Identify the limitations and challenges of the flexographic process.
- Understand customer expectations regarding quality standards.
Content
- Prepress department
- Printing dots
- Screen angles
- The importance of the printing rosette
- Market standards, GMI, GRACoL, SWOP, etc.
- Standards to be met
- Trapping
- Proofing or approval systems
- Densities and dot gains to be respected
- Flexographic halftone printing (process):
- The principle of halftone screening
- Types of halftone screens
- Types of halftone screens
- Characteristics of the halftone screen
- The principle of four-colour process printing (process)
- The printing process:
- The stages of flexographic production
- Other printing processes
- The flexographic market
- The mechanical organization of presses:
- Different press configurations
- Tension zones
- Tension generators
- Drying systems
- Verification systems
- Inking systems:
- Inking system configurations
- Types of anilox
- Technical characteristics of anilox
- Volume verification techniques
- Cleaning techniques
- Flexographic inks:
- The role of ink
- Types of ink
- Water-based inks
- Alcohol-based inks
- UV inks
- Ink composition
- Ink viscosity
- Automatic viscometers
- Use of different types of inks
- The principle of liquid ink transfer
- Surface treatments (corona, flame, and chemical)
- Plate mounting:
- Mounting equipment
- Supplies
- Characteristics of stickybacks
- Flexographic plates:
- Types of plates
- Photopolymer plates
- Manufacturing techniques
- Use and storage
- Perception and Measurement of Colour:
- Light
- Colour perception
- Colour theory
- Colorimetry
- Spectrophotometry
- Computerized solid colour control:
- The principle of solid colour control
- Control system software
- Acceptable tolerances (CMC, CIE 94 and CIE 2000)
- Standards management
- Implementation Strategies in Spectrophotometry
- Process Colour management:
- The principle of colour management
- ICC profiles
- Device gamuts
- RGB-CMYK-Cie Lab Links
- Optimization of printing parameters
- Densitometry:
- The densitometer
- Density
- Dot gain
- Print contrast
- Gray balance
- Ink pickup
- Maximum ink coverage
- Quality control:
- Quality management
- The quality cycle
- Quality issues
- Factors affecting print quality
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