Thursday, June 11, 2026

Chapter 6 - Imaging

Imaging Technologies  

- Inkjet Printing  

  - Uses fine nozzles to spray ink directly onto paper.  
  - High resolution, suitable for short runs and photo printing.  

- Electrophotography (Laser Printing)  

  - Uses electrostatic charges to transfer toner onto paper.  
  - Fast, efficient, widely used for office and commercial printing.  

Paper & Substrates  

- Paper Basics → weight, texture, and finish affect print quality.  
- Substrates → materials beyond paper (plastic, fabric, metal foils).  
- Choice of substrate impacts durability, colour absorption, and final appearance.  

Page Description Languages (PDL)  

- PostScript → early standard for describing text and graphics.  
- PDF (Portable Document Format) → universal format ensuring layout consistency across devices.  
- PDLs translate design files into instructions printers can understand.  

Variable Data Printing (VDP)  

- Allows customisation of each printed piece.  
- Common in direct mail campaigns (e.g., personalised names, addresses).  
- Increases engagement by tailoring content to individual recipients.  

Key Takeaway:  

Imaging bridges design and physical output. By understanding printing technologies, substrates, and languages like PDF/PostScript, designers ensure accurate reproduction. VDP adds personalization, making print more dynamic and effective.  

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