Resources

DPI (dots per inch):
Resolution (dot/spot size on an imaging device).

• The higher the resolution, the smaller the dot size.
• The smaller the dot size, the sharper the image.
• Small dots (high resolutions) are required for high line screens.
• Common laser printer resolutions are 300, 400, or 600 dpi.
• Resolutions of 2400 dpi or higher are required for print.
• DPI is often used interchangeably with PPI (pixels per inch) to describe computer monitor screen resolution or scan resolution.

• Standard line screens are 65, 85, 100, 120, 133, 150, 175 & 200 lpi.
• Small dots (high resolutions) are required for high line screens.
• 300 dpi laser printers can print a line screen of up to 53 lpi.
• 600 dpi laser printers can print a line screen of up to 85 lpi.
• 2540 dpi resolution is recommended for line screens of 150 lpi or above.

• Silk screening on cloth, fabric: 45 to 65 lpi.
• Photocopy masters: 65 or 85 lpi.
• Newspaper: 65, 85 or 100 lpi.
• Quick printing: 85, 100 or 120 lpi.
• Magazines: 120, 133 or 150 lpi.
• Commercial printing: 150, 175 & 200 lpi.

• The fewer pixels per inch, the less image detail.
• A Macintosh monitor displays at 72 ppi.
• A PC monitor displays at 96 ppi.
• Continuous-tone images for reproduction are typically 300 ppi.
• Line-art images for reproduction are typically 1200 to 2000 ppi.
• PPI is often used interchangeably with DPI (dots per inch) to describe computer monitor screen resolution or scan resolution.