Digital Press
Digital presses are similar to copiers and laser printers. They transfer liquid or dry toner particles to paper using electrostatic charges.
Digital presses create images by transferring toner particles to paper through an electrostatic process. The process involves several steps:
- Image creation: A digital file is sent to the press and converted into a bitmap image.
- Electrostatic drum: A cylindrical metal drum is charged with a uniform electrostatic charge.
- Laser or LED array: A laser or LED array scans the image onto the drum. In areas where the image is black, the charge is removed from the drum.
- Toner application: Toner, which is a dry powder with charged particles, is applied to the drum. Toner particles with an opposite charge are attracted to the areas of the drum where the charge was removed, creating the image.
- Transfer roller: A transfer roller with an opposite charge to the toner attracts the toner particles from the drum to a sheet of paper.
- Fusing: The paper passes through a fuser, which uses heat and pressure to fix the toner particles onto the paper.
Digital presses offer several advantages over traditional offset presses, including:
- Variable data printing: Digital presses can print different data on each sheet, making them ideal for personalized marketing campaigns and direct mail.
- Quick turnaround: Digital presses can produce prints quickly, making them suitable for short-run jobs.
- Lower cost: Digital presses are more affordable than traditional offset presses, making them a cost-effective option for small businesses.