nix/modules/nixos/services/printing

Printing Service Module

This module configures a Canon PIXMA iX6820 printer for fullbleed/borderless printing on NixOS.

PPD File

The Canon_PIXMA_iX6820_AirPrint.ppd file is essential for enabling fullbleed (borderless) printing on the Canon PIXMA iX6820.

The default IPP/PPD driver included with Linux claims to support borderless printing, but it never works in practice. This custom PPD was generated via macOS and manually converted to work with Linux/CUPS to actually enable fullbleed printing functionality. It provides CUPS with the necessary printer capabilities and configuration options, including the 4x6.Fullbleed page size and media type options.

Nix Module

The module (default.nix) provides a NixOS service that:

• Enables CUPS printing service
• Installs the custom PPD driver for the Canon PIXMA iX6820
• Configures the printer via hardware.printers.ensurePrinters
• Sets default print options for high-quality borderless photo printing:
  • Page size: 4x6 Fullbleed
  • Color model: RGB
  • Print quality: High
  • Media type: Photographic
• Sets the printer as the default system printer