Reducing particle size distribution in a printing fluid

A method, comprising:

• diffusing, by a diffuser, dry particles in a pressurized air flow to generate a dry particle-air flow mixture having particles in a first size distribution;
• infusing, by an infuser, the dry particle-air flow mixture in a carrier liquid contained within a tank to form a printing fluid, the dry particle-air flow mixture infused in the carrier liquid at a first rate sufficient to generate turbulence that reduces the particles to a second size distribution;
• and
• mixing, by a mixer, the printing fluid at a second rate sufficient to reduce the particles in the printing fluid to a third size distribution, wherein the dry particles include a plurality of chargeable pigment particles and wherein the third size distribution satisfies a predefined specification.

A printing system, comprising:

• a developer;
• and
• a printing fluid delivery system to generate printing fluid for use by the developer, wherein the printing fluid delivery system includes:
• a diffuser to generate a dry particle-air flow mixture having particles in a first size distribution;
• an infuser to disperse the dry particle-air flow mixture in a carrier liquid to form the printing fluid, the infuser to generate turbulence as the dry particle-air flow mixture enters the carrier liquid to reduce the particles to a second size distribution;
• and
• a mixer to mix the printing fluid to reduce the particles in the printing fluid to a third size distribution, wherein the dry particles include a plurality of chargeable pigment particles.