ISO/IEC 19752:2025

Overview

ISO/IEC 19752:2025 - "Information technology - Office equipment - Method for the determination of toner cartridge yield for monochromatic electrophotographic printers and multi-function devices that contain printer components" - defines a standardized laboratory method to measure toner cartridge page yield for monochrome office laser printers and the printer components of multifunction devices. The third edition updates scope and environmental requirements and clarifies that the method is limited to office-scale devices (not A3-or-larger minimum printable size, photo-only, production or large-format machines).

Key topics and technical requirements

• Scope and limits: Applies to toner-containing cartridges (all‑in‑one and cartridges without a photoconductor) for monochromatic electrophotographic systems; excludes A3+-minimum or photo-only printers and high‑volume production machines.
• End‑of‑life criteria: Yield is determined when a printer signals toner out or when fade (noticeable density reduction) is observed. Fade is judged relative to the 100th printed page.
• Declared cartridge yield: Manufacturers declare yield at or below the lower 90% confidence bound derived from test results - ensuring conservative, statistically defensible claims.
• Test setup and conditions: Specifies installation, driver and firmware defaults, image/quality settings, and environmental conditions (newly emphasized in clause 4.4).
• Sample size and test population: Minimum test combination is three cartridges run across at least three printers (minimum nine cartridges); larger samples are recommended when feasible.
• Test methodology and reporting: Includes standardized test files, procedures for handling defective cartridges/printers, end‑of‑life procedures, and detailed reporting formats (see normative Annexes C and D).
• Special cases: Notes procedural modifications for toner replenishment systems (systems with internal, non‑user‑replaceable reservoirs).

Practical applications - who uses ISO/IEC 19752:2025

• Printer and cartridge manufacturers - to generate reproducible, marketable yield claims and ensure consistency across models and market identifiers.
• Independent test laboratories - to perform certified yield testing and produce comparable reports.
• Procurement and fleet managers - to estimate consumable lifecycle and one input to cost‑per‑page (CPP) planning (standard measures yield only; CPP requires additional cost inputs).
• Regulatory bodies and retailers - to verify manufacturer claims and support transparent consumer information.

Related standards

• ISO/IEC 29142‑1 (referenced for definition of all‑in‑one toner cartridge)
• ISO/IEC JTC 1/SC 28 - the committee responsible for office equipment standards

Keywords: ISO/IEC 19752:2025, toner cartridge yield, page yield testing, monochromatic electrophotographic printers, declared cartridge yield, toner replenishment systems, end of life, standard test page.