OKI Duplex Unit/C841 Printers

The total count of individual black ink cartridge units included with the product or supplied in its standard package. It indicates how many separate black cartridges—such as those used for printing—are available for use or replacement when the item is purchased.

The total number of printable pages that a black ink cartridge or refill can produce before it needs replacement. This value represents the print yield capacity for the consumable and helps users estimate how many documents they can print with a single unit.

The amount of black ink contained in a cartridge or refill, expressed as a liquid volume such as milliliters (ml) or liters (l). It indicates how much ink is available before the cartridge needs replacement and helps consumers compare capacities across brands and models.

A list of brand names that the product is compatible with. Each entry represents a manufacturer whose products can be used with or alongside the item.

The yield rating of a printer cartridge, indicating the approximate number of pages or units it can produce before replacement is needed. Common ratings include "Standard Yield", "High (XL) Yield", and "Extra (Super) High Yield".

A list of official certifications or compliance marks that the product has received from regulatory bodies, safety organizations, or industry standards groups. Each entry represents a distinct certification such as CE, FCC, RoHS, UL, or WEEE, and may include additional details like version numbers or specific test reports.

The colour or combination of colours that a product is available in, expressed as common names such as "Black", "Silver" or comma‑separated lists like "Black, White". It indicates the visual appearance of the item for consumers.

A list of brand names, model numbers or product types that the item is compatible with. Each entry should be separated by commas to allow easy searching and comparison across products.

Indicates whether the product is sold in a multi‑unit package, meaning more than one individual item is included within the same container.

A unique alphanumeric identifier assigned by the original equipment manufacturer that distinguishes a specific product model or variant. It is used for cataloging, inventory management, and support purposes.

The form of packaging used for a product, such as box, blister pack, bag, or pallet. It indicates how the item is contained and protected during shipping and storage.

A comma‑separated list of colour names that a product can produce or display, such as black, cyan, magenta, yellow and any additional variations (e.g., photo‑black, matte black). This attribute applies to printers, ink cartridges, toner cartridges, and other printing consumables.

The general category or style of the product, such as laptop, printer cartridge, or cooling fan. It helps buyers quickly identify the nature of the item and compare similar products.