General
Manufacturer	OKI
Product type	Coloured ribbon
Colour	Black
Compatibility	OKI Microline 5520, 5521, 5590, 5591
Material	High-quality fabric
Function	Prevention of paper jams
Wear	low
Colour coverage	Constantly high

This product is an original ribbon cartridge from the brand OKI, manufacturer's number 01126301, specifically developed for use in dot matrix printers of the Microline series. It serves as a consumable material for producing black print output and is intended for printer models such as the OKI Microline 5520, 5521, 5590, and 5591. The ribbon cartridge enables high print quality and is designed for a print capacity of up to 4 million characters, ensuring long service life and low maintenance frequency.

Applications
This ribbon cartridge is suitable for use in office and industrial environments where dot matrix printers are employed to produce text documents, labels, invoices, or other printed materials. The printer models for which this ribbon is intended are typically found in environments with high print volumes or in applications requiring specific demands on print durability and quality. Its use in IT and office infrastructure is common, especially when high reliability and long service life of consumables are required.

Functions and Features in Detail
The ribbon cartridge is made of high-quality fabric, which reduces wear and thus extends the ribbon's service life. The ink embedded in the ribbon contains lubricants that facilitate ribbon movement within the printer and simultaneously ensure optimal ink coverage. The consistent impregnation of the ribbon with ink ensures that ink intensity remains consistently high throughout the entire service life. A special protection mechanism on the ribbon prevents paper jams, increasing the reliability of the printing process and reducing the need for manual intervention.

Technology Explained Simply
The technology of the ribbon cartridge is based on an ink ribbon system, where the ribbon is guided between the print hammer and the paper. During each printing operation, the hammer transfers ink onto the paper, forming the characters. The use of high-quality fabric and the special ink formulation ensures that the ink is evenly distributed and does not deplete too quickly. The lubricants in the ink reduce friction between the ribbon and the printing mechanism, resulting in a longer ribbon life and reduced strain on printing components. The special protection on the ribbon minimizes the risk of paper jams by stabilizing the ribbon and preventing it from folding or catching.

Compatibility and Accessories
The ribbon cartridge is compatible with OKI Microline models 5520, 5521, 5590, and 5591. It is intended as replacement consumable material for these printers and can be directly installed into the printers without requiring additional adjustments or tools.

Installation and Mounting
The installation of the ribbon cartridge is performed by inserting it into the printer, where the ribbon is secured in the designated guiding elements. The exact installation instructions are provided in the respective printer manual, which is supplied by the manufacturer. No special tools or additional mounting equipment are required. Installation is carried out by simply inserting and tensioning the ribbon in the printer, with the printer's mechanical guiding elements positioning the ribbon correctly.

Operational Advantages
The use of the OKI ribbon cartridge provides high print quality with even ink coverage and sharp characters. The long service life of up to 4 million characters reduces the frequency of replacement and lowers operating costs. The low wear rate of the fabric and the lubricants in the ink extend the life of printing components and reduce maintenance frequency. The prevention of paper jams through the special protection on the ribbon increases operational reliability and minimizes interruptions in the printing process. Compatibility with the specified OKI models ensures seamless integration into existing systems.