Oki Data ML321

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The Oki Data ML321 is a monochrome impact dot matrix printer designed primarily for office and business environments requiring reliable, continuous form printing. It utilizes a 24-pin print head capable of delivering precise and clear text output with a print resolution of 240 x 144 dpi, which suits multipart forms and invoices. The printer supports a print speed of approximately 533 characters per second (cps) in draft mode, ensuring timely document processing. It includes a standard parallel interface as well as a USB connection for flexible connectivity options with contemporary computer systems. The ML321 can handle various media types including continuous stationery, single sheets, and multipart forms up to five copies, enhancing its versatility for different document formats. With its compact design and automatic paper loading feature, the ML321 offers ease of operation and maintenance in busy office settings.

The Oki Data ML321 offers durable impact printing suitable for multipart forms and carbon copies, essential for financial and administrative tasks. It provides a robust build with a reliable 24-pin print head that ensures consistent print quality throughout its lifespan. The device supports multiple connectivity options such as parallel and USB interfaces, facilitating integration into existing office setups. Its relatively high print speed for an impact printer minimizes wait times for printed documents in busy environments. The automatic paper loading system reduces setup time and enhances workflow efficiency. Additionally, the printer is energy efficient and designed for minimal maintenance, lowering the total cost of ownership.

Due to its dot matrix technology, the Oki Data ML321 produces lower resolution compared to modern laser or inkjet printers, limiting its suitability for high-quality graphic or photo prints. Noise levels during operation are higher than non-impact printers, which may affect quiet office environments. The printer's monochrome output restricts its use to text and simple graphics only, without any color capabilities. Paper feeding mechanisms can occasionally jam with thicker multipart forms if not properly aligned. The device's physical size is relatively larger compared to newer compact printers, potentially requiring more workspace. Additionally, replacement ribbons and parts might be harder to source due to the printer’s older technology and discontinued status.

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