printprotocollen

Printprotocollen refers to the collection of communication protocols used to submit, process, and manage print jobs in computer networks. They define how a client sends a job to a printer, how the printer accepts and queues it, how the printer renders the data, and how status information and errors are reported back to the requester. Printprotocollen operate across multiple layers, including transport (network connections), the print data format (how content is encoded for printing), and management (discovery, authentication, and job control).

Common printprotocollen include:

- Internet Printing Protocol (IPP): the modern, widely deployed standard for network printing. It supports job submission, status reporting, and printer management, and can operate over secure transports such as TLS.

- LPD/LPR: an older UNIX-origin protocol that provides simple line-by-line print submission, often used for legacy systems.

- JetDirect/RAW printing (port 9100): a straightforward method for sending printer data directly to printers that expose a raw data channel.

- Printer data languages: PostScript and PCL describe the page content; PJL (Print Job Language) adds job-level controls and metadata.

- Other transport and discovery mechanisms: SMB/CIFS in Windows environments and Web Services for Devices (WSD) for device discovery and management; SNMP is used for status monitoring in some setups.

- Modern variants: IPP Everywhere and cloud-inspired printing approaches aim to reduce driver dependencies and enable cross-device printing.

Historically, printprotocollen evolved from simple spoolers to network-aware protocols that support authentication, encryption, and remote management. Security considerations include the use of TLS, access controls, and minimizing exposure of sensitive print data. Interoperability depends on choosing compatible protocols and data formats across clients and printers.

---