# Printer Command Language

> Page description language

**Wikidata**: [Q845753](https://www.wikidata.org/wiki/Q845753)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Printer_Command_Language)  
**Source**: https://4ort.xyz/entity/printer-command-language

## Summary
Printer Command Language (PCL) is a page description language developed by Hewlett-Packard (HP) that describes the appearance of a printed page at a higher level than an actual output bitmap. It is widely used for printing documents on HP and compatible printers, offering precise control over text, graphics, and formatting.

## Key Facts
- **Aliases**: PCL, Printer Control Language, PCL 3, Printer Command Language
- **Country of Origin**: United States
- **Media Type**: `application/vnd.hp-PCL`
- **Instance of**: Page description language
- **Wikipedia Title**: Printer Command Language
- **Wikipedia Languages Available**: Catalan, Czech, German, English, Spanish, Persian, French, Hungarian, Italian, Japanese
- **Readable/Writable File Formats**: HP Printer Command Language (ESC+E), HP Printer Command Language (PCL6), HP Printer Command Language (UEL)
- **Stack Exchange Tag**: [printer-control-language](https://stackoverflow.com/tags/printer-control-language)

## FAQs
### Q: What is the difference between PCL and PostScript?
A: PCL is a proprietary page description language developed by HP, while PostScript is an open standard developed by Adobe. PCL is optimized for HP printers, while PostScript is more widely supported across different printer manufacturers.

### Q: Which printers support PCL?
A: PCL is primarily supported by HP printers and many compatible models from other manufacturers. It is widely used in enterprise and commercial printing environments.

### Q: How does PCL differ from a bitmap?
A: Unlike a bitmap, which represents a printed page as a grid of pixels, PCL describes the page in a higher-level format, including text, graphics, and formatting instructions, allowing for more efficient and precise printing.

### Q: Is PCL still used today?
A: Yes, PCL remains in use, particularly in enterprise environments, where it is known for its reliability and compatibility with HP printers. However, newer standards like PDF and PostScript are also widely adopted.

### Q: Can PCL be used for non-printing applications?
A: While PCL was originally designed for printing, its structured approach to page description has led to its use in other applications, such as document archiving and digital publishing.

## Why It Matters
Printer Command Language (PCL) played a pivotal role in the evolution of computer printing by providing a standardized way to describe printed documents. Developed by Hewlett-Packard in the 1980s, PCL allowed printers to interpret complex formatting instructions, including text, graphics, and fonts, without requiring the printer to understand the entire document structure. This abstraction made printing more efficient and flexible, enabling high-quality output across different HP printer models. PCL's proprietary nature initially limited its adoption, but its widespread use in enterprise environments cemented its importance in commercial printing. Today, while newer standards like PDF and PostScript have gained prominence, PCL remains relevant, particularly in legacy systems and environments where HP printers dominate. Its impact lies in its foundational role in shaping the printing industry and its enduring influence on how documents are formatted and printed.

## Notable For
- **Proprietary Standard**: PCL was developed by HP as a proprietary page description language, distinguishing it from open standards like PostScript.
- **Enterprise Adoption**: Widely used in commercial and enterprise printing environments, particularly with HP printers.
- **Legacy Support**: Remains relevant in legacy systems and environments where HP printers are still prevalent.
- **Efficient Printing**: Designed to optimize printing by abstracting page description from the actual bitmap output.
- **Cross-Platform Compatibility**: Supported by many non-HP printers, making it a versatile choice for printing applications.

## Body
### Origins and Development
Printer Command Language (PCL) was developed by Hewlett-Packard (HP) in the 1980s as a proprietary page description language. It was created to provide a standardized way for printers to interpret and render complex documents, including text, graphics, and formatting instructions, without requiring the printer to understand the entire document structure. This abstraction allowed for more efficient and precise printing, making PCL a key technology in the early days of computer printing.

### Technical Specifications
PCL operates at a higher level than a bitmap, describing the appearance of a printed page using commands that define text, graphics, and formatting. This approach allows for more efficient printing and better compatibility across different HP printer models. The language supports various file formats, including HP Printer Command Language (ESC+E), HP Printer Command Language (PCL6), and HP Printer Command Language (UEL), which are both readable and writable.

### Industry Impact
PCL played a significant role in the printing industry by standardizing the way documents were formatted and printed. Its proprietary nature initially limited its adoption, but its reliability and efficiency made it a preferred choice in enterprise environments. Over time, newer standards like PDF and PostScript gained traction, but PCL remains relevant, particularly in legacy systems and environments where HP printers are still widely used.

### Current Relevance
Today, PCL is still used in many printing applications, especially in enterprise settings where HP printers are prevalent. While newer standards offer more advanced features, PCL's simplicity and compatibility make it a valuable tool for printing documents. Its enduring relevance underscores its importance in the history of computer printing and its continued role in the industry.

## References

1. Freebase Data Dumps. 2013