# dot matrix printer

> class of printers

**Wikidata**: [Q584101](https://www.wikidata.org/wiki/Q584101)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Dot_matrix_printing)  
**Source**: https://4ort.xyz/entity/dot-matrix-printer

## Summary  
A dot matrix printer is a class of impact printer that produces characters and images by striking a print head with pins against an ink ribbon, transferring dots onto paper in a matrix pattern. These printers were widely used in the 1970s through the 1990s for their durability and ability to produce multi-part forms. They are still used today in niche applications such as point-of-sale systems and industrial environments.

## Key Facts  
- Dot matrix printers use a print head that moves horizontally across the page, striking pins against an ink ribbon to form characters and images from a matrix of dots.  
- They belong to the broader class of printers and are specifically subclassed under "printer" in knowledge taxonomies.  
- The technology was especially popular during the 1980s and early 1990s due to its reliability and low cost per page.  
- Some notable models include the Epson MX-80 (introduced in 1980), MPS-801 (incepted in 1984), and Apple Dot Matrix Printer manufactured by C. Itoh.  
- Dot matrix printers differ from non-impact alternatives like inkjet and laser printers because they physically strike the paper to create an impression.  
- Common aliases include "dot-matrix printer," "Nadeldrucker" (German), and "针式打印机" (Chinese).  
- The UNSPSC code for dot matrix printers is 43212102, and the WordNet 3.1 synset ID is 03230480-n.  
- They are categorized under topics such as "Dot-Matrix Printing" on Quora and "Category:Dot matrix printers" on Wikipedia.

## FAQs  
### Q: What is a dot matrix printer used for?  
A: A dot matrix printer is used to print text and images using a pattern of dots created by striking pins against an ink ribbon. It was commonly used in offices and businesses before the rise of inkjet and laser printers, particularly for printing multi-part forms and receipts.

### Q: When was the dot matrix printer invented?  
A: While exact invention dates vary by model, the technology became commercially viable in the mid-1970s. One of the earliest popular models, the Epson MX-80, was introduced in 1980.

### Q: How does a dot matrix printer work?  
A: A dot matrix printer works by moving a print head back and forth across the page. As it moves, small pins within the head strike an ink-soaked ribbon pressing against the paper, creating individual dots that combine to form characters or images.

## Why It Matters  
The dot matrix printer played a pivotal role in democratizing computing and business automation during the late 20th century. Its rugged design made it ideal for continuous operation in environments like warehouses, banks, and retail stores where reliability mattered more than print quality. Unlike modern printers, dot matrix devices could easily handle multipart forms—such as invoices and carbon copies—without requiring special paper types or high maintenance. Although largely replaced by quieter and faster technologies, these printers remain relevant in industries needing durable, low-cost solutions for repetitive tasks involving form-based documents.

## Notable For  
- Being among the first affordable and practical computer printers suitable for general office use.  
- Ability to print multi-part forms without smudging or misalignment, which many contemporary printers couldn’t achieve.  
- Longevity in specialized sectors such as logistics, healthcare, and finance due to their mechanical simplicity and robustness.  
- Introduction of standardized interfaces like serial and parallel ports, making them compatible with early personal computers.  
- Serving as predecessors to later thermal and label printers while influencing the development of portable and mobile printing solutions.

## Body  

### Technical Overview  
Dot matrix printers operate using a mechanical process where a series of tiny pins inside a moving print head strike an ink-soaked ribbon pressed against the paper. Each pin creates one dot, and combinations of dots form letters, numbers, and simple graphics. Most consumer-grade models used 9-pin heads, though higher-resolution variants featured up to 24 pins.

These printers typically supported character sets based on ASCII or extended character encodings and often included built-in fonts stored in ROM. Print speeds varied but generally ranged between 30 to 300 characters per second depending on the model and print density.

### Historical Development  
Dot matrix printing emerged as a dominant technology in the late 1970s alongside the growth of microcomputers. Companies like Epson, Commodore, and Apple adopted this method due to its balance of affordability, speed, and functionality compared to earlier line printers or daisy wheel mechanisms.

Epson’s release of the MX-80 in 1980 marked a turning point, offering users both reliability and relatively fast output at a reasonable price. Other manufacturers followed suit, introducing variations tailored for specific markets including education, enterprise, and home computing.

### Variants and Models  
Several subclasses exist under the umbrella term "dot matrix printer," each differing slightly in interface, performance, or manufacturer origin:

- **Apple Dot Matrix Printer** – Manufactured by C. Itoh, designed primarily for Apple II systems.
- **Commodore MPS Series** – Includes models like the MPS-801 (launched in 1984) and MPS-1500C, known for compatibility with Commodore computers.
- **Epson MX-80** – Introduced in 1980; considered one of the most successful early dot matrix printers.
- **TRS-835** – A Croatian-made variant reflecting localized production efforts outside major tech centers.

Each model had distinct features related to connectivity (serial vs. parallel), font support, and physical build, catering to diverse regional and industry needs.

### Legacy and Modern Usage  
Despite being largely superseded by inkjet and laser printers, dot matrix printers continue to serve roles where durability and simplicity outweigh aesthetic considerations. Industries reliant on continuous-feed paper, such as shipping labels, parking tickets, and medical reports, still benefit from their capability to function reliably in dusty or harsh conditions.

Their mechanical nature also makes them less prone to failure when exposed to power fluctuations or extreme temperatures—an advantage not shared by electronic counterparts.

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## References

1. Freebase Data Dumps. 2013
2. BabelNet
3. Quora
4. KBpedia
5. Wikibase TDKIV