## Common ground
All options refer to devices that produce images or text, primarily through printing, copying, or facsimile transmission.
## Options at a glance
**8443.31 – All-in-one machines**
- **Defining trait:** Combines printing, copying, and fax functions with network or computer connectivity.
- **Typical examples:** Laser all-in-one printers, multifunction devices with scanning and faxing.
- **Best fit when:** The device performs multiple core functions (print, copy, fax) and connects to a network or computer.
**8443.32 – Standalone function-specific machines**
- **Defining trait:** Performs only one primary function (printing or faxing), not copying; connects to data-processing systems.
- **Typical examples:** Inkjet printers, standalone fax machines.
- **Best fit when:** The device does not copy and is not part of a multifunction unit.
**8443.39 – Specialized copying/printing with optical or thermal methods**
- **Defining trait:** Uses non-standard printing/copier technologies like optical systems, thermocopying, or diazopaper.
- **Typical examples:** Blueprinters, contact printers for photosensitive paper, thermocopy machines.
- **Best fit when:** The device uses unique physical processes (e.g., heat, light-sensitive paper) not typical in office printing.
**8485 – 3D printers**
- **Defining trait:** Builds three-dimensional objects layer by layer from digital models.
- **Typical examples:** FDM or SLA 3D printers for prototyping or manufacturing.
- **Best fit when:** The device produces physical 3D objects, not flat prints.
**8486.20 – Semiconductor/IC printing devices**
- **Defining trait:** Used in microelectronics manufacturing with precision inkjet or contact printing.
- **Typical examples:** Inkjet printers for solar cells, contact printers for IC fabrication.
- **Best fit when:** The device is used in semiconductor or electronics production, not general office use.
**9010.50 – Cinematographic optical printers**
- **Defining trait:** Specialized for photographic film editing and reproduction in labs.
- **Typical examples:** Contact printers for film negatives, optical enlargers.
- **Best fit when:** The device is used in film or cinematographic laboratories.
## Key differences
| Option | Primary Function | Technology | Use Case | Connectivity |
|-------|------------------|------------|----------|--------------|
| 8443.31 | Multi-function | Digital networked | Office/General | Yes |
| 8443.32 | Single function | Standard printing/fax | General use | Yes |
| 8443.39 | Specialized copying | Optical/thermal | Technical/industrial | Varies |
| 8485 | 3D object creation | Additive manufacturing | Prototyping/manufacturing | Often yes |
| 8486.20 | Microelectronics printing | Precision inkjet/contact | Semiconductor industry | Yes |
| 9010.50 | Film reproduction | Optical contact/enlarging | Cinematographic labs | No |
## How to choose
- Does it print 3D objects? → 8485
- Is it used in semiconductor or IC manufacturing? → 8486.20
- Is it for film or photographic lab work (e.g., contact printing)? → 9010.50
- Does it combine printing, copying, and faxing with network access? → 8443.31
- Does it perform only one function (print/fax) without copying? → 8443.32
- Does it use thermocopying or optical systems for non-standard copying? → 8443.39
## Overlaps & pitfalls
- A device may be both a 3D printer and network-connected (8485 vs. 8443.31), but **main function** determines the code.
- Contact printers can fall under 8443.39, 8486.20, or 9010.50 — priority depends on **use case**: industrial → 8486.20; film → 9010.50; general copying → 8443.39.
- If unclear, choose based on the device’s **primary purpose**