Ink cartridge labels can contain several numbers at the same time. One may identify the cartridge family, another may identify a color, and another may be a regional part number or supplier SKU. Treating all of these codes as interchangeable is a common source of purchasing errors.
This guide explains how to separate the most useful references when sourcing compatible ink cartridges and other printing consumables.
The Five Codes You May See
1. Cartridge Family
The family is the model buyers usually recognize. Examples include a Canon PFI family, an Epson T family, or an HP cartridge number. A family may include several colors and capacities.
2. Full Original Consumable Code
The complete code may combine the family with a color suffix, size, or regional identifier. This is normally more precise than the short family name and should be preserved in product data.
3. Color Suffix
A suffix identifies the ink color or function. It is often attached directly to the model code. The same family may contain black, matte black, photo black, cyan, magenta, yellow, light colors, gray tones, optimizer, or specialty colors.
4. Regional Part Number
A longer alphanumeric code may identify a specific regional sales version. It can be important when chip recognition or printer-region settings differ.
5. Supplier SKU or ERP Code
A supplier may assign an internal SKU for ordering and warehouse control. This code is useful for repeat orders with that supplier, but it should not replace the original consumable reference in compatibility data.
Why Prefixes Matter
A prefix often tells you which consumable family you are looking at. Canon examples include PFI, PGI, CLI, BCI, and other product-specific prefixes. Epson codes may begin with T, C13T, SJIC, or another regional family reference. HP products may display a public family number together with a longer alphanumeric part number.
Do not remove a prefix just to make a title shorter. For example, recording a model as “703” instead of “PFI-703” reduces search precision and may confuse the product with another category.
Common Color Suffixes
Color abbreviations are not perfectly identical across every manufacturer, but the following references are widely used:
| Suffix | Typical meaning | Important note |
|---|---|---|
| BK or K | Black | May be dye or pigment depending on the system |
| MBK or MK | Matte Black | Not the same as photo black |
| PBK or PK | Photo Black | Common in photo and wide-format systems |
| C | Cyan | Standard process color |
| M | Magenta | Standard process color |
| Y | Yellow | Standard process color |
| LC | Light Cyan | Used in expanded-gamut systems |
| LM | Light Magenta | Used in expanded-gamut systems |
| GY | Gray | May also appear as Grey |
| PGY | Photo Gray | Confirm the exact printer color set |
| R, G, B, O, V | Red, Green, Blue, Orange, Violet | Specialty colors vary by printer family |
| CO or OP | Optimizer or coating function | Not a standard process color |
Always compare the complete cartridge label. Two suffixes that both contain the word “black” may serve different print modes and installed slots.
How to Normalize Codes Without Losing Information
For product publishing, it is useful to group all color-specific codes under one family product while preserving every full original reference at the variant level.
A practical structure is:
- Product title: compatible brand + cartridge family + product type
- Product handle: normalized family name
- Variant: color and capacity
- Original references: full codes for each color
- Supplier SKU: internal ordering code for the selected supply source
This keeps the storefront easier to browse while retaining the details needed for compatibility confirmation and repeat ordering.
Family Code vs. Supplier SKU
Several suppliers may offer the same compatible family under different ERP codes. These records should not automatically become separate storefront products. First compare the original consumable code, printer models, color, capacity, region, and physical configuration. If they describe the same product family, supplier information can be consolidated while the individual SKUs remain in the internal master data.
Conversely, two records with similar supplier names should remain separate if they represent different cartridge structures, chips, capacities, regions, or product types.
A Practical Code-Checking Process
- Copy the complete code exactly as printed.
- Identify the brand prefix and family number.
- Separate the color suffix without deleting it.
- Record any XL, XXL, capacity, or size reference.
- Record the regional part number and barcode.
- Compare the printer model and current working cartridge.
- Store the supplier SKU separately from the original model.
Use the Compatibility Finder to search the family, full code, or part number. If the code is unclear, send a label photo through the Yescolor inquiry page.
FAQ
Is the shortest number always the cartridge family?
Not always. Confirm the prefix, label context, printer model, and full part number before deciding which part of the code represents the public family.
Can color suffixes be removed from product data?
They can be removed from the family title when colors are organized as variants, but the full color-specific original codes should remain in the product and internal master data.
Are supplier SKUs useful for compatibility search?
They are useful for repeat ordering with the same supplier. For broader compatibility search, the original consumable family and full original code are usually more useful.
Why do similar cartridges have different part numbers?
Differences may relate to color, capacity, region, packaging, chip version, or product generation. Physical similarity alone is not sufficient confirmation.
Code examples describe compatibility references only. Brand names and model numbers remain the property of their respective owners.
