HP TIJ 2.5 Cartridge Technology for Commercial Variable-Data Printing.

HP45si Cartridge Technology for Industrial Coding The HP45si cartridge format is used for solvent-based thermal inkjet applications where compatible commercial printers need to mark selected non-porous materials.

HSA Systems states that HP45si cartridges are specifically optimized for solvent inks and can operate differently from standard HP45A cartridges, including higher supported speeds and longer throw distances in applicable systems.

Important Terminology

There are several similarly named HP products in the market.

For industrial coding, the terminology should be precise:

HP45si → solvent-optimized TIJ cartridge format
HP45A → standard HP TIJ cartridge format in this industrial-printing context

This should not be confused with the unrelated HP 45A LaserJet toner cartridge used in office laser printers.

HP Smart Card

HSA Systems states that HP45si cartridges include a programmable HP Smart Card that provides cartridge intelligence for compatible systems, supporting areas such as operational monitoring and troubleshooting.

HSAJET Ink Examples

HSA Systems offers several solvent-black inks in HP45si format, including:

• K4011si Bragi
• K4022si Thor
• K4032si Odin
• K4055si Frigg

Each formulation targets different material/application characteristics.

This means users should replace cartridges by exact ink reference, not only by cartridge shape.

Why Exact Ink Model Matters

Two HP45si cartridges can contain different ink chemistry.

The cartridge reference can determine:

• Substrate compatibility
• Drying behaviour
• Adhesion
• Decap characteristics
• Storage conditions

If the existing cartridge says K4022si Thor, replacing it with another HP45si ink without checking compatibility may change print behaviour.

FAQ - HP45A

Q: Is HP45si the same as HP45A?
A: No. HSA Systems distinguishes the solvent-optimized HP45si cartridge from the standard HP45A cartridge used in the HP TIJ 2.5 ecosystem.

Q: Does every HP45si cartridge contain the same ink?
A: No. Different ink formulations can use the HP45si platform, so the exact ink code—such as K4022si—should be matched to the intended substrate and application.

Q: What should I check when replacing an industrial ink cartridge?
A: Check the printer model, cartridge platform, exact ink reference, substrate, current application and any controller compatibility requirements before ordering.

Helpful Internal Links

• HP45si Solvent Ink Cartridges
• Industrial Coding & Marking Consumables
• Packaging Coding Solutions

Contact NEOTECH® UAE

NEOTECH® UAE
Operated by NEOLYN TECHNOLOGY LLC
Store 13, Computer Building, Al Fahidi, Bur Dubai, Dubai 44245, UAE
Email: support@neotech.ae

Disclaimer – NEOTECH® UAE

HSAJET, HSA Systems, HP and associated product or technology names belong to their respective rights holders.

Specifications and application information are based on HSA Systems documentation for K4022si. Drying time, adhesion, decap behaviour and delivered ink volume depend on substrate, operating environment and application.

Customers should confirm the exact cartridge reference, printer compatibility and substrate suitability before purchase.

Last Updated: 14 August 2026  (GST, UTC+4)