FAQ: Thermal Inkjet Printing

Our thermal inkjet systems feature built-in software that allows the user to optimise usage per print by ‘grey scaling’. For example, when printing a simple expiry date onto a light substrate – an application that doesn’t require true black print density – the operator can adjust the settings to achieve better usage per cartridge.

Prints per cartridge is based upon several factors that can be controlled by the operating system of the printer. For example, larger characters  require more ink. As do formats which contain multiple lines of text, barcodes and graphics. Different font styles can also affect the cost per print.

As a rough guide, to print a batch code consisting of a single line of 3mm text containing 5 characters, you can expect to achieve 1 Million prints per cartridge. A best before date and batch number with a time code may be closer to 350-450K prints per cartridge.

The resolution of the print will depend on the speed in which the line is operating.

• Excellent high-resolution print quality up to 600 dpi
• High-speed printing up to 240 m/min at 300 dpi

1. The ink is entirely contained so cannot cause any mess due to pouring or topping-up.
2. The cartridge houses the entire ink delivery system which is changed each time the cartridge is changed, removing the need for any maintenance.
3. The technology is “drop on demand”, only the ink needed is used. None is required for ink re-circulation.

Thermal inkjet can print onto a wide variety of non-porous and porous packaging types.

The scope of materials that we can print on to is defined by matching the various ink grades to the substrate, much like the more expensive CIJ and TTO technologies.

We have a number of ink grades available, each suited to particular applications. Rotech offer sample testing services in order to identify which grades match your application. The service is free using our own internal test facilities or on-site presentation/trials​.

Essentially, anywhere where we can place the printer where the material is in motion and space allows us to present the printhead to the product. For example- Labelling / Flo-Wrapping / Vertical Form Fill and Seal (VFFS) / Horizontal Form Fill and Seal (HFFS) / Cartoners / Baggers.

Reliable

• Works first time, every time
• No start-up time or shut down routine
• Consistently produces clear, high-resolution codes

Easy-to-use

• Direct data input is available on the printer
• Intuitive, free, format design software package
• Cartridges simply clip in and out

Cost-effective

• Low capital cost of equipment
• Ink cartridges are the only ongoing cost
• No maintenance

Thermal inkjet is a non-contact printing technology in which thermal energy is used to expel ink through a nozzle and onto a substrate. TIJ can print at high speeds on to a wide range of different packaging materials, reliably and cost-effectively.