Coastal Care

By Willem Swanepoel, Mr

On coastal sites, keep an eye on humidity, media sealing and head condition because Durban and Cape moisture can shift colour and drying fast.

Coastal shops deal with air that can change how media feeds, dries and holds colour. Along the South African coast, issues often show up as softer drying, edge curl or prints that look different from inland output. Coastal Care is our note for teams running FastJET, Stormjet and Skywalker machines near sea air and higher moisture.

Near Durban and Cape Town, moisture in the room can change feed, drying and the way colour sits on vinyl and banner stock. Coastal Care focuses on humidity checks, media storage and head condition notes for FastJET, Stormjet and Skywalker setups.

Humidity checks before a run

• Room humidity and temperature noted
• Close photo of mottling, curl or slow drying
• RIP preset or ICC profile named clearly
• Printer, ink set and media listed

Use this note with the relevant ICC profile and cartridge record for the same machine. Coastal faults often look like colour drift at first, yet the cause sits in storage, sealing or head health. Reading the notes together helps separate environment issues from ink delivery problems.

Sea air effects on output

Coastal Care covers the print-room issues that show up faster near the sea. In Durban and the Cape, humidity, media sealing and head condition can shift drying and colour, so those checks need tighter attention.

Start with the stock, the room reading and the drying behaviour after the first passes. Along the coast, laminated media, self-adhesive vinyl and banner can react differently from inland batches because moisture uptake changes how they travel and cure. Durban and Cape conditions often need closer checks on large-format work.

Check whether rolls were kept sealed before loading and whether edge curl appeared before printing started. A quick note beside the printer with heater values, pass mode and the first acceptable swatch is often more useful than trying to remember settings later in the shift. Small changes in the morning can look bigger by late afternoon when the air changes.

Coast-specific checks we include

Shops near the sea often need tighter control over opened rolls, overnight storage and morning warm-up prints. Durban humidity and Cape moisture can make the same file behave differently from Johannesburg output, especially on vinyl and banner work. Record those site conditions with the machine name instead of treating every colour shift as a profile fault.

Salt air and damp conditions can shorten the gap between cleaning checks, especially when drying starts to soften or edges lift. Inland sites may struggle more with dust, but coastal rooms more often show media movement and slower cure. When power interruptions happen, note whether the acceptable print came before or after restart so the comparison stays useful.

Operated by Astros Marketing (Pty) Ltd from 2 Makro Place, Sunnyrock 1401.