Zebra printer workflow

Thermal printing for repeatable bench work.

Scuba Tank Stickers is designed around practical Zebra thermal-label output for fill rooms, boats, clubs, and technical divers. Zebra ZD421T Wi-Fi printing has been tested on real hardware. Other printer models and connection paths remain configuration options until they are checked with the specific hardware and media in use.

Gas analysis

Nitrox

MOD

34 m

O2
32%
He
0%
Pressure
210 bar
Owner
SHOP
ppO2 1.42026-07-13
Why thermal labels

Fast output at the bench.

A fill station needs labels that can be produced quickly after gas is analyzed. Thermal-label output reduces friction compared with generic document printing or handwritten tape.

Repeat fills

Reprint common jobs.

Saved label history is useful when the same diver, course, team, or rental cylinder returns for another nitrox, trimix, oxygen, or stage label.

Readable fields

Keep label size practical.

The label should keep O2, He, MOD, ppO2, pressure, owner, and analysis date readable without becoming too large for cylinder placement.

Current label presets

Two supported output sizes.

Small: 76.2 x 50.8 mm (3"x2"), the current default. Large: 101.6 x 76.2 mm (4"x3"). Test both against the printer DPI, media, cylinder placement, and required reading distance.

Implementation boundary

Verified hardware and configurable hardware are not the same claim.

Zebra ZD421T Wi-Fi printing is the verified real-hardware path. The app can be configured for Zebra Bluetooth workflows, but Bluetooth has not yet been validated on real hardware. Confirm every other model, firmware, transport, label stock, and iOS/iPadOS combination before relying on it at the bench.

Zebra model and firmware

label stock dimensions

Bluetooth, Wi-Fi, or network flow

iOS/iPadOS print behavior

horizontal and vertical label layouts

fill-room offline expectations

Safety note

Printer support does not validate gas.

Scuba Tank Stickers helps format and print labels for analyzed gas. It does not analyze gas, verify oxygen content, choose a safe MOD, or replace proper fill-station and diver procedures.