Series Thermal Transfer Ribbon

Brady R4300 is a wax/resin thermal transfer ribbon — black ink on a 4.5 micron polyester base film — that is recommended for printing on paper and films that have a matte or rough surface, and is available in several sizes for use in Brady bench top thermal transfer printers. Its smear, chemical and environmental resistance advantages are stated only for the case where it is printed on the appropriate Brady label; this sheet carries no performance data for any specific ribbon-and-label pairing and directs you to the label's own Technical Data Sheet for that. Usage condition is 5 - 35°C (41 - 95°F) at 30 - 85% relative humidity, and exposure to high temperature, high humidity and direct sunlight should be avoided.

Orderable Part Numbers, Packaging & Distributor SKUs

Official Brady SKUs, roll dimensions, package quantities, list pricing, Grainger part numbers, and printer compatibility for R4300.

Extracted directly from Brady Technical Data Sheets to prevent real-world application failures and chemical degradation:

• Print surface recommendation: "This ribbon is recommended for printing on paper and films that have a matte or rough surface." Sentence closes the Description paragraph.
• Printer compatibility: the sheet states the ribbon is available in several sizes to be used in Brady bench top thermal transfer printers. No other printer type is named.
• UL / CSA approvals: "Brady's R4300 Series ribbon is UL Recognized and/or CSA Accepted on various Brady label stocks. Refer to UL file MH17154 and MH10939 and CSA Acceptance Record LS41833 for specific material and ribbon approvals." The approval is scoped to particular ribbon-and-label-stock combinations listed in those files, not to the ribbon on its own — the sheet does not say which stocks qualify.
• Halogen free: the sheet states the R4300 Series ribbon is halogen free per the IEC 61249-2-21 standard (maximum of 900 PPM Cl, 900 PPM Br and 1500PPM total halogens), the JPCA-ES-01-1999 standard (<900 PPM Br and <900 PPM Cl), and the IPC-4101B definition of halogen free (maximum of 900 PPM Cl, 900 PPM Br and 1500PPM total halogens).
• Halogen free scope note: "Note: Fluorine, Iodine and Astatine (Other Group VIIA Halogens) are not restricted in the industry definition of Halogen Free." This note sits inside the halogen-free paragraph and qualifies the halogen-free claim above.
• Regulatory approvals (WEEE-RoHS): the sheet's REGULATORY APPROVALS section states no compliance status. It only directs the reader to look it up per region — In Canada: www.bradycanada.ca/weee-rohs; In Europe: www.bradyeurope.com/rohs; In Japan: www.brady.co.jp/products/labelsuse/rohs; All other regions: www.bradyid.com/weee-rohs
• Performance claims are conditional on the label: the Description states that the advantages of the R4300 Series ribbon — smear, chemical and environmental resistance — apply "when printed on the appropriate Brady label". The sheet does not define which labels are appropriate.
• Performance data is not on this sheet: "Please refer to the appropriate product Technical Data Sheet for specific ribbon and label performance characteristics."
• Environmental exposure: "Exposure to high temperature, high humidity and direct sunlight should be avoided." This is an unlabeled standalone sentence sitting between the end of the Details list (immediately after the Usage Condition line) and the Shelf Life heading. The sheet does not say whether it qualifies the Usage Condition, storage, or both.
• User responsibility for shelf life: within the Shelf Life section the sheet states it remains the responsibility of the user to assess the risk of using the product, and encourages customers to develop testing protocols that will qualify a product's fitness for use in their actual application.
• Values are averages: "Note: All values shown are averages and should not be used for specification purposes."
• Test data disclaimer: the sheet states test data and test results in the document are for general information only, shall not be relied upon by Brady customers for designs and specifications, and shall not be relied on as meeting specified performance criteria; customers developing specifications or performance criteria for specific product applications should contact Brady.
• Compliance information disclaimer: product compliance information is based on information provided by suppliers of the raw materials or on third-party independent laboratory testing; the sheet states Brady makes no independent representations or warranties, express or implied, and assumes no liability in connection with the use of this information.
• Warranty: the sheet's WARRANTY section limits Brady's obligation to replacement of product shown to have been defective at the time of sale, does not extend to persons obtaining the product from the buyer, and is stated to be in lieu of any other warranty including any implied warranty of merchantability or fitness for a particular purpose.

ASTM Physical & Mechanical Properties

Standardized laboratory test data measured in accordance with ASTM D 1000, ASTM D 2979, and ASTM D 2671.

Thermal Transfer Ribbon Compatibility

Official Brady recommended ribbons engineered for maximum contrast, smear resistance, and UL certification compliance.

Chemical & Solvent Resistance Matrix

Standardized dip and rub immersion test observations across industrial fuels, oils, solvents, and cleaners.

Environmental & Aging Durability Testing

Verified Target Applications & Use Cases

• Industrial rating plates, asset identification, and electrical component labeling.