Environmental Conditions Are Important
Temperature and humidity levels can have a major impact on your label printing success. Even small changes (such as from day to night) can greatly affect handling in the printer if the label material being processed is near the limits of acceptability.
All label stock should be "conditioned" while still in its original wrappings. To condition stock, store it in the same environment as the printer for 24 to 48 hours before printing to let it stabilize in the new conditions. It may take longer if there is a wide difference in the storage or transportation environment and the printer environment. This exposure time may also need to be longer for thick stock because of the mass of the material. Early removal of wrapping materials may cause uneven moisture content that can cause curl, waviness, and other problems in the printer.
It's recommended printing in a temperature range of 18 to 24°C (65 to 75°F) with relative humidity of 40 to 60%. Many laser printers are designed to operate in a temperature range of 15.5 to 32°C (60 to 90°F) with relative humidity of 8 to 80%. Printing in an environment outside these recommendations may cause jams, fuser film sleeve tearing, feeding problems, reduced print quality, and cause labels to peel (delaminate.)
