Archive for July, 2009
The Basics of Thermal Printing
Direct Thermal Printing
Direct thermal printing occurs when the printed image is creating by heating thermal paper. The coating on the paper turns black in the areas that are heated by the thermal print head. There are also two color direct thermal printers that print black and a second color, often times red. Some of the key benefits to direct thermal printing are that they generally print faster and quieter than dot matrix printers. Also, the only consumable product for the printer is the label. Direct thermal printers also have very little downtime because most can be refilled and printing can resume immediately. Examples of machines that use or used thermal printing include:
Direct thermal printing is best in situations where the print is not intended to be stored for archival purposes or any other purpose that would require an extended period of time. Also, direct thermal is less expensive than most other print methods in terms of supplies because there is no ribbon or additional products needed for the print other than the label. If the printed label is overexposed to light or light the text or barcode will eventually be rendered unreadable. The use of barcodes on products or shipping labels is usually not meant for permanent use. In the case of short lived labels or receipts, direct thermal is your best option.
We at Planet Label do carry supplies for direct thermal printers. All of our desktop thermal transfer label supplies are wound on a 1″ diameter core with a 4″ outer roll diameter, and are sold by the carton. Our industrial products, though, are wound on a 3″ diameter core in a variety of sizes. To visit our desktop line, click here. For our industrial products, click here.
Thermal Transfer Printing
Instead of heating the paper to produce an image, thermal transfer printers have a print head that heats a ribbon containing ink and the heated ink gets transferred to the label. Thermal transfer printing also takes advantage of using other materials to print on rather than thermal paper, such as polyester and polypropylene based media. Also, a major advantage to thermal transfer is that with the use of ribbons, multiple colors can be produced on a print. Typical color thermal printers include CMYK color panels, but unlike dye or ink based printers, they cannot vary the size of color dots while printing, which doesn’t produce quality results seen in color laser or inkjet printers. Color thermal printers are mostly used in industrial settings rather than home or personal environments. Most of the same uses for thermal direct print can be applied for direct transfer print as well.
Thermal ribbons are usually in the form of wax or resin. Planet Label has an array of supplies for thermal transfer labels. See below for links to our supply categories.
More Thermal Labels Featured on Planet Label
For more information on our thermal labels products follow the links below:
Defining Process and Spot Colors
Process Color
A more common name or reference to process color is the CMYK model or four color and is a subtractive color model used in print. Subtractive color simply means that paints, dyes or inks are used to create a range of colors that are produced when certain light wavelengths are absorbed while others are reflected. For example, creating a green color would result in the mixture of paints that would absorb all wavelengths of light, except the desired green light frequency, which is reflected and perceived by our eyes to be the green color intended. The colors created in the CMYK model come from the mixture of Cyan, Magenta, Yellow, and Key (black) inks. It’s a large misconception that the k in CMYK is black based on the last letter of the said color, but it actually relates back to traditional print methods.

