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The principle of 76 dot matrix printer? -Alice

December 02, 2021

There are many types of 76-pin printers, which are generally divided into two parts, the printing mechanical part and the electrical part. Among the 76 dot matrix printers, the mechanical part is composed of 4 parts: the print head, the transmission system, the frame and the shell. The electrical part of the 76-pin printer consists of a control circuit and a power circuit. The control circuit includes a main control circuit, a drive circuit (including a print pin drive circuit, a carriage motor drive circuit, and a paper motor drive circuit), an interface circuit, and a detection circuit. Circuit, DIP switch circuit, operation panel circuit.

76 Dot type printer The print head is installed on the type carriage for printing and is one of the key components of the printer. The print head of the 76-pin printer uses the principle of attraction generated by the electromagnetic coil after power-on, drives the print head steel needle to impact the ribbon, and uses the ink a on the ribbon to attach to the paper to print out dot information. The design of the print head of the 76-pin printer is easy to install on the carriage mechanism, and it is also easy to remove it from the carriage mechanism. The print head can move parallel to the left and right along the print roller.

The print head of the 76-pin printer is electrically connected to the control circuit through a connecting cable. The print head is composed of a base assembly, a coil assembly, and an armature assembly.

The armature inside the print head of the 76-pin printer is fixed on the armature baffle through the armature shrapnel and spring. When the printer receives each character code, the 76-pin printer passes the control circuit detection, and sends a drive control signal to the print head. This signal provides a suitable drive current for the print coil in the print head.

When the printing coil is energized in the 76-pin printer, an attractive force is generated between the armature and the center of the coil, which drives the armature to hit the printing roller, so that a "dot" is hit on the paper. The 76-pin printer then terminates the driving current in the printing coil, and the armature returns to its original position under the action of the armature shrapnel. Then repeat the above actions to print the second and third dots... until the printing is completed. During the printing process of the 76 dot matrix printer, when the temperature of the print head exceeds the preset maximum temperature, the print job will stop. When the temperature drops, the print head will automatically print.

[Disclaimer: The above content is sourced from the Internet and does not represent the views of this site. I hope some of the content can help you. 】


We (Alice) are a manufacturer (manufacturer) specializing in the production of nameplates for office appliances. We have 21 years of experience in making furniture signs. We can produce zinc alloy, aluminum alloy, stainless steel, copper, brass, iron, and titanium. , PC, PET, PE, pvc and other different labels.

Contact us E-mail: sales03@alicelogo.com

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