Thermal Print Head Foldback Electrode

What is a folded electrode?

A folded electrode is a reciprocating electrode structure as shown in the diagram below, with the heater divided into two parts.
For this reason, the heater pattern pitch is twice the specified value.

[image]Image of folded electrode

Why does Toshiba Hokuto Electronics use folded electrodes?

There are no commons...

  • Losses due to common drops are reduced by approximately 10% (compared to our previous model).
  • The heater line can be placed close to the edge of the heat sink.
  • Common space is eliminated, allowing for smaller substrates.

Since there is a slit in the high temperature part at the center of the heating element, the following effects can be expected.

  • The heater temperature is uniform, and the high temperature area in the center is less likely to damage the media.
  • The spatial frequency is doubled, reducing the roughness caused by the slits.
[image]effect image

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