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Technical Information

Z-Fold Charts

Z-Fold chart is also called as Fanfold that was developed by Yokogawa Electric by having a hint from Sutra of Buddhism. Z-Fold chart is popular for its ease of use. The usability, however, was one of technology hurdles for both recorder manufacturer and chart paper manufacturer.

One of hurdles was perforation line for Z-Fold chart.

Selection of pen ink and adjustment of recording pressure effects to smooth recording when crossing the lines. If they were wrong, recording line could thin, run or break.

Another hurdle was sprockets on both sides of chart paper. Paper expands and contracts by humidity and temperature,just same as creatures. To feed chart paper and record data correctly, figure of a hole and its position accuracy mean a lot. Also chart drive mechanism is well designed to adjust to a little change of paper.

Kokusai chart is affiliate subsidiary of Yokogawa Electric Corporation and understand recorders well. Cooperative development with them enabled us to offer best quality chart paper and pens of the world.

Ability to Maintain a Drop of Ink Without Blotting Over a Period of Time.

Kokusai's chart is capable of having a ink pen paused on a position without ink spreading out after a period of 24 hours. Especially in laboratory, it is often the case that pens are left on a chart while the recorder is not running.It is important for the chart paper to stay clean without the spreading of ink.By leaving the paper stained the ink can spread to the platen roller, resulting in the chart sticking to the roller.This may result in improper paper flow, or possibly paper jamming.

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Packing

All Kokusai strip charts, roll and fanfold, are shipped in individual packaging to maximize shelf life.This is in keeping with Kokusai's belief that its recording charts are precision parts of a technologically sophisticated apparatus.Strip charts are shrink wrapped and packaged in a sturdy carton.This maximizes accuracy, readability, and ease of storage and retrieval.

Some charts are shrink wrapped over their carton boxes.

The Importance of Maintaining the Shape of Chart Paper.

Due to the poor raw material quality or rough handling after the coil is cut into sizes will result in distorted,twisted or inclined chart paper that will produce an inaccurate trace.

It may increace the possibility of chart paper coming off the guide holes and resulting stack of paper.Kokusai puts all chart papers through thorough tests to make sure its charts are accurately manufactured.

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