Laser Beam Printer - Rotational Jitter of the Mirror, Accuracy of mirror surface, Fixed accuracy of Polygon scanner mirror

Items TA320 Advantage
Rotational Jitter of Mirror Time Variation Display → Analysis of Rotational Deviation
Accuracy of Mirror Surface
Continuous measurement
→ Possibility to evaluate the entire surface of the mirror
Fixed Accuracy of mirror
HIgh Resolution
→ Evaluation of high resoulution

Rotational Jitter of the mirror/Accuracy of mirror surface

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The reflection at the point A on a mirror surface is detected by Detector A, and the other reflection at point B on the same surface is detected by Detector B.
Rotational jitter of the motor, which is fixed with polygon mirror, is evaluated with a Time-interval measurement (A to B) using the TA320. Transient analysis of motor is available using the time variation display of the TA320.

TA320 Setting

  • Function : Time interval
  • Display : Time variation

Example
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Long term jitter indicates rotational jitter of the motor.
Short term jitter measures the data from one rotation of the mirror, so the deviation made by each surface distortion can be evaluated.

Fixed accuracy of Polygon scanned mirror

Set up

Tm Ta320 24

If the Polygon scanner mirror is fixed with any tilt, the reflected laser beam through the V-slit is modulated by the tilt.
TA320 can analyze the tilt by measuring the pulse width.

TA320 Setting

  • Function : Pulse width

Related Products & Solutions

TA320 Time Interval Analyzer

The TA320 Time Interval Analyzer is an instrument which can measure the period, pulse width and time interval of a signal continuously at a maximum rate of 14 MS/s with a maximum resolution of 100 picoseconds. The large liquid crystal display panel is equipped with a touch-sensitive screen, enabling an intuitive, smooth operation in measurement and data analysis. A high screen-update rate allows the immediate display of analysis results.

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