Recorders – Printing – dotting – or punching marker – Ink transfer support or moving means
Patent
1992-03-27
1994-03-01
Reinhart, Mark J.
Recorders
Printing, dotting, or punching marker
Ink transfer support or moving means
H04N 121
Patent
active
052912221
ABSTRACT:
An image exposure apparatus capable of having a semiconductor laser device emits a beam with increasing intensity so that the device will not be destroyed inadvertently. In operation, a switching device of the apparatus allows a reference signal from a reference clock generator to control a photosensitive body moving device for movement. Because the reference clock signal has the same frequency as that of an expected beam detection signal, the photosensitive body moving device starts driving a photosensitive body normally. In time, a beam generator generates a beam of a predetermined intensity. This allows the beam detection signal to be detected correctly and the photosensitive body moving device to reach a predetermined rotating speed as per the reference clock signal. After the beam detection signal starts to be detected correctly, the switching device allows the beam detection signal to be output instead of the reference clock signal. The switching is followed by a normal operation in which the photosensitive body moving device is controlled precisely in speed, and the exposure beam is accurately aligned with each scanning line position. Thereafter, the modulating operation based on a modulation signal commences, allowing an image to be exposed onto the photosensitive body.
REFERENCES:
patent: 5059987 (1991-10-01), Takeyama et al.
patent: 5194879 (1993-03-01), Kotabe et al.
Brother Kogyo Kabushiki Kaisha
Reinhart Mark J.
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