Light control device for an image forming apparatus

Details Light control device for an image forming apparatus Light control device for an image forming apparatus

1992-02-05

1993-04-27

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355 69, G03G 1504

Patent

active

052066886

ABSTRACT:
An image forming equipment in which a fluorescent lamp is so preheated by controlling the current flowing level for the fluorescent lamp on non-copying after the power source is turned ON such that light energy of the fluorescent lamp becomes an appointed value according to the ON state of the fluorescent lamp on copying when controlling the light energy of the fluorescent lamp in accordance with the signals which come from the light energy detecting means provided at an end part of a fluorescent lamp which is provided in the width direction of the document to read a document image and copy the same by reflecting light to the image surface of the document.

REFERENCES:
patent: 4463284 (1984-07-01), Tamura et al.
patent: 4853739 (1989-08-01), Miyamoto et al.
patent: 4870454 (1989-09-01), Kurusu et al.
patent: 4887122 (1989-12-01), Morikawa
patent: 4933607 (1990-06-01), Vogel
patent: 5095329 (1992-03-01), Morikawa

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