Image forming apparatus

Abstract

The invention provides a drawing apparatus, which can continuously expose a long strip of flexible recording medium and can expose a plurality of flexible recording medium in a short time, thereby shortening the latency time and the raising productivity. Between at least two rollers (30, 32), the long strip of flexible recording medium (28) is arranged, and can be conveyed to certain conveying direction. Then, a tension setting mechanism (68) is used for definitely maintaining part of the tension of the long strip of flexible recording medium which is arranged between the two rollers (30, 32) through, so as to pull the long strip of flexible recording medium in a tabulate way; a drawing unit (48) is used for drawing the long strip of flexible recording medium according to two-dimensional graphics, therefore, the invention can raise the productivity because of continuous exposure treatment.

Description

technical field [0001] The present invention relates to a drawing device for drawing by a mechanism, etc., which uses a spatial light modulation element (two-dimensional light modulator) or the like provided on an exposure head to irradiate a long flexible recording medium based on graphic data. The modulated light beam is exposed according to the prescribed pattern. Background technique [0002] Commonly used drawing devices include scanning printed circuit board exposure devices, laser photoplotters, laser printers, and other exposure devices that scan a recording medium with a light beam to draw a desired image thereon. [0003] In such an exposure apparatus, for example, in the case of a printed circuit board exposure apparatus, a laser beam is scanned on a recording medium, that is, a substrate material for a printed wiring board, to perform drawing. The substrate material for a printed wiring board used here is formed by forming a conductive thin film on an insulating...

AI Technical Summary

Problems solved by technology

[0009] In such a conventional printed circuit board exposure apparatus, since the drawing process is completed and the next drawing process is started, the fixing mechanism of the drawing table is released, and the recording medium is respectively fixed by the loader and the unloader, and the sliding mechanism is used to fix the recording medium. Move the drawing table to the side of the loader, use the fixing mechanism of the drawing table to fix the recording medium on the drawing surface of the drawing table, then release the pair of pinch rollers of the loader, and pass the A pair of pull-out rollers draws out the recording medium and makes it sag, and does not move to the next drawing operation until the above operations are completed, so the waiting time other than the exposure processing time is long, so there is a problem of low productivity

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