| 摘要 |
A paper supply controlling apparatus in a printer and a paper supply method are provided. The paper supply controlling apparatus includes a pickup roller for picking up sheets of paper loaded in a paper feeding cassette, a pickup roller driving portion for driving the pickup roller, a recognition pattern detecting sensor for detecting passage of a recognition pattern formed on a circulating photoreceptor belt and outputting a recognition pattern arrival signal, and a paper pickup timing correction portion for determining a variation in the circulation cycle of the photoreceptor belt from the generation interval between the recognition pattern arrival signals, and controlling the pickup roller driving portion so that the time for picking up a sheet of paper from the paper feeding cassette on the basis of the time when the recognition pattern arrival signal is received is compensated for using the variation. Accordingly, a paper pickup time is controlled in response to a variation in the circulation cycle of a photoreceptor belt so that the supplying interval between sheets of paper to be sequentially picked up from a paper feeding cassette is not narrowed below a predetermined interval. Therefore, generation of a paper jam between supplied sheets of paper is prevented, so that the number of image printing errors is reduced.
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