Recording medium conveying apparatus and image forming apparatus

Abstract

A recording medium conveying apparatus includes a conveying path, a conveying section, recording medium detection sensors, a medium interval calculation section, a control section, and a difference calculation section. The difference calculation section sets a medium interval based on an output from the recording medium detection sensor serving as a reference sensor to a reference value and calculates a difference by subtracting a medium interval based on the output from each of the other recording medium detection sensors from the reference value. When, during the continuous conveyance of recording media, a value obtained by subtracting the difference from the medium interval based on the output from any of the other recording medium detection sensors is equal to or less than zero, the control section controls the conveying section to extend the medium interval.

Description

technical field [0001] The present invention relates to a recording medium conveying device and an image forming device, and in particular to a technique for continuously conveying a plurality of recording media during continuous printing. Background technique [0002] There is known an image forming apparatus that continuously conveys a plurality of sheets of recording paper to an image forming unit to perform continuous printing. In such an image forming apparatus, in order to carry out conveyance control such that the interval between recording sheets in the conveyance direction of the recording paper (hereinafter referred to as the paper interval) is kept constant, there are devices arranged on the conveyance path for conveying the recording paper. A plurality of recording paper detection sensors at different positions in the direction. Each recording paper detection sensor outputs a detection signal indicating the presence or absence of recording paper at the respectiv...

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Problems solved by technology

In this case, although it is actually possible to convey the recording paper within a shorter paper interval after obtaining correct detection signals from each recording paper detection sensor, if the paper interval becomes below the above-mentioned predetermined interval, the control unit will drive Control, to expand the paper interval on the conveying part to a predetermined interval, not only forms useless control, but also becomes the main factor that reduces the recording paper conveying speed during continuous printing, etc. in order to set a large paper interval

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