Paper transport device

Abstract

To provide a sheet conveying device having a rolled sheet mounted with the central portion in the width direction of the rolled sheet as a reference, in which detection accuracy of a near-end sensor can be maintained even when rolled sheets having different widths are mounted.SOLUTION: A sheet conveying device comprises: a support shaft for pivotally supporting a plurality of types of rolled sheets having different widths; a guide for positioning the central portion in the width direction of the rolled sheet pivotally supported by the support shaft at a reference position and is movable in the width direction of the rolled sheet according to the type of the pivotally supported rolled sheet; and a sensor which is attached to the guide and detects a near end of the rolled sheet based on the change in a diameter of the rolled sheet.SELECTED DRAWING: Figure 6

Claims

[Claim 1] A support shaft that holds up multiple types of roll paper with different widths, A guide that moves in the width direction of the roll paper according to the type of roll paper being supported, positions the roll paper supported on the support shaft at a reference position with the center of the roll paper in the width direction of the roll paper, A sensor attached to the guide detects the near end due to a change in the diameter of the roll paper, A partition section that separates the circuit board on which the control circuit for controlling the paper transport device is installed, A sensor harness is stretched between the guide and the partition section, Equipped with, A paper transport device wherein the first mounting position of the guide to which one end of the sensor harness is attached and the second mounting position of the section to which the other end of the sensor harness is attached are located opposite each other across the support shaft. [Claim 2] With an additional rack and pinion system, The guide is attached to the rack and pinion and is in contact with one side of the mounted roll of paper to position the roll of paper at the reference position. The paper transport device according to claim 1. [Claim 3] The rack and pinion is formed inside the support shaft, The paper transport device according to claim 2. [Claim 4] The system further includes a print head that prints on the paper drawn from the aforementioned roll of paper, A paper transport device according to any one of claims 1 to 3.

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