Image forming apparatus and recording medium conveying device included in the image forming apparatus

A recording medium conveying unit, comprising:

• an edge position detector to detect a position of a side edge of a recording medium along a width direction perpendicular to a sheet travel direction of the recording medium in a sheet conveying path;
• and
• a controller configured to
• recognize, based on detection results obtained by the edge position detector, the position of the side edge at multiple detection positions of the recording medium in the sheet travel direction of the recording medium, and
• calculate an inclination of either a line connecting two or more points on side edges of three or more detection positions or an edge-to-edge line obtained by approximating the side edge in the width direction of the two or more points;
• determine whether inclinations of two edge-to-edge lines obtained based on the two or more points on the side edges of the recording medium in the width direction, the edge-to-edge lines having different combinations of the two or more points of the side edges in the width direction;
• and
• a sheet accumulating unit to accumulate the recording medium prior to the transfer operation.

An image forming apparatus configured to convey a recording medium through a sheet conveying path to an image forming position and form an image on the recording medium, the image forming apparatus comprising:

• an edge position detector to detect a position of a side edge of a recording medium along a width direction perpendicular to a sheet travel direction of the recording medium in the sheet conveying path;
• and
• a controller configured to
• based on detection results obtained by the edge position detector, calculate an inclination of either a line connecting two or more points on side edges of the recording medium or an edge-to-edge line obtained by approximating an edge of the recording medium in a width direction using the two or more points, the two or more points corresponding to two or more detection positions from among multiple detection positions, the multiple detection positions including three or more detection positions, and
• determine whether inclinations of two edge-to-edge lines obtained based on the two or more points on the side edges of the recording medium in the width direction, the edge-to-edge lines having different combinations of the two or more points of the side edges in the width direction, are different.