Patent ID: 8136809
Filing Date: 2012-03-20
Classification: B65H

Abstract:
1. An image forming apparatus, comprising: a sheet cassette; a sheet feeding apparatus that feeds a sheet stored in the sheet cassette; and an image forming portion that forms an image on the sheet transmitted by the sheet feeding apparatus, wherein the sheet cassette includes: a cassette body that stores the sheet, a first regulating member that is provided in the cassette body to be slid in a forward-to-backward direction and regulates a trailing end of the sheet stored in the cassette body, a second regulating member that is provided in the first regulating member to be slid in a forward-to-backward direction and regulates the trailing end of the sheet stored in the cassette body, a first holding portion that engages first and second rack tooth rows provided in the cassette body and holds the first regulating member and the cassette body, a second holding portion that engages third and forth rack tooth rows provided in the first regulating member and holds the first regulating member and the second regulating member, and a releasing portion that releases holding of the first holding portion and the second holding portion by moving, in response to a pressing operation, in a direction that slidably moves the first regulating member and the second regulating member, wherein the releasing portion includes a first holding releasing portion that releases holding of the first regulating member by the first holding portion, and a second holding releasing portion that releases holding of the second regulating member by the second holding portion, wherein each of the first holding releasing portion and the second holding releasing portion of the releasing portion includes two cam portions that are provided along a sheet feeding direction, wherein the two cam portions of each of the first holding releasing portion and the second holding releasing portion are provided at positions that enable holding of the first regulating member and the second regulating member to be simultaneously released, and wherein, between the two cam portions of the first holding releasing portion, the cam portion at an upstream side of the sheet feeding direction has an asymmetrical shape in a width-wise direction.