Patent application number | Description | Published |
20120045248 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image bearing member for bearing an electrostatic image; a rotatable supporting member swingably supporting the rotatable supporting member, the rotatable supporting member being provided with a first gear portion and being rotatable while carrying a plurality of developing devices for developing the electrostatic image with toner; a drive transmission device for transmitting a rotational force to the rotatable supporting member, the drive transmission device being provided with a second gear portion engaged with first gear portion at an engagement position; and an opposing portion provided opposed to the rotatable supporting member with a gap therebetween which is smaller than an amount of engagement between the first gear portion and the second gear portion. | 02-23-2012 |
20120121298 | IMAGE FORMING APPARATUS - An image bearing member on which an electrostatic image is to be formed; a rotatable supporting member, configured to support a developing device for developing the electrostatic image and configured to rotationally move the developing device toward a developing position, provided movably in a rotational axis direction with respect to a main assembly of the image forming apparatus; an urging member for urging the rotatable supporting member in the rotational axis direction; and a regulating portion for regulating a position of the rotatable supporting member, with respect to the rotational axis direction, urged by the urging member are provided. | 05-17-2012 |
20130221612 | IMAGE FORMING APPARATUS - A supporting portion is provided to project from an upper surface of a side regulating member which is provided in a sheet feeding cassette which is detachably attached to a color laser beam printer body, and which regulates a position of a sheet in a width direction orthogonal to a sheet feeding direction, and this supporting portion regulates downward deformation of a conveyance guiding member which is positioned above the sheet feeding cassette and which forms a sheet conveying path R which guides the sheet. | 08-29-2013 |
20130222505 | SHEET FEEDER AND IMAGE FORMING APPARATUS - The present invention provides a sheet feeder, including: a support member which can be rotated around a pivot at upstream side thereof in a sheet feeding direction and supports sheets; a driving unit rotating the support member upwardly; a feeding portion feeding the sheets; a first detection unit detecting the sheets on the support member at a first detection position above the support member; a second detection unit detecting the sheets on the support member at a second detection position located at upstream of the first detection position and below the first detection position; and a stacking amount determining portion determining a stacking amount of the sheets on the support member, based on a period of time between a time when the second detection unit detects the sheets and a time when the first detection unit detects the sheets while the support member is upwardly rotated by the driving unit. | 08-29-2013 |
20130228967 | IMAGE FORMING APPARATUS - An image forming apparatus capable of easily performing jammed sheet recovery in a sheet feeding portion is provided. | 09-05-2013 |
20140294474 | IMAGE FORMING APPARATUS - With the present invention, an image forming apparatus is prevented in which a recording material on which a toner image is heated and fixed and which is discharged is cooled, and the toner image heated and fixed onto the recording material is prevented from being melted. Further, a conveying portion is prevented from being cooled, so that unevenness of cooling of the toner image is prevented, and the image forming apparatus does not cause any contact mark of the conveying portion. | 10-02-2014 |
20150061219 | IMAGE FORMING APPARATUS - One aspect of the present invention provides an image forming apparatus that can prevent degradation of sheet feeding performance at low cost. A drive transmission portion | 03-05-2015 |
20150115526 | SHEET CONVEYING APPARATUS AND IMAGE FORMING APPARATUS - A sheet conveying apparatus includes a restricting portion provided on a second roller side with respect to a sheet conveying path and near a nip portion. This restricting portion is configured such that a first abutment portion is positioned on the second roller side from a straight line connecting a point protruding most to the sheet conveying path of the restricting portion and the nip portion in a state in which a second abutment portion is in contact with a surface of a first sheet as a rotary member rotates in a predetermined direction by the first abutment portion being pushed by the first sheet. | 04-30-2015 |