G03G2215/00468

Image forming apparatus

An image forming apparatus includes a first supporting member supporting a long sheet, a feeding unit for feeding the long sheet supported by the first supporting member with respect to a feeding direction and a second supporting member, rotatable about a rotational shaft, for supporting the long sheet with the first supporting member. In a state in which the sheet is bent so that a first portion of the long sheet is supported by the first supporting member and a second portion which is a more rear side than the first portion is positioned above the first portion, the second supporting member is movable between a first position where the second supporting member supports the second portion of the sheet and a second position where the center of gravity of the second supporting member is positioned downstream of a rotational center with respect to the feeding direction and the second supporting member maintains an attitude thereof by its own weight.

Sheet feeding device and image forming apparatus

A sheet feeding device includes a sheet stacking unit, a long sheet stacking unit, a first guide, a first detector, and a closing unit. The sheet stacking unit is movable up and down. Sheets are stacked on the sheet stacking unit. The long sheet stacking unit is detachably mounted on the sheet stacking unit. Long sheets are stacked on the long sheet stacking unit. The first guide is movable along a feeding direction through a groove. The first guide is deformable into a shape that does not interfere with the long sheet stacking unit. The first guide guides a rear end portion of the sheets in the feeding direction. The first detector is provided in the first guide. The first detector detects the sheets stacked on the sheet stacking unit. The closing unit is detachably attached to the groove in the sheet stacking unit. The closing unit closes the groove.

Image forming apparatus that can enhance usability by reducing the number of times a chart is placed on a reading device
11681247 · 2023-06-20 · ·

An image forming apparatus that includes an image bearing member which can bear a toner image, a transfer member used to transfer a toner image onto a recording material from the image bearing member, and a reading device which reads density information of images on recording material disposed on a platen. The image forming apparatus forms a first chart on a first recording material and a second chart on a second recording material by sequentially transferring a plurality of test images while applying a plurality of test voltages to the transfer member. The two charts are read by the reading device and the transfer voltage is adjusted based on the reading result.

IMAGE FORMING APPARATUS
20220197192 · 2022-06-23 ·

An image forming apparatus that includes an image bearing member which can bear a toner image, a transfer member used to transfer a toner image onto a recording material from the image bearing member, and a reading device which reads density information of images on recording material disposed on the platen. The image forming apparatus forms a first chart on a first recording material and a second chart on a second recording material by sequentially transferring a plurality of test images while applying a plurality of test voltages to the transfer member. The two charts are read by the reading device and the transfer voltage is adjusted based on the reading result.

SHEET FEEDING DEVICE AND IMAGE FORMING APPARATUS

A sheet feeding device includes a sheet stacking unit, a long sheet stacking unit, a first guide, a first detector, and a closing unit. The sheet stacking unit is movable up and down. Sheets are stacked on the sheet stacking unit. The long sheet stacking unit is detachably mounted on the sheet stacking unit. Long sheets are stacked on the long sheet stacking unit. The first guide is movable along a feeding direction through a groove. The first guide is deformable into a shape that does not interfere with the long sheet stacking unit. The first guide guides a rear end portion of the sheets in the feeding direction. The first detector is provided in the first guide. The first detector detects the sheets stacked on the sheet stacking unit. The closing unit is detachably attached to the groove in the sheet stacking unit. The closing unit closes the groove.

IMAGE FORMING APPARATUS

An image forming apparatus includes a first supporting member supporting a long sheet, a feeding unit for feeding the long sheet supported by the first supporting member with respect to a feeding direction and a second supporting member, rotatable about a rotational shaft, for supporting the long sheet with the first supporting member. In a state in which the sheet is bent so that a first portion of the long sheet is supported by the first supporting member and a second portion which is a more rear side than the first portion is positioned above the first portion, the second supporting member is movable between a first position where the second supporting member supports the second portion of the sheet and a second position where the center of gravity of the second supporting member is positioned downstream of a rotational center with respect to the feeding direction and the second supporting member maintains an attitude thereof by its own weight.

Image forming apparatus capable of transporting jammed recording medium
10705463 · 2020-07-07 · ·

An image forming apparatus includes plural first transfer units, a second transfer unit, a first transport unit, and a drive unit. The first transfer units transfer an image formed on plural image holding units to an intermediate transfer unit. The second transfer unit transfers the image, which is transferred to the intermediate transfer unit, to a recording medium. The first transport unit transports the recording medium to the second transfer unit. The drive unit drives the intermediate transfer unit with at least some of the plural first transfer units separated from the intermediate transfer unit and with the second transfer unit contacting the intermediate transfer unit when the recording medium, which has been subjected to a transport failure, is transported to a feeding position by the first transport unit.

IMAGE FORMING APPARATUS CAPABLE OF TRANSPORTING JAMMED RECORDING MEDIUM
20200096914 · 2020-03-26 · ·

An image forming apparatus includes plural first transfer units, a second transfer unit, a first transport unit, and a drive unit. The first transfer units transfer an image formed on plural image holding units to an intermediate transfer unit. The second transfer unit transfers the image, which is transferred to the intermediate transfer unit, to a recording medium. The first transport unit transports the recording medium to the second transfer unit. The drive unit drives the intermediate transfer unit with at least some of the plural first transfer units separated from the intermediate transfer unit and with the second transfer unit contacting the intermediate transfer unit when the recording medium, which has been subjected to a transport failure, is transported to a feeding position by the first transport unit.

SHEET TRANSPORTING DEVICE AND IMAGE FORMING APPARATUS

A sheet transporting device includes first and second position correcting components provided at respective positions in a direction of sheet transport and each being configured to correct a position of a sheet in a direction intersecting the direction of sheet transport by being shifted in the direction intersecting the direction of sheet transport while holding the sheet, and a changing component capable of changing an amount of correction of the position of the sheet individually for the first and second position correcting components.

Lifting-lowering motor for sheet processing apparatus

A sheet processing apparatus includes a conveying portion, a first stack portion on which sheets conveyed are stacked, a first regulating portion which regulates a position of a sheet bundle in a crossing direction crossing to the sheet transport direction, a second regulating portion which regulates a position of a sheet bundle in the conveying direction, a first binding portion binding a corner portion of the sheet bundle by a staple, a second binding portion which binds a corner portion of a sheet bundle without a staple, a second stack portion which stacks a sheet bundle discharged from the first stack portion, and a lifting-lowering motor which lifts and lowers the second stack portion. The lifting-lowering motor is located at a downstream, in the conveying direction, of a first binding position where the first binding portion binds a sheet bundle.