摘要:
The sheet feeding apparatus includes a sheet stack tray on which sheets to be fed are stacked, a drive motor for moving up the sheet stack tray, a detection sensor for detecting the position of an uppermost sheet stacked on the sheet stack tray, and a control part for controlling the function of the drive motor, wherein, when the detection sensor detects that the uppermost sheet reaches a predetermined height while the drive motor executes a drive so as to move up the sheet stack tray, the control part tentatively stops or decelerates the drive motor and thereafter drives the drive motor so as to move up the sheet stacked on the sheet stack tray to a feed position.
摘要:
The present invention provides an image forming apparatus in which sheet containing device containing a sheet is detachably attached to a containing portion provided in an apparatus main body includes: an engagement portion provided on the sheet containing device; drawing device which is provided in the containing portion to be rotatable using one end thereof as a pivot, the drawing device being engaged with the engagement portion and rotating when the sheet containing device is attached to the containing portion and drawing the sheet containing device through the engagement portion by means of a spring when a predetermined rotating position is reached; and a guide device which, when the drawing device rotates to draw the sheet containing device, guides a movement of the engagement portion in a drawing direction, and has such a configuration that the guide device is composed of a linear portion parallel to a direction in which the sheet containing device is inserted; and a curved portion which is provided on the downstream side of the linear portion with respect to a direction in which the sheet containing device is attached, the curved portion being curved not to extend away from the pivot of the drawing device.
摘要:
The present invention related to a sheet conveying apparatus comprising a first unit, a second unit and a guide member. The first unit includes a first sheet conveyance route, a second sheet conveyance route, a first delivery opening for delivering, from the first unit, a sheet or sheets from the first sheet conveyance route, and a second delivery opening for delivering, from the second unit, a sheet or sheets from the second sheet conveyance route. The second unit is positioned with a space to the first unit, the second unit having a third sheet conveyance route, and a single introduction opening for introducing, to the third sheet conveyance route, a sheet or sheets delivered from the first delivery opening and the second delivery opening. At least a part of the guide member is disposed at a space between the first unit and the second unit, having a first guide surface for guiding the sheet or sheets from the first delivery opening to the introduction opening, and a second guide surface for guiding the sheet or sheets from the second delivery opening to the introduction opening.
摘要:
A sheet feeding apparatus includes a middle plate, a lifter mechanism, and a sheet-feed roller. The sheet-feed roller can move to a first position retracted from the sheet, a second position lower than the first position for feeding the sheet, and a third position lower than the second position. The sheet feeding apparatus has a position control mode in which when a sheet is fed, the sheet-feed roller is moved from the first position to the third position and stopped there, the middle plate is moved toward the sheet-feed roller by the lifter mechanism, the sheet stacked on the middle plate is brought into abutment against the sheet-feed roller, the middle plate is moved until a position detection sensor outputs the detection signal that the sheet-feed roller is in the second position, and a height of the sheet is controlled.
摘要:
An apparatus supporting mechanism comprises: a fixing member 111 fixed to the bottom of the apparatus; a connecting member 115 disposed in the fixing member 111 in such a manner as to freely project and be housed; a supporting member 112 disposed in the connecting member 115 and freely displaced between a first position, at which the supporting member is grounded or located proximate with respect to the installation plane of the apparatus, a second position, at which the supporting member is separate from the installation plane of the apparatus; and a displacing mechanism which displaces the supporting member 112 to the first position when the connecting member 115 projects while displaces the supporting member 112 to the second position when the connecting member 115 is housed.
摘要:
When a sheet containing portion is attached to an accommodating portion, a drawing-in member which is rotatably provided on an accommodating portion is engaged with a locking member which is turnably provided on the sheet containing portion and in this state, the drawing-in member is rotated. With this, the locking member is turned and the sheet containing portion is drawn into the accommodating portion. The guide member is provided with a guide portion and an introduction opening. When the sheet containing portion is attached, the locking member is introduced to the guide portion from the introduction opening. A forming range of the introduction opening in a direction intersecting with an attaching direction of the sheet containing portion is set equal to or smaller than a forming range of the guide portion in a direction intersecting with the attaching direction of the sheet containing portion.
摘要:
A sheet containing apparatus including: a sheet stacking portion which is provided in an apparatus main body and on which sheets are stacked; and a regulating member provided on the sheet stacking portion so as to be movable according to the size of the sheets stacked on the sheet stacking portion and adapted to abut against edges of the stacked sheets to regulate the position of the sheets, in which there is provided a positioning member for effecting positioning on the regulating member on upper and lower sides with respect to the apparatus main body.
摘要:
A sheet containing device including a device frame, a sheet stacking portion that is provided in the device frame and supports sheets, an end regulating portion that abuts against an end of sheets stacked on the sheet stacking portion to perform positional regulation of the sheets, a hitting member that is arranged between the device frame and the end regulating member and moves in accordance with the movement of the end regulating member, and an abutting member for abutting the hitting member in a position to which the hitting member moves, in which deflection of the end regulating member is restricted by the device frame through the hitting member and the abutting member.
摘要:
When a retard roller is rotating in a sheet feeding direction, the rotation is transmitted to a pickup roller and the pickup roller rotates in a direction for conveying the sheet. When the retard roller is rotating in a direction opposite to the sheet feeding direction or is stationary, the pickup roller does not feed the sheet. Therefore, in a successive feeding operation, the sheet to be fed next is always conveyed such that the leading end thereof reaches a nip position between a feed roller and the retard roller. Therefore, the intervals between the sheets are uniform in the successive feeding operation.
摘要:
A sliding member is characterized in that a sliding surface of the sliding member is coated with an amorphous hard carbon film, and a surface of the amorphous hard carbon film has a ten-point mean roughness of equal to or less than 0.7 micrometers and an initial wear height in a range of 0.07 to 0.14 micrometers.