摘要:
A stacker includes a plurality of sheet stacking units individually movable upward and downward. Sheets are selectively stacked onto either of the stacker trays. To remove the sheets stacked on one of the stacker trays, a door is opened. In a state where the door is open, the stacker trays moved by respective elevation units are movable only downward. In this manner, accidental upward movement of each of the stacker trays caused by a malfunction of a motor or the like is regulated, whereby damage to the stacker is prevented.
摘要:
A sheet processing apparatus which is capable of stabilizing a stop position of the sheet bundle, to thereby enable creation of a high finish quality product, and is compact in size and can be manufactured at low costs. Conveyance belts convey the sheet bundle to a flattening position. A pressing roller flattens the folded spine of the sheet bundle by pressing the folded spine. Clampers hold the sheet bundle such that the sheet bundle is not moved when flattening is performed. A CPU starts to stop driving of the conveyance belts when the sheet bundle is conveyed to a predetermined location upstream of the flattening position in the conveying direction of the sheet bundle, and stops the sheet bundle at the flattening position by holding the sheet bundle with the clampers before the conveyance of the sheet bundle is stopped.
摘要:
An image forming apparatus accumulates the number of input print jobs when a control circuit of the image forming apparatus recognizes that, during the execution of the first print job having a sheet post-processing setting, a subsequent new print job having no sheet post-processing settings is input. If the accumulated number of input print jobs is less than or equal to a predetermined value, the image forming apparatus allows the interruption of the first print job by the subsequent new job.
摘要:
In a sheet processing apparatus that is required for high productivity, it is needed to execute skew correction of a sheet in a short time. Thus, when the sheet is struck against a roller or a skew correction member at a high speed to execute skew correction, it may cause a scratch or a noise caused by an impact. Accordingly, the sheet is struck against a skew correction stopper that is moving at a speed slower than a sheet conveyance speed to execute skew correction.
摘要:
A sheet stacking apparatus including first and second stacking trays configured to stack sheets, a detection unit configured to detect a sheet stacking amount on the first stacking tray, a setting unit configured to set an upper limit on stacking amount for controlling the sheet stacking amount that is less than a maximum sheet stacking amount on the first stacking tray, and a control unit configured to stop stacking of sheets on the first stacking tray and stack sheets on the second stacking tray in a case where the sheet stacking amount which is detected by the detection unit reaches the upper limit on stacking amount that is set by the setting unit.
摘要:
A sheet processing apparatus capable of high-speed and accurate detection of a lateral displacement and a skew of a sheet. A motor laterally shifts the sensors during sheet conveyance by a conveying motor, to determine first and second positions of the sheet lateral edge detected respectively by first and second sensors. A finisher controller determines a third position of the lateral edge of the sheet closer to a sheet trailing edge, based on the first and second positions and an amount of conveyance of the sheet from when the first position is detected to when the second position is detected. A lateral displacement of the sheet is corrected by laterally shifting the sheet according to the third position of the sheet lateral edge.
摘要:
A folding line is pressed using both a first and second pressing members of press roller pairs. Further, positions of the first and second pressing members are shifted from each other. When the number of the sheets included in a booklet is a predetermined number or less, the folding line is pressed by only the first pressing member. When the number of the sheets is more than the predetermined number, the folding line is pressed by both the first and second pressing members.
摘要:
There is provided a sheet feeding device in which a sheet is discriminated at preliminary loosening before feeding, and is set to be controlled according to the type of the sheet by a simple configuration without requiring a special configuration. In the sheet feeding device in which air is blown onto a sheet stack, and a sheet floating at the uppermost level by the blowing is absorbed and conveyed, a sheet type is discriminated, based on a moving amount of the tray, at preliminary loosening before sheet feeding after setting the sheet in a tray.
摘要:
A sheet processing apparatus includes a folding roller pair, a sheet pushing member, a detection unit, and a control unit. The folding roller pair folds a sheet or a sheet bundle by a nip portion and conveys a folded sheet or a folded sheet bundle. The sheet pushing member performs a pushing operation in which a tip of the sheet pushing member pushes the sheet or the sheet bundle into the nip portion of the folding roller pair. The detection unit detects whether the tip of the sheet pushing member reaches a predetermined position in a moving direction of the sheet pushing member. The control unit controls driving of the sheet pushing member according to a result of detection by the detection unit such that the sheet pushing member repeats the pushing operation until the detection unit detects that the tip of the sheet pushing member reaches the predetermined position.
摘要:
A sheet processing apparatus which is capable of improving the productivity of sheet processing as much as possible. An image forming apparatus forms an image on a sheet. A finisher is connected downstream of the image forming apparatus and performs post processing on the sheet. The finisher moves at least one of the sheet and a punching unit to adjust a position for punching holes in the sheet. The finisher determines whether or not a post-processing apparatus connected upstream of the finisher is provided with a correction mechanism for correcting a position of a sheet in a direction orthogonal to a sheet conveying direction. When the post-processing apparatus is provided with the correction mechanism, the finisher causes the image forming apparatus to be set such that a sheet conveying interval becomes shorter than when the post-processing apparatus is not provided with the correction mechanism.