Abstract: In an ink jet printing apparatus prints an image by employing a print head capable of ejecting ink from ejection ports, a suction unit draws ink from the ejection ports into an interior of the cap by applying a suction force to the interior of a cap that is covering the ejection ports. An atmosphere communication unit exposes to the atmosphere the interior of the cap that is covering the ejection ports, and a pressure increase unit increases a pressure in an internal of the print head. A control unit permits the suction unit to apply the suction force to the interior of the cap, and permits the pressure increase unit to increase the pressure in the internal of the print head before the atmosphere communication unit exposes the interior of the cap to the atmosphere in a state where the ejection ports is covered with the cap.

Abstract: A post-processing apparatus includes a first sheet mount section to place sheets in the shape of a bunch, a second sheet mount section to place sheets in the shape of a bunch, a binding processing unit disposed to be able to shift to a first position to bind sheets placed in the first sheet mount section and a second position to bind sheets placed in the second sheet mount section, and a regulation device that does not position the sheets in the shape of a bunch in an area of the binding processing unit when the binding processing unit is not positioned in the second position.

Abstract: A post-processing apparatus includes a sheet support device, a pair of side edge regulation members that engage in sheet opposite side edges on the sheet support device, and a shift device configured to shift a position of each of the side edge regulation members, and thereby causing the members to perform carry operation to shift the sheet on the sheet support device, wherein in executing the carry operation, the shift device sandwiches the sheet by the pair of side edge regulation members, and thereby makes a state in which pressure is applied to the sheet to execute.

Abstract: A sheet binding processing apparatus including a processing tray, a sheet positioning device, a first binding device, a second binding device, a driving device which moves the second binding device to a binding position where the sheets positioned by the sheet positioning device are to be bound and to a retracting position for retracting to the outside of the sheets positioned by the sheet positioning device, and a controller which controls the driving device and causes the second binding device to be located at the retracting position when the first binding device binds sheets.

Abstract: To provide an apparatus capable of stably performing a binding process on a sheet bundle which is set from the outside as having a setting portion arranged at an external cover of a sheet storing apparatus. In an apparatus including a setting portion arranged at an external cover as being capable of setting a sheet bundle from the outside, the setting portion includes a opening, a setting face on which sheets inserted through the opening are placed, and an abutting-regulating face which performs positioning of end edges of the sheets inserted, the opening is arranged at an open-close cover of the external cover, and the abutting-regulating face are arranged at an apparatus frame which is located at the inner side of the open-close cover.

Abstract: To provide a sheet storing apparatus or a sheet processing apparatus which is downsized and slimmed with a structure that a manual setting portion is arranged at an external casing of the sheet storing apparatus or the sheet processing apparatus. An apparatus includes a setting portion for a binding process to be performed on a sheet bundle inserted from the outside, a binding unit which performs the binding process on the sheet bundle inserted to the setting portion, a sheet conveying path which conveys a sheet, and a processing unit which performs a predetermined process on a sheet as being arranged at the sheet conveying path and being moved in a direction intersecting with a conveying direction of the sheet conveyed on the sheet conveying path, and a movement area of the processing unit in the intersecting direction and the setting portion are overlapped in the intersecting direction.

Abstract: An ink-jet recording ink set includes: an ink (I) containing a dye D1, a compound C1 represented by the following formula and having a U+V of S1, and water; and an ink (II) containing a dye D2, a compound C2 represented by the following formula and having a U+V of S2, and water in which in case that a surface tension ?L1 (mN/m) of an evaluation liquid L1 obtained by adding, to a 5 mass % aqueous solution of the dye D1, a compound C3 in an amount corresponding to 1 mass % of the aqueous solution, and a surface tension ?L2 (mN/m) of an evaluation liquid L2 obtained by adding, to a 5 mass % aqueous solution of the dye D2, the compound C3 in an amount corresponding to 1 mass % of the aqueous solution satisfy a relationship of ?L1??L2?10 (mN/m), the S1 and the S2 satisfy a relationship of 2?S2?S1?7.

Abstract: An ink jet printing apparatus prints an image by employing a print head capable of ejecting ink from ejection ports. The printing apparatus comprises a cap configured to cover the ejection ports, a valve configured to open and close an atmospheric communicating portion that communicates an inside of the cap and the atmosphere, a suction unit configured to generate a suction force, and a control unit. The control unit performs a first operation where the suction unit applies a first suction force to the inside of the cap in a state where the cap covers the ejection ports and the valve closes the atmospheric communicating portion, and a second operation where the suction unit applies a second suction force, less than the first suction force, to the inside of the cap in a state where the cap covers the ejection ports and the valve opens the atmospheric communicating portion.

Abstract: The objective of the present invention is to provide an ejection detection device with an inexpensive and simple structure that can appropriately detect conditions of nozzles, without the control of the quantity of liquid ejected from the nozzles being required. Therefore, for the ejection detection device of the present invention, a light-emitting unit emits light to a light-receiving unit in a direction in which a plurality of nozzles is arranged in a print head. The ejection detection device detects the condition of a nozzle to be detected, which ejects the liquid droplet. At this time, the emission intensity of the light-emitting unit or the responsivity of the light-receiving unit is controlled by the print head in accordance with the location of the nozzle to be detected.

Abstract: An object of the present invention is to cool a sheet discharged onto an output sheet stacking surface while keeping the sheet from floating up.

Abstract: An image forming apparatus is provided that can prevent a winding jam of a sheet, which can be caused owing to curling of the sheet at the front end in the sheet conveying direction.

Abstract: An image forming apparatus includes: an image bearing member; a charging device which charges the image bearing member; a developing device which develops an electrostatic image formed on the image bearing member with toner; a transferring device which transfers a toner image formed on the image bearing member by the developing device onto a recording medium; a separation charge-eliminator disposed opposite to the image bearing member, for separating the medium from the image bearing member after transfer; a current detecting device which detects a separation current flowing through the charge-eliminator; and a control device which outputs a control signal regarding the charge-eliminator based on a first current value detected by the current detecting device with a charging voltage being applied to the charging device and a second current value detected by the current detecting device with a transfer voltage being applied to the transferring device.

Abstract: An inkjet printing head prints an image on a printing medium located at a printing position facing the printing head, by a printing operation in which the printing head ejects ink onto the printing medium, and the printing head is capable of resuming the printing operation after suspension of the printing operation. A supporting unit supports the printing medium on which the image is printed by the printing head, and an adjusting unit is capable of adjusting a facing distance between the printing head and the supporting unit. A control unit controls the adjusting unit so that the facing distance is greater than that during the printing of a printed image, in case the printing operation is resumed and the printed image moves relative to the printing position. The control unit controls the adjusting unit based on the time elapsed between the suspension of the printing operation and the resumption of the printing operation, so that the facing distance is greater as the elapsed time is longer.

Abstract: The purpose of the present invention is to provide a sheet post-processing apparatus which facilitates eliminating of a jammed sheet occurring in the path when sheets discharged from an image forming apparatus are stored as being sorted into two directions. The present invention comprises a sheet post-processing apparatus including a first conveying path through which a sheet introduced from a first introducing port is conveyed, a second conveying path through which a sheet introduced from a second introducing port is conveyed, and a stack portion which stacks sheets conveyed through the second conveying path and which is configured to have at least a part of the stack portion be swingable about an axis intersecting with a sheet conveyance direction of a sheet conveyed to the second conveying path between a stack position where sheets are stacked and an open position where the first introducing port of the first conveying path is opened.

Abstract: The purpose of the present invention is to provide a sheet binding processing apparatus capable of promptly performing a binding process for binding a sheet bundle set at a manual setting portion and a sheet bundle set at a processing tray.

Abstract: The present invention provides a printing apparatus and a printing method which, even if print media of different sizes are printed, can print images in well-balanced, optimum layouts according to the size of each of the print media. Thus, the printing apparatus according to the present invention has leading end detector which detects a leading end of a print medium and trailing end detector which detects a trailing end of the print medium. The printing apparatus further has print control unit which prints images based on a first print data for which a print start position is determined on the basis of the leading end detected by the leading end detector and second print data for which a print start position is determined on the basis of the trailing end detected by the trailing end detector.

Abstract: The purpose of the present invention is to provide a sheet bundle conveying apparatus capable of discharging a sheet bundle from a processing tray where a binding process is performed toward the downstream side in right posture to a right position. The present invention comprises a sheet bundle conveying apparatus which conveys sheets stacked at a stack portion to a storing portion at the downstream side including a first conveying member which conveys sheets at the stack portion by a predetermined distance, a second conveying member which performs relay conveyance of the sheets conveyed by the first conveying member by the predetermined distance as being set to have a higher moving speed than that of the first conveying member, and a driving portion which drives the first conveying member and the second conveying member.

Abstract: The purpose of the present invention is to provide a sheet bundle binding processing apparatus capable of providing relatively strong bonding when a plurality of sheets are bound by corrugation-shaped pressurizing faces with nip-pressure deformation and causing less frictional damage on a sheet face when a sheet bundle is introduced to and discharged from the binding unit. The present invention comprises a sheet bundle binding processing apparatus including a processing tray which includes a sheet placement face on which sheets are stacked, a press binding device which bonds mutually overlapped sheets stacked on the processing tray with pressure-bonding deformation, a taking-off device which applies a taking-off force to sheets bound by the press binding device along the sheet placement face for taking off the sheets from the press binding device, and a sheet bundle discharging device by which the sheets taken off from the press binding device by the taking-off device is discharged from the processing tray.

Abstract: The purpose of the present invention is to provide a sheet bundle binding processing apparatus capable of performing a binding process in high productivity as selecting a binding processing unit from a staple binding device arranged in a sheet introducing area of a processing tray and a press binding device arranged outside the introducing area.

Abstract: The purpose of the present invention is to provide a sheet bundle binding processing apparatus capable of performing a binding process on a sheet bundle inserted to a manual setting portion of an apparatus housing and a binding process on a sheet bundle introduced to a processing tray with a common stapling unit having a simple unit moving mechanism therefor as well as facilitating staple replenishment. The present invention comprises a sheet bundle binding processing apparatus including a processing tray on which sheets are stacked, a binding device which staple-binds a sheet bundle stacked on the processing tray, and a manual setting portion to which a sheet bundle is set from the outside of the apparatus, the binding device being arranged to be movable among a first position where a sheet bundle stacked on the processing tray is to be bound, a second position where a sheet bundle set at the manual setting portion is to be bound, and a third position where staples are replenished to the binding device.