摘要:
A sheet processing apparatus including: a stack tray on which a sheet successively delivered from a delivery port is stacked, the stack tray including: a folding route receiving the sheet from the delivery port; a sheet folding device provided in the folding route to fold the sheet; and a sheet stacking surface for stacking the sheet, wherein the sheet processing apparatus is operable in selectively between a first mode in which a sheet from the delivery port is stacked on the sheet stacking surface, and a second mode in which a sheet folded by the sheet folding device is stacked on the same sheet stacking surface as in the first mode.
摘要:
A sheet folding device includes a sheet guide for holding a sheet bunch, a folding roll device having a first folding roll and a second folding roll, a folding blade inserting the sheet bunch supported on the sheet guide to a nip position between the first and second folding rolls, and a blade driving device for moving the folding blade from a standby position to the nip position on the folding rolls. The sheet guide has a curved guide section supporting the sheet bunch and an outlet guide section connected to the curved guide section to guide the sheet bunch to the folding rolls. The curved guide section has a curved guide plate supporting the sheet bunch so that the sheet bunch rolls back toward the folding roll device. The outlet guide section includes a pair of opposite guide plates in folding the sheet bunch by the folding blade.
摘要:
A sheet folding device has a releasable clutch between a roll driving device and a pair of folding rolls for folding a sheet bunch so that when a folding blade inserts the sheet bunch to a nip position on the pair of folding rolls, the first and second folding rolls rotate following the inserted sheets. The sheet folding device includes a guide for holding the sheet bunch at a predetermined fold position. The first and second folding rolls arranged at the fold position are in pressure contact with each other. The folding blade inserts the sheet bunch supported on the guide to the nip position on the first and second folding rolls. The roll driving device rotationally drives the first and second folding rolls. The first and second folding rolls and the roll driving device are coupled together via the releasable clutch.
摘要:
A sheet folding device includes a sheet guide for holding a sheet bunch, a folding roll device having a first folding roll and a second folding roll, a folding blade inserting the sheet bunch supported on the sheet guide to a nip position between the first and second folding rolls, and a blade driving device for moving the folding blade from a standby position to the nip position on the folding rolls. The sheet guide has a curved guide section supporting the sheet bunch and an outlet guide section connected to the curved guide section to guide the sheet bunch to the folding rolls. The curved guide section has a curved guide plate supporting the sheet bunch so that the sheet bunch rolls back toward the folding roll device. The outlet guide section includes a pair of opposite guide plates in folding the sheet bunch by the folding blade.
摘要:
A sheet folding device has a releasable clutch between a roll driving device and a pair of folding rolls for folding a sheet bunch so that when a folding blade inserts the sheet bunch to a nip position on the pair of folding rolls, the first and second folding rolls rotate following the inserted sheets. The sheet folding device includes a guide for holding the sheet bunch at a predetermined fold position. The first and second folding rolls arranged at the fold position are in pressure contact with each other. The folding blade inserts the sheet bunch supported on the guide to the nip position on the first and second folding rolls. The roll driving device rotationally drives the first and second folding rolls. The first and second folding rolls and the roll driving device are coupled together via the releasable clutch.
摘要:
A sheet processing apparatus includes a gripper unit which is moved to a retreat region along long grooves in advance when moving a stapler unit to any one of first and second binding positions. The stapler unit is moved to the binding position by being guided by a guide rail portion while passing above the long grooves. Therefore, moving operations of both of the gripper unit and the stapler unit can be smoothly performed under a state in which movement of both thereof is not prohibited by the long grooves and the guide rail portion. Further, an image forming apparatus including the sheet processing apparatus is provided.
摘要:
The present invention provides a sheet processing apparatus and an image forming apparatus in which even if the apparatus includes a gripping apparatus gripping one side of a sheet bundle to be stapled, the sheet bundle can be stapled in a portion thereof in which the gripping apparatus is located. A gripper unit is moved in a direction crossing one side of sheets and placed in a discharge position in which the gripper unit discharges the gripped sheets and in a coupling position where the gripper unit is coupled to a staple unit. The gripper unit is thus moved in the same direction as that in which the staple unit coupled to the gripper unit at the coupling position moves. Thus, the staple unit can be moved to a stapling position without the need to ensure a retract space.
摘要:
The present invention provides a sheet processing apparatus and an image forming apparatus in which even if the apparatus includes a gripping apparatus gripping one side of a sheet bundle to be stapled, the sheet bundle can be stapled in a portion thereof in which the gripping apparatus is located. A gripper unit is moved in a direction crossing one side of sheets and placed in a discharge position in which the gripper unit discharges the gripped sheets and in a coupling position where the gripper unit is coupled to a staple unit. The gripper unit is thus moved in the same direction as that in which the staple unit coupled to the gripper unit at the coupling position moves. Thus, the staple unit can be moved to a stapling position without the need to ensure a retract space.
摘要:
Provided is a sheet processing apparatus including a gripper unit which is moved to a retreat region along long grooves in advance when moving a stapler unit to any one of first and second binding positions. The stapler unit is moved to the binding position by being guided by a guide rail portion while passing above the long grooves. Therefore, moving operations of both of the gripper unit and the stapler unit can be smoothly performed under a state in which movement of both thereof is not prohibited by the long grooves and the guide rail portion. Further, an image forming apparatus including the sheet processing apparatus is provided.
摘要:
A rubber composition comprising 40 to 100 parts by weight of carbon black per 100 parts by weight of a rubber component,(a) the rubber composition being characterized in that the rubber component contains, in 100 parts by weight thereof, at least 20 parts by weight of a block copolymer prepared by solution polymerization and comprising one unit of butadiene rubber portion and one unit of random-copolymerized styrene-butadiene rubber portion, the butadiene rubber portion having a vinyl content of 15 to 50%, the styrene-butadiene rubber portion having a vinyl content of 20 to 70% and a styrene content of 30 to 60%, the block copolymer having in its entirety a vinyl content of 15 to 60% and a styrene content of 5 to 30% at least 40% of the copolymer being coupled with a tin compound so that the coupled copolymer has a butadiene rubber terminal, the coupled copolymer having only a single Tg at a temperature of up to -60.degree. C.,0 to 80 parts by weight of natural rubber, synthetic polyisoprene rubber, synthetic polybutadiene rubber, synthetic styrene-butadiene rubber, modified products of thers rubbers, or mixtures thereof;(b) the rubber composition being further characterized in that the carbon black has a specific surface area value (N.sub.2 SA) withinthe range of 75 ot 105 as determiend by the nitrogen adsorption method and is at least 15 in the difference between N.sub.2 SA and the iodine adsorption value (IA) thereof, up to 5 in the difference between N.sub.2 SA and the specific surface area valve (CTAB) thereof as determined by the cetyltrimethylammonium bromide adsorption method, 90 to 110 in tint strength and up to -3 in the measured tint strength minus the calculated tint stength (.DELTA.tint).