Abstract:
A sheet conveying apparatus includes: a conveying unit nipping a sheet in a nip portion to convey the sheet; a shutter unit rotated in a predetermined rotation direction by being pushed by the conveyed sheet to correct a skew of the sheet; a rotation transmitting unit configured to transmit a rotational driving force to the shutter unit to rotate the shutter unit in the predetermined rotation direction; and an urging unit configured to apply an urging force to the shutter unit so that the shutter unit comes into contact with a surface of the sheet, thereafter the shutter unit is returned to a waiting position along with the passage of a rear end of the sheet through the shutter unit after the shutter unit is rotated by the rotational driving force of the rotation transmitting unit.
Abstract:
A measuring device (60) measures the value (t) of a chosen parameter (thickness) of what has been lifted by a lifting assembly (40) from a stack of sheets (1) of material and allows the lifted material to be moved from the stack when the value is in a predetermined relationship to a reference value (T). One (45a) of a plurality of selectively releasable members (45) on the lifting assembly (40) is moveable in two horizontal directions to locate a sheet attached to the one releaseable member (45a) against locating pins (5, 6) on the work table (3) of the punch press (4). The entire system may be operated automatically by a controller (90).
Abstract:
The invention relates to a loading device for loading a printing plate from a multiple plate stack to an input section of a plate imaging bed in an imaging system for performing a computer-to-plate imaging process on printing plates. The loading device comprises a picking unit for picking a printing plate from the multiple plate stack and transporting the plate to the input section. Further, the loading device is arranged to release the plate after the plate has been positioned in a starting position for autonomous manipulation by the imaging system.
Abstract:
A sheet conveying apparatus includes: a conveying unit nipping a sheet in a nip portion to convey the sheet; a shutter unit rotated in a predetermined rotation direction by being pushed by the conveyed sheet to correct a skew of the sheet; a rotation transmitting unit configured to transmit a rotational driving force to the shutter unit to rotate the shutter unit in the predetermined rotation direction; and an urging unit configured to apply an urging force to the shutter unit so that the shutter unit comes into contact with a surface of the sheet, thereafter the shutter unit is returned to a waiting position along with the passage of a rear end of the sheet through the shutter unit after the shutter unit is rotated by the rotational driving force of the rotation transmitting unit.
Abstract:
A sheet supplying device has a sheet delivering roller for delivering sheets one by one; a feeding roller for feeding the sheet delivered by the sheet delivering roller; a pinch roller urged by the feeding roller to be rotated by the feeding roller; a detecting lever swingable by being contacted by a leading of the sheet delivered by the sheet delivering roller; and a sensor for detecting the swing motion of the detecting lever. An area of said detecting lever to which the leading end of the sheet is contactable is such a curved surface that a distance from a nip between the feeding roller and the pinch roller is substantially constant.
Abstract:
A sheet supplying device includes sheet delivering means for delivering sheets one by one; feeding means for feeding the sheet delivered by the sheet delivering means; and detecting means, disposed between the sheet delivering means and the feeding means, for detecting a leading end of the sheet, wherein when the detecting means detects the leading end of the sheet, a distance between a feeding reference position where the feeding means nips the sheet and the leading end of the sheet is constant irrespective of a path of the sheet delivered to the detecting means.
Abstract:
A sheet advance device has a transport device for transporting a stack of sheets in a first direction, a feed finger located in the path of the stack of sheets for contacting the stack of sheets, a sensor for detecting a movement of the feed finger; and an externally-located adjustment device for positioning of the feed finger. Also provided is a method for advancing sheets on a transport device comprising the steps of moving a stack of sheets on the transport device against a feed finger so as to move the feed finger in a first direction, sensing the movement of the feed finger so as to generate a stop signal, stopping the transport device as a function of the stop signal, removing individual sheets from the stack of sheets so as to reduce the stack in a direction opposite the first direction and move the feed finger opposite the first direction, moving the transport device in the first direction after the removing step, and adjusting a position of the feed finger through an externally-located adjustment device.