摘要:
A continuous web substrate duplex printing system which can utilize a single otherwise conventional or existing xerographic, print engine (normally printing conventional cut sheet substrates) without substantial structural modification, and without requiring plural print engines on opposite sides of the web. The continuous web may be fed uncut into the print engine to two transfer stations alternatingly engaging a single endless belt imaging surface, which two alternating transfer stations are in line with one another in the direction of movement of the imaging surface, with web inversion and a controlled expandable/contractible web loop in between those two transfer stations, for respectively transferring the page print images onto the two respective sides of the continuous web in sequential batches of plural first and second side images, in the proper page sequence and positions and without any spaces between page images along the web.
摘要:
A continuous web substrate duplex (both sides) printing system which can utilize a single otherwise conventional or existing xerographic print engine (normally printing conventional cut sheet print substrates) without substantial structural modification, instead of requiring plural print engines on opposite sides of the web. This may be accomplished as shown by operatively docking a special duplex continuous web printing substrate supply module with the cut sheet print engine to form an integral duplex web printing system. Here, this duplex web printing module has an integrated fusing system with translating and half-surface-speed roll fusers for fusing the transferred images on both sides of the web with those two separate moving fusers, with each fuser fusing images on one side of the web after respective separate transfers of sequences of plural first and second web side images. One of these moving fusers is fusing the first side images in an expanding and contracting web loop section of the endless web in between first and second side image transfer stations.
摘要:
A pivoting platen for use with a printhead of a printing device includes a rigid portion and a compressible portion. The compressible portion contacts a sheet, which is pressed against the compressible portion by the printhead. The platen pivots about a rotational axis as the printhead scans across the sheet, creating uniform pressing forces between the printhead and the platen. These uniform pressing forces ensure uniform density of the image bands printed by the printhead.
摘要:
A combined input scanner and output scanner has a frame assembly, a document transport to transport a document through the scanner in a path in a first direction and, a copy sheet transport to transport a copy sheet through the scanner a document registration means and a copy sheet registration means, the document registration gate including a cover pivotally mounted on the machine for movement between an open and closed position over the document transport path, said cover having at least one document registration gate adjacent its downstream end which extends into the document transport path to register the lead edge of a document when the cover is in the open position, the copy sheet registration means including at least one copy sheet registration gate in the copy sheet transport path to register the lead edge of a copy sheet when said cover is in the open position. The cover has a tab for removing the at least one copy sheet registration gate from the copy sheet transport when the cover is in the closed position over the document transport path.
摘要:
A reproducing apparatus includes a portable imaging platen and a self contained portable copier not having a platen but having a scanning carriage adapted for scanning movement having a reading head for scanning a document to produce a digital image and a printing head for printing a digital image on a copy sheet. The portable platen includes a pair of parallel copier transport rails mounted to a transparent document support member defining a portable copier transport path across the document support member. The rails have a drive surface and the portable copier is mounted on the rails and has a drive mechanism for transporting the portable copier along the drive surface of the rails.
摘要:
A duplex printer (or copier) 10 has a copy sheet output path 92 through output rollers 84, curved chute 96, and output rollers 67 into output tray 86. Commonly utilizing a substantial portion thereof is a duplexing path 94 for returning copy sheets to be imaged on their opposite sides to make duplex copies. Rollers 67 alternatively, with reversal, feeds copy sheets into the duplex path 94, aided by rollers 84 at the path separation. The distance between output rollers 84 and the reversible ejecting rollers 67 along the chute 96 is substantial, preferably approximately one half the sheet dimension in the sheet feeding direction of the shortest sheet to be duplexed. The rollers 84 feed copy sheets through the copy sheet output path 92 to the reversible rollers 67 until about one half of the sheet extends out of their nip of these rollers 67. A reversed sheet can then be uninterruptedly reverse fed by, outside, of another sheet moving in the opposite direction in the same arcuate chute 96, for a substantial time period. Thus, a subsequent copy sheet may be fed downstream (upwardly) in the output path 92 simultaneously with, for a substantial time period, the reverse (downward) feeding of the preceding copy sheet into the duplex path 94, to enable slow, uncritical, reversals of rollers 67 even if the sheets are closely spaced in the output path. The duplex path 94 has an even greater path distance between the reversible rollers 67 and the first duplex path feed nip 90, which is separate from the rollers 84.
摘要:
Sheet transporting apparatus including a pair of rollers (13, 14) forming a sheet transporting nip (12), and adapted, when in an initial position (FIG. 1a), to engage the leading edge (17) of a sheet (11) delivered thereto, and subsequently to produce an orbital motion of the rollers one about the other so as to progressively change the direction of motion of the sheet while the sheet is advancing through the nip (FIGS. 1b-1d).
摘要:
An adjustable sheet cassette for use in apparatus feeding sheets such as in an automatic copier or printer comprises a sheet stack support platform capable of supporting stacks of sheets of a plurality of length and width dimensions, sheet width and length dimension representing members on the cassette, each independently movable to a plurality of positions representing a plurality of sheet width and length dimensions which are automatically positioned to represent the sheet width and sheet length dimensions of the stack of sheets on the platform with their position being detected by detectors on the main apparatus and a controller to determine the length and width dimensions of the copy sheets in the cassette thereby enabling the apparatus to automatically select the correct cassette to supply sheets for a printing operation. In a preferred embodiment a binary code is provided which represents the sheet length and width which is decoded by the controller.
摘要:
Apparatus for sorting sheets wherein the individual bins in the sorter are supported in the frame member in cantilevered fashion about only one edge and are open and unsupported in any other position. Each bin has plural means to movably support the bin in the frame comprising at least two support members slidingly engagable with the frame and sufficiently vertically spaced apart to prevent equilibrium when a coefficient of friction between the support means and the frame is at least 0.3 and a friction force between the support means and the frame is less than the weight of the bin, and further including a C-cam to sequentially vertically move said bins in the frame past a sheet entrance position.
摘要:
Automatic pre-collation document copying in which the documents are loaded upon, and automatically recirculated by, an elongate windable document holding web. A spaced pair of oppositely wound scrolls of the web wind up documents loaded onto the web, where these documents are retained between the turns of the web on both of the scrolls during the copying operation. The web has a minor intermediate unwound segment extending between the two web scrolls where the documents are intermittently exposed for copying by appropriate optical systems for projecting the document images onto a xerographic drum or belt or other imaging surface. A drive is provided for recirculatingly winding and unwinding the web between one web scroll and the other so as to recirculatingly expose, in sequence, the individual documents on the web as they appear on the unwound intermediate web segment. The documents are thereby exposed in the pre-collated order in which they are loaded onto the web, or/and the reverse to produce correspondingly pre-collated copy sets. A document loading guide is movable into a document loading position adjacent the intermediate segment of the web when one web scroll is repositioned into a document loading position.