Abstract: In a precollation copying apparatus with a recirculating document handler (RDH) in which a set of plural original document sheets is placed and normally plurally recirculated and copied once per circulation at the copier imaging station to produce a selected plural number of precollated copy sheet sets therefrom in a normal copy sheet output path, the improvement including a selectable alternative copy sheet path for feeding copy sheets from said normal copy sheet output path of said copier into an input station of said RDH with a selectably actuatable copy sheet output path deflector diverting a first set of copy sheets made from original document sheets into said alternative copy sheet path; and wherein the RDH automatically ejects the original document sheets without circulating them after they have been copied only once, and then the RDH automatically plurally recirculates the set of copy sheets in lieu of and as if they were original document sheets to copy the remainder of the selected number of copy se

Abstract: An apparatus 20 and method for recirculating document sheets to and from the imaging station 23 of a copier 10, with seriatim feeding and inverting of a set of individual conventional flimsy document sheets unescorted (without a carrier) to and from a stack of document sheets loaded in a stack support 22 overlying the imaging station 23, to provide for properly collated output copy sets from the copier, with loading the stack of document sheets face-up in said stack support in normal forward serial page order, feeding 28 the document sheets so loaded from one end of the top of said stack seriatim in forward serial page order for copying, and restacking 70 the copied document sheets seriatim on the bottom of the opposite end of the same stack in the same order, to provide continuous document sheet recirculation in said forward serial page order. The restacking preferably includes intermittent lifting 72 of the stack from one end, a vacuum belt sheet transport 74 and air flotation 76 of the stack.

Abstract: A sheet reversing mechanism having drive rolls independently activated for driving sheets into and out of a sheet reversing station at different rates. A first shaft supports a drive roll engaging an idler roll supported on a second shaft and a drive roll supported on the second shaft engages an idler roll supported on a third shaft. The diameters of the idler roll and the drive roll on the second shaft are different providing corrugations in sheets driven out of the reversing station.

Abstract: A sheet feeding apparatus and process wherein a movable member having a sheet receiving surface on its outer periphery includes a cavity. A supply of sheet material is supported within the cavity and feeding means are provided for feeding the sheet material outwardly from the cavity for application to the surface of the movable member. Preferably the sheet receiving surface comprises an electrostatic imaging surface. The process and apparatus may be applied to reproducing machines and processes for forming images on a single side of a sheet; on both sides of a sheet in a single pass; or for forming plural images in superimposed registration on a sheet.