Abstract: A method of copying a document onto a receiver such as paper includes taking the characteristics of the receiver into account in selecting pigments for making the copy. The characteristics may be determined by scanning the receiver to determine its color, finish, texture, etc. If the characteristics are other than a given standard such as white, the pigments necessary to render the receiver area(s) white are determined. Concurrently, the pigments needed for copying the document onto the receiver are also determined. An image processor then generates copy pigment data from the receiver and document pigments and transmits the data to a print engine in the form of toner data. If the copy pigment data might produce too dark a copy, the data is modified uniformly to reduce pigment percentages.

Abstract: A method of copying a document onto a receiver such as paper includes taking the characteristics of the receiver into account in selecting pigments for making the copy. The characteristics may be determined by scanning the receiver to determine its color, finish, texture, etc. If the characteristics are other than a given standard such as white, the pigments necessary to render the receiver area(s) white are determined. Concurrently, the pigments needed for copying the document onto the receiver are also determined. An image processor then generates copy pigment data from the receiver and document pigments and transmits the data to a print engine in the form of toner data. If the copy pigment data might produce too dark a copy, the data is modified uniformly to reduce pigment percentages.

Abstract: A method and apparatus for registering a sheet member with an indicia on the surface of a moving member which comprises means for driving a sheet member substantially tangentially of the moving member and between the moving member and a linear image sensor which is disposed adjacent the surface of the moving member. The linear image sensor senses the leading edge of the sheet member and, as the moving member is driven, the linear image sensor senses the passage of the indicia on the surface thereof as the member travels therepast. The distance between the indicia and the leading edge of the sheet member is sensed and an error signal is generated representative of the distance. The sheet member driving means is regulated so as to reduce the error signal and the sheet is attached to the moving member when the error signal is reduced to a predetermined value.

Abstract: Apparatus and method of producing image edge enhancement in four-color printers. The true black color is aligned for printing between the cyan, magenta, and yellow colors. When a black edge is desired, process black and true black are both used to produce the pixels along the edge. Because the process and true black pixels are interleaved with each other along the edge, the effective resolution is doubled and the sharpness is enhanced along the edge.