Abstract: An electronic reprographic printing system for printing on output sheets of a print job, wherein a set of electronic page images is created, such as by scanning a set of original documents, storing the electronic page images in memory, and wherein certain images are variably shifted on the output sheets. The amount of image shift is dependent upon the size dimensions of the original documents and the size dimensions of the output sheets. This size dependent shifting allows for printing onto output sheets of varying sizes, or scanning from original documents of different sizes, such as from different scanning modes. The variable image shift is particularly useful for printing on tabs where the original documents are all of a standard size, and the images are specially shifted onto the tabs during printing.

Abstract: An electronic printer with a scanner for scanning the document pages of a job and converting the document images scanned to pixels, a printer for making prints of the documents from the pixels in accordance with job programming instructions, the scanner and printer operating asynchronously with respect to one another, and interruption of a job to process a special job is effected by interrupting the job currently being scanned by the scanner to scan the special job while continuing printing of other jobs in the print queue, and when the special job is ready, interrupting the job being printed to print the special job while resuming scanning of the interrupted job, and then continuing the printing of the interrupted job upon completion of the special job.

Abstract: A method and apparatus for handling software object faults in an electronic reprographic system for scanning and synchronously or asynchronously processing and printing a plurality of jobs are described. The system is monitored for the occurrence of software object faults in a job, and when such faults are identified, the operator is informed of such software object faults prior to processing of the object. The system is provided with the means to process another object without operator intervention prior to correction of the faulted object, and to proceed with processing the faulted object after correction of the fault.

Abstract: An electronic printer with a scanner for scanning the document pages of a job and converting the document images scanned to pixels, a printer for making prints of the documents from the pixels in accordance with job programming instructions, the scanner and printer operating asynchronously with respect to one another, and proofing of one or more pages of a job is effected by interrupting the job currently being scanned by the scanner to scan the proof job while continuing printing of other jobs in the print queue, and when the proof job is ready, interrupting the job being printed to print the proof job while resuming scanning of the interrupted job.