Page level recovery on print jobs for production printing systems

A method of performing a recovery process in a print controller of a production printing system, wherein the print controller includes a job storage system that receives and stores print jobs from at least one host system, and a print data path from the job storage system to at least one print engine of the printing system, wherein the print data path includes at least one component operable to process the print jobs to generate sheetside images based on print settings for the printing system for marking by the at least one print engine to a print media, the method comprising:

• detecting a redrive event during printing of one of the print jobs, wherein the redrive event comprises a change to print settings for the printing system that alters sheetside images for print jobs;
• identifying the one print job in the print data path that was interrupted by the redrive event;
• identifying a target page of the identified print job that is being marked to the print media upon detection of the redrive event;
• purging sheetside images for the identified print job from the print data path;
• and
• rescheduling the identified print job for processing in the print data path so that the next sheetside image generated for marking includes the target page of the identified print job.

A non-transitory computer readable medium tangibly embodying programmed instructions which, when executed by a computer system, are operable to execute a method of performing a recovery process in a print controller of a production printing system, wherein the print controller includes a job storage system that receives and stores print jobs from at least one host system, and a print data path from the job storage system to at least one print engine of the printing system, wherein the print data path includes at least one component operable to process the print jobs to generate sheetside images based on print settings for the printing system for marking by the at least one print engine to a print media, the method comprising:

• detecting a redrive event during printing of one of the print jobs, wherein the redrive event comprises a change to print settings for the printing system that alters sheetside images for print jobs;
• identifying the one print job in the print data path that was interrupted by the redrive event;
• identifying a target page of the identified print job that is being marked to the print media upon detection of the redrive;
• purging sheetside images for the identified print job from the print data path;
• and
• rescheduling the identified print job for processing in the print data path so that the next sheetside image generated for marking includes the target page of the identified print job.

A print controller for a production printing system, the print controller comprising:

• a job storage system operable to receive print jobs from at least one host system, and to store the print jobs;
• a print data path from the job storage system to at least one print engine of the printing system, the print data path comprising:
• a raw data preprocessing system operable to receive raw data for print jobs from the job storage system, to segment the raw data of the print job into segmented pages, and to define raw sheetsides based on the segmented pages;
• an interpreter system operable to receive the raw sheetsides from the raw data preprocessing system, and to render the raw sheetsides to generate sheetside bitmaps;
• and
• a bitmap processing system operable to receive the sheetside bitmaps from the interpreter system, and to forward the sheetside bitmaps to the at least one print engine for marking to a print media;
• and
• a redrive system operable to detect a redrive event during printing of one of the print jobs, wherein the redrive event comprises a change to print settings for the printing system that alters a generation of sheetside images for print jobs, to identify the one print job in the print data path that was interrupted by the redrive event, to identify a target page of the identified print job that is being marked to the print media, to purge sheetside bitmaps for the identified print job from the print data path, and to reschedule the identified print job for processing in the print data path so that the next sheetside bitmap generated for marking includes the target page of the identified print job.