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United States Patent | 4,317,629 |
Kuseski | March 2, 1982 |
Job recovery method and system for generating complete sets of copies and providing billing information with respect thereto. Job recovery is automatically effected after a jam occurs with respect to copy sheets by maintaining counts of sheets reaching the exit pocket and retained in the duplex tray for determining therefrom images lost due to the jam and responsive thereto generating replacement copies. Counts are also maintained for determining when copying of each set is complete and for billing purposes with the count for billing purposes reflecting only delivered copies with no additions being made for replacement copies generated due to lost images. For effecting job recovery due to jams occurring during imaging of duplex copies, replacement sheets are generated immediately after each jam to replace those sheets lost due to the jam by determining the number of pages to be printed, dividing this number by two, and subtracting therefrom the count of sheets in the duplex tray and in the exit pocket, with this determination being then used to control generation of first side images on sheets needed for replacement purposes with said sheets being then conveyed to the duplex tray so that the resulting duplex copy generation is complete when reaching the exit pocket.
Inventors: | Kuseski; Roger E. (Longmont, CO) |
Assignee: |
International Business Machines Corporation
(Armonk,
NY)
|
Appl. No.: | 06/118,361 |
Filed: | February 4, 1980 |
Current U.S. Class: | 355/24 ; 377/8; 399/374 |
Current International Class: | G03G 15/00 (20060101); G03G 21/02 (20060101); G03G 15/23 (20060101); G03B 027/32 (); G03B 027/52 (); G06F 001/00 () |
Field of Search: | 355/14R,14C,14CU,14SH,24,50 364/900,2MSFile,9MSFile 235/151.22,92SB 340/324B 360/15,16 |
3588472 | June 1971 | Glaster et al. |
3682544 | August 1972 | Glaser |
3944794 | March 1976 | Reehil et al. |
4086658 | April 1978 | Finlay |
4099254 | July 1978 | Andrews et al. |
4130354 | December 1978 | Steiner |
4163897 | August 1979 | Hubbard et al. |
4206996 | June 1980 | Clark et al. |