Claims
- 1. A printing press with a sheet-turning-over-mechanism for turning over a printing sheet, enabling the printing press to be selectively operable in a one-sided printing mode and a double-sided printing mode through a mode switching operation, comprising:a controller including a computing device with a CPU for performing said mode switching operation according to a program executable by said computing device and a memory configured such that, when a failure stops any one of steps of a mode switching operation for switching the printing press from the one-sided printing mode to the double-sided printing mode or vice versa, said memory stores the information representative of a state of the mode switching operation at the moment of the stop due to the failure, and when a normal operable state is restored from the failure, said computing device resumes the mode switching operation from a step of the mode switching operation indicated by the operational state stored in said memory.
- 2. The printing press with a sheet-turning-over-mechanism according to claim 1, wherein said controller comprises:failure detecting means for detecting a failure in the a sheet-turning-over-mechanism during the mode switching operation; operation stopping means for stopping the mode switching operation at the time of the detection of the failure by the failure detecting means; memory for storing the information representative of a state of the mode switching operation at the time when the mode switching operation has been stopped by the operation stopping means; and operation resuming means which, when the sheet-turning-over-mechanism is restored to a normal operable state, resumes the mode switching operation from a step of the mode switching operation indicated by the operational state read out from the memory.
- 3. The printing press according to claim 2, wherein the information representative of the operational state includes step numbers respectively assigned to the steps of the mode switching operation.
- 4. The printing press according to claim 1, wherein the information representative of the operational state includes step numbers respectively assigned to the steps of the mode switching operation.
- 5. A printing press with a sheet-turning-over-mechanism for turning over a printing sheet, enabling the printing press to be selectively operable in a one-sided printing mode and a double-sided printing mode through a mode switching operation, comprising:a controller including a computing device with a CPU for performing said mode switching operation according to a program and a memory so that when a failure stops any one of steps of a mode switching operation for switching the printing press from the one-sided printing mode to the double-sided printing mode or vice versa, said memory stores the information representative of a state of the mode switching operation at the moment of the stop due to the failure, and said computing device returns the sheet-turning-over-mechanism to a state before the start of a step of the mode switching operation indicated by the operational state stored in said memory and resumes the mode switching operation from said step.
- 6. A printing press with a sheet-turning-over-mechanism for turning over a printing sheet, enabling the printing press to be selectively operable in a one-sided printing mode and a double-sided printing mode through a mode switching operation, comprising:a controller including a computing device with a CPU for performing said mode switching operation-according to-a program and a memory -for storing the information representative of a state of the printing press before a mode switching operation for switching the printing press from the one-sided printing mode to the double-sided printing mode or vice versa is started, in which when a failure stops any one of steps of the mode switching operation, said computing device returns the printing press to the state before the mode switching operation is started, said state being stored in said memory.
- 7. A method for improving the operation of a printing press, said printing press including a control system and capable of operating in a one-sided printing mode and a double-sided printing mode, said control system including a memory and a computing device capable of performing a mode-switching operation between said one-sided and said double-sided modes, including the steps of:detecting a failure in a particular step in a series of steps in said mode-switching operation, wherein said failure stops said particular step; automatically storing information representative of a state of said mode switching operation at the moment of said failure in said memory; and resuming said mode switching operation in said series of steps after restoring a normal operable state by recalling said information representative of a state.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2001-157099 |
May 2001 |
JP |
|
CROSS-REFERENCE TO RELATED APPLICATIONS
This Application claims priority under 35 USC §119 of Japanese Patent Application No. 2001-157099 filed on May 25, 2001, which is incorporated herein by reference in its entirety, and is related to Japanese Patent Application No. 2002-141789 filed on May 16, 2002, incorporated herein by reference.
US Referenced Citations (4)
Foreign Referenced Citations (1)
Number |
Date |
Country |
04085041 |
Mar 1992 |
JP |