Image forming apparatus capable of being fitted with offset stacker, copying machine equipped with the image forming apparatus, and method of controlling the image forming apparatus
AssigneeToshiba Tec Kabushiki Kaisha
InventorHiroyuki Shiraishi
Life of this patent
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Abstract
The CPU detects an error in the timing of offset stacking by the offset stacker on the basis of the time when the offset motor signal for driving the offset motor is generated and the time when the initial position sensor is turned ON. Upon detecting an error in the timing of offset stacking, the CPU forces the image formation by the image forming unit and the paper transportation by the paper transporting motor to stop, thus preventing paper from being introduced into the offset stacker.
Claims7
An image forming apparatus which forms an image on a predetermined paper form transported by a paper transport mechanism on a predetermined paper path using image forming means and can be fitted with an offset stacker which, in discharging paper forms after being formed with images into a discharge tray, offset stacking the image-formed paper forms in the discharge tray, comprising:
- error detection means for detecting an error in the timing of offset stacking by the offset stacker;
- and
- forced stopping means responsive to the error detection means, for forcing the paper transport mechanism and the image forming means to stop their operation when an error is detected by the error detection means.
A copying machine which includes an image scanner for scanning an image on each original and an image forming apparatus for forming an image scan by the image scanner on a paper form transported by paper transport means on a predetermined paper path using image forming means and can be fitted with an offset stacker which, in discharging paper forms after being formed with images into a discharge tray, offset stacking the image-formed paper forms in the discharge tray, comprising:
- error detection means for detecting an error in the timing of offset stacking by the offset stacker;
- and
- forced stopping means responsive to the error detection means, for forcing the paper transport means and the image forming means to stop their operation when an error is detected by the error detection means.
A method of controlling an image forming apparatus which forms an image on a predetermined paper form transported by a paper transport mechanism on a predetermined paper path using image forming means and can be fitted with an offset stacker which, in discharging paper forms after being formed with images into a discharge tray, offset stacking the image-formed paper forms in the discharge tray, comprising the steps of:
- detecting an error in the timing of offset stacking by the offset stacker;
- and
- forcing the paper transport mechanism and the image forming means to stop their operation when an error in the timing of offset stacking is detected.
Dependencies are inferred from the claim text.