Image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorAtsushi Wada
Life of this patent
Estimating the term…
Abstract
An engine controller 21 discriminates defective conveyance of a sheet material 2 on the basis of information regarding the presence or absence of the sheet material 2 which is outputted from a TOP sensor 7 and an ejection sensor 17 (S202), discriminates to which one of a plurality of types of defective conveyance the defective conveyance relates, and transmits information regarding the defective conveyance to an image controller 23. If the information regarding the defective conveyance received from the engine controller 21 is information showing the occurrence of a feed delay jam, the image controller 23 transmits a jam clear command to cancel the feed delay jam to the engine controller 21.
Claims12
An image forming apparatus which forms an image onto recording paper, comprising:
- an image processing control unit for processing image information from an external apparatus;
- an image forming control unit for controlling said image forming apparatus on the basis of a control signal from said image processing control unit;
- a conveying unit for conveying the recording paper;
- and
- a detecting unit for outputting information regarding the presence or absence of the recording paper which is conveyed by said conveying unit,
- wherein said image forming control unit discriminates defective conveyance of said recording paper on the basis the information regarding the presence or absence of said recording paper which is outputted from said detecting unit, discriminates which of a plurality, of types of defective conveyance said defective conveyance is, and transmits information regarding the defective conveyance to said image processing control unit, and
- when the information regarding said defective conveyance which is received from said image forming control unit is information showing the occurrence of specific defective conveyance, said image processing control unit transmits a defective conveyance cancelling signal to cancel said specific defective conveyance to said image forming control unit.
An image forming system having an image forming apparatus which forms an image onto recording paper and an input apparatus which transmits image information to said image forming apparatus, comprising:
- an image processing control unit for processing the image information from said input apparatus;
- an image forming control unit for controlling said image forming apparatus on the basis of a control signal from said image processing control unit;
- a conveying unit for conveying the recording paper;
- and
- a detecting unit for outputting information regarding the presence or absence of the recording paper which is conveyed by said conveying unit,
- wherein said image forming control unit discriminates defective conveyance of said recording paper on the basis the information regarding the presence or absence of said recording paper which is outputted from said detecting unit, discriminates what of a plurality of types of defective conveyance said defective conveyance is, and transmits information regarding the defective conveyance to said image processing control unit, and
- when the information regarding said defective conveyance which is received from said image forming control unit is information showing the occurrence of specific defective conveyance and a predetermined instruction signal to cancel said specific defective conveyance is inputted from said input apparatus, said image processing control unit transmits a defective conveyance cancelling signal to cancel said specific defective conveyance to said image forming control unit.
A controller of an image forming apparatus which forms an image onto recording paper, comprising:
- a discriminating unit for discriminating whether a plurality of types of defective conveyance of recording paper which occurs in the image forming apparatus is a specific type of defective conveyance or not;
- an input unit to which an input signal to cancel said defective conveyance which occurs in the image forming apparatus is inputted;
- and
- a generating unit for generating a cancelling signal for cancelling said specific defective conveyance when said input signal is inputted to said input unit and when said discriminating unit determines the occurrence of said specific type of defective conveyance.
Dependencies are inferred from the claim text.