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US 4,733,281 AGranted
Transport control device for an image recording apparatus
AssigneeCanon Kabushiki Kaisha
InventorsKenji Yoshinaga, Kenji Takeda
Life of this patent
Estimating the term…
Abstract
A copying machine, or a similar image recording apparatus, does not terminate the image forming process, even when an abnormality in sheet transportation is detected, until the process is completed, and a sheet bearing the image prepared in this image forming process is transported after jammed sheets are removed, so that unnecessary waste of imaging sheets can be avoided.
Claims11
An image recording apparatus comprising:
- support means for supporting a sheet material;
- recording means for recording an image on a sheet material supported on said support means;
- transport means for transporting a sheet material to said support means and transporting a sheet material after image recording from said support means;
- detection means for detecting an abnormality in the transportation of a sheet material transported by said transport means at a position downstream of said support means;
- and
- control means adapted, in case an abnormality in the transportation of a first sheet material is detected by said detection means in the course of a recording operation by said recording means for a second sheet material, to control said transport means so as to stop the transport operation for the first sheet material and to so control said recording means as to continue the recording operation for the second sheet material.
3 more elements
An image recording apparatus comprising:
- latent image forming for forming an electrostatic latent image on a recording member;
- developing means for developing the electrostatic latent image formed on said recording member;
- transfer means for transferring the image developed by said developing means, onto a sheet material;
- transport means for transporting a sheet material to said transfer means and transporting a sheet material after image transfer from said transfer means;
- detection means for detecting an abnormality in the transportation of sheet materials to be transported by said transport means at a position downstream of said transfer means;
- and
- control means adapted, in case an abnormality in the transportation of a first sheet material is detected by said detection means in the course of an image transfer operation by said transfer means for a second sheet material, to control said transport means so as to stop the transport operation for the first sheet material and to control said transfer means so as to continue the image transfer operation for the second sheet material.
4 more elements
An image forming apparatus comprising:
- support means for supporting a sheet material;
- recording means for recording an image on a sheet material supported by said support means;
- transport means for transporting a sheet material to said support means and transporting a sheet material therefrom after image recording;
- fixing means for fixing the image formed on the sheet transported by said transport means;
- first control means for continuing, in case of an abnormality in the transportation of a first sheet material transported by said transport means at a position downstream of said support means, an image forming operation in progress for a second sheet material on said support means until said image forming operation is completed;
- and
- second control means for causing said second sheet material to wait in a pre-determined area until said fixing means reaches a pre-determined fixing temperature, at a time of resumption of said transport operation after said abnormality.
4 more elements
Dependencies are inferred from the claim text.