Image forming apparatus and computer readable medium

1. An image forming apparatus comprising:

a plurality of paper supplying trays that stores a paper to form an image;

an image forming unit that forms the image on the paper supplied from the paper supplying tray;

a cover to be opened by an operator in order to take away the paper getting jammed in the image forming unit;

a cover opening/closing detecting unit that detects an operation for opening/closing the cover by the operator;

a paper supplying tray opening/closing detecting unit that detects an operation for opening/closing any of the plurality of paper supplying trays;

a paper jam detecting unit that detects a paper jam in at least one place in a paper transporting path through which the paper is transported, and the paper jam detecting unit has a detecting result holding unit that puts up a detecting flag corresponding to the place where the paper jam is detected so as to hold a detecting result from the paper jam detecting unit;

a confirming unit that confirms a first detection of the operation for opening/closing the cover through the cover opening/closing detecting unit after the paper jam is detected by the paper jam detecting unit or a second detection of the operation for opening/closing the paper supplying tray through the paper supplying tray opening/closing detecting unit;

a paper jam release deciding unit that decides whether the paper jam in the detecting place is released or not after the confirmation of the first or second detection through the confirming unit; and

a completion control unit that controls to complete a paper jam processing based on the decision that the paper jam in all of the places in the paper transporting path is released through the paper jam release deciding unit.

2. The image forming apparatus according to claim 1 , wherein the release deciding unit invalidates the detecting flag corresponding to a place in which the paper jam is decided to be released.

3. The image forming apparatus according to claim 1 , further comprising:

at least one paper detecting unit that detects a presence of the paper in the paper transporting path, wherein

the paper jam detecting unit detects the paper jam in at least one place based on information detected by the at least one paper detecting unit.

4. The image forming apparatus according to claim 1 , wherein the paper jam release deciding unit decides whether the paper jam is released or not based on the information detected by the paper detecting unit.

5. The image forming apparatus according to claim 1 , wherein the paper jam detecting unit displays, on a displaying portion, information about the detected paper jam.

6. The image forming apparatus according to claim 5 , further comprising a plurality of paper detecting unit that detects a presence of the paper in the paper transporting path,

the paper jam detecting unit displays, on the displaying portion, information about the paper jam based on the paper detecting unit in a place positioned on a downstream side of the paper transporting path when the paper jam in a plurality of places based on the paper detecting unit is detected.

7. The image forming apparatus according to claim 1 , wherein the paper jam detecting unit determines whether the paper arrives at the paper jam detecting unit within a predetermined time.

8. The image forming apparatus according to claim 1 , wherein the paper jam detecting unit determines whether the paper is continuously detected by the paper jam detecting unit.