Image recording apparatus inhibiting recording of abnormally-fed sheets

An image recording apparatus for recording onto a recording medium an original on which is disposed information for distinguishing the original, comprising:

• conveying means for conveying the original along a predetermined conveying path;
• recording means arranged along the conveying path, for recording an image on said original onto a recording medium;
• detection means for detecting a thickness and a length of the original being fed by said conveying means, said detection means being disposed on an upstream side of said recording means with respect to an original conveying direction;
• memory means for storing a reference value which corresponds to a thickness and a length of a sample original detected by said detection means;
• reading means, disposed between said recording means and said detecting means along the conveying path, for reading the distinguishing information disposed on the original;
• first judging means for judging, through comparison of the reference value stored in said memory means and the original's thickness and length detected by said detecting means, whether the original is conveyed normally or not;
• second judging means for judging whether said reading means reads the distinguishing information normally or not;
• and
• control means for controlling said recording means to cause (1), when said first judging means judges the abnormal conveying state or when said second judging means judges the abnormal reading state, said recording means not to record the original, and (2), when said first judging means judges the normal conveying state and said second judging means judges the normal reading state, said recording means to record the original.