Image forming apparatus and image forming method

An image forming method comprising:

• a first step of forming an image on one side of each of a plurality of recording mediums based on image data edited in predetermined output order, and temporarily stacking the plurality of recording mediums in a stacking section, the recording mediums being staked in a reverse state;
• a second step of forming an image on another side of each of the recording mediums stacked in the reverse state based on the image data in predetermined timing, and ejecting the recording mediums outside;
• and
• a third step of executing the first step again in a case where no recording medium remains in the stacking section before all images corresponding to the image data are formed on the plurality of recording mediums.

An image forming apparatus comprising:

• image forming means for forming an image on a recording medium based on image data;
• stacking means for temporarily stacking the recording medium in a reverse state, an image being formed on one side of the recording medium by the image forming means;
• supplying means for supplying the recording medium stacked in the stacking means to the image forming means in predetermined timing;
• sensing means for sensing whether the recording medium is present in the stacking means;
• and
• control means having a double-sided image forming mode in which the image forming means forms images corresponding to image data on first and second sides of each of a plurality of recording mediums, said control means executing the double-sided image forming mode once again in a case where the sensing means senses that no recording medium remains in the stacking means before all the images corresponding to the image data are formed on the recording mediums stacked in the stacking means in the double-sided image forming mode.

An image forming apparatus comprising:

• image formation means for forming an image on recording mediums based on image data;
• stacking means for temporarily stacking the recording mediums, each bearing the image formed on one side thereof by the image formation means, the recording mediums being stacked in a reverse state;
• supplying means for supplying the recording mediums stacked in the stacking means to the image formation means in predetermined timing;
• sensing means for sensing whether a recording medium is present in said stacking means;
• ejecting means for ejecting the recording mediums outside;
• and
• control means having a double-sided image forming mode in which the image forming means forms images corresponding to image data on first and second sides of each of a plurality of recording mediums, said control means controlling the ejecting means to eject a recording medium outside in a case where the sensing means senses that the recording medium is present in the stacking means when all images corresponding to the image data have been formed on the plurality of recording mediums stacked in the stacking means in the double-sided image forming mode, and controlling the image forming means to form images again corresponding to the same image data as that applied in the double-side image forming mode.