Patent ID: 6400912
Filing Date: 2002-06-04
Classification: G03G,H04N

Abstract:
An image forming apparatus comprising:image forming means for forming images by using developer; supplying means for feeding image formation media toward the image forming means; transporting means for transporting the image formation media that have been fed; transferring means for transferring developer images formed on the image forming means onto the image formation media; identifying means for performing identification of the type of the image formation media; transportation speed adjusting means for performing adjustment of the speed of transportation by the supplying means for the image formation media, the adjustment being performed according to outputs from the identifying means; and identification reference adjusting means for adjusting a reference value E used for identification of the image formation media, the identification being performed by the identifying means, wherein a sequence for adjustment of the reference value E is executed by the identification reference adjusting means, and identification is thereby implemented for the type of adjustment sequences that are executed by the transportation speed adjusting means for the speed of transportation of the image formation media and the type of the image formation media, wherein the identification reference adjusting means executes the adjustment of the reference value according to a result of identification executed by the identifying means for a reference value adjustment chart, wherein an adjustment value Em of the reference value E for the identifying means is defined by using an image-section level Ew and an non-image level Eb and according to Em=(Ew+Eb)/X, the image-section level Ew and the non-image level Eb being obtained by sensing of an image section and by sensing of a non-imaging section, respectively, of the reference value adjustment chart outputted by the identifying means, and wherein the aforementioned X is an experience value &agr;.