Patent ID: 6751424
Filing Date: 2004-06-15
Classification: G03G

Abstract:
An image-forming method comprising:a developing step of developing an electrostatic latent image held on an image-bearing member, by means of a toner to obtain a toner image; a transfer step of transferring the toner image to a recording medium; and a fixing step of heating the toner image having been transferred onto the recording medium, to fix the former to the latter; and having at least: a low-speed mode PS1 in which images are formed at a low speed; and a high-speed mode PS2 in which images are formed at a high speed; so as to be able to form images at different speeds; said recording medium having a gloss value (60-degree gloss) represented by G0 and said toner being laid on said recording medium in a quantity ranging from 0.05 mg/cm2 or more to 1.3 mg/cm2 or less, under conditions of which; (i) when a recording medium having a high gloss (G0>40) is used, an image is formed at a low-speed mode PS1 in which the process speed is from 20 mm/sec. or more to less than 130 mm/sec. and, where the maximum value and minimum value of gloss value of the image having been fixed are represented by Gmax1 and Gmin1, respectively, the Gmax1 and the Gmin1 satisfy the following expressions: Gmax1&lE;G0+40 and G0âˆ’25; and (ii) when a recording medium having a low gloss (0&lE;G0&lE;40) is used, an image is formed at a high-speed mode PS2 in which the process speed is from 130 mm/sec. or more to 600 mm/sec. or less and, where the maximum value and minimum value of gloss value of the image having been fixed are represented by Gmax2 and Gmin2, respectively, the Gmax2 and the Gmin2 satisfy the following expressions: Gmax2&lE;G0+20 and Gmin2&gE;G0âˆ’15.