Image-forming apparatus and image-forming method

An image-forming apparatus for forming a multi-color toner image by superimposing a plurality of colored toners, the image-forming apparatus performing:

• an image forming step of forming a transparent toner image between a transfer material and the multi-color toner image by developing and transferring transparent toner corresponding to the multi-color toner image;
• and
• a fixing step of fixing the multi-color toner image and the transparent toner image on the transfer material,
• wherein a storage elastic modulus G′(T)(To) at a saturated temperature in a fixing nip of the transparent toner at a time of the fixing step is higher than a storage elastic modulus at a saturated temperature in the fixing nip of each of the colored toners at the time of the fixing step;
• and
• wherein the storage elastic modulus G′(T)(To) at the saturated temperature in the fixing nip of the transparent toner at the time of the fixing step is 10×104 dyn/cm2 or more and 1.0×106 dyn/cm2 or less.

An image-forming method of forming a multi-color toner image by superimposing a plurality of colored toners, the image-forming method comprising:

• an image-forming step of forming a white toner image between a transfer material and the multi-color toner image by developing and transferring white toner corresponding to the multi-color toner image;
• and
• a fixing step of fixing the multi-color toner image and the white toner image on the transfer material,
• wherein a storage elastic modulus G′(T)(W) at a saturated temperature in a fixing nip of the white toner at a time of the fixing step is higher than a storage elastic modulus at a saturated temperature in the fixing nip of each of the colored toners at the time of the fixing step;
• and
• wherein the storage elastic, modulus G′(T)(W) at the saturated temperature in the fixing nip of the white toner at the time of the fixing step is 1.0×104 dyn/cm2 or more and 10×106 dyn/cm2 or less.

An image-forming method of forming a multi-color toner image by superimposing a plurality of colored toners, the image-forming method comprising:

• an image-forming step of forming a transparent toner image between a transfer material and the multi-color toner image by developing and transferring transparent toner corresponding to the multi-color toner image;
• and
• a fixing step of fixing the multi-color toner image and the transparent toner image on the transfer material,
• wherein a storage elastic modulus G′(T)(To) at a saturated temperature in a fixing nip of the transparent toner at a time of the fixing step is higher than a storage elastic modulus at a saturated temperature in the fixing nip of each of the colored toners at the time of the fixing step;
• and
• wherein the storage elastic modulus G′(T)(To) at the saturated temperature in the fixing nip of the transparent toner at the time of the fixing step is 1.0×104 dyn/cm2 or more and 1.0×106 dyn/cm2 or less.