Image forming apparatus and image forming method
AssigneeOki Electric Industry Co., Ltd.
InventorManami Hiraide
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Abstract
An image forming apparatus includes a first image forming part that forms a first image on a print medium using a photoluminescent developer containing a photoluminescent pigment; a second image forming part that forms a second image on the print medium using a coloring developer containing a coloring material; and a lamination part that laminates the first image and the second image on the print medium, wherein a viscoelastic phase angle (A) of the coloring developer and a viscoelastic phase angle (B) of the photoluminescent developer when measured at 125[° C.] using a viscoelasticity measuring device satisfy follow: 21.1[°]≤(A·B)≤31.6[°]. where A means a viscoelastic phase angle of the coloring developer, B means a viscoelastic phase angle of the photoluminescent developer.
Claims12
An image forming apparatus, comprising:
- a first image forming part that forms a first image on a print medium using a photoluminescent developer containing a photoluminescent pigment;
- a second image forming part that forms a second image on the print medium using a coloring developer containing a coloring material;
- and
- a lamination part that laminates the first image and the second image on the print medium, wherein
- a viscoelastic phase angle (A) of the coloring developer and a viscoelastic phase angle (B) of the photoluminescent developer when measured at 125[° C.] using a viscoelasticity measuring device satisfy follow:
- 21.1[°]≤(A−B)≤31.6[°].
- where
- A means a viscoelastic phase angle of the coloring developer,
- B means a viscoelastic phase angle of the photoluminescent developer.
Dependencies are inferred from the claim text.