The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 2015
Filed:
Jul. 18, 2013
Toshiyuki Kabata, Kanagawa, JP;
Momoko Shionoiri, Kanagawa, JP;
Masato Iio, Kanagawa, JP;
Tsuyoshi Asami, Kanagawa, JP;
Toshiyuki Kabata, Kanagawa, JP;
Momoko Shionoiri, Kanagawa, JP;
Masato Iio, Kanagawa, JP;
Tsuyoshi Asami, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A color image forming method, including: forming electrostatic latent image on electrostatic latent image bearing member; developing the image to form visible image with at least two toners containing releasing agent and selected from black, magenta, cyan and yellow toners; transferring the visible image to recording medium; fixing the transferred image thereon with fixing member having no releasing agent on surface thereof; and forming overcoat layer on the fixed image by polymerizing overcoat composition, wherein when lightness—L, chromaticity—aand chromaticity—baccording to L*a*b* color system of the fixed image formed with the at least two toners and lightness—L, chromaticity—aand chromaticity-bof the fixed image after the overcoat composition is dropped at 0.4 mg/cmfrom height of 10 mm above the fixed image and the overcoat composition is removed after 10 seconds have passed are applied to the following formula (1), color difference ΔE* is 3.0 to 30.0:Δ*=[(2−1)+(2−1)+(2−1)]  (1).