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:
Jul. 31, 2001
Filed:
Mar. 27, 1998
Shohichi Sugimoto, Shizuoka, JP;
Shinichi Kuramoto, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image formation method for forming a full-color image includes the step of superimposing four yellow, magenta, cyan and black toner images which are respectively obtained by developing four latent electrostatic images, which respectively correspond to the four yellow, magenta, cyan and black toner images, with a yellow toner, a magenta toner, a cyan toner and a black toner, wherein a gradient a,of a yellow glossiness per unit amount of the yellow toner (mg/cm,) deposited on a transfer sheet, a gradient a,of a magenta glossiness per unit amount of the magenta toner (mg/cm,) deposited on the transfer sheet, and a gradient a,of a cyan glossiness per unit amount of the cyan toner (mg/cm,) deposited on the transfer sheet are in a range of 0.8 a to 1.2 a, and a gradient a,of a black glossiness per unit amount of the black toner (mg/cm,) deposited on the transfer sheet is in a range of 0.4 a to 0.7 a, in which a=(a,+a,+a,)/3.