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:
Jun. 10, 1997
Filed:
Jul. 11, 1996
Tsuyoshi Uchida, Hachioji, JP;
Kunio Akimoto, Hachioji, JP;
Konica Corporation, , JP;
Abstract
Disclosed is a toner for developing an electrostatic latent image, comprising a binder resin, a colorant and a releasing agent, wherein said toner has: (1) a storage modulus (G') having a falling starting temperature of 45.degree. to 65.degree. C., when a visco-modulus of said toner is measured by a rheometer, (2) a first inclination represented by (1/3).times.(log (.eta.'.sub.121)-log (.eta.'.sub.118)) is -0.065 to -0.035 at 120.degree. C. wherein said log (.eta.'.sub.121) represents a common logarithm of a fusion viscosity (.eta. ) of said toner at 121.degree. C., said log (.eta.'.sub.118) represents a common logarithm of a fusion viscosity (.eta. ) of said toner at 118.degree. C., and said first inclination represented by (1/3).times.(log (.eta.'.sub.121)-log (.eta.'.sub.118)) represents an inclination of a tangent at 120.degree. C., when said logarithm of said fusion viscosity (.eta. ) is plotted as a function of degree of Celsius, and (3) a second inclination represented by (1/3).times.(log (G'.sub.200)-log (G'.sub.197)) is not less than -0.025 at 200.degree. C., wherein said log (G'.sub.200) represents a common logarithm of said storage modulus (G') at 200.degree. C., said log (G'.sub.197) represents a common logarithm of said storage modulus (G') at 197.degree. C., and said second inclination represented by (1/3).times.(log (G'.sub.200)-log (G'.sub.197)) represents an inclination of a tangent at 200.degree. C., when said logarithm of said storage modulus (G') is plotted as a function of degree of Celsius.