公开(公告)号：US20190137899A1

公开(公告)日：2019-05-09

申请号：US16163046

申请日：2018-10-17

Applicant: Konica Minolta Inc.

Inventor： Hitomi MOTANI ,  Tomoko MINE ,  Kaori MATSUSHIMA

IPC: G03G9/087 ,  G03G9/08 ,  G03G9/097

CPC classification number: G03G9/08764 ,  G03G9/0804 ,  G03G9/0819 ,  G03G9/08791 ,  G03G9/08795 ,  G03G9/08797 ,  G03G9/0926 ,  G03G9/09708 ,  G03G9/09725

Abstract: An image forming method uses a color toner including a yellow toner, a magenta toner, a cyan toner, and a black toner. The image forming method includes a toner image forming step of forming a toner image by developing the color toner on an electrostatic latent image formed by charging and exposing a surface of an electrostatic latent image bearing member, a transfer step of transferring the toner image onto a recording medium to form a color toner image, and a fixing step of fixing the color toner image on the recording medium. Each toner contain at least a binder resin, a coloring agent, a release agent, and a layered silicate compound. The volume average particle diameter of each toner is 4 to 6 μm. The content of the aluminum element in each toner represented by the Net intensity by WDXRF analysis has a specific relationship.

公开(公告)号：US20190094732A1

公开(公告)日：2019-03-28

申请号：US16128612

申请日：2018-09-12

Applicant: Konica Minolta, Inc.

Inventor： Kaori MATSUSHIMA ,  Tomoko MINE ,  Hitomi MOTANI

IPC: G03G9/087 ,  G03G9/09 ,  G03G15/08 ,  G03G15/01

CPC classification number: G03G9/08755 ,  G03G9/08711 ,  G03G9/08782 ,  G03G9/0904 ,  G03G9/091 ,  G03G9/0918 ,  G03G9/09708 ,  G03G9/09716 ,  G03G9/09725 ,  G03G15/0121 ,  G03G15/08 ,  G03G15/09

Abstract: In an image forming method, a black toner and a color toner other than the black toner are used. The black toner and the color toner each include a binder resin including a polyester resin as a main component and a vinyl resin, a releasing agent, and an external additive. A content Vk % by mass of the vinyl resin relative to total mass of the binder resin included in the black toner, a content Vc % by mass of the vinyl resin relative to total mass of the binder resin included in the color toner, a content Wk % by mass of the releasing agent relative to the total mass of the binder resin included in the black toner, and a content Wc % by mass of the releasing agent relative to the total mass of the binder resin included in the color toner satisfy a specific relationship.

公开(公告)号：US20180129147A1

公开(公告)日：2018-05-10

申请号：US15799222

申请日：2017-10-31

Applicant: Konica Minolta, Inc.

Inventor： Yasuko UCHINO ,  Hitomi MOTANI ,  Tomomi OSHIBA

IPC: G03G9/09 ,  G03G9/087 ,  G03G9/08

CPC classification number: G03G9/0926 ,  G03G9/0819 ,  G03G9/08711 ,  G03G9/08755 ,  G03G9/08795 ,  G03G9/08797 ,  G03G9/0902 ,  G03G9/09708 ,  G03G9/09716 ,  G03G9/09725

Abstract: It is an object to suppress yellowing of a binder resin while obtaining an image with a high degree of whiteness and to suppress occurrence of image defects when printing at a high temperature and a high humidity.A toner for developing an electrostatic image, the toner including: white toner base particles containing a binder resin and titanium oxide having an average particle size of from 130 to 600 nm; and an external additive including strontium titanate.

公开(公告)号：US20170203581A1

公开(公告)日：2017-07-20

申请号：US15326595

申请日：2015-07-24

Applicant: Konica Minolta, Inc.

Inventor： Hideya MIWA ,  Takayuki ISHIKAWA ,  Ryuichi HIRAMOTO ,  Hitomi MOTANI

IPC: B41J11/00 ,  C09J5/06 ,  C09J133/12 ,  C09J133/06 ,  B32B7/14 ,  E04F13/07 ,  B32B15/12 ,  B32B15/082 ,  B32B15/14 ,  B32B27/30 ,  B32B37/12 ,  B32B37/00 ,  B41J2/01 ,  B32B5/02

CPC classification number: B41J11/002 ,  B32B5/022 ,  B32B7/14 ,  B32B15/082 ,  B32B15/12 ,  B32B15/14 ,  B32B27/304 ,  B32B37/025 ,  B32B37/1292 ,  B32B2250/02 ,  B32B2255/02 ,  B32B2255/10 ,  B32B2255/12 ,  B32B2255/26 ,  B32B2327/06 ,  B32B2333/08 ,  B32B2607/02 ,  B41J2/01 ,  B41M3/006 ,  B41M3/12 ,  B41M3/18 ,  B44C1/1729 ,  B44C1/1733 ,  C09D11/30 ,  C09J5/00 ,  C09J5/06 ,  C09J11/06 ,  C09J133/00 ,  C09J133/062 ,  C09J133/12 ,  C09J2203/10 ,  C09J2205/31 ,  C09J2400/163 ,  C09J2400/263 ,  C09J2400/283 ,  C09J2427/006 ,  C09J2433/00 ,  E04F13/07

Abstract: The present invention addresses at least the problem of providing a method for forming a high-resolution foil image regardless of the hydrophilicity of a recording medium. In order to solve said problem, the present invention provides a method wherein an adhesive ink that is formed by dispersing or dissolving a polymer resin in water and in a water-soluble organic solvent is used as an adhesive for a foil, the adhesive is applied by means of inkjet printing, and a foil image is formed. The polymer resin of the adhesive ink is a polymer of a monomer that includes (meth)acrylic acid and a (meth)acrylic acid alkyl ester having a C2-12 alkyl group, the acid value of the polymer resin being 50-120 mg KOH/g, and the glass transition temperature of the polymer resin being 30-110° C.