PATENT CLAIM ANALYSIS

Application Number: 15870234
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-05
Patent Classification: ["430", "109300"]

Abstract:
Provided is a toner that is excellent in heat-resistant shelf stability and low-temperature fixability, has durability, and causes less occurrence of fogging in high temperature and high humidity environments. The toner comprising at least a binder resin, a colorant, a release agent, a retention aid and a charge control resin. The binder resin is a copolymer containing a styrene-based monomer unit 67 to 78% by mass and a (meth)acrylic acid alkyl monomer unit 22 to 33% by mass. The content of the retention aid is 1 to 4 parts by mass with respect to 100 parts by mass of the binder resin, and the content of the charge control resin is 0.1 to 20 parts by mass with respect to 100 parts by mass of the binder resin.

Claim (Index 1):
A toner comprising a binder resin, a colorant, a release agent, a first copolymer, and a charge control resin, wherein the binder resin is a second copolymer containing 67 to 78% by mass of a styrene-based monomer unit and 22 to 33% by mass of a (meth)acrylic acid alkyl monomer unit;\n wherein the styrene-based monomer unit is a monomer unit relating to at least one kind of monomer selected from the group consisting of styrene, vinyltoluene, methylstyrene and ethylstyrene; wherein the (meth)acrylic acid alkyl monomer unit is a monomer unit relating to at least one kind of monomer selected from the group consisting of methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, dimethylaminoethyl acrylate, methyl methacrylate, ethyl methacrylate, propyl methacrylate, butyl methacrylate, 2-ethylhexyl methacrylate, and dimethylaminoethyl methacrylate; wherein a content of the first copolymer is 1 to 4 parts by mass with respect to 100 parts by mass of the binder resin; wherein a content of the charge control resin is 0.1 to 20 parts by mass with respect to 100 parts by mass of the binder resin; and wherein, when an interfacial tension of a solution of 1 part by mass of the first copolymer dissolved in a mixture of 72 parts by mass of styrene and 28 parts by mass of n-butyl acrylate is \u03b1 (mN/m) with respect to water, and an interfacial tension of a solution of 1 part by mass of the charge control resin dissolved in a mixture of 72 parts by mass of styrene and 28 parts by mass of n-butyl acrylate is \u03b2 (mN/m) with respect to water, the following formulae (1) to (3) are all satisfied and a glass transition temperature of the first copolymer and that of the charge control resin are 60 to 80\u00b0 C. and 55 to 90\u00b0 C., respectively:\n 19.0\u2264\u03b1\u226421.6\u2003\u2003Formula (1) \n 14.3\u2264\u03b2\u226417.4\u2003\u2003Formula (2) \n \u22121.0\u2264\u03b1\u2212\u03b2\u22647.0\u2003\u2003Formula (3)

Metadata:
- Claim Count in Document: 9.0
- Percentile: 86.0
- Lexical Diversity: 2.10294
- Patent Class: 430.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15019403', '14770544', '15038212', '13303777', '14115915']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7864509231586421
- 35 USC 102 Novelty (BERT): 0.548903550645924
- Combined Prediction Score: 0.7626961859073703
- Mean Citation Score: 290.090954
- Max Citation Score: 413.16003
- Similarity Product: 410.4063219619918

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test