PATENT CLAIM ANALYSIS

Application Number: 15879853
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["430", "075000"]

Abstract:
An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer is a single-layer photosensitive layer. The photosensitive layer contains a charge generating material, a hole transport material, an electron transport material, a binder resin, and an additive. The additive contains a carboxylic acid anhydride. A reduction potential of the carboxylic acid anhydride is at least −1.40 V versus a reference electrode (Ag/Ag + ). The carboxylic acid anhydride is contained in an amount of at least 0.02 parts by mass and no greater than 10.00 parts by mass relative to 100 parts by mass of the binder resin.

Claim (Index 3):
The electrophotographic photosensitive member according to  claim 2 , wherein\n in general formula (1), R 1  and R 2  each represent an alkyl group having a plurality of halogen atoms and having a carbon number of at least 1 and no greater than 3, the carboxylic acid anhydride represented by general formula (2) is represented by general formula (2-1), where in general formula (2-1), R 21 , R 22 , R 23 , and R 24  each represent, independently of one another, a hydrogen atom, a halogen atom, or an aryl group having a carbon number of at least 6 and no greater than 14, provided that R 21 , R 22 , R 23 , and R 24  do not all simultaneously represent hydrogen atoms, and neither R 21  nor R 22  is bonded to R 23  or R 24  to form a ring, in general formula (3), the non-aromatic heterocycle represented by the ring Y 3  may further include a nitrogen atom as a ring member atom other than the oxygen atom, the ring Z 3  represents at least one benzene ring, naphthalene ring, anthracene ring, or thiophene ring, and the fourth substituent of the ring Z 3  represents an alkynyl group that has a carbon number of at least 2 and no greater than 4 and that has an aryl group having a carbon number of at least 6 and no greater than 14, an alkyl group having a carbon number of at least 1 and no greater than 6, a carboxyl group, a halogen atom, or a nitro group, in general formula (4), the ring Y 4A  and the ring Y 4B  each represent the non-aromatic heterocycle having 5 or 6 ring members, the ring Z 4  represents a benzene ring or a naphthalene ring, and the fourth substituent of the ring Z 4  represents a halogen atom, the carboxylic acid anhydride represented by general formula (5) is represented by general formula (5-2) shown below, and in general formula (5-2), X 5  represents a carbonyl group, a sulfonyl group, a single bond, a divalent group represented by chemical formula (5-1), an oxygen atom, or a methylene group having two third substituents, and the third substituent represents an alkyl group having a plurality of fluorine atoms and having a carbon number of at least 1 and no greater than 3.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 86.0
- Lexical Diversity: 1.9322
- Patent Class: 430.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15160601', '16092013', '15247373', '15077144', '16472178']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7901445961794534
- 35 USC 102 Novelty (BERT): 0.4842114369552648
- Combined Prediction Score: 0.7595512802570347
- Mean Citation Score: 235.462686
- Max Citation Score: 240.03873
- Similarity Product: 193.63593637018025

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