Source: https://patents.justia.com/patent/7018755
Timestamp: 2018-04-23 11:40:53
Document Index: 308400516

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US Patent for Electrophotographic photoconductor, electrophotography method using the same, electrophotographic apparatus, electrographic apparatus process cartridge and electrophotographic photoconductor outermost surface layer coating solution Patent (Patent # 7,018,755 issued March 28, 2006) - Justia Patents Search
Justia Patents Nitrogen Hetero Ring CompoundUS Patent for Electrophotographic photoconductor, electrophotography method using the same, electrophotographic apparatus, electrographic apparatus process cartridge and electrophotographic photoconductor outermost surface layer coating solution Patent (Patent # 7,018,755)
Sep 23, 2003 - Ricoh Company, Ltd.
ATOMIC OSCILLATOR AND METHOD FOR MANUFACTURING ATOMIC OSCILLATOR
SYSTEM, INFORMATION PROCESSING DEVICE, AND INFORMATION PROCESSING METHOD
Compound No. Structural Formula 1-1 1-2 1-3 1-4 1-5 1-6 1-7 1-8 1-9 1-10 1-11 1-12 1-13
Compound No. Structural Formula 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9 2-10 2-11
A photoconductor (21) comprises at least a photosensitive layer, and contains a filler in the outermost surface layer. Driving by drive rollers (22a) and (22b), charging by a charger (23), image exposure by a light source (24), development (not shown), transfer by a charger (25), pre-cleaning exposure by a light source (26), cleaning by a brush (27) and charge elimination by a light source (28) are repeatedly performed. In FIG. 7, the photoconductor (21) is irradiated by pre-cleaning exposure light from the carrier side (of course, in this case the carrier is translucent).
Underlayer coating solution Titanium dioxide powder 400 parts Melamine resin 65 parts Alkyd resin 120 parts 2-butanone 400 parts Charge generating layer coating solution Bis-azo pigment having the following structure 12 parts Polyvinyl butyral 5 parts 2-butanone 200 parts Cyclohexanone 400 parts Charge transport layer coating solution Polycarbonate (Z Polycarb, Teijin Chemicals Ltd.) 10 parts Charge transport material having the following structural formula 10 parts Tetrahydrofuran 100 parts
Protective layer coating solution Alumina (average first-order particle diameter: 2 parts 0.3 μm, Sumitomo Chemical Co., Ltd.) Compound expressed by Compound 1-1 0.5 parts Unsaturated polycarboxylic acid polymer solution 0.02 parts (acid value 180 mg KOH/g, BYK Chemie GmbH) Charge transport material having the following 3.5 parts structural formula Polycarbonate (Z Polycarb, Teijin Chemicals Ltd.) 6 parts Tetrahydrofuran 220 parts Cyclohexanone 80 parts
Charge generating layer coating solution Titanyl phthalocyanine having the XD spectrum of FIG. 9 8 parts Polyvinyl butyral 5 parts 2-butanone 400 parts Charge transport layer coating solution C type polycarbonate 10 parts Charge transport material having the following structural formula 8 parts Toluene 70 parts Protective layer coating solution Alumina-treated titanium oxide 1.5 parts (average first-order particle diameter 0.035 μm, Tayca Corporation) Compound represented by the Compound 1-1 0.5 parts Methacrylic acid/methyl methacrylate copolymer 0.5 parts (acid value 50 mg KOH/g) C type polycarbonate (Teijin Chemicals Ltd.) 5.5 parts Charge transport material having the following structural formula 4 parts Tetrahydrofuran 250 parts Cyclohexanone 50 parts
Alumina (average first-order particle diameter: 2 parts 0.3 μm, Sumitomo Chemical Co., Ltd.) Compound expressed by Compound 1-1 0.5 parts Charge transport material having the following 4 parts structural formula Polycarbonate (Z Polycarb, Teijin Chemicals Ltd.) 6 parts Tetrahydrofuran 220 parts Cyclohexanone 80 parts
Alumina (average first-order particle diameter: 2 parts 0.3 μm, Sumitomo Chemical Co., Ltd.) Compound expressed by Compound 1-1 0.5 parts Polyester resin (acid value 7 mg KOH/g) 0.2 parts Charge transport material having the following 4 parts structural formula Polycarbonate (Z Polycarb, Teijin Chemicals Ltd.) 6 parts Tetrahydrofuran 220 parts Cyclohexanone 80 parts
Alumina (average first-order particle diameter: 2 parts 0.3 μm, Sumitomo Chemical Co., Ltd.) Unsaturated polycarboxylic acid polymer solution 0.02 parts (acid value 180 mg KOH/g, BYK Chemie GmbH) Charge transport material having the following 4 parts structural formula Polycarbonate (Z Polycarb, Teijin Chemicals Ltd.) 6 parts Tetrahydrofuran 220 parts Cyclohexanone 80 parts
Alumina-treated titanium oxide 1.5 parts (average first-order particle diameter 0.035 μm, Tayca Corporation) Compound represented by the Compound 2-2 0.5 parts Methacrylic acid/methyl methacrylate copolymer 0.5 parts (acid value 50 mg KOH/g) C type polycarbonate (Teijin Chemicals Ltd.) 5.5 parts Charge transport material having the following structural formula 4 parts Tetrahydrofuran 250 parts Cyclohexanone 50 parts
Alumina (average first-order particle diameter: 2 parts 0.3 μm, Sumitomo Chemical Co., Ltd.) Compound expressed by Compound 2-2 0.5 parts Charge transport material having the following 4 parts structural formula Polycarbonate (Z Polycarb, Teijin Chemicals Ltd.) 6 parts Tetrahydrofuran 220 parts Cyclohexanone 80 parts
Alumina (average first-order particle diameter: 2 parts 0.3 μm, Sumitomo Chemical Co., Ltd.) Compound expressed by Compound 2-2 0.5 parts Polyester resin (acid value 7 mg KOH/g) 0.2 parts Charge transport material having the following 4 parts structural formula Polycarbonate (Z Polycarb, Teijin Chemicals Ltd.) 6 parts Tetrahydrofuran 220 parts Cyclohexanone 80 parts
Bright part Bright part Wear Photo-conductor potential Image potential amount No. (−V) quality (−V) Image quality (μm) 1 110 Good 135 Good 0.49 2 105 Good 135 Good 0.51 3 155 Good 205 Good 0.50 4 135 Good 200 Good 0.51 5 140 Good 185 Good 0.50 6 110 Good 155 Good 0.51 7 110 Good 150 Good 0.50 8 200 Good 285 Medium degree of 0.56 Image density decrease 9 120 Good 150 Good 0.54 10 125 Good 175 Good 0.55 11 130 Good 170 Good 0.56 12 120 Good 155 Good 0.70 13 110 Good 150 Good 0.79 14 110 Good 155 Good 0.53 15 130 Good 170 Good 0.48 16 120 Good 165 Good 0.44 17 260 Image density 385 Large degree of 1.02 (Comp. Ex. 1) decrease small Image density decrease Undistinguishable image 18 240 Image density 350 Large degree of 0.93 (Comp. Ex. 2) decrease small Image density decrease Undistinguishable image 19 120 Good 150 Large degree of 0.50 (Comp. Ex. 3) Image density decrease 20 115 Good 140 Good 0.50 22 110 Good 145 Good 0.50 23 115 Good 140 Good 0.49 24 110 Good 150 Good 0.50 25 160 Good 210 Good 0.49 26 140 Good 200 Good 0.52 27 145 Good 190 Good 0.51 28 120 Good 165 Good 0.52 29 115 Good 155 Good 0.50 30 200 Good 295 Small degree of 0.52 Image density decrease 31 125 Good 160 Good 0.52 32 125 Good 180 Good 0.59 33 135 Good 180 Good 0.57 34 125 Good 165 Good 0.72 35 115 Good 160 Good 0.79 36 115 Good 160 Good 0.52 37 135 Good 170 Good 0.49 38 130 Good 170 Good 0.44 39 275 Image density 405 Large degree of 1.03 (Comp. Ex. 4) low Image density decrease Undistinguishable image 40 245 Image density 360 Large degree of 0.93 (Comp. Ex. 5) low Image density decrease Undistinguishable image 41 120 Good 145 Good 0.51
TABLE 4 Initial image Image quality after Photoconductor quality resolution standing resolution No. (lines/mm) (lines/mm)
1 8.0 8.0 19 8.0 2.8 (Comp. EX. 3) 20 8.0 8.0 21 8.0 8.0 22 8.0 8.0 23 8.0 8.0 41 8.0 8.0
Alumina (average first-order particle diameter: 2 parts 0.3 μm, Sumitomo Chemical Co., Ltd.) Compound expressed by Compound 1-1 0.5 parts Unsaturated polycarboxylic acid polymer solution 0.02 parts (acid value 180 mg KOH/g, BYK Chemie GmbH) Charge transport material having the following 3.5 parts structural formula Polycarbonate (Z Polycarb, Teijin Chemicals Ltd.) 6 parts Hydroquinone compound having the following 0.005 parts structural formula: Tetrahydrofuran 220 parts Cyclohexanone 80 parts
TABLE 5 Optical absorbance variation rate at 665 nm
Coating solution A 1.21 Coating solution B 1.01 Coating solution C 1.02 Coating solution D 1.10 Coating solution E 1.11 Coating solution F 1.12 Coating solution G 1.22 Coating solution H 1.02 Coating solution I 1.04 Coating solution J 1.11 Coating solution K 1.13 Coating solution L 1.15
at least one selected from the group consisting of compounds represented by the following general formulas 1 and 2:
where R1, R2 are substituted or unsubstituted alkyl groups or aromatic hydrocarbon rings, and may be identical or different; R1, R2 may also be bonded together to form a substituted or unsubstituted heterocycle containing a nitrogen atom; R3, R4, R5 are substituted or unsubstituted alkyl or alkoxy groups, or halegen atoms; Ar is a substituted or unsubstituted or unsubstituted aromatic hydrocarbon ring or aromatic heterocycle; n is an integer in the range 2 to 4; k, l, m are respectively integers in the range 0 to 3; and X is, in the general formula 1, an oxygen atom, or a sulfur atom.
where R1, R2 are substituted or unsubstituted alkyl groups or aromatic hydrocarbon rings, and may be identical or different; R1, R2 may also be bonded together to form a substituted or unsubstituted heterocycle containing a nitrogen atom; R3, R4, R5 are substituted or unsubstituted alkyl or alkoxy groups, or halogen atoms; Ar is a substituted or unsubstituted aromatic hydrocarbon ring or aromatic heterocycle; n is a integer in the range 2 to 4; k, l, m are respectively integers in the range 0 to 3; and X is, in the general formula 1, an oxygen atom, or a sulfur atom; and
where R1, R2 are substituted or unsubstituted alkyl groups or aromatic hydrocarbon rings, and may be identical or different; R1, R2 may also be bonded together to form a substituted or unsubstituted heterocycle containing a nitrogen atom; R3, R4, R5 are substituted or unsubstituted alkyl or alkoxy groups, or halogen atoms; Ar is a substituted or unsubstituted aromatic hydrocarbon ring or aromatic heterocycle; n is an integer in the range 2 to 4; k, l, m are respectively integers in the range 0 to 3; and X is, in the general formula 1, an oxygen atom, or a sulfur atom.
where, in the general formulas 1 and 2, R1, R2 are substituted or unsubstituted alkyl groups or aromatic hydrocarbon rings, and may be identical or different; R1, R2 may also be bonded together to form a substituted or unsubstituted heterocycle containing a nitrogen atom; R3, R4, R5 are substituted or unsubstituted alkyl or alkoxy groups, or halogen atoms; Ar is a substituted or unsubstituted aromatic hydrocarbon ring or aromatic heterocycle; n is an integer in the range 2 to 4, and k, l, m are respectively integers in the range 0 to 3; and X is, in the general formula 1, an oxygen atom, or a sulfur atom.
at least one selected from the group consisting of compounds represented by the following formulas 1 and 2:
where R1, R2 are substituted or unsubstituted alkyl groups or aromatic hydrocarbon rings, and may be identical or different; R1, R2 may also be bonded together to form a substituted or unsubstituted heterocycle containing a nitrogen atom; R3, R4, R5 are substituted or unsubstituted alkyl or alkoxy groups, or halogen atoms; Ar is a substituted or unsubstituted aromatic hydrocarbond ring or aromatic heterocycle; n is an integer in the range 2 to 4; k, l, m are respectively integers in the range 0 to 3; and X is, in the general formula 1, an oxygen atom, or a sulfur atom.
3730712 May 1973 Futaki
1 205 808 May 2002 EP
Grant, R. et. al., ed., Grant's & Hackh's Chemical Dictionary, fifth ediition, McGraw-Hill Book Company, NY (1987), p. 114.
Patent Abstracts of Japan, JP 2002-207308, Jul. 26, 2002.
U.S. Appl. No. 10/792,607, filed Mar. 4, 2004, Ikegami et al.
U.S. Appl. No. 10/856,962, filed Jun. 1, 2004, Ikegami et al.
U.S. Appl. No. 11/006,643, filed Dec. 8, 2004, Takada et al.
U.S. Appl. No. 11/068,180 filed Mar. 1, 2005, Tamoto et al.
Patent Publication Number: 20040126687
Inventors: Takaaki Ikegami (Shizuoka), Tomoyuki Shimada (Shizuoka), Yasuo Suzuki (Shizuoka), Nozomu Tamoto (Shizuoka), Hidetoshi Kami (Shizuoka)
Application Number: 10/667,410
Current U.S. Class: Nitrogen Hetero Ring Compound (430/58.5); Triamine, Or Diamine Containing (430/58.75); Product Having Overlayer On Radiation-conductive Layer (430/66); Containing Amino Or Substituted Amino Group (430/73); Alkyl Amino Group (430/74); The Hetero Ring Has At Least Nitrogen As A Ring Hetero Atom (430/76); Radiation Sensitive Composition Or Product Containing Specified Antioxidant (430/970); 430/126; Photoconductive Member (399/116); Photoconductive Member (399/159); Electrically Conductive Or Emissive Compositions (252/500)
International Classification: G03G 5/047 (20060101); G03G 5/147 (20060101);