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1. 发明专利

JPH0329841A MEASURING METHOD OF TRAP LEVEL 失效
公开(公告)号：JPH0329841A
公开(公告)日：1991-02-07
申请号：JP16610689
申请日：1989-06-28
申请人： TOSHIBA CORP
发明人： NISHIZAWA HIDEYUKI , SUGIUCHI MASAMI , NAKAJIMA YUKO
IPC分类号： G01N27/00
摘要： PURPOSE:To improve the precision of measurement by a method wherein an electric field is impressed on a sample to be measured while a light pulse is applied thereto, a photocurrent therefrom is detected and the intensity of the impressed electric field whereat a trap level is zero is detected based on a transitional waveform of the photocurrent. CONSTITUTION:A light pulse 4 from a light source 5 excited by a light trigger from a timing controller 6 is applied to a sample 2 whereon an electric field having a prescribed intensity is impressed by a high-voltage pulse from a high- voltage pulse generator 3. A transitional photocurrent generated by said light pulse 4 and attenuating with a lapse of time is amplified by an amplifier 7 and recorded in a recorder 8, while it is analyzed by a computer 9. A series of these measurements are executed with the intensity of the electric field varied, the waveform of each photocurrent obtained therein is recorded and analyzed, and thereby the intensity of the electric field at the time when a trap level turns to be zero is obtained. By using this intensity of the electric field, the trap level of the sample is calculated.

2. 发明专利

JPS63155046A ELECTROPHOTOGRAPHIC SENSITIVE BODY 失效
公开(公告)号：JPS63155046A
公开(公告)日：1988-06-28
申请号：JP30138086
申请日：1986-12-19
申请人： TOSHIBA CORP
发明人： TSUNEMI KOICHI , NAKAJIMA YUKO
IPC分类号： G03G5/05 , G03G5/06
摘要： PURPOSE:To improve resolution by forming an electric charge transfer layer of a compsn. prepd. by mixing a specific binder resin and hydrazone compd. CONSTITUTION:The charge transfer layer is formed by dissolving the binder resin expressed by formula I and the hydrazone compd. expressed by formula II in a suitable org. solvent and forming the layer of such soln. The binder resin is compounded at 0.1-3pts.wt. per 1pt.wt. hydrazone compd. to form the layer. In formulas, A is an isobutyl group or diphenyl aminobenzyl group which may be substd., R1 is an aryl group or heterocyclic group which may be substd., R2 is an aryl group which may be substd., alkyl group which may be substd. or heterocyclic group, R3 is a heterocyclic group which may be substd. or aryl group or aralkyl group which may be substd., R4 is an aryl group which may be substd., alkyl group which may be substd., aralkyl group which may be substd. or hydrogen atom. The resolution is thereby improved.

3. 发明专利

JPS63151954A POSITIVE ELECTRIFICATION TYPE ELECTROPHOTOGRAPHIC SENSITIVE BODY 失效
公开(公告)号：JPS63151954A
公开(公告)日：1988-06-24
申请号：JP29877986
申请日：1986-12-17
申请人： TOSHIBA CORP
发明人： NAKAJIMA YUKO , SUGIUCHI MASAMI
IPC分类号： G03G5/06 , G03G5/043
摘要： PURPOSE:To enhance electrification capability, sensitivity, and stability against repeated uses by laminating a first photosensitive layer containing a first electric charge generating material higher in photosensitivity in negative electrification than in positive electrification and a second photosensitive layer containing a second charge generating material higher in photosensitivity in positive electrification than in negative electrification to form a composite photosensitive layer. CONSTITUTION:The first photosensitive layer located on the surface of the photosensitive body and containing the first charge generating material higher in photosensitivity in negative electrification than in positive electrification and the second photosensitive layer located on the side of a substrate and containing the second charge generating material higher in photosensitivity in positive electrification than in negative electrification are laminated to form the composite photosensitive layer, thus permitting the obtained photosensitive body to be extremely enhanced in photosensitivity, stabilized in chargeability characteristics against repeated uses, and adapted to practical uses. As the usable binder material, polyethylene, polypropylene, addition polymerization type resins, such as melamine resins, polymerization addition type resins polycondensation type resins, and polymer organic semiconductors, such as poly-N-vinylcarbazole, are embodied.

4. 发明专利

JPS6217750A ELECTROPHOTOGRAPHIC SENSITIVE BODY 失效
公开(公告)号：JPS6217750A
公开(公告)日：1987-01-26
申请号：JP15518485
申请日：1985-07-16
申请人： TOSHIBA CORP
发明人： SUGIUCHI MASAMI , NAKAJIMA YUKO
IPC分类号： G03G5/06
摘要： PURPOSE:To prevent deterioration of sensitivity due to repeated uses and to obtain a photosensitive body stable in photosensitive characteristics by incorporating one of hydrazone type compounds in the photosensitive layer of the photosensitive body. CONSTITUTION:The photosensitive layer formed on the conductive substrate of the electrophotographic sensitive body contains one of the hydrazone type compounds represented by formulae I and II in which R1 is 1-6C alkyl; R2 is optionally substituted 1-5C alkyl or optionally substituted vinyl; X is H, halogen, 1-3C alkoxy, nitro, or amino; and R3 is 1-6C alkyl. As a result, the deterioration of sensitivity due to the repeated uses of the photosensitive body can be reduced, and the photosensitive characteristics of the photosensitive body can be stabilized.

5. 发明专利

JPH0333647A METHOD FOR MEASURING CARRIER INJECTION EFFICIENCY 失效
公开(公告)号：JPH0333647A
公开(公告)日：1991-02-13
申请号：JP16905489
申请日：1989-06-30
申请人： TOSHIBA CORP
发明人： NISHIZAWA HIDEYUKI , NAKAJIMA YUKO , SUGIUCHI MASAMI
IPC分类号： G01N27/00
摘要： PURPOSE:To prevent the reception of the effect of the trap in a charge transport layer by applying an electric field having specific intensity to a lamination type sample consisting of a charge forming layer and a charge transport layer and also irradiating said sample with light. CONSTITUTION:The sample to which an electric field having predetermined intensity is applied from a high voltage pulse generator 3 by a high voltage pulse is irradiated with the light pulse 4 from a light source 5 excited by the light trigger from a timing controller 6. The transient photocurrent generated by said light pulse 4 and attenuated with the elapse of time is amplified by an amplifier 7 and the waveform thereof is recorded on a recorder 8 and also analyzed by a computer 9. A series of these measurements are performed while the intensity of an electric field is changed and the waveforms of the respective photocurrents obtained at that time are recorded and also analyzed and the initial value of a photocurrent obtained when an electric field having intensity sufficient to saturate the carrier forming efficiency of a charge forming layer or more is applied is measured to make it possible to calculate carrier injection efficiency.

6. 发明专利

JPH02301037A RECORDING MEDIUM AND RECORDING AND REPRODUCING METHOD 失效
公开(公告)号：JPH02301037A
公开(公告)日：1990-12-13
申请号：JP11871489
申请日：1989-05-15
申请人： TOSHIBA CORP
发明人： NISHIZAWA HIDEYUKI , NAKAJIMA YUKO
IPC分类号： G11B9/00 , G11B9/02 , G11B9/14
摘要： PURPOSE:To allow rapid reading out with high accuracy and to easily form the recording medium by forming the recording medium of an org. thin film contg. a required org. conductive material and executing writing and reading out by impressing an electric field to the medium. CONSTITUTION:The recording medium is formed of the org. thin film contg. the org. conductive material having spontaneous bipoles, such as hydrazone deriv. The molecular orientation of the org. conductive material is changed by the force to allow the spontaneous bipoles to orient in an electric field direction and the information writing is executed when the electric field is impressed to the medium. This information does not depend on the detection of a slight tunnel current and the detection of a change in capacity which takes time as the current generated by the impression of the electric field to the recording medium and, therefore, the rapid and accurate reading out is executed; in addition, the need for the orientation treatment in the same direction, etc., is eliminated and the formation of the recording medium is facilitated.

7. 发明专利

JPS6474551A ELECTROPHOTOGRAPHIC SENSITIVE BODY 失效
公开(公告)号：JPS6474551A
公开(公告)日：1989-03-20
申请号：JP23102187
申请日：1987-09-17
申请人： TOSHIBA CORP
发明人： NAKAJIMA YUKO , SUGIUCHI MASAMI , SANO KENJI
IPC分类号： G03G5/06
摘要： PURPOSE:To provide the titled body with the excellent flexibility, optical sensitivity, electric charge characteristic and residual voltage characteristic by incorporating at least one kind of a substd. ethylenic compd. which contains more trans isomer than cis isomer and is shown by a specified formula, in a photosensitive layer of the titled body, as an electric charge transfer compd. CONSTITUTION:In the titled body provided with the photosensitive layer mounted on an electron conductive supporting body, as the substd. ethylenic compd. which contains more trans isomer than cis isomer is excellent in the charge transfer property, said compd. is incorporated in the photosensitive layer. Namely, at least one kind of said substd. ethylenic compd. shown by the formula is incorporated in the photosensitive layer. In the formula, R1 and R2 are each alkyl, aryl, aralkyl or a condensed polycyclic heterocyclic ring group which may be substd., or hydrogen or halogen atom or cyano group, R3 and R4 are each alkyl, aryl, aralkyl or a condensed polycyclic heterocyclic ring group which may be substd. wherein R1 and R3, and R2 and R4 each are not the same group with each other.

8. 发明专利

JPS63174053A ELECTROPHOTOGRAPHIC SENSITIVE BODY 失效
公开(公告)号：JPS63174053A
公开(公告)日：1988-07-18
申请号：JP492587
申请日：1987-01-14
申请人： TOSHIBA CORP
发明人： NAKAJIMA YUKO , SUGIUCHI MASAMI
IPC分类号： G03G5/05 , G03G5/06
摘要： PURPOSE:To improve the electrification and the sensitivity of the positive charge photosensitive body by incorporating a specific triphenylmethane and a hydrazone compd. to a photosensitive layer used a phthalocyanine material. CONSTITUTION:The triphenylmethane (B) shown by formula I and the hydrazone compd. (C) shown by formula II are incorporated to the photosensitive layer used the phthalocyanine type electric charge generating material (A). In formula I, R1-R4 are each H atom or 1-8C alkyl group, etc., R5 and R6 are each H atom or OH group, etc., R7 is H atom or alkoxy group, etc. In formula II, R1 is H atom, a (substd.)alkyl group, etc., R2 is a (substd.)aryl or aralkyl group, etc., R3 is a (substd.)aryl or alkyl group, etc., R4 is a (substd.)heterocyclic ring group. And, the titled photosensitive layer can be formed by incorporating the components B and C to a dispersion of the component A (for example, epsilon-copper phthalocyanine) or by incorporating the component A and at least the component B to an electric charge generating layer, and at least the component C to an electric charge transferring layer, respectively.

9. 发明专利

JPS62231262A ELETROPHOTOGRAPHIC SENSITIVE BODY 失效
公开(公告)号：JPS62231262A
公开(公告)日：1987-10-09
申请号：JP7342986
申请日：1986-03-31
申请人： TOSHIBA CORP
发明人： HIRAO AKIKO , NAKAJIMA YUKO
IPC分类号： G03G5/04 , G03G5/047 , G03G5/06
摘要： PURPOSE:To obtain the titled body having improved sensitivity by incorporating a specific hydrazone compd. to an electrostatic charge transfer layer and a specific pyrazolone dye and a specific indigoid pigment and the prescribed hydrazone compd. to an electrostatic charge generating layer respectively. CONSTITUTION:In the titled body laminated the electrostatic charge transfer layer and the electrostatic charge generating layer on a conductive substrate body in order, the electrostatic charge transfer layer contains the hydrazone comd. shown by formula I, the electrostatic charge generating layer contains one kind of the compd. selected from the pyrazolone dye shown by formula II and the indigoid pigment shown by formula III and the hydrazone compd. shown by formula I. In the fomulas, R1 and R2 are each an aryl or a heterocyclic ring group, R3 and R4 are each an aryl or an alkyl group, etc., R'1-R'4 are each a monovalent group selected from hydrogen atoms, a carboxyl and an alkyl groups, etc., R'5 and R'6 are each halogen atom, etc., R''1-R''4 are each an alkyl and or an alkoxy groups, etc., X1-X4 are each sulfur atom or NH group. Thus, the titled stable body having the remarkably improved sensitivity and a less tendency for generating an influence due to an abrasion of the electrostatic charge generating layer is obtd.

10. 发明专利

JPS62178266A ELECTROPHOTOGRAPHIC SENSITIVE BODY 失效
公开(公告)号：JPS62178266A
公开(公告)日：1987-08-05
申请号：JP2078386
申请日：1986-01-31
申请人： TOSHIBA CORP
发明人： SUGIUCHI MASAMI , NAKAJIMA YUKO
IPC分类号： G03G5/04 , G03G5/06
摘要： PURPOSE:To obtain a specific good photosensitive body by superposing one of a nonmetallic phthalocyanine and the deriv. thereof and specific metal-contg. phthalocyanine and the deriv. thereof as an electric charge generating layer on a conductive base and a specific hydrazone compd. as an electric charge transfer layer thereon. CONSTITUTION:The charge generating layer consisting of the compsn. contg. the nonmetallic phthalocyanine and the deriv. thereof or the metal-contg. phthalocyanine expressed by formula I and the deriv. thereof is formed on a brass plate. R is H, halogen, cyano group, nitro group, M is Cu, etc., A, B are halogen or O, X, Y are 0 if M is bivalent X=1, Y=0, if tervalent, X=Y=1 if quadrivalent, A is 0 and X=1, Y=0 in the case of V, Ti, A, B are O and X=Y=1 in the case of U. The charge transfer layer consisting of the hydrazone compd. expressed by formula IIa or IIb is superposed thereon. R1 is alkyl group of 1-6C, R2 is an atom or group selected from H, halogen, alkyl group of 1-3C, alkoxy group of 1-3C, OH group, nitro group, amino group, substd. amino group, R3 is an alkyl group of 1-4C, aral group or phenyl group which may be substd.

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