EP0651418A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Electron source, image forming apparatus using the same, method of manufacturing the same, and method of driving the same
Assignee: Canon Inc
•
Filing: 1994-10-27
•
Granted: —
•
Expires: 2014-10-27
Abstract
Abstract This invention relates to an electron source and an image forming apparatus each of which particularly comprises a surface conduction type electron emitting element as an electron emitting element, a method of manufacturing an electron source and an image forming apparatus, in which the energization forming treatment step of the surface conduction type electron emitting element is performed by applying a voltage to an electron emitting portion formation thin film via a nonlinear element connected in series with the thin film and having nonlinear voltage/current characteristics, an electron source and an image forming apparatus in each of which the nonlinear element is connected in series with the surface conduction type electron emitting element, and a method of driving the same. Typical nonlinear elements include rectification and diode elements. In addition an element for removing a noise component superposed on the input signal is connected in series with surface conduction type electron emitting element.
Inventors
- 👤 Aoji C/O Canon Kabushiki Kaisha Isono
- 👤 Yoshiyuki C/O Canon Kabushiki Kaisha Osada
- 👤 Hidetoshi C/O Canon Kabushiki Kaisha Suzuki
- 👤 Eiji C/O Canon Kabushiki Kaisha Yamaguchi
- 👤 Toshihiko C/O Canon Kabushiki Kaisha Takeda
- 👤 Hiroaki C/O Canon Kabushiki Kaisha Toshima
- 👤 Noritake C/O Canon Kabushiki Kaisha Suzuki
- 👤 Yasuyuki C/O Canon Kabushiki Kaisha Todokoro
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 22:56
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/30; G; G09; G09G; G09G3/00; G09G3/20; G09G3/22; B; B82; B82Y; B82Y10/00; H01J1/316; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/123; H01J31/125; H01J31/127; H01J9/00; H01J9/02; H01J9/022; H01J9/027; G09G2300/00; G09G2300/08; G09G2300/088; G09G2300/0885; G09G2310/00; G09G2310/06; H01J2201/00; H01J2201/30; H01J2201/316; H01J2201/3165; H01J2201/319
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
102 words
A method of manufacturing an electron source in which a plurality of surface conduction type electron emitting elements connected to row- and column-direction wiring lines are arranged on a substrate in a matrix, comprising: the energization forming treatment step executed by applying voltages to an electron emitting portion formation thin films via the row- and column-direction wiring lines, the energization forming treatment step including the step of applying a voltage to each of the electron emitting portion formation thin films via a nonlinear element which is connected in series with the electron emitting portion formation thin film and has nonlinear voltage/current characteristics.
Claim 2
Dependent Claim
15 words
The method according to claim 1, wherein the nonlinear element is a reverse-flow prevention element.
Claim 3
Dependent Claim
14 words
The method according to claim 1, wherein the nonlinear element is a rectification element.
Claim 4
Dependent Claim
16 words
The method according to claim 1, wherein the nonlinear element is an element having diode characteristics.
Claim 5
Dependent Claim
18 words
The method according to claim 4, wherein the element having the diode characteristics is an amorphous silicon diode.
Claim 6
Dependent Claim
17 words
The method according to claim 4, wherein the element having the diode characteristics is a polysilicon diode.
Claim 7
Dependent Claim
18 words
The method according to claim 4, wherein the element having the diode characteristics is a mono-crystalline silicon diode.
Claim 8
Dependent Claim
14 words
The method according to claim 1, wherein the nonlinear element is an MIM element.
Claim 9
Independent Claim
33 words
The method according to any one of claims 1 to 8, wherein each of the surface conduction type electron emitting elements has a local high-resistance portion in a conductive film arranged between electrodes.
Claim 10
Dependent Claim
25 words
The method according to claim 9, wherein the energization forming treatment step comprises the step of forming the local high-resistance portion in the conductive film.
Claim 11
Independent Claim
76 words
A method of manufacturing an image forming apparatus having an electron source in which a plurality of surface conduction type electron emitting elements connected to row- and column-direction wiring lines are arranged on a substrate in a matrix, and an image forming member for forming an image upon irradiation by an electron beam emitted from said electron source, wherein said electron source is manufactured by a method according to any one of claims 1 to 10.
Claim 12
Dependent Claim
48 words
An electron source which has a surface conduction type electron emitting element and emits an electron beam in accordance with an input signal, wherein an element for removing a noise component superposed on the input signal is connected in series with said surface conduction type electron emitting element.
Claim 13
Dependent Claim
45 words
The electron source according to claim 12, comprising a plurality of said surface conduction type electron emitting elements, and a plurality of said elements for removing the noise component, which are connected in series with said plurality of surface conduction type electron emitting elements, respectively.
Claim 14
Dependent Claim
45 words
The electron source according to claim 13, wherein said plurality of surface conduction type electron emitting elements connected in series with said elements for removing the noise component are connected to row- and column-direction wiring lines, and are arranged on a substrate in a matrix.
Claim 15
Dependent Claim
23 words
The electron source according to claim 12, wherein said element for removing the noise component is a nonlinear element having nonlinear voltage/current characteristics.
Claim 16
Dependent Claim
16 words
The electron source according to claim 15, wherein said nonlinear element is a reverse-flow prevention element.
Claim 17
Dependent Claim
17 words
The electron source according to claim 15, wherein said nonlinear element is an element having diode characteristics.
Claim 18
Dependent Claim
19 words
The electron source according to claim 17, wherein said element having the diode characteristics is an amorphous silicon diode.
Claim 19
Dependent Claim
18 words
The electron source according to claim 17, wherein said element having the diode characteristics is a polysilicon diode.
Claim 20
Dependent Claim
19 words
The electron source according to claim 17, wherein said element having the diode characteristics is a monocrystalline silicon diode.
Claim 21
Dependent Claim
15 words
The electron source according to claim 15, wherein said nonlinear element is an MIM element.
Claim 22
Dependent Claim
35 words
The electron source according to any one of claims 12 to 21, wherein said surface conduction type electron emitting element is an element having a local high-resistance portion in a conductive film arranged between electrodes.
Claim 23
Dependent Claim
45 words
An image forming apparatus having an electron source and an image forming member for forming an image upon irradiation by an electron beam emitted from said electron source, wherein said electron source is an electron source according to any one of claims 12 to 22.
Claim 24
Independent Claim
41 words
A method of driving an electron source having a surface conduction type electron emitting element, comprising the step of applying a signal from which a noise component superposed on the signal is removed to said surface conduction type electron emitting element.
Claim 25
Dependent Claim
89 words
The method according to claim 24, wherein a plurality of said surface conduction type electron emitting elements connected to row- and column-direction wiring lines are arranged on a substrate in a matrix, and said method comprises the step of applying a scanning signal to the row-direction wiring lines, and applying a modulation signal to the column-direction wiring lines, and the step of applying a signal from which a noise component superposed on the scanning signal or the modulation signal is removed to said surface conduction type electron emitting elements.
Claim 26
Dependent Claim
47 words
A method of driving an image forming apparatus having an electron source and an image forming member for forming an image upon irradiation by an electron beam emitted from said electron source, wherein said electron source is driven by a method according to claim 24 or 25.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.