JP2019197238A5 - - Google Patents
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- JP2019197238A5 JP2019197238A5 JP2019153356A JP2019153356A JP2019197238A5 JP 2019197238 A5 JP2019197238 A5 JP 2019197238A5 JP 2019153356 A JP2019153356 A JP 2019153356A JP 2019153356 A JP2019153356 A JP 2019153356A JP 2019197238 A5 JP2019197238 A5 JP 2019197238A5
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- JP
- Japan
- Prior art keywords
- developer
- chamber
- image forming
- transport screw
- transport
- Prior art date
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- 230000032258 transport Effects 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 10
- 239000000969 carrier Substances 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 2
Description
前記目的を達成するための本発明に係る画像形成装置の代表的な構成は、像担持体に形成された静電潜像を現像するための現像装置であって、前記像担持体に形成された静電潜像を現像するためにトナーとキャリアを含む現像剤を担持する現像剤担持体と、前記現像剤担持体に現像剤を供給するための第一室と、前記第一室と隔壁により区画された第二室と、前記第二室から前記第一室に現像剤が連通することを許容する第一連通部と、前記第一室から前記第二室に現像剤が連通することを許容する第二連通部と、前記第一室に配置され、画像形成動作中において現像剤を前記第一連通部から前記第二連通部に向かう第一搬送方向に搬送する第一搬送スクリューと、前記第二室に配置され、前記画像形成動作中において第一回転方向に回転することにより現像剤を前記第二連通部から前記第一連通部に向かう第二搬送方向に搬送する第二搬送スクリューと、前記第一連通部の近傍に配置され、前記現像装置から現像剤の一部を排出するための現像剤排出部と、前記第二搬送スクリューよりも鉛直方向上方に配置され、初期現像剤を収容するための収容部と、前記収容部に設けられ前記第二室との間で現像剤が連通可能な開口部と、前記開口部をシールして前記収容部に初期現像剤を封止するための封止シートと、を含む現像装置と、前記第二搬送スクリューを回転駆動するための駆動部と、前記現像装置の初期化動作の開始に伴って、前記封止シートによる初期現像剤の封止が解除されてからの所定時間、前記第二搬送スクリューを前記第一回転方向とは反対方向である第二回転方向に回転駆動し、前記所定時間が経過した後、前記第二搬送スクリューを前記第一回転方向に回転駆動するよう前記駆動部を制御するモードを実行可能な制御部と、を備えたことを特徴とする。 A typical configuration of the image forming apparatus according to the present invention for achieving the above object is a developing device for developing an electrostatic latent image formed on an image carrier, which is formed on the image carrier. Developer carrying a developer containing a toner and a carrier for developing the electrostatic latent image, a first chamber for supplying a developer to the developer carrying body, the first chamber and a partition And a first communication portion that allows the developer to communicate from the second chamber to the first chamber, and the developer to communicate from the first chamber to the second chamber. A second communication portion that allows the developer to be transported, and a first conveyance that is arranged in the first chamber and conveys the developer in the first conveyance direction from the first communication portion to the second communication portion during an image forming operation. A screw, which is disposed in the second chamber and rotates in the first rotation direction during the image forming operation. A second transport screw that transports the developer in a second transport direction from the second communication section toward the first communication section, and is disposed near the first communication section, and the developer is A developer discharging portion for discharging a part of the second conveying screw, a housing portion arranged vertically above the second transport screw and housing the initial developer, and the second chamber provided in the housing portion. A developing device including: an opening through which a developer can communicate, a sealing sheet for sealing the opening and sealing the initial developer in the storage portion, and the second transport screw A drive unit for rotationally driving, with the start of the initialization operation of the developing device, for a predetermined time after the sealing of the initial developer by the sealing sheet is released, the second transport screw is Second rotation direction opposite to the first rotation direction Rotating driven, wherein after a predetermined time has elapsed, and a control unit capable of executing a mode for controlling the driving unit so as to rotate the said second conveying screw in the first rotational direction And
Claims (5)
前記像担持体に形成された静電潜像を現像するためにトナーとキャリアを含む現像剤を担持する現像剤担持体と、
前記現像剤担持体に現像剤を供給するための第一室と、
前記第一室と隔壁により区画された第二室と、
前記第二室から前記第一室に現像剤が連通することを許容する第一連通部と、
前記第一室から前記第二室に現像剤が連通することを許容する第二連通部と、
前記第一室に配置され、画像形成動作中において現像剤を前記第一連通部から前記第二連通部に向かう第一搬送方向に搬送する第一搬送スクリューと、
前記第二室に配置され、前記画像形成動作中において第一回転方向に回転することにより現像剤を前記第二連通部から前記第一連通部に向かう第二搬送方向に搬送する第二搬送スクリューと、
前記第一連通部の近傍に配置され、前記現像装置から現像剤の一部を排出するための現像剤排出部と、
前記第二搬送スクリューよりも鉛直方向上方に配置され、初期現像剤を収容するための収容部と、
前記収容部に設けられ前記第二室との間で現像剤が連通可能な開口部と、
前記開口部をシールして前記収容部に初期現像剤を封止するための封止シートと、
を含む現像装置と、
前記第二搬送スクリューを回転駆動するための駆動部と、
前記現像装置の初期化動作の開始に伴って、前記封止シートによる初期現像剤の封止が解除されてからの所定時間、前記第二搬送スクリューを前記第一回転方向とは反対方向である第二回転方向に回転駆動し、前記所定時間が経過した後、前記第二搬送スクリューを前記第一回転方向に回転駆動するよう前記駆動部を制御するモードを実行可能な制御部と、
を備えたことを特徴とする画像形成装置。 A developing device for developing the electrostatic latent image formed on the image carrier,
A developer carrier that carries a developer including a toner and a carrier for developing the electrostatic latent image formed on the image carrier;
A first chamber for supplying a developer to the developer carrier,
A second chamber partitioned by the first chamber and a partition,
A first communication portion that allows the developer to communicate with the first chamber from the second chamber,
A second communication portion allowing the developer to communicate from the first chamber to the second chamber,
A first transport screw that is disposed in the first chamber and transports the developer in the first transport direction from the first communication portion toward the second communication portion during the image forming operation,
A second transport that is disposed in the second chamber and that transports the developer in the second transport direction from the second communication section toward the first communication section by rotating in the first rotation direction during the image forming operation; Screw and
A developer discharging portion disposed near the first communication portion, for discharging a part of the developer from the developing device;
A storage section for storing the initial developer, which is disposed vertically above the second transport screw,
An opening that is provided in the housing section and through which the developer can communicate with the second chamber;
A sealing sheet for sealing the opening portion and sealing the initial developer in the storage portion,
A developing device comprising:
A drive unit for rotationally driving the second transport screw,
Along with the start of the initialization operation of the developing device, a predetermined time after the sealing of the initial developer by the sealing sheet is released, the second transport screw is in a direction opposite to the first rotation direction. A control unit capable of executing a mode for controlling the drive unit to rotate and drive the second transport screw in the first rotation direction after the predetermined time has elapsed after being driven to rotate in the second rotation direction,
An image forming apparatus comprising:
ことを特徴とする請求項１に記載の画像形成装置。The image forming apparatus according to claim 1, wherein:
前記制御部は、前記受付部を介して前記所定の指示を受け付けたことに基づいて前記モードを実行する、The control unit executes the mode based on receiving the predetermined instruction via the receiving unit,
ことを特徴とする請求項１又は２に記載の画像形成装置。The image forming apparatus according to claim 1, wherein:
ことを特徴とする請求項１乃至３のいずれか１項に記載の画像形成装置。The image forming apparatus according to claim 1, wherein:
ことを特徴とする請求項１乃至４のいずれか１項に記載の画像形成装置。The image forming apparatus according to claim 1, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019153356A JP6794513B2 (en) | 2019-08-26 | 2019-08-26 | Image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019153356A JP6794513B2 (en) | 2019-08-26 | 2019-08-26 | Image forming device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2015210299A Division JP6579914B2 (en) | 2015-10-27 | 2015-10-27 | Image forming apparatus |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2019197238A JP2019197238A (en) | 2019-11-14 |
| JP2019197238A5 true JP2019197238A5 (en) | 2020-03-19 |
| JP6794513B2 JP6794513B2 (en) | 2020-12-02 |
Family
ID=68537464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2019153356A Active JP6794513B2 (en) | 2019-08-26 | 2019-08-26 | Image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6794513B2 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04240872A (en) * | 1991-01-25 | 1992-08-28 | Canon Inc | Developing device |
| JPH1165251A (en) * | 1997-08-15 | 1999-03-05 | Fuji Xerox Co Ltd | Developing device |
| US20040033083A1 (en) * | 2002-08-14 | 2004-02-19 | Toshiba Tec Kabushiki Kaisha | Electrophotographic image forming device with mixer for mixing developer and method thereof |
| JP4698341B2 (en) * | 2005-09-01 | 2011-06-08 | 株式会社リコー | Developing device, process cartridge, and image forming apparatus |
| JP5311107B2 (en) * | 2008-08-12 | 2013-10-09 | 株式会社リコー | Developing device and image forming apparatus |
| JP4492742B2 (en) * | 2008-09-19 | 2010-06-30 | コニカミノルタビジネステクノロジーズ株式会社 | Developing device and image forming apparatus |
| JP5522954B2 (en) * | 2009-02-13 | 2014-06-18 | キヤノン株式会社 | Developing device and image forming apparatus |
-
2019
- 2019-08-26 JP JP2019153356A patent/JP6794513B2/en active Active
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