JP7493976B2 - 画像形成装置 - Google Patents
画像形成装置 Download PDFInfo
- Publication number
- JP7493976B2 JP7493976B2 JP2020060759A JP2020060759A JP7493976B2 JP 7493976 B2 JP7493976 B2 JP 7493976B2 JP 2020060759 A JP2020060759 A JP 2020060759A JP 2020060759 A JP2020060759 A JP 2020060759A JP 7493976 B2 JP7493976 B2 JP 7493976B2
- Authority
- JP
- Japan
- Prior art keywords
- paper dust
- roller
- diameter
- transfer
- photosensitive drum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004140 cleaning Methods 0.000 claims description 54
- 239000000463 material Substances 0.000 claims description 6
- 239000000428 dust Substances 0.000 description 151
- 238000000034 method Methods 0.000 description 25
- 238000011109 contamination Methods 0.000 description 18
- 230000008569 process Effects 0.000 description 16
- 230000007246 mechanism Effects 0.000 description 12
- 230000007547 defect Effects 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 8
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 108091008695 photoreceptors Proteins 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 210000000497 foam cell Anatomy 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 230000037406 food intake Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
- G03G21/0058—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium using a roller or a polygonal rotating cleaning member; Details thereof, e.g. surface structure
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
- G03G15/0818—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by the structure of the donor member, e.g. surface properties
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
- G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
- G03G15/1665—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer by introducing the second base in the nip formed by the recording member and at least one transfer member, e.g. in combination with bias or heat
- G03G15/167—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer by introducing the second base in the nip formed by the recording member and at least one transfer member, e.g. in combination with bias or heat at least one of the recording member or the transfer member being rotatable during the transfer
- G03G15/1685—Structure, details of the transfer member, e.g. chemical composition
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
- G03G21/0064—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium using the developing unit, e.g. cleanerless or multi-cycle apparatus
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
- G03G21/007—Arrangement or disposition of parts of the cleaning unit
- G03G21/0076—Plural or sequential cleaning devices
- G03G21/0082—Separate cleaning member for toner and debris
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
- G03G2221/0026—Cleaning of foreign matter, e.g. paper powder, from imaging member
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
- G03G2221/0026—Cleaning of foreign matter, e.g. paper powder, from imaging member
- G03G2221/0031—Type of foreign matter
- G03G2221/0042—Paper powder and other dry foreign matter
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
- G03G2221/0026—Cleaning of foreign matter, e.g. paper powder, from imaging member
- G03G2221/0047—Type of cleaning device
- G03G2221/0063—Cleaning device for foreign matter separate from residual toner cleaning device
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Cleaning In Electrography (AREA)
- Dry Development In Electrophotography (AREA)
- Electrophotography Configuration And Component (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Description
図1に電子写真方式の画像形成装置の一例を示す。画像形成装置本体Mには、被帯電体としてのドラム型の像担持体1(以下、ドラムと称す)が配置されている。感光ドラム1(像担持体1)は、Φ30mmで有機光半導体感光層を形成したものであり、矢印R1方向に所定のプロセススピード(周速度)で回転駆動される。
次に比較例(従来例)に対する本実施例の構成と優位性について表6にまとめたので説明する。
比較例1や2の現像ローラの径は、クリーニングローラや転写ローラよりも径が大きい構成である。この場合、紙粉が多く発生する状況で、クリーニングローラで回収できなかった紙粉は、現像ローラとドラム間のニップ幅が大きいため、ドラムから現像ローラへ紙粉が行きやすい。また、現像ローラに対して転写ローラの径が小さいと紙の搬送性に悪化し、現像ローラに対してクリーニングローラの径が小さいと紙粉の回収しにくくなるという弊害もある。
比較例の現像ローラの径はクリーニングローラや転写ローラよりも径が大きい構成であり、この場合、紙粉が多く発生する状況で、クリーニングローラで回収できなかった紙粉は、ドラムから現像ローラへ紙粉が行きやすい。
1 ドラム
2 一次帯電器
3 レーザー露光
4 トナー
5 プロセスカートリッジ(現像ユニット)
6 記録紙(紙)
7 転写残トナー
8 転写ローラ
9 供給ローラ
10 定着器
11 クリーニングローラ
12 現像ブレード
13 紙粉回収ローラ
14 プロセスカートリッジ(ドラムユニット)
15 搬送ローラ
16 紙粉
Claims (4)
- 感光ドラムと、
前記感光ドラムに接触し前記感光ドラム上に現像剤を供給する現像ローラと、
前記感光ドラムに接触し前記感光ドラム上に形成された現像剤像を記録材に転写するための転写ローラと、
前記感光ドラムに接触し前記感光ドラム上に付着した記録材の一部をクリーニングするためのクリーニングローラと、を有し、
前記転写ローラの直径と、前記現像ローラの直径と、前記クリーニングローラの直径の長さは、
前記転写ローラの直径>前記現像ローラの直径、
且つ前記クリーニングローラの直径>前記現像ローラの直径、
を満たすことを特徴とする画像形成装置。 - 前記現像ローラの径は、像担持体の径に対する比が0.467以下であることを特徴とする請求項1に記載の画像形成装置。
- 前記現像ローラの径は、Φ14mm以下である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。
- 前記感光ドラム、現像ローラ、転写ローラ及びクリーニングローラは、着脱可能な同一カートリッジ内に配置されていることを特徴とする請求項1乃至3の何れか1項に記載の画像形成装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020060759A JP7493976B2 (ja) | 2020-03-30 | 2020-03-30 | 画像形成装置 |
US17/208,895 US11209768B2 (en) | 2020-03-30 | 2021-03-22 | Image forming apparatus capable of suppressing image defects caused by paper dust |
US17/534,277 US11526115B2 (en) | 2020-03-30 | 2021-11-23 | Image forming apparatus capable of suppressing image defects caused by paper dust |
US18/053,977 US20230093245A1 (en) | 2020-03-30 | 2022-11-09 | Image forming apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020060759A JP7493976B2 (ja) | 2020-03-30 | 2020-03-30 | 画像形成装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2021162611A JP2021162611A (ja) | 2021-10-11 |
JP7493976B2 true JP7493976B2 (ja) | 2024-06-03 |
Family
ID=77855876
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2020060759A Active JP7493976B2 (ja) | 2020-03-30 | 2020-03-30 | 画像形成装置 |
Country Status (2)
Country | Link |
---|---|
US (3) | US11209768B2 (ja) |
JP (1) | JP7493976B2 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7493976B2 (ja) * | 2020-03-30 | 2024-06-03 | キヤノン株式会社 | 画像形成装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040179082A1 (en) | 2003-03-12 | 2004-09-16 | Toshiba Tec Kabushiki Kaisha | Image forming apparatus |
JP2009157310A (ja) | 2007-12-28 | 2009-07-16 | Brother Ind Ltd | 画像形成装置 |
JP2013178419A (ja) | 2012-02-29 | 2013-09-09 | Brother Ind Ltd | 画像形成装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09244408A (ja) | 1996-03-04 | 1997-09-19 | Ricoh Co Ltd | 画像形成方法及び乾式トナー |
JP4183216B2 (ja) | 1999-08-24 | 2008-11-19 | キヤノン株式会社 | 現像ローラ及びその現像装置 |
JP4061854B2 (ja) | 2000-03-24 | 2008-03-19 | 富士ゼロックス株式会社 | 画像形成装置 |
JP2002287598A (ja) * | 2001-03-28 | 2002-10-03 | Brother Ind Ltd | 画像形成装置 |
JP2013097151A (ja) * | 2011-10-31 | 2013-05-20 | Brother Ind Ltd | プロセスユニットおよび画像形成装置 |
JP6123709B2 (ja) * | 2014-03-07 | 2017-05-10 | ブラザー工業株式会社 | プロセスカートリッジ |
JP2016145883A (ja) | 2015-02-06 | 2016-08-12 | ブラザー工業株式会社 | 感光体カートリッジ |
JP7493976B2 (ja) * | 2020-03-30 | 2024-06-03 | キヤノン株式会社 | 画像形成装置 |
-
2020
- 2020-03-30 JP JP2020060759A patent/JP7493976B2/ja active Active
-
2021
- 2021-03-22 US US17/208,895 patent/US11209768B2/en active Active
- 2021-11-23 US US17/534,277 patent/US11526115B2/en active Active
-
2022
- 2022-11-09 US US18/053,977 patent/US20230093245A1/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040179082A1 (en) | 2003-03-12 | 2004-09-16 | Toshiba Tec Kabushiki Kaisha | Image forming apparatus |
JP2009157310A (ja) | 2007-12-28 | 2009-07-16 | Brother Ind Ltd | 画像形成装置 |
JP2013178419A (ja) | 2012-02-29 | 2013-09-09 | Brother Ind Ltd | 画像形成装置 |
Also Published As
Publication number | Publication date |
---|---|
US11526115B2 (en) | 2022-12-13 |
US20210302902A1 (en) | 2021-09-30 |
US11209768B2 (en) | 2021-12-28 |
JP2021162611A (ja) | 2021-10-11 |
US20230093245A1 (en) | 2023-03-23 |
US20220082987A1 (en) | 2022-03-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6744994B2 (en) | Image forming apparatus with environmentally-controlled first and second charging members | |
JP2010001122A (ja) | 給紙装置、画像形成装置、及び給紙方法 | |
JP6759708B2 (ja) | 画像形成装置および制御方法 | |
JP2007279431A (ja) | 画像形成装置 | |
US7383003B2 (en) | Developing apparatus for preventing ghost images and uneven image density | |
JP5155982B2 (ja) | クリーニング装置及びこれを備えた画像形成装置 | |
JP2007187845A (ja) | 固形潤滑剤、クリーニング装置、プロセスカートリッジ及び画像形成装置 | |
JP7493976B2 (ja) | 画像形成装置 | |
JP4343612B2 (ja) | 画像形成装置 | |
US7167665B2 (en) | Foreign material removing system, method of removing foreign material, printing apparatus and printing method | |
JP2008129443A (ja) | クリーニングユニット・ベルトユニット・画像形成装置 | |
JP4578130B2 (ja) | 画像形成装置における像担持体の研磨方法及び画像形成装置 | |
JP5251622B2 (ja) | 画像形成装置 | |
JP2004004778A (ja) | クリーニング装置および画像形成装置 | |
US8995861B2 (en) | Image forming apparatus | |
JP2007304303A (ja) | 画像形成装置 | |
JP5216745B2 (ja) | 画像形成装置 | |
JP5212027B2 (ja) | 画像形成装置 | |
JP3888675B2 (ja) | クリーニング装置及び該クリーニング装置を有する画像形成装置 | |
JP3484910B2 (ja) | 画像形成装置 | |
JP2011180245A (ja) | 帯電装置 | |
JP2009042496A (ja) | クリーニングブレード、クリーニング装置、プロセスカートリッジ及び画像形成装置 | |
JP4349885B2 (ja) | 画像形成装置 | |
JP2005031384A (ja) | 画像形成装置 | |
JP2004138816A (ja) | クリーニング装置及び画像形成装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
RD01 | Notification of change of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7421 Effective date: 20200616 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20230317 |
|
RD01 | Notification of change of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7421 Effective date: 20231213 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20231222 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20240109 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20240304 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20240423 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20240522 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 7493976 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |