JP2017146589A5 - - Google Patents
Download PDFInfo
- Publication number
- JP2017146589A5 JP2017146589A5 JP2017004659A JP2017004659A JP2017146589A5 JP 2017146589 A5 JP2017146589 A5 JP 2017146589A5 JP 2017004659 A JP2017004659 A JP 2017004659A JP 2017004659 A JP2017004659 A JP 2017004659A JP 2017146589 A5 JP2017146589 A5 JP 2017146589A5
- Authority
- JP
- Japan
- Prior art keywords
- developer
- image
- image forming
- carrier
- mode
- 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.)
- Granted
Links
- 239000000969 carrier Substances 0.000 claims description 45
- 238000001514 detection method Methods 0.000 claims description 28
- 230000002093 peripheral Effects 0.000 claims description 17
- 238000000034 method Methods 0.000 claims 2
- 230000005484 gravity Effects 0.000 claims 1
- 230000003287 optical Effects 0.000 claims 1
Description
また、他の本発明の画像形成装置は、
現像剤像を担持するための像担持体と、
前記像担持体上の現像剤像が転写される中間転写体と、
現像剤を担持するための現像剤担持体と、
前記中間転写体上の現像剤量を検知する検知部と、
前記現像剤担持体から前記像担持体へ供給される現像剤を前記中間転写体へ転写させることにより、前記中間転写体上に前記現像剤像を形成する画像形成モードと、
前記像担持体上に検知用の現像剤像を形成し、前記検知用の現像剤像の現像剤量を前記検知部で検知する検知モードと、を備え、
前記検知モードにおける前記現像剤担持体の周速ｖ１１と前記像担持体の周速ｖ１２との周速比ｖ１１／ｖ１２をΔｖ１とし、
前記画像形成モードにおける前記現像剤担持体の周速ｖ２１と前記像担持体の周速ｖ２２との周速比ｖ２１／ｖ２２をΔｖ２とした場合に、
Δｖ１＜Δｖ２である状態で、前記検知モードにおける前記像担持体上の現像剤量の検知結果に基づき、前記画像形成モードにおける前記中間転写体上の現像剤量が推定される、ことを特徴とする。
Another image forming apparatus according to the present invention includes:
An image carrier for carrying a developer image;
An intermediate transfer member to which a developer image on the image carrier is transferred;
A developer carrier for carrying the developer;
A detector for detecting the amount of developer on the intermediate transfer member;
An image forming mode for forming the developer image on the intermediate transfer member by transferring the developer supplied from the developer carrier to the image carrier to the intermediate transfer member;
A detection mode in which a developer image for detection is formed on the image carrier and the amount of developer in the developer image for detection is detected by the detection unit ; and
The peripheral speed ratio v11 / v12 the circumferential speed v12 of the peripheral speed v11 and the image bearing member of the developer carrier before Symbol detection mode and .DELTA.v1,
When the peripheral speed ratio v21 / v22 between the peripheral speed v21 of the developer carrier and the peripheral speed v22 of the image carrier in the image forming mode is Δv2,
The developer amount on the intermediate transfer member in the image forming mode is estimated based on the detection result of the developer amount on the image carrier in the detection mode in a state where Δv1 <Δv2. To do.
Claims (13)
現像剤像を担持するための像担持体と、
現像剤を担持するための現像剤担持体と、
前記像担持体上の現像剤量を検知する検知部と、
前記現像剤担持体に担持される現像剤を前記像担持体へ供給させることにより、前記像担持体上に前記現像剤像を形成する画像形成モードと、
前記像担持体上に検知用の現像剤像を形成し、前記検知用の現像剤像の現像剤量を前記検知部で検知する検知モードと、を備え、
前記検知モードにおける前記現像剤担持体の周速ｖ１１と前記像担持体の周速ｖ１２との周速比ｖ１１／ｖ１２をΔｖ１とし、
前記画像形成モードにおける前記現像剤担持体の周速ｖ２１と前記像担持体の周速ｖ２２との周速比ｖ２１／ｖ２２をΔｖ２とした場合に、
Δｖ１＜Δｖ２である状態で、前記検知モードにおける前記像担持体上の現像剤量の検知結果に基づき、前記画像形成モードにおける前記像担持体上の現像剤量が推定される、ことを特徴とする画像形成装置。 An image forming apparatus,
An image carrier for carrying a developer image;
A developer carrier for carrying the developer;
A detector for detecting the amount of developer on the image carrier;
An image forming mode for forming the developer image on the image carrier by supplying the developer carried on the developer carrier to the image carrier;
A detection mode in which a developer image for detection is formed on the image carrier and the amount of developer in the developer image for detection is detected by the detection unit; and
A circumferential speed ratio v11 / v12 between the circumferential speed v11 of the developer carrier and the circumferential speed v12 of the image carrier in the detection mode is Δv1,
When the peripheral speed ratio v21 / v22 between the peripheral speed v21 of the developer carrier and the peripheral speed v22 of the image carrier in the image forming mode is Δv2,
The developer amount on the image carrier in the image forming mode is estimated based on the detection result of the developer amount on the image carrier in the detection mode in a state where Δv1 <Δv2. Image forming apparatus.
現像剤像を担持するための像担持体と、
前記像担持体上の現像剤像が転写される中間転写体と、
現像剤を担持するための現像剤担持体と、
前記中間転写体上の現像剤量を検知する検知部と、
前記現像剤担持体から前記像担持体へ供給される現像剤を前記中間転写体へ転写させることにより、前記中間転写体上に前記現像剤像を形成する画像形成モードと、
前記像担持体上に検知用の現像剤像を形成し、前記検知用の現像剤像の現像剤量を前記検知部で検知する検知モードと、を備え、
前記検知モードにおける前記現像剤担持体の周速ｖ１１と前記像担持体の周速ｖ１２との周速比ｖ１１／ｖ１２をΔｖ１とし、
前記画像形成モードにおける前記現像剤担持体の周速ｖ２１と前記像担持体の周速ｖ２２との周速比ｖ２１／ｖ２２をΔｖ２とした場合に、
Δｖ１＜Δｖ２である状態で、前記検知モードにおける前記像担持体上の現像剤量の検知結果に基づき、前記画像形成モードにおける前記中間転写体上の現像剤量が推定される、ことを特徴とする画像形成装置。 An image forming apparatus,
An image carrier for carrying a developer image;
An intermediate transfer member to which a developer image on the image carrier is transferred;
A developer carrier for carrying the developer;
A detector for detecting the amount of developer on the intermediate transfer member;
An image forming mode for forming the developer image on the intermediate transfer member by transferring the developer supplied from the developer carrier to the image carrier to the intermediate transfer member;
A detection mode in which a developer image for detection is formed on the image carrier and the amount of developer in the developer image for detection is detected by the detection unit ; and
The peripheral speed ratio v11 / v12 the circumferential speed v12 of the peripheral speed v11 and the image bearing member of the developer carrier before Symbol detection mode and .DELTA.v1,
When the peripheral speed ratio v21 / v22 between the peripheral speed v21 of the developer carrier and the peripheral speed v22 of the image carrier in the image forming mode is Δv2,
The developer amount on the intermediate transfer member in the image forming mode is estimated based on the detection result of the developer amount on the image carrier in the detection mode in a state where Δv1 <Δv2. Image forming apparatus.
前記像担持体の明部電位と前記現像剤担持体の現像電位とで形成される現像コントラストをΔＶｃとし、
前記現像剤担持体に担持された現像剤の単位面積当たりの電荷量をＱ／Ｓとした場合に、
前記検知モードにおいて、（Ｑ／Ｓ）×Δｖ１≦Ｃ×ΔＶｃ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。 The capacitance of the image carrier is C,
The development contrast formed by the light portion potential of the image carrier and the development potential of the developer carrier is ΔVc,
When the charge amount per unit area of the developer carried on the developer carrying body is Q / S,
The image forming apparatus according to claim 1, wherein (Q / S) × Δv1 ≦ C × ΔVc in the detection mode.
前記現像剤の平均半径をＲとし、
前記現像剤の比重をρとし、
平面上の最密充填の面積率をＨとした場合に、
前記検知モードにおいて、Δｖ１≦（４／３×Ｒ×ρ×Ｈ）／Ｇである、ことを特徴とする請求項１から３のいずれか１項に記載の画像形成装置。 G is the mass per unit area of the developer carried on the developer carrying body in the detection mode,
The average radius of the developer is R,
The specific gravity of the developer is ρ,
When the area ratio of the closest packing on the plane is H,
4. The image forming apparatus according to claim 1, wherein Δv <b> 1 ≦ (4/3 × R × ρ × H) / G in the detection mode. 5.
前記第１画像形成モードにおいける前記現像剤担持体の周速を前記ｖ２１とし、前記像担持体の周速を前記ｖ２２とし、前記現像剤担持体の周速ｖ２１と前記像担持体の周速ｖ２２との周速比ｖ２１／ｖ２２を前記Δｖ２とし、
前記第２画像形成モードにおける前記現像剤担持体の周速をｖ３１と前記像担持体の周速ｖ３２との周速比ｖ３１／ｖ３２をΔｖ３とした場合に、
Δｖ３＜Δｖ２である、ことを特徴とする請求項１から８のいずれか１項に記載の画像形成装置。 The image forming mode further includes a first image forming mode and a second image forming mode,
In the first image forming mode, the peripheral speed of the developer carrier is v21, the peripheral speed of the image carrier is v22, the peripheral speed v21 of the developer carrier and the peripheral speed of the image carrier. The circumferential speed ratio v21 / v22 with respect to the speed v22 is Δv2, and
When the circumferential speed ratio v31 / v32 between the circumferential speed v31 and the circumferential speed v32 of the image carrier is Δv3 in the second image forming mode,
9. The image forming apparatus according to claim 1, wherein Δv <b> 3 <Δv <b> 2.
画像形成装置の本体に前記プロセスカートリッジが装着されてから最初の画像形成動作を行う前に前記検知部で検出した信号をもとに、前記検知モードで検出した信号を補正する、ことを特徴とする請求項１から１０のいずれか１項に記載の画像形成装置。 Having the image carrier and the developer carrier, and having a process cartridge attachable to an image forming apparatus;
The signal detected in the detection mode is corrected based on the signal detected by the detection unit before performing the first image forming operation after the process cartridge is mounted on the main body of the image forming apparatus. The image forming apparatus according to any one of claims 1 to 10.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710070574.XA CN107092172B (en) | 2016-02-17 | 2017-02-09 | Image forming apparatus with a toner supply device |
| US15/433,784 US10018939B2 (en) | 2016-02-17 | 2017-02-15 | Electrophotographic or electrostatic recording type image forming apparatus |
| EP17156483.4A EP3208660B1 (en) | 2016-02-17 | 2017-02-16 | Image forming apparatus |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016028396 | 2016-02-17 | ||
| JP2016028396 | 2016-02-17 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2017146589A JP2017146589A (en) | 2017-08-24 |
| JP2017146589A5 true JP2017146589A5 (en) | 2017-10-05 |
| JP6900196B2 JP6900196B2 (en) | 2021-07-07 |
Family
ID=59682222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2017004659A Active JP6900196B2 (en) | 2016-02-17 | 2017-01-13 | Image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6900196B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7051345B2 (en) * | 2017-09-19 | 2022-04-11 | キヤノン株式会社 | Image forming device and its control method, and program |
| JP6882240B2 (en) | 2018-09-14 | 2021-06-02 | キヤノン株式会社 | Image forming device |
| JP7289732B2 (en) * | 2019-06-07 | 2023-06-12 | キヤノン株式会社 | image forming device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0950155A (en) * | 1995-08-10 | 1997-02-18 | Konica Corp | Image forming device |
| JP4560397B2 (en) * | 2004-12-14 | 2010-10-13 | キヤノン株式会社 | Image forming apparatus |
| JP2006201608A (en) * | 2005-01-21 | 2006-08-03 | Canon Inc | Image forming apparatus and its control method |
| KR101427239B1 (en) * | 2007-06-14 | 2014-08-07 | 삼성전자주식회사 | Image forming apparatus and method for controlling velocity ratio thereof |
| JP2011007923A (en) * | 2009-06-24 | 2011-01-13 | Konica Minolta Business Technologies Inc | Image forming apparatus |
| JP5882645B2 (en) * | 2011-09-14 | 2016-03-09 | キヤノン株式会社 | Image forming apparatus |
| JP5272105B2 (en) * | 2012-11-12 | 2013-08-28 | 京セラドキュメントソリューションズ株式会社 | Image forming apparatus |
-
2017
- 2017-01-13 JP JP2017004659A patent/JP6900196B2/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2017146589A5 (en) | ||
| JP2011180318A5 (en) | ||
| JP2009053612A5 (en) | ||
| JP2008309941A5 (en) | ||
| RU2013120526A (en) | DEVICE FOR IMAGE FORMATION | |
| JP2011133870A5 (en) | ||
| JP2009271270A5 (en) | ||
| JP2016090650A5 (en) | ||
| EP2315079A3 (en) | Image forming apparatus | |
| JP2010019936A5 (en) | ||
| EP4246240A3 (en) | Image formation device | |
| JP2015007738A5 (en) | ||
| JP2007072289A5 (en) | ||
| JP2014215598A5 (en) | ||
| JP2017173462A5 (en) | ||
| JP2001051489A5 (en) | ||
| JP2018146740A5 (en) | ||
| JP2004184988A5 (en) | ||
| CN102608896B (en) | Image processing system and image forming method | |
| JP2016006497A5 (en) | ||
| JP2015161688A5 (en) | ||
| US10990039B2 (en) | Layer thickness in print agent concentration apparatus | |
| JP2010139869A5 (en) | ||
| JP2015004958A5 (en) | ||
| JP2016033579A5 (en) |