Block
Step
Description
1 Static latent image
forming
1
Primary charging
Charge the photosensitive drum surface negatively.
2
Laser beam exposure
Form a static latent image on the photosensitive drum.
2 Development
3
Development
Deposit toner to visualize the static latent image.
3 Transfer
4
Primary transfer
Transfer the toner image on the photosensitive drum to the ITB.
5
Secondary transfer
Transfer the toner image on the ITB to the paper.
6
Separation
Separate the paper from the ITB.
4 Fixing
7
Fixing
Fix the toner image on the paper.
5 ITB cleaning
8
ITB cleaning
Clean the residual toner on the ITB.
6 Drum cleaning
9
Drum cleaning
Clean the residual toner on the photosensitive drum.
Flow of paper
Rotation of ITB/photosensitive drum
Block
Step
Static image formation block
Drum cleaning block
2. Laser beam exposure
9. Drum cleaning
1. Primary charging
4. Primary transfer
Transfer block
5. Secondary transfer
ITB cleaning
block
8. ITB cleaning
Registration
Pickup
Fixing block
Delivery
7. Fixing
6. Separation
Development
block
3. Development
■ Block 1 : Static latent image forming block
This block consists of 2 steps to form a static latent image on the photosensitive drum.
● Step 1: Primary charging
Before forming a static latent image, the photosensitive drum surface should be charged negatively.
This product employs the method to charge the photosensitive drum directly from the primary charging roller, applying the DC
negative bias in order to negatively charge the photosensitive drum surface.
DC bias
Photosensitive drum
Primary charging roller
● Step 2: Laser beam exposure
Expose the photosensitive drum with laser beams to form a static latent image.
The static latent image is formed by laser beam scanning that neutralizes or strips negative potentials on the scanned parts.
2. Technical Explanation
31
Содержание MF724Cdw
Страница 1: ...Revision 2 0 MF720 Series Service Manual ...
Страница 12: ...Product Overview 1 Product Lineups 5 Product Features 7 Specifications 8 Name of Parts 14 ...
Страница 33: ...How to release Jam Remove the jammed paper and open close the ADF upper cover 2 Technical Explanation 25 ...
Страница 79: ...4 Click Import Export Import 1 2 2 Technical Explanation 71 ...
Страница 101: ...Periodical Service 3 Periodically Replaced Parts 94 Durable Parts 95 Periodical Services 96 Cleaning 97 ...
Страница 102: ...Periodically Replaced Parts No periodically replaced parts is set for this product 3 Periodical Service 94 ...
Страница 103: ...Durable Parts No durable parts is set for this product 3 Periodical Service 95 ...
Страница 104: ...Periodical Services No periodical service is set for this product 3 Periodical Service 96 ...
Страница 232: ...Adjustment 5 Overview 225 Adjustment at Parts Replacement 226 ...
Страница 248: ...Troubleshooting 6 Test Print 241 Trouble shooting items 243 Version Upgrade 244 Debug Log 248 ...
Страница 258: ...Error Jam Alarm 7 Outline 251 Error Codes 252 Jam Code 257 ...
Страница 267: ...Service Mode 8 Overview 260 COPIER 264 FEEDER 300 FAX 302 TESTMODE 308 ...
Страница 322: ...APPENDICES Service Tools 315 General Circuit Diagram 316 Print Sequence 317 Backup Data 318 ...