JPS54103048A - Electrostatic image developer - Google Patents
Electrostatic image developerInfo
- Publication number
- JPS54103048A JPS54103048A JP916478A JP916478A JPS54103048A JP S54103048 A JPS54103048 A JP S54103048A JP 916478 A JP916478 A JP 916478A JP 916478 A JP916478 A JP 916478A JP S54103048 A JPS54103048 A JP S54103048A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- microns
- support
- electrostatic image
- layer
- 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
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
PURPOSE: To eliminate the fog in texture with the use of a magnetic toner and to completely accomplish the end portions of an image by providing non-contact developing means of two stages, in which the closest spacing between an electrostatic image holding surface and a toner thin layer and the thickness of the toner thin layer are different.
CONSTITUTION: A toner support 4 of non-magnetic cylinder is supported such that it is relatively close (or about 150 microns) to an electrostatic image holding surface 1 upon a conductive back electrode 2. The magnetic toner 11 in a reservoir 10 is attracted by and carried on the support 4 by a fixed magnet 9 thereby to form a toner layer 3 having a thickness of 80 microns having a sufficient image density with the use of a toner applying member 8. Most portion 7 of an electrostatic image is developed by a first developing means. The similar support 4' parallel with the support 4 approaches the surface 1 at a spacing of about 80 microns so that the toner layer 3' having a thickness of about 40 microns and made thinner than the layer 3 is formed. The image 12 on the surface 1 having passed through the second developing means is sufficiently developed at its both end portions.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP916478A JPS54103048A (en) | 1978-01-30 | 1978-01-30 | Electrostatic image developer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP916478A JPS54103048A (en) | 1978-01-30 | 1978-01-30 | Electrostatic image developer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54103048A true JPS54103048A (en) | 1979-08-14 |
JPS6261955B2 JPS6261955B2 (en) | 1987-12-24 |
Family
ID=11712966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP916478A Granted JPS54103048A (en) | 1978-01-30 | 1978-01-30 | Electrostatic image developer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54103048A (en) |
-
1978
- 1978-01-30 JP JP916478A patent/JPS54103048A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6261955B2 (en) | 1987-12-24 |
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