JPS5564255A - Donor in powder contrography - Google Patents
Donor in powder contrographyInfo
- Publication number
- JPS5564255A JPS5564255A JP13668678A JP13668678A JPS5564255A JP S5564255 A JPS5564255 A JP S5564255A JP 13668678 A JP13668678 A JP 13668678A JP 13668678 A JP13668678 A JP 13668678A JP S5564255 A JPS5564255 A JP S5564255A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- recording
- generator
- counter electrode
- face
- 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
- Dot-Matrix Printers And Others (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
- Electrophotography Using Other Than Carlson'S Method (AREA)
- Magnetic Brush Developing In Electrophotography (AREA)
Abstract
PURPOSE:To perform recording with good images of high image density without any ground soiling by forming one or plural lengths of rindge form protrusions parallel to generator to the circumferential face portions of a counter electrode opposing to a recording electrode. CONSTITUTION:A donor 20 is constituted by a counter electrode 21 and a magnet roller 22. The electrode 21 is formed to a hollow cylindrical shape by non-magnetic material and with the direction of its generator being made parallel to the lengthwise direction of a recording electrode 1, it is fixed in the fixed position of the apparatus space so as to oppose to the end face buried with needle electrode over the direction of the generator by leaving the specified spacing from said end face. A ridge-form protrusion 21A is formed in one length parallel to the generator in the circumferential surface portion of the counter electrode 21 opposing to the electrode 1, across the generator direction to increase the density of the electric lines of force in the recording part and make the injection of charges to toner T and transfer of the toner T to a recording sheet S easy. As a result, recording may be performed with the good images of high image density.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13668678A JPS5564255A (en) | 1978-11-08 | 1978-11-08 | Donor in powder contrography |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13668678A JPS5564255A (en) | 1978-11-08 | 1978-11-08 | Donor in powder contrography |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5564255A true JPS5564255A (en) | 1980-05-14 |
JPS6144311B2 JPS6144311B2 (en) | 1986-10-02 |
Family
ID=15181094
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13668678A Granted JPS5564255A (en) | 1978-11-08 | 1978-11-08 | Donor in powder contrography |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5564255A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6145964A (en) * | 1995-04-19 | 2000-11-14 | Pelikan Produktions Ag | Contragraphy apparatus having an electrode arrangement useful for contragraphy printing |
-
1978
- 1978-11-08 JP JP13668678A patent/JPS5564255A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6145964A (en) * | 1995-04-19 | 2000-11-14 | Pelikan Produktions Ag | Contragraphy apparatus having an electrode arrangement useful for contragraphy printing |
Also Published As
Publication number | Publication date |
---|---|
JPS6144311B2 (en) | 1986-10-02 |
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