JPS54148539A - Electrostatic image developing powder - Google Patents
Electrostatic image developing powderInfo
- Publication number
- JPS54148539A JPS54148539A JP5665978A JP5665978A JPS54148539A JP S54148539 A JPS54148539 A JP S54148539A JP 5665978 A JP5665978 A JP 5665978A JP 5665978 A JP5665978 A JP 5665978A JP S54148539 A JPS54148539 A JP S54148539A
- Authority
- JP
- Japan
- Prior art keywords
- pts
- resin
- give
- phthalic acid
- ortho
- 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
- Developing Agents For Electrophotography (AREA)
Abstract
PURPOSE: To enable the title powder to be charged to a uniform and stable state having an adequate amount of charge, and accordingly to always form a visible image of constant image density, by adding ortho-phthalic acid to a resin at least in its surface part.
CONSTITUTION: A resin, 100 wt. pts., such as a polymer having a phenyl ring; an ortho-phthalic acid, 0.5 to 10 wt.pts., preferably 1 to 5 wt.pts., represented by the formula (R being carboxy); colorant; charge polarity controller; etc. are kneaded, cooled, and pulverized to give a binary developing toner. Otherwise, a resin containing the formula compound may be formed as a surface layer on the surfaces of carrier kernel grains to give a binary developing carrier. Further, a resin containing the formula compound and magnetic grains dispersed may be used for a one component type developer. These permit allowable ranges to be wide in the case of variable conditions in triboelectric process, composition, preparation process, etc.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5665978A JPS54148539A (en) | 1978-05-15 | 1978-05-15 | Electrostatic image developing powder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5665978A JPS54148539A (en) | 1978-05-15 | 1978-05-15 | Electrostatic image developing powder |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54148539A true JPS54148539A (en) | 1979-11-20 |
JPS5647549B2 JPS5647549B2 (en) | 1981-11-10 |
Family
ID=13033504
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5665978A Granted JPS54148539A (en) | 1978-05-15 | 1978-05-15 | Electrostatic image developing powder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54148539A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5177337A (en) * | 1974-11-25 | 1976-07-05 | Oce Van Der Grinten Nv |
-
1978
- 1978-05-15 JP JP5665978A patent/JPS54148539A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5177337A (en) * | 1974-11-25 | 1976-07-05 | Oce Van Der Grinten Nv |
Also Published As
Publication number | Publication date |
---|---|
JPS5647549B2 (en) | 1981-11-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS55127569A (en) | Carrier for electrostatic image development | |
GB1490584A (en) | Electroscopic toner | |
JPS55157751A (en) | Carrier for developing electrostatic charge image | |
GB1501065A (en) | Electrostatic image toner compositions | |
JPS54101328A (en) | Developer for electrostatic image | |
JPS5387734A (en) | Electrophotographic magnetic toner | |
JPS54148539A (en) | Electrostatic image developing powder | |
JPS5381125A (en) | Electrophotographic magnetic toner | |
JPS5538524A (en) | Toner composition for electrophotography | |
JPS5526574A (en) | Toner for color electrophotography | |
JPS5776558A (en) | Developing method | |
JPS5548754A (en) | Magnetic toner for electrostatic charge latent image development | |
JPS56147151A (en) | Positively chargeable toner for electrophotography | |
JPS55151649A (en) | Carrier for static charge image development | |
JPS5764252A (en) | Charge type magnetic toner | |
JPS61258268A (en) | Charge providing material for developing electrostatic charge image | |
JPS53102040A (en) | Developing toner for electrostatic charged image | |
JPS61258269A (en) | Charge providing material for developing electrostatic charge image | |
JPS5710149A (en) | Toner for developing electrostatic latent image | |
JPS61258267A (en) | Charge providing material for developing electrostatic charge image | |
JPS55156957A (en) | Dry developer and its production | |
JPS56165152A (en) | Toner composition for developing electrostatic charge | |
JPS55113051A (en) | Electrophotographic receptor | |
JPS5444534A (en) | Carrier material for electrostatic image developing | |
JPS56119139A (en) | Pressure fixing toner |