JPS57200048A - Pressure fixable developer - Google Patents
Pressure fixable developerInfo
- Publication number
- JPS57200048A JPS57200048A JP56085420A JP8542081A JPS57200048A JP S57200048 A JPS57200048 A JP S57200048A JP 56085420 A JP56085420 A JP 56085420A JP 8542081 A JP8542081 A JP 8542081A JP S57200048 A JPS57200048 A JP S57200048A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- powder
- average grain
- grain sizes
- groups
- 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.)
- Pending
Links
- 239000000843 powder Substances 0.000 abstract 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 239000008119 colloidal silica Substances 0.000 abstract 2
- 230000002209 hydrophobic effect Effects 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 239000002245 particle Substances 0.000 abstract 2
- 239000004698 Polyethylene Substances 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 239000008187 granular material Substances 0.000 abstract 1
- 239000006247 magnetic powder Substances 0.000 abstract 1
- 239000012188 paraffin wax Substances 0.000 abstract 1
- -1 polyethylene Polymers 0.000 abstract 1
- 229920000573 polyethylene Polymers 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 238000001694 spray drying Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/0802—Preparation methods
- G03G9/0808—Preparation methods by dry mixing the toner components in solid or softened state
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/0802—Preparation methods
- G03G9/081—Preparation methods by mixing the toner components in a liquefied state; melt kneading; reactive mixing
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/0802—Preparation methods
- G03G9/0815—Post-treatment
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/0819—Developers with toner particles characterised by the dimensions of the particles
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Developing Agents For Electrophotography (AREA)
Abstract
PURPOSE:To obtain a toner of good pressure fixability that s fixed by a low pressure by making the average grain sizes of roughly spherical toner particle groups smaller than the average grain sizes of shapeless toner particle groups. CONSTITUTION:For example, 80pts.wt. polyethylene having of 70cps melt viscosity at 140 deg.C, 20pts.wt. 155 deg.F paraffin, 60pts.wt. magnetic powder, 2pts.wt. metallic complex salt dye and 7pts.wt. hydrophobic colloidal silica are mixed by using a ball mill, and the mixture is melted and kneaded in a roll mill. After cooling, the mixture is roughly crushed with a hammer mill, after which the granules are finely ground with a jet mill and are further classified, whereby a powder toner A1 of powder groups having 9.8mu number average grain sizes and 17.5mu is obtained. The powder groups of 9.8mu are heated by using a spray drying machine, whereby roughly spherical powder (toner B1) having 10.2mu average grain sizes is obtained. The developer of good pressure fixability is obtained by mixing 40pts.wt. toner A1, 60pts.wt. toner B1 and 0.6pt.wt. hydrophobic colloidal silica.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56085420A JPS57200048A (en) | 1981-06-02 | 1981-06-02 | Pressure fixable developer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56085420A JPS57200048A (en) | 1981-06-02 | 1981-06-02 | Pressure fixable developer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57200048A true JPS57200048A (en) | 1982-12-08 |
Family
ID=13858318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56085420A Pending JPS57200048A (en) | 1981-06-02 | 1981-06-02 | Pressure fixable developer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57200048A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2573224A1 (en) * | 1984-08-31 | 1986-05-16 | Canon Kk | PROCESS FOR PREPARING A TONER OR TONER IN CAPSULE FOR USE IN ELECTROPHOTOGRAPHY AND PRODUCTS OBTAINED |
| EP0606872A1 (en) * | 1993-01-11 | 1994-07-20 | Canon Kabushiki Kaisha | Production of toner for developing electrostatic images |
-
1981
- 1981-06-02 JP JP56085420A patent/JPS57200048A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2573224A1 (en) * | 1984-08-31 | 1986-05-16 | Canon Kk | PROCESS FOR PREPARING A TONER OR TONER IN CAPSULE FOR USE IN ELECTROPHOTOGRAPHY AND PRODUCTS OBTAINED |
| EP0606872A1 (en) * | 1993-01-11 | 1994-07-20 | Canon Kabushiki Kaisha | Production of toner for developing electrostatic images |
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