GB999260A - Electrostatic printer - Google Patents
Electrostatic printerInfo
- Publication number
- GB999260A GB999260A GB2713661A GB2713661A GB999260A GB 999260 A GB999260 A GB 999260A GB 2713661 A GB2713661 A GB 2713661A GB 2713661 A GB2713661 A GB 2713661A GB 999260 A GB999260 A GB 999260A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rings
- coupling
- electrodes
- effected
- pulse
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/385—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material
- B41J2/41—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material for electrostatic printing
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
- G03G15/32—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is formed dotwise, e.g. by a thermal head
- G03G15/321—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is formed dotwise, e.g. by a thermal head by charge transfer onto the recording material in accordance with the image
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
- Electrophotography Using Other Than Carlson'S Method (AREA)
Abstract
999,260. Selective printing. RANK-XEROX Ltd. July 26, 1961, No. 27136/61. Heading B6F. An electrostatic printer in which printing is effected by the application of at least two pulses comprises, a rotatable cylinder 10, a number of character - bearing conductive rings 30 insulated from one another at 31, print electrodes 11 defining print gaps across which an electrical discharge is effected to apply an electrostatic charge to a record material fed through the gap, and coupling electrodes 33 closely spaced from the rings for coupling the outputs of electrical pulse generators to the rings 30. This arrangement overcomes the contradictory requirements of capacitors C1, 25, Fig. 2, in previous machines not using a coupling electrode 33. In the arrangement of the present invention, Fig. 4, a steady D.C. bias is applied from 34, a long pulse is applied to the electrode 33 from the pulse generators 17 and a short pulse is applied from input source 24 which is sufficient to increase the two previous potentials from 34 and 17 to effect static discharge to form an image on the web. In a modification (Fig. 6, not shown), small coupling electrodes 3C coact with smooth conductive shoulder areas 35 alongside the character rings 30. Specification 889,663 is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2713661A GB999260A (en) | 1961-07-26 | 1961-07-26 | Electrostatic printer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2713661A GB999260A (en) | 1961-07-26 | 1961-07-26 | Electrostatic printer |
Publications (1)
Publication Number | Publication Date |
---|---|
GB999260A true GB999260A (en) | 1965-07-21 |
Family
ID=10254811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2713661A Expired GB999260A (en) | 1961-07-26 | 1961-07-26 | Electrostatic printer |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB999260A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2315079A1 (en) * | 1975-06-17 | 1977-01-14 | Cellophane Sa | High speed electrographic paper recorder - feeds paper between conducting cylinder and cylinder built up from insulated discs |
FR2589274A1 (en) * | 1985-10-28 | 1987-04-30 | Telephonie Ind Commerciale | ELECTROSTATIC PRINTING HEAD |
-
1961
- 1961-07-26 GB GB2713661A patent/GB999260A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2315079A1 (en) * | 1975-06-17 | 1977-01-14 | Cellophane Sa | High speed electrographic paper recorder - feeds paper between conducting cylinder and cylinder built up from insulated discs |
FR2589274A1 (en) * | 1985-10-28 | 1987-04-30 | Telephonie Ind Commerciale | ELECTROSTATIC PRINTING HEAD |
EP0221453A1 (en) * | 1985-10-28 | 1987-05-13 | Alcatel Business Systems | Electrostatic print head |
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