GB901533A - Image forming apparatus and method - Google Patents
Image forming apparatus and methodInfo
- Publication number
- GB901533A GB901533A GB3154758A GB3154758A GB901533A GB 901533 A GB901533 A GB 901533A GB 3154758 A GB3154758 A GB 3154758A GB 3154758 A GB3154758 A GB 3154758A GB 901533 A GB901533 A GB 901533A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drum
- electrode
- pulse
- web
- character
- 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
-
- 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
- G03G15/34—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 powder image is formed directly on the recording material, e.g. by using a liquid toner
- G03G15/344—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 powder image is formed directly on the recording material, e.g. by using a liquid toner by selectively transferring the powder to the recording medium, e.g. by using a LED array
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
- G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
- G06K15/14—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by electrographic printing, e.g. xerography; by magnetographic printing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Printing Methods (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
Abstract
901,533. Printing processes. RANKXEROX Ltd. Oct. 2, 1958 [Oct. 2, 1957], No. 31547/58. Class 100 (2). In a method of recording characters, an insulating layer, having its surface coated with electroscopic material, is placed with its coating against an image-receiving surface and an electric field is applied in image configuration so that a quantity of electroscopic material in corresponding image configuration is transferred to the receiving surface. The field is produced between a character face and a plain electrode. The character face is spaced from 2 to 250 microns from the adjacent layer, which may be the insulating layer or the receiving surface, and the field strength is from 6 to 40 volts per micron. The field produced between the type slug 13, Fig. 1, and the electrode 14 by the battery 16 is insufficient to transfer the material 15 from the layer 12 to the surface 11, but when the switch 17 is closed, an additional pulse from the battery 18 causes transfer. Alternatively, on depressing and raising a contact arm 20 while the contact arm 9 is in the opposite position to that shown, a condenser 21 is first charged, and then discharged through the primary of a transformer 23, producing a transfer pulse in the secondary. In another form, Fig. 2, the receiving surface is a web 11 fed from a roll 42 between a series of electrodes 36 and a rotatable cylinder 32 of dry paper, plastic, or other insulating material carrying electroscopic powder coated thereon by a brush 40, and past an image-fusing hot plate 43. Independently rotatable within the cylinder 32 is a conductive drum 30 including a plurality of axially-spaced annular rings each bearing in relief the letters of the alphabet and the numerals, the drum 30 being rotated one revolution for each line-space feed of the web. Rotating with the drum is an iron disc 35 having a series of slots, or a disc carrying a series of magnetic spots, the slots or spots corresponding to the characters and which in passing a magnet 125 causes a pulse to be passed to an input storing circuit 122, which also receives a character signal from a computer through a condenser 121. When the required character is passing the electrode 36, there being an electrode and pulsing circuit for each character ring, the correspondence of the signals from the conductors 123, 121 causes a pulse to the grid of a triode 119 and a transfer pulse to the corresponding electrode 36. A second disc having one magnetic spot may be provided as a drum revolution counter. Alternatively, the insulating layer may be a web pre-coated with electroscopic material, fed between rolls and between the web 11 and the drum 30 being supported on discs at the ends of and slightly larger than the drum. Specification 734,909 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US68769857A | 1957-10-02 | 1957-10-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB901533A true GB901533A (en) | 1962-07-18 |
Family
ID=24761453
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3154758A Expired GB901533A (en) | 1957-10-02 | 1958-10-02 | Image forming apparatus and method |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB901533A (en) |
-
1958
- 1958-10-02 GB GB3154758A patent/GB901533A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2777745A (en) | Electrostatic recording apparatus | |
US3081698A (en) | Electrostatic printing system | |
US3257222A (en) | Electrostatic recording method and apparatus using shaped electrodes | |
ES326154A1 (en) | Electrography | |
US2953470A (en) | Method for electrostatic printing | |
GB740162A (en) | Improvements in or relating to method of and apparatus for printing | |
GB1319148A (en) | Electrostatic reproduction apparatus and method | |
GB1208474A (en) | Electroconductive layers for use in electrographic and electrophotographic recording elements | |
US3739087A (en) | Multi point distributor head for signal recording or the like | |
JPS5451852A (en) | Wet type direct recording method | |
US3441938A (en) | Electrostatic and magnetic recording method | |
GB1182683A (en) | Electrographic Apparatus | |
GB901533A (en) | Image forming apparatus and method | |
US3289209A (en) | Electrostatic matrix printer | |
US3345944A (en) | Duplication of electrostatic printing | |
GB893842A (en) | Electrographic recording process | |
US3449753A (en) | Apparatus for controlling contrast in electrostatic printers | |
GB926723A (en) | Electrostatic recording | |
GB987234A (en) | Process and apparatus for forming an electrostatic charge pattern | |
US3354464A (en) | Method of electrostatic printing of multiple copies | |
GB1480588A (en) | Dielectrographic recording apparatus and method | |
US3383697A (en) | Nonimpact drum printer with multiple interrelated printing stations | |
GB1092913A (en) | Apparatus for electrostatic printing | |
US3890621A (en) | Electrographic devices for the non-electrostatic duplication of originals provided with a conductivity pattern formed from indicia and blank areas | |
GB1040371A (en) | Improvements in electrostatic image reproduction |