GB684478A - Improvements in or relating to method and apparatus for preventing offset in printing - Google Patents
Improvements in or relating to method and apparatus for preventing offset in printingInfo
- Publication number
- GB684478A GB684478A GB1210749A GB1210749A GB684478A GB 684478 A GB684478 A GB 684478A GB 1210749 A GB1210749 A GB 1210749A GB 1210749 A GB1210749 A GB 1210749A GB 684478 A GB684478 A GB 684478A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wires
- printing
- electrode
- sheet
- rectified
- 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
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/06—Powdering devices, e.g. for preventing set-off
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigging Conveyors (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
684,478. Printing. BROWN, BIBBY & GREGORY, Ltd., and SNODIN, W. D. May 8, 1950 [May 6, 1949], No. 12107/49. Class 100 (ii). [Also in Group XXIX] Set-off preventing.-In the electrostatic application of anti-offset material 17 to a printed web or sheet 40, one or more vibratory members, such as wires 19, 20, 21 or cords, are.provided within or adjacent the path of deposition of the material to reduce coagulation thereof. In the device shown, which resembles, that of Fig. 4 of Specification 596,540, the wires 19, 20, 21 are adjustably stretched between nuts and bolts in the end plates of the hopper 10; the H.F. or L.F. alternating or rectified potential applied to the electrode 18 causes the wires to vibrate in a circular motion whereby the material 17 falling from the lower part of the roller 11 as it is driven anti-clockwise is deposited evenly on the transversely moving web or sheet 40. The supply may be obtained through a transformer, and if it is rectified the electrode 18 may be periodically discharged to earth by a spark gap across a capacitor and in series with a resistor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1210749A GB684478A (en) | 1949-05-06 | 1949-05-06 | Improvements in or relating to method and apparatus for preventing offset in printing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1210749A GB684478A (en) | 1949-05-06 | 1949-05-06 | Improvements in or relating to method and apparatus for preventing offset in printing |
Publications (1)
Publication Number | Publication Date |
---|---|
GB684478A true GB684478A (en) | 1952-12-17 |
Family
ID=9998512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1210749A Expired GB684478A (en) | 1949-05-06 | 1949-05-06 | Improvements in or relating to method and apparatus for preventing offset in printing |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB684478A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3536440A (en) * | 1966-06-03 | 1970-10-27 | Bayer Ag | Process for the dyeing and printing of fibre substrates |
CN102642391A (en) * | 2012-05-15 | 2012-08-22 | 上海美声服饰辅料有限公司 | Powder spreading machine |
-
1949
- 1949-05-06 GB GB1210749A patent/GB684478A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3536440A (en) * | 1966-06-03 | 1970-10-27 | Bayer Ag | Process for the dyeing and printing of fibre substrates |
CN102642391A (en) * | 2012-05-15 | 2012-08-22 | 上海美声服饰辅料有限公司 | Powder spreading machine |
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