JPS5640829A - Plain halftone printing method and light source for engraving - Google Patents
Plain halftone printing method and light source for engravingInfo
- Publication number
- JPS5640829A JPS5640829A JP11673079A JP11673079A JPS5640829A JP S5640829 A JPS5640829 A JP S5640829A JP 11673079 A JP11673079 A JP 11673079A JP 11673079 A JP11673079 A JP 11673079A JP S5640829 A JPS5640829 A JP S5640829A
- Authority
- JP
- Japan
- Prior art keywords
- film
- plain
- halftones
- light source
- printing
- 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
Landscapes
- Light Sources And Details Of Projection-Printing Devices (AREA)
Abstract
PURPOSE: To enable printing to be performed with one sheet of contact film without using multiple kinds of plain halftone screens by printing the necessary plain halftones in the predetermined positions of a raw film at necessary percent dot areas by using the contact screen.
CONSTITUTION: In the case of printing plain halftones in the necessary local positions 2, 2' of a raw film 1, the film 1 is covered with a cut mask 3 and windows 4, 4' corresponding to the plain halftone printing parts 2, 2' are beforehand pierced. A contact screen 5 is placed between the film 1 and the mask 3; the film 1, screen 5 and mask 3 are closely contacted and set; the light from a light source 6 is controlled of its quantity by an ND filter 7 according to need and exposes the local positions 2, 2' on the film 1 with the light past the screen 5, windows 4, 4', whereby the plain halftones are formed. A local light quantity control function is provided to the light source device 6 and the plain halftones of different percent dot areas are printed simultaneously in several positions on the film 1.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11673079A JPS5640829A (en) | 1979-09-13 | 1979-09-13 | Plain halftone printing method and light source for engraving |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11673079A JPS5640829A (en) | 1979-09-13 | 1979-09-13 | Plain halftone printing method and light source for engraving |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5640829A true JPS5640829A (en) | 1981-04-17 |
Family
ID=14694364
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11673079A Pending JPS5640829A (en) | 1979-09-13 | 1979-09-13 | Plain halftone printing method and light source for engraving |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5640829A (en) |
-
1979
- 1979-09-13 JP JP11673079A patent/JPS5640829A/en active Pending
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