公开(公告)号：US3564131A

公开(公告)日：1971-02-16

申请号：US3564131D

申请日：1967-12-22

Applicant: RCA CORP

Inventor： HEROLD EDWARD W ,  FISCHBECK KENNETH H

IPC: B23K26/08 ,  G02F1/00 ,  H04N1/405 ,  H04N5/84

CPC classification number: G02F1/00 ,  B23K26/0853 ,  H04N1/4051

Abstract: A halftone image generation system produces a replica of an original continuous tone pattern by utilizing halftone dots of substantially the same size. The continuous tones in the original pattern are duplicated in the halftone image thereof by varying the spacing between the halftone dots. The spaces between the halftone dots are, for example, small when a dense tone is duplicated, whereas the spacing is made larger when a less dense tone is duplicated. The halftone dot generator in the system may, for example, comprise an electronic imaging device that generates the halftone dots in the form of light radiation for focusing onto photographic film; or an optical device, such as a laser, that forms the halftone dots a indentations or cavities on a printing plate, or similar devices.

公开(公告)号：US3410203A

公开(公告)日：1968-11-12

申请号：US61328267

申请日：1967-02-01

Applicant: RCA CORP

Inventor： FISCHBECK KENNETH H

IPC: B41M5/26 ,  G03B15/00 ,  G03H1/00

CPC classification number: G03H1/0005 ,  B41M5/26 ,  G03B15/00 ,  G03H1/2249 ,  G03H1/2286 ,  G03H2001/0094 ,  G03H2001/0413 ,  G03H2001/2231 ,  G03H2210/20 ,  G03H2250/42 ,  Y10S101/37