| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 1 | JPH0131180B2 - | JP2643482 | 1982-02-20 | JPH0131180B2 | 1989-06-23 | EJIMA KOZO; HAGA TOSHIO |
| 2 | UTILISATION DU TRAMAGE A MODULATION DE FREQUENCE POUR ALLEGER EN OFFSET LES SURFACES IMPRIMANTES | EP95925046.5 | 1995-07-12 | EP0770228B1 | 1998-11-11 | Nouel, Jean-Marie |
| The use of frequency-modulated or stochastic screening for lightening wet or waterless offset printing surfaces is disclosed. Films and plates which are used in such printing processes and which typically generate lighter printing surfaces by means of stochastic (or frequency-modulated) screening, are also disclosed. | ||||||
| 3 | Lithographic print and method | EP91306887.0 | 1991-07-26 | EP0524357A1 | 1993-01-27 | Axelrod, Herbert H. |
A lithographic print of a color photograph (10) which includes printed lettering in an area where the density of the ink dots which reproduce the photograph is reduced to enhance the visibility of the printed lettering. The print is prepared by superimposing a screen (14) having a substantially lower dot density over the portions of the color separation films (12, 12b, 12c and 12d) corresponding to the area reserved for lettering and preparing the engraved printing plates from these screened films. |
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| 4 | Use of frequency-modulated screening for lightening offset printing surfaces | US08765788 | 1997-01-13 | US06406833B1 | 2002-06-18 | Jean-Marie Nouel |
| The present invention relates to the use of the frequency-modulated screening or stochastic screening for lightening the printing surfaces, in waterless or wet offset printing techniques. It also concerns the films and plates used in these printing techniques which, in characteristic manner, generate printing surfaces lightened by means of a stochastic screening (or frequency-modulated screening). | ||||||
| 5 | Lithographic print and method | US483918 | 1990-02-23 | US5110156A | 1992-05-05 | Herbert R. Axelrod |
| A lithographic print of a color photograph which includes printed lettering in an area where the density of the ink dots which reproduce the photograph is reduced to enhance the visibility of the printed lettering.The print is prepared by superimposing a screen having a substantially lower dot density over the portions of the color separation films corresponding to the area reserved for lettering and preparing the engraved printing plates from these screened films. | ||||||
| 6 | Method of preparing printing plates | US40236464 | 1964-10-07 | US3413119A | 1968-11-26 | ST CLAIR JOHN P; MYLON MERRIAM; CHAMBERS EDWARD L; CLARK CLYDE A; FISCHER JR WILLIAM H; HOUSTON ROBERT J |
| 7 | Method of establishing bleed lines around designs on printing surfaces | US17121650 | 1950-06-29 | US2630384A | 1953-03-03 | DOHERTY OWEN G |
| 8 | Method of preparing printing plates | US21213138 | 1938-06-06 | US2261554A | 1941-11-04 | LENGEL ALBERT L |
| 9 | Process for producing rotogravure mounting forms | US14491226 | 1926-10-28 | US1742658A | 1930-01-07 | ERICH LOENING |
| 10 | Method of manufacturing a printing plate | US131399 | 1993-10-05 | US5392711A | 1995-02-28 | Takashi Kainuma |
| The method which comprises the steps of producing a halftone dot photograph, producing a cut out photograph by cutting out a desired portion of the photograph, adhering the cut out photograph on a transparent film, printing the front side of this film on a positive film to produce a halftone positive film, printing the backside of said film on a negative film to produce a silhouette film in which the cut out portion appears as deep-black, superposing the halftone positive film on a photosensitive resin plate to produce a photographic resin plate, turning the silhouette film upside down and superposing it on the photosensitive resin plate and exposing it to light to produce a silhouette resin plate, alternately bringing the photographic resin plate and silhouette resin plate into contact with a continuous foaming resin plate. | ||||||
| 11 | Lithographic printing process | US3581660D | 1968-12-18 | US3581660A | 1971-06-01 | RAPOPORT SIDNEY L; MITCHELL DOUGLAS F |
| A method for producing lithographic reproductions having outstanding tonal fidelity is disclosed. The new method includes the making of master and secondary printing plates from photographic images of the original copy and sequentially and in registry printing with each printing plate. Both printing plates are formed by photoengraving techniques from separate photographic negatives, each obtained by photographically exposing the original copy through a screen having an image disrupting surface pattern. The screen utilized in producing the master printing plate is a conventional square grid halftone screen, while that used in making the secondary negative has a fine irregular surface pattern.
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| 12 | Method and composition for production of combination line and halftone photoengravings | US3440048D | 1964-10-12 | US3440048A | 1969-04-22 | MARX WALTER S JR |
| 13 | Production of photographic images making use of the intensity-reversal effect | US79705659 | 1959-03-04 | US3156564A | 1964-11-10 | VON WARTBURG RENE |
| 14 | Photo printing process | US16996250 | 1950-06-23 | US2767093A | 1956-10-16 | GUSTAVE BILHOEFER FREDERICK |
| 15 | Method of incorporating lettering in printed color reproductions | US3249448 | 1948-06-11 | US2605181A | 1952-07-29 | EDWARD ALEXANDER HAROLD; FREDERICK COOK CHARLES |
| 16 | Photoengraving | US45278742 | 1942-07-29 | US2350516A | 1944-06-06 | MARX JR WALTER S |
| 17 | Process of producing halftone mask negatives | US46749242 | 1942-12-01 | US2339482A | 1944-01-18 | HUTTKAY ARTHUR L |
| 18 | Method of preparing printing plates | US69292133 | 1933-10-10 | US2048876A | 1936-07-28 | MARX JR WALTER S |
| 19 | Process of making printing surfaces | US66932633 | 1933-05-04 | US1978559A | 1934-10-30 | WILLIAM ZIMMERMANN |
| 20 | Multi-color engraving method | JP16919586 | 1986-07-17 | JPS6325659A | 1988-02-03 | HASEGAWA KAZUHITO; ABE TOKUJI |
| PURPOSE:To reduce the load of mask formation to an original by masking the concerning position of the original by a shielding color material corresponding to the color of a required color dot image or color linear image to expose the masked original before or after the exposure of the dot image or linear image at the time of photographing. CONSTITUTION:A block copy original arranged on a composition for printing out continuous multi-color photograph 2 and black characters 1, 3 is set up on an original frame. When it is defined to print out red index characters 1 and black main characters 3, a red masking body 7 is used for the position of the characters 1 to execute dot photographing and a black masking body 5 is applied to the portion of the photograph 2 in the succeeding linear image exposure. Said procedure is similarly repeated by using the same masks as an yellow plate, a Magenta plate and a cyan plate. When printing is executed by using these plates, the index characters 1, the main characters 3 and the photograph 2 are printed out respectively as red characters, black characters and a 4-color part to obtain a required print. Thus, the load of mask formation on an original can be reduced. | ||||||
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