FR2454646A1 - Procede pour ameliorer la densite maximale et l'intervalle des tonalites des images electrographiques et appareil pour la mise en oeuvre de ce procede - Google Patents
Procede pour ameliorer la densite maximale et l'intervalle des tonalites des images electrographiques et appareil pour la mise en oeuvre de ce procedeInfo
- Publication number
- FR2454646A1 FR2454646A1 FR8008381A FR8008381A FR2454646A1 FR 2454646 A1 FR2454646 A1 FR 2454646A1 FR 8008381 A FR8008381 A FR 8008381A FR 8008381 A FR8008381 A FR 8008381A FR 2454646 A1 FR2454646 A1 FR 2454646A1
- Authority
- FR
- France
- Prior art keywords
- maximum density
- toner
- tones
- interval
- improving
- 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.)
- Granted
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
- G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
- G03G15/04027—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material and forming half-tone image
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electrophotography Using Other Than Carlson'S Method (AREA)
- Dry Development In Electrophotography (AREA)
- Combination Of More Than One Step In Electrophotography (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Magnetic Brush Developing In Electrophotography (AREA)
- Photoreceptors In Electrophotography (AREA)
- Liquid Crystal (AREA)
- Paper (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US3066879A | 1979-04-16 | 1979-04-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2454646A1 true FR2454646A1 (fr) | 1980-11-14 |
FR2454646B1 FR2454646B1 (de) | 1983-12-09 |
Family
ID=21855368
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8008381A Granted FR2454646A1 (fr) | 1979-04-16 | 1980-04-15 | Procede pour ameliorer la densite maximale et l'intervalle des tonalites des images electrographiques et appareil pour la mise en oeuvre de ce procede |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0018742B2 (de) |
JP (1) | JPS5619067A (de) |
AT (1) | ATE4435T1 (de) |
AU (1) | AU536674B2 (de) |
BR (1) | BR8002337A (de) |
DE (2) | DE3014449C2 (de) |
FR (1) | FR2454646A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8400922A (nl) * | 1984-03-23 | 1985-10-16 | Oce Nederland Bv | Werkwijze voor het vervaardigen van kopieen. |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3335003A (en) * | 1963-10-09 | 1967-08-08 | Xerox Corp | Reflex xerographic process |
US3341326A (en) * | 1962-10-01 | 1967-09-12 | Xerox Corp | Dark decay controlled xerography |
US3627526A (en) * | 1969-12-29 | 1971-12-14 | Rca Corp | Electrophotographic recording elements with half-tone screen coatings thereon |
US3681071A (en) * | 1970-01-02 | 1972-08-01 | Rca Corp | Method of pressure treating electrophotographic recording elements to change their sensitivity to light |
US4076857A (en) * | 1976-06-28 | 1978-02-28 | Eastman Kodak Company | Process for developing electrographic images by causing electrical breakdown in the developer |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2598732A (en) * | 1949-03-09 | 1952-06-03 | Haloid Co | Electrophotography |
DE1175985B (de) * | 1959-11-05 | 1964-08-13 | Agfa Ag | Verfahren zur Herstellung elektro-photographischer Bilder |
US3337339A (en) * | 1962-10-01 | 1967-08-22 | Xerox Corp | Screen xerography |
ZA73911B (en) * | 1972-03-15 | 1973-11-28 | Minnesota Mining & Mfg | Electrographic development process |
US3905822A (en) * | 1973-10-23 | 1975-09-16 | Xerox Corp | Compound screen for object screening |
US4051536A (en) * | 1975-03-14 | 1977-09-27 | Xerox Corporation | Electronic halftone imaging system |
US4083632A (en) * | 1976-04-05 | 1978-04-11 | Xerox Corporation | Multi-frequency screen |
JPS52143826A (en) * | 1976-05-26 | 1977-11-30 | Mita Industrial Co Ltd | Electric recording method |
-
1980
- 1980-04-15 EP EP80301189A patent/EP0018742B2/de not_active Expired
- 1980-04-15 AT AT80301189T patent/ATE4435T1/de not_active IP Right Cessation
- 1980-04-15 DE DE3014449A patent/DE3014449C2/de not_active Expired
- 1980-04-15 DE DE8080301189T patent/DE3064518D1/de not_active Expired
- 1980-04-15 BR BR8002337A patent/BR8002337A/pt unknown
- 1980-04-15 FR FR8008381A patent/FR2454646A1/fr active Granted
- 1980-04-16 AU AU57518/80A patent/AU536674B2/en not_active Ceased
- 1980-04-16 JP JP4924380A patent/JPS5619067A/ja active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3341326A (en) * | 1962-10-01 | 1967-09-12 | Xerox Corp | Dark decay controlled xerography |
US3335003A (en) * | 1963-10-09 | 1967-08-08 | Xerox Corp | Reflex xerographic process |
US3627526A (en) * | 1969-12-29 | 1971-12-14 | Rca Corp | Electrophotographic recording elements with half-tone screen coatings thereon |
US3681071A (en) * | 1970-01-02 | 1972-08-01 | Rca Corp | Method of pressure treating electrophotographic recording elements to change their sensitivity to light |
US4076857A (en) * | 1976-06-28 | 1978-02-28 | Eastman Kodak Company | Process for developing electrographic images by causing electrical breakdown in the developer |
Also Published As
Publication number | Publication date |
---|---|
AU5751880A (en) | 1980-10-23 |
AU536674B2 (en) | 1984-05-17 |
EP0018742B2 (de) | 1988-08-24 |
FR2454646B1 (de) | 1983-12-09 |
DE3014449A1 (de) | 1980-10-30 |
DE3064518D1 (en) | 1983-09-15 |
EP0018742A1 (de) | 1980-11-12 |
BR8002337A (pt) | 1980-12-02 |
EP0018742B1 (de) | 1983-08-10 |
DE3014449C2 (de) | 1986-03-27 |
ATE4435T1 (de) | 1983-08-15 |
JPS5619067A (en) | 1981-02-23 |
JPH0210954B2 (de) | 1990-03-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |