CA1062762A - Color dot screen for electro photography - Google Patents
Color dot screen for electro photographyInfo
- Publication number
- CA1062762A CA1062762A CA226,339A CA226339A CA1062762A CA 1062762 A CA1062762 A CA 1062762A CA 226339 A CA226339 A CA 226339A CA 1062762 A CA1062762 A CA 1062762A
- Authority
- CA
- Canada
- Prior art keywords
- dots
- dot
- screen
- color
- pattern
- 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
- 238000000034 method Methods 0.000 claims abstract description 68
- 230000008569 process Effects 0.000 claims abstract description 49
- 239000003086 colorant Substances 0.000 claims abstract description 25
- 230000003287 optical effect Effects 0.000 claims abstract description 20
- 238000003384 imaging method Methods 0.000 claims abstract description 10
- 150000001875 compounds Chemical class 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 14
- 239000000654 additive Substances 0.000 claims description 9
- 230000000996 additive effect Effects 0.000 claims description 9
- 230000003252 repetitive effect Effects 0.000 claims description 7
- 238000003491 array Methods 0.000 claims description 6
- 230000000295 complement effect Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 230000006872 improvement Effects 0.000 claims description 2
- 238000002310 reflectometry Methods 0.000 abstract description 9
- 238000012216 screening Methods 0.000 abstract description 4
- 230000033458 reproduction Effects 0.000 description 20
- 238000011161 development Methods 0.000 description 16
- 230000018109 developmental process Effects 0.000 description 16
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- 108091008695 photoreceptors Proteins 0.000 description 12
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- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 3
- 239000000976 ink Substances 0.000 description 3
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- 229910052711 selenium Inorganic materials 0.000 description 3
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- 238000000926 separation method Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000005316 response function Methods 0.000 description 2
- 238000001429 visible spectrum Methods 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
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- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005686 electrostatic field Effects 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- 230000035945 sensitivity Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- -1 vinyl halide Chemical class 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
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
-
- 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
- G03G15/01—Apparatus for electrographic processes using a charge pattern for producing multicoloured copies
- G03G15/0105—Details of unit
- G03G15/011—Details of unit for exposing
- G03G15/0115—Details of unit for exposing and forming a half-tone image
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Color Electrophotography (AREA)
- Spectrometry And Color Measurement (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US46716174A | 1974-05-06 | 1974-05-06 | |
| US05/467,326 US4108654A (en) | 1974-05-06 | 1974-05-06 | Color electrophotographic process employing a document screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1062762A true CA1062762A (en) | 1979-09-18 |
Family
ID=27041944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA226,339A Expired CA1062762A (en) | 1974-05-06 | 1975-05-06 | Color dot screen for electro photography |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5133632A (en:Method) |
| CA (1) | CA1062762A (en:Method) |
| DE (1) | DE2520009A1 (en:Method) |
| FR (1) | FR2270624B1 (en:Method) |
| GB (1) | GB1490898A (en:Method) |
| NL (1) | NL7505039A (en:Method) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5231747A (en) * | 1975-09-05 | 1977-03-10 | Hitachi Ltd | Screen for color copying machine |
| JPH0731427B2 (ja) * | 1986-04-25 | 1995-04-10 | 株式会社リコー | 静電転写型記録装置 |
-
1975
- 1975-04-28 NL NL7505039A patent/NL7505039A/xx not_active Application Discontinuation
- 1975-04-30 JP JP50052455A patent/JPS5133632A/ja active Pending
- 1975-05-05 DE DE19752520009 patent/DE2520009A1/de not_active Ceased
- 1975-05-06 CA CA226,339A patent/CA1062762A/en not_active Expired
- 1975-05-06 GB GB1896075A patent/GB1490898A/en not_active Expired
- 1975-05-06 FR FR7514227A patent/FR2270624B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL7505039A (nl) | 1975-07-31 |
| FR2270624A1 (en:Method) | 1975-12-05 |
| FR2270624B1 (en:Method) | 1978-08-25 |
| DE2520009A1 (de) | 1975-11-20 |
| JPS5133632A (en) | 1976-03-22 |
| GB1490898A (en) | 1977-11-02 |
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