CA1090863A - Density control for ink jet printer - Google Patents
Density control for ink jet printerInfo
- Publication number
- CA1090863A CA1090863A CA294,955A CA294955A CA1090863A CA 1090863 A CA1090863 A CA 1090863A CA 294955 A CA294955 A CA 294955A CA 1090863 A CA1090863 A CA 1090863A
- Authority
- CA
- Canada
- Prior art keywords
- output
- master
- scanner
- signal
- providing
- 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
- 230000003287 optical effect Effects 0.000 claims abstract description 23
- 230000001419 dependent effect Effects 0.000 claims description 6
- 230000010355 oscillation Effects 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 11
- 238000007639 printing Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 230000000875 corresponding effect Effects 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 6
- 230000010354 integration Effects 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 235000009508 confectionery Nutrition 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000007641 inkjet printing Methods 0.000 description 2
- 230000000638 stimulation Effects 0.000 description 2
- 241000490229 Eucephalus Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/40—Picture signal circuits
- H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
- H04N1/4051—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a dispersed dots halftone pattern, the dots having substantially the same size
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Fax Reproducing Arrangements (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
- Ink Jet (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
- Facsimile Scanning Arrangements (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US774,154 | 1977-03-03 | ||
| US05/774,154 US4106061A (en) | 1977-03-03 | 1977-03-03 | Density control for ink jet copier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1090863A true CA1090863A (en) | 1980-12-02 |
Family
ID=25100405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA294,955A Expired CA1090863A (en) | 1977-03-03 | 1978-01-13 | Density control for ink jet printer |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US4106061A (enExample) |
| JP (1) | JPS5855714B2 (enExample) |
| BE (1) | BE864553A (enExample) |
| BR (1) | BR7801283A (enExample) |
| CA (1) | CA1090863A (enExample) |
| CH (1) | CH630008A5 (enExample) |
| DE (1) | DE2809338C3 (enExample) |
| FR (1) | FR2382335A1 (enExample) |
| GB (1) | GB1556642A (enExample) |
| IL (1) | IL53864A (enExample) |
| IT (1) | IT1107053B (enExample) |
| NL (1) | NL7800930A (enExample) |
| SE (1) | SE428166B (enExample) |
Families Citing this family (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4112469A (en) * | 1977-04-21 | 1978-09-05 | The Mead Corporation | Jet drop copying apparatus |
| US4155103A (en) * | 1977-11-28 | 1979-05-15 | The Mead Corporation | Dot matrix copying apparatus |
| JPS6023541B2 (ja) * | 1978-05-02 | 1985-06-07 | 株式会社リコー | デイジタル複写機 |
| DE2936667A1 (de) * | 1978-09-12 | 1980-03-20 | Canon Kk | Kopiergeraet |
| US4207579A (en) * | 1979-01-08 | 1980-06-10 | The Mead Corporation | Reciprocating paper handling apparatus for use in an ink jet copier |
| FI790105A7 (fi) * | 1979-01-12 | 1980-07-13 | Valmet Oy | Foerfarande och anordning foer behandling av fiberbana |
| US4225872A (en) * | 1979-01-31 | 1980-09-30 | The Mead Corporation | Ink jet printer |
| US4285507A (en) * | 1979-01-31 | 1981-08-25 | The Mead Corporation | Ink jet printer |
| JPS55130781A (en) * | 1979-03-30 | 1980-10-09 | Canon Inc | Liquid injecting recorder |
| US4237466A (en) * | 1979-05-07 | 1980-12-02 | The Mead Corporation | Paper transport system for an ink jet printer |
| US4278999A (en) * | 1979-09-12 | 1981-07-14 | The Mead Corporation | Moving image scanner |
| US4469026A (en) * | 1979-09-20 | 1984-09-04 | Ibm Corporation | Method and apparatus for controlling drying and detaching of printed material |
| US4321627A (en) * | 1979-09-20 | 1982-03-23 | International Business Machines Corporation | Optical scanner for ink jet printer |
| JPS5691228A (en) * | 1979-12-25 | 1981-07-24 | Fuji Photo Film Co Ltd | Laser recorder |
| JPS5738065A (en) * | 1980-08-20 | 1982-03-02 | Canon Inc | Video forming device |
| US4394685A (en) * | 1980-09-04 | 1983-07-19 | Centronics Data Computer Corporation | Interface for operating a dot matrix printer for printing a video image |
| GB2089165B (en) * | 1980-10-30 | 1985-10-09 | Canon Kk | Character and image processing |
| US4554593A (en) * | 1981-01-02 | 1985-11-19 | International Business Machines Corporation | Universal thresholder/discriminator |
| US4395031A (en) * | 1981-09-08 | 1983-07-26 | The Webb Company | Apparatus for printing books of signatures and method for same |
| US4642681A (en) * | 1982-10-08 | 1987-02-10 | Canon Kabushiki Kaisha | Color image processing apparatus for generating color output signals and a black output signal in a mutually exclusive manner |
| JPS6062779A (ja) * | 1983-08-31 | 1985-04-10 | Nec Corp | インクジェット記録方法 |
| DE3343907C2 (de) * | 1983-12-05 | 1986-02-27 | Lothar 5300 Bonn Becker | Optoelektronischer Handkopierer |
| JPS60208182A (ja) * | 1984-03-30 | 1985-10-19 | Canon Inc | ビデオ画像記録装置 |
| US4872063A (en) * | 1988-03-17 | 1989-10-03 | Optum Corporation | Method to increase scanning resolution using a synthetic aperture |
| US5028192A (en) * | 1988-07-15 | 1991-07-02 | Foote & Davies, Inc. | Binding and collating techniques |
| US5070410A (en) * | 1989-03-21 | 1991-12-03 | Hewlett-Packard Company | Apparatus and method using a combined read/write head for processing and storing read signals and for providing firing signals to thermally actuated ink ejection elements |
| DE69417319T2 (de) * | 1993-08-30 | 1999-07-15 | Hewlett-Packard Co., Palo Alto, Calif. | Bildabtastkopf für einen thermischen Tintenstrahldrucker |
| US5532825A (en) * | 1993-08-30 | 1996-07-02 | Hewlett-Packard Company | Add-on scanner for existing ink jet printer |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1973725A (en) * | 1934-09-18 | Picture transmission amplifier | ||
| NL263106A (enExample) * | 1960-04-01 | |||
| US3294896A (en) * | 1963-07-24 | 1966-12-27 | Bell Telephone Labor Inc | Digital encoder for facsimile transmission |
| FR1457309A (fr) * | 1965-05-13 | 1966-01-24 | Colos Soc | Procédé et dispositif électroniques de reproduction des demi-teintes sur électrostencil |
| US3580995A (en) * | 1968-04-29 | 1971-05-25 | Rca Corp | Constant sized halftone dot image generator |
| US3613103A (en) * | 1969-07-25 | 1971-10-12 | Alden Res Found | Analog signal modifying apparatus |
| JPS4883723A (enExample) * | 1972-02-08 | 1973-11-08 | ||
| US3928718A (en) * | 1973-05-09 | 1975-12-23 | Hitachi Ltd | Image reproducing system |
| US3977007A (en) * | 1975-06-02 | 1976-08-24 | Teletype Corporation | Gray tone generation |
-
1977
- 1977-03-03 US US05/774,154 patent/US4106061A/en not_active Expired - Lifetime
-
1978
- 1978-01-13 CA CA294,955A patent/CA1090863A/en not_active Expired
- 1978-01-22 IL IL53864A patent/IL53864A/xx unknown
- 1978-01-26 NL NL7800930A patent/NL7800930A/xx not_active Application Discontinuation
- 1978-02-08 IT IT67250/78A patent/IT1107053B/it active
- 1978-02-24 JP JP53020810A patent/JPS5855714B2/ja not_active Expired
- 1978-03-02 FR FR7805963A patent/FR2382335A1/fr active Granted
- 1978-03-02 SE SE7802365A patent/SE428166B/sv not_active IP Right Cessation
- 1978-03-02 BR BR7801283A patent/BR7801283A/pt unknown
- 1978-03-02 GB GB8406/78A patent/GB1556642A/en not_active Expired
- 1978-03-03 BE BE185664A patent/BE864553A/xx not_active IP Right Cessation
- 1978-03-03 CH CH235678A patent/CH630008A5/de not_active IP Right Cessation
- 1978-03-03 DE DE2809338A patent/DE2809338C3/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| IL53864A0 (en) | 1978-04-30 |
| CH630008A5 (de) | 1982-05-28 |
| IL53864A (en) | 1980-11-30 |
| IT7867250A0 (it) | 1978-02-08 |
| FR2382335A1 (fr) | 1978-09-29 |
| FR2382335B1 (enExample) | 1984-01-27 |
| NL7800930A (nl) | 1978-09-05 |
| JPS5855714B2 (ja) | 1983-12-10 |
| BE864553A (fr) | 1978-09-04 |
| GB1556642A (en) | 1979-11-28 |
| SE428166B (sv) | 1983-06-06 |
| IT1107053B (it) | 1985-11-18 |
| DE2809338A1 (de) | 1978-09-07 |
| JPS53109430A (en) | 1978-09-25 |
| DE2809338B2 (de) | 1981-05-07 |
| DE2809338C3 (de) | 1982-01-28 |
| SE7802365L (sv) | 1978-09-04 |
| US4106061A (en) | 1978-08-08 |
| BR7801283A (pt) | 1978-09-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1090863A (en) | Density control for ink jet printer | |
| US3922484A (en) | Method for the rastered reproduction of colored continuous tone images of single or multicolor originals | |
| US3928718A (en) | Image reproducing system | |
| US4413275A (en) | Ink-jet color printing apparatus | |
| DE3856525T2 (de) | Bilderzeugungsgerät | |
| CA1074387A (en) | Gray tone generation | |
| AU628594B2 (en) | An apparatus for generating an image from a digital video signal | |
| EP0210251B1 (en) | Method and apparatus for high resolution ink jet printing | |
| US4208666A (en) | Multiple copy ink jet printer | |
| JP3479560B2 (ja) | 限定濃度分解能をもつレンダリング装置のスクリーン処理方法 | |
| US4034400A (en) | Apparatus for reproducing graphic material | |
| US4065773A (en) | Method and apparatus for generating gray tones in an ink jet printer | |
| GB1565109A (en) | Methods for image reproduction | |
| US4590514A (en) | Color image processing apparatus | |
| US3436472A (en) | Screened photo reproduction | |
| US4151555A (en) | Optical scanning and encoding device | |
| US5790272A (en) | Multi-tone image processing method and apparatus | |
| CA1121732A (en) | Method and apparatus for engraving printing forms | |
| US4419676A (en) | Method of recording signals on bands by means of laser beams and apparatus for carrying out the method | |
| US4439789A (en) | Binary scan system | |
| CA2037693A1 (en) | Laser printer_with parameter switching in accordance with scanning density | |
| US5152225A (en) | Method of making a printing film and printing process using same | |
| GB1497468A (en) | Method and apparatus for generating screened halftone images by scanning | |
| USRE30911E (en) | Optical scanning and encoding device | |
| WO1991004864A1 (en) | Method to improve printing quality of grey scales and colour for printers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |