BR7801283A - Circuito de controle da densidade para controlar a operacao de um copiador de matriz de pontos - Google Patents
Circuito de controle da densidade para controlar a operacao de um copiador de matriz de pontosInfo
- Publication number
- BR7801283A BR7801283A BR7801283A BR7801283A BR7801283A BR 7801283 A BR7801283 A BR 7801283A BR 7801283 A BR7801283 A BR 7801283A BR 7801283 A BR7801283 A BR 7801283A BR 7801283 A BR7801283 A BR 7801283A
- Authority
- BR
- Brazil
- Prior art keywords
- copier
- control
- point matrix
- control circuit
- density
- Prior art date
Links
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)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
- Ink Jet (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
- Facsimile Scanning Arrangements (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/774,154 US4106061A (en) | 1977-03-03 | 1977-03-03 | Density control for ink jet copier |
Publications (1)
Publication Number | Publication Date |
---|---|
BR7801283A true BR7801283A (pt) | 1978-09-26 |
Family
ID=25100405
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR7801283A BR7801283A (pt) | 1977-03-03 | 1978-03-02 | Circuito de controle da densidade para controlar a operacao de um copiador de matriz de pontos |
Country Status (13)
Country | Link |
---|---|
US (1) | US4106061A (pt) |
JP (1) | JPS5855714B2 (pt) |
BE (1) | BE864553A (pt) |
BR (1) | BR7801283A (pt) |
CA (1) | CA1090863A (pt) |
CH (1) | CH630008A5 (pt) |
DE (1) | DE2809338C3 (pt) |
FR (1) | FR2382335A1 (pt) |
GB (1) | GB1556642A (pt) |
IL (1) | IL53864A (pt) |
IT (1) | IT1107053B (pt) |
NL (1) | NL7800930A (pt) |
SE (1) | SE428166B (pt) |
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 |
FI790105A (fi) * | 1979-01-12 | 1980-07-13 | Valmet Oy | Foerfarande och anordning foer behandling av fiberbana |
US4285507A (en) * | 1979-01-31 | 1981-08-25 | The Mead Corporation | Ink jet printer |
US4225872A (en) * | 1979-01-31 | 1980-09-30 | 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 |
EP0641115B1 (en) * | 1993-08-30 | 1999-03-24 | Hewlett-Packard Company | Image scanning head for a thermal ink-jet printer |
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 | ||
LU39915A1 (pt) * | 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 (pt) * | 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 SE SE7802365A patent/SE428166B/sv not_active IP Right Cessation
- 1978-03-02 GB GB8406/78A patent/GB1556642A/en not_active Expired
- 1978-03-02 FR FR7805963A patent/FR2382335A1/fr active Granted
- 1978-03-02 BR BR7801283A patent/BR7801283A/pt unknown
- 1978-03-03 BE BE185664A patent/BE864553A/xx not_active IP Right Cessation
- 1978-03-03 DE DE2809338A patent/DE2809338C3/de not_active Expired
- 1978-03-03 CH CH235678A patent/CH630008A5/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US4106061A (en) | 1978-08-08 |
BE864553A (fr) | 1978-09-04 |
IT7867250A0 (it) | 1978-02-08 |
JPS5855714B2 (ja) | 1983-12-10 |
SE428166B (sv) | 1983-06-06 |
GB1556642A (en) | 1979-11-28 |
JPS53109430A (en) | 1978-09-25 |
IT1107053B (it) | 1985-11-18 |
FR2382335B1 (pt) | 1984-01-27 |
IL53864A0 (en) | 1978-04-30 |
NL7800930A (nl) | 1978-09-05 |
FR2382335A1 (fr) | 1978-09-29 |
IL53864A (en) | 1980-11-30 |
SE7802365L (sv) | 1978-09-04 |
DE2809338B2 (de) | 1981-05-07 |
CA1090863A (en) | 1980-12-02 |
DE2809338C3 (de) | 1982-01-28 |
DE2809338A1 (de) | 1978-09-07 |
CH630008A5 (de) | 1982-05-28 |
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