JPS5762667A - Tonal range recording system - Google Patents

Tonal range recording system

Info

Publication number
JPS5762667A
JPS5762667A JP55138535A JP13853580A JPS5762667A JP S5762667 A JPS5762667 A JP S5762667A JP 55138535 A JP55138535 A JP 55138535A JP 13853580 A JP13853580 A JP 13853580A JP S5762667 A JPS5762667 A JP S5762667A
Authority
JP
Japan
Prior art keywords
time
applying
density
level
split
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.)
Pending
Application number
JP55138535A
Other languages
Japanese (ja)
Inventor
Tomoyuki Shimada
Seiichiro Yoshida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP55138535A priority Critical patent/JPS5762667A/en
Publication of JPS5762667A publication Critical patent/JPS5762667A/en
Pending legal-status Critical Current

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
    • H04N1/40087—Multi-toning, i.e. converting a continuous-tone signal for reproduction with more than two discrete brightnesses or optical densities, e.g. dots of grey and black inks on white paper

Landscapes

  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Fax Reproducing Arrangements (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

PURPOSE:To achieve a tonal range recording system having a linear coloring density visually, by controlling an applying level as well as applying time. CONSTITUTION:Taking a 4-tone graduation recording as an example, the applying time is controlled as 0, t1, t2, t3 and the applying level is split into three split time elements t01, t02, t03 corresponding to V2 for the t01 and V1 for the t02, t03. Thus, the coloring density at time t1 is expressed as dB which is cross point between a curve 2 and the time t1 since the applied level is V2 for a recording amount B. For recording amount C, the synthesized coloring density dc is obtained at time t2, since the applied level V1 is at the 2nd time split t02. Simultaneously, for amount D, the density dD is obtained. Thus, by suitably determining V1, V2 and t1, t2, t3 the coloring density difference D1, D2, D3 are all equal and a linear density characteristics can be obtained for four amounts A, B, C, D.
JP55138535A 1980-10-03 1980-10-03 Tonal range recording system Pending JPS5762667A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55138535A JPS5762667A (en) 1980-10-03 1980-10-03 Tonal range recording system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55138535A JPS5762667A (en) 1980-10-03 1980-10-03 Tonal range recording system

Publications (1)

Publication Number Publication Date
JPS5762667A true JPS5762667A (en) 1982-04-15

Family

ID=15224418

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55138535A Pending JPS5762667A (en) 1980-10-03 1980-10-03 Tonal range recording system

Country Status (1)

Country Link
JP (1) JPS5762667A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60120664A (en) * 1983-12-03 1985-06-28 Matsushita Electric Ind Co Ltd Picture copying machine
JPS60242766A (en) * 1984-05-17 1985-12-02 Matsushita Graphic Commun Syst Inc Heat sensing recorder
JPS61124921A (en) * 1984-11-22 1986-06-12 Minolta Camera Co Ltd Laser scanning type image forming device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5239310A (en) * 1975-09-23 1977-03-26 Omron Tateisi Electronics Co Video recorder
JPS53139422A (en) * 1977-05-12 1978-12-05 Matsushita Graphic Commun Syst Inc Multi-gradation recording device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5239310A (en) * 1975-09-23 1977-03-26 Omron Tateisi Electronics Co Video recorder
JPS53139422A (en) * 1977-05-12 1978-12-05 Matsushita Graphic Commun Syst Inc Multi-gradation recording device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60120664A (en) * 1983-12-03 1985-06-28 Matsushita Electric Ind Co Ltd Picture copying machine
JPS60242766A (en) * 1984-05-17 1985-12-02 Matsushita Graphic Commun Syst Inc Heat sensing recorder
JPS61124921A (en) * 1984-11-22 1986-06-12 Minolta Camera Co Ltd Laser scanning type image forming device

Similar Documents

Publication Publication Date Title
AT380272B (en) METHOD FOR PRODUCING MICROORGANISMS
ATA116179A (en) METHOD FOR PRODUCING POLYISOCYANATES WITH ISOCYANURATE GROUPS
AT380694B (en) METHOD FOR PRODUCING MICROORGANISMS
AU4102178A (en) Reclosable circulation valve for oilwell testing
AU3033177A (en) Method for curing coatings
AU4988279A (en) Control circuits for solenoids
AT377973B (en) METHOD FOR PRODUCING GEM-BIS (HYDROXYMETHYL) ALCOHOLS
DE3586516D1 (en) METHOD FOR PRODUCING MALEIMIDES.
FI853478A7 (en) Method for preparing phenylalkyl compounds.
IT8125233A0 (en) CONTROL EQUIPMENT FOR AN ANAEROBIC METHANOGENE FILTER.
DE3585109D1 (en) METHOD FOR PRODUCING (+/-) - 3A, 6,6,9A-TETRAMETHYLPERHYDRONAPHTHO (2,1-B) FURAN.
ATA672277A (en) CORE FOR THE PRODUCTION OF THIN CHANNELS IN CASTING PARTS
ES8201565A1 (en) 2-(3,4,5-Trimethoxyphenyl)-4,5-disubstituted thiazoles
JPS5762667A (en) Tonal range recording system
AT363958B (en) METHOD FOR SELECTIVELY PRODUCING ISOSORBIDE-5-NITRATE
AT367375B (en) METHOD FOR PRODUCING CYAN HYDROGEN
IT7825047A0 (en) DIGITAL CONTROL FOR SERVO VALVE.
AT369264B (en) METHOD FOR PRODUCING IVY EXTRACTS OR BY ALPHA-HEDERIN
AT367448B (en) METHOD FOR THE MICROBIOLOGICAL CHANGING OF PRESENT WOOD BY THE ACTION OF MICROORGANISMS
AR227202A1 (en) PROCEDURE FOR PRODUCING ETHANOL BY FERMENTATION
DE3066286D1 (en) Method for increasing the stability of an artificial island by means of pre-loading
NL7902488A (en) SERVO CONTROL VALVE.
FI811026L (en) ANORDING FOR DYNAMIC MAINTENANCE AV LUTNING
JPS5595104A (en) Movement control system
FI812100A7 (en) Phthalimidoguanidines used as plant growth regulators.