GB2110366B - Dot percentage measuring device - Google Patents

Dot percentage measuring device

Info

Publication number
GB2110366B
GB2110366B GB08231393A GB8231393A GB2110366B GB 2110366 B GB2110366 B GB 2110366B GB 08231393 A GB08231393 A GB 08231393A GB 8231393 A GB8231393 A GB 8231393A GB 2110366 B GB2110366 B GB 2110366B
Authority
GB
United Kingdom
Prior art keywords
measuring device
dot percentage
percentage measuring
dot
percentage
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
Application number
GB08231393A
Other versions
GB2110366A (en
Inventor
Yuji Mitsuhashi
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.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing 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 Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Publication of GB2110366A publication Critical patent/GB2110366A/en
Application granted granted Critical
Publication of GB2110366B publication Critical patent/GB2110366B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F5/00—Screening processes; Screens therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/86—Investigating moving sheets

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
GB08231393A 1978-08-17 1982-11-03 Dot percentage measuring device Expired GB2110366B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10018878A JPS5527909A (en) 1978-08-17 1978-08-17 Measuring instrument for area ratio of mesh point

Publications (2)

Publication Number Publication Date
GB2110366A GB2110366A (en) 1983-06-15
GB2110366B true GB2110366B (en) 1983-10-26

Family

ID=14267319

Family Applications (2)

Application Number Title Priority Date Filing Date
GB7928366A Expired GB2029008B (en) 1978-08-17 1979-08-15 Dot percentage measuring device
GB08231393A Expired GB2110366B (en) 1978-08-17 1982-11-03 Dot percentage measuring device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB7928366A Expired GB2029008B (en) 1978-08-17 1979-08-15 Dot percentage measuring device

Country Status (9)

Country Link
JP (1) JPS5527909A (en)
CA (1) CA1136993A (en)
CH (2) CH636201A5 (en)
ES (1) ES483453A0 (en)
FR (1) FR2433737B1 (en)
GB (2) GB2029008B (en)
IT (1) IT1119825B (en)
NL (3) NL7906150A (en)
SE (1) SE443875B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58223707A (en) * 1982-05-29 1983-12-26 ハイデルベルガ−・ドルツクマシ−ネン・アクチエンゲゼルシヤフト Method of obtaining net-point area ratio of original plate or plate for printer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3053181A (en) * 1958-10-30 1962-09-11 Lithographic Technical Foundat Method for controlling print quality for lithographic presses
US3375751A (en) * 1964-03-16 1968-04-02 Barnes Eng Co Negative and print densitometer
FR2224749A1 (en) * 1973-04-06 1974-10-31 Exaphot Sarl Measurement of screened image dot density - direct and indirect illumination, dot viewed from other side

Also Published As

Publication number Publication date
IT1119825B (en) 1986-03-10
ES8101777A1 (en) 1980-12-16
GB2029008B (en) 1983-04-27
GB2110366A (en) 1983-06-15
SE443875B (en) 1986-03-10
FR2433737A1 (en) 1980-03-14
CA1136993A (en) 1982-12-07
NL9101048A (en) 1991-11-01
JPS5527909A (en) 1980-02-28
SE7906842L (en) 1980-02-18
CH638313A5 (en) 1983-09-15
ES483453A0 (en) 1980-12-16
GB2029008A (en) 1980-03-12
NL9101047A (en) 1991-11-01
NL7906150A (en) 1980-02-19
FR2433737B1 (en) 1988-03-25
IT7950033A0 (en) 1979-08-13
CH636201A5 (en) 1983-05-13

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 19990814