CA1136993A - Dot percentage measuring device - Google Patents
Dot percentage measuring deviceInfo
- Publication number
- CA1136993A CA1136993A CA000333875A CA333875A CA1136993A CA 1136993 A CA1136993 A CA 1136993A CA 000333875 A CA000333875 A CA 000333875A CA 333875 A CA333875 A CA 333875A CA 1136993 A CA1136993 A CA 1136993A
- Authority
- CA
- Canada
- Prior art keywords
- light
- case
- recess
- dot
- 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
Links
- 238000012937 correction Methods 0.000 claims abstract description 53
- 230000006870 function Effects 0.000 claims description 10
- 230000000875 corresponding effect Effects 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000035939 shock Effects 0.000 claims description 2
- 239000013013 elastic material Substances 0.000 claims 2
- 239000006096 absorbing agent Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 25
- 230000008569 process Effects 0.000 abstract description 7
- 238000012360 testing method Methods 0.000 description 43
- 230000009467 reduction Effects 0.000 description 31
- 238000006722 reduction reaction Methods 0.000 description 31
- 238000005259 measurement Methods 0.000 description 30
- 238000010586 diagram Methods 0.000 description 18
- 230000003287 optical effect Effects 0.000 description 15
- 230000007246 mechanism Effects 0.000 description 10
- 239000000306 component Substances 0.000 description 8
- 238000011946 reduction process Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 230000000994 depressogenic effect Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 238000011179 visual inspection Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000013522 chelant Substances 0.000 description 2
- 239000011630 iodine Substances 0.000 description 2
- 229910052740 iodine Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 208000003251 Pruritus Diseases 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000001739 density measurement Methods 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012887 quadratic function Methods 0.000 description 1
- VMXUWOKSQNHOCA-UKTHLTGXSA-N ranitidine Chemical compound [O-][N+](=O)\C=C(/NC)NCCSCC1=CC=C(CN(C)C)O1 VMXUWOKSQNHOCA-UKTHLTGXSA-N 0.000 description 1
- 230000016776 visual perception Effects 0.000 description 1
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)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (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)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000412102A CA1149633A (en) | 1978-08-17 | 1982-09-23 | Dot percentage measuring device |
| CA000412103A CA1149634A (en) | 1978-08-17 | 1982-09-23 | Dot percentage measuring device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10018878A JPS5527909A (en) | 1978-08-17 | 1978-08-17 | Measuring instrument for area ratio of mesh point |
| JP100,188/1978 | 1978-08-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1136993A true CA1136993A (en) | 1982-12-07 |
Family
ID=14267319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000333875A Expired CA1136993A (en) | 1978-08-17 | 1979-08-16 | Dot percentage measuring device |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS5527909A (ja) |
| CA (1) | CA1136993A (ja) |
| CH (2) | CH636201A5 (ja) |
| ES (1) | ES483453A0 (ja) |
| FR (1) | FR2433737B1 (ja) |
| GB (2) | GB2029008B (ja) |
| IT (1) | IT1119825B (ja) |
| NL (3) | NL7906150A (ja) |
| SE (1) | SE443875B (ja) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58223707A (ja) * | 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 | 印刷機用の原図または版の網点面積率を求める方法および装置ならびに版に較正視野を設ける装置 |
Family Cites Families (3)
| 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 |
-
1978
- 1978-08-17 JP JP10018878A patent/JPS5527909A/ja active Pending
-
1979
- 1979-08-13 NL NL7906150A patent/NL7906150A/nl not_active Application Discontinuation
- 1979-08-13 IT IT50033/79A patent/IT1119825B/it active
- 1979-08-15 CH CH747579A patent/CH636201A5/fr not_active IP Right Cessation
- 1979-08-15 GB GB7928366A patent/GB2029008B/en not_active Expired
- 1979-08-16 CA CA000333875A patent/CA1136993A/en not_active Expired
- 1979-08-16 SE SE7906842A patent/SE443875B/sv not_active IP Right Cessation
- 1979-08-17 FR FR7920909A patent/FR2433737B1/fr not_active Expired
- 1979-08-17 ES ES483453A patent/ES483453A0/es active Granted
-
1982
- 1982-11-03 GB GB08231393A patent/GB2110366B/en not_active Expired
- 1982-11-09 CH CH649882A patent/CH638313A5/fr not_active IP Right Cessation
-
1991
- 1991-06-18 NL NL9101047A patent/NL9101047A/nl not_active Application Discontinuation
- 1991-06-18 NL NL9101048A patent/NL9101048A/nl not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| GB2029008A (en) | 1980-03-12 |
| NL9101048A (nl) | 1991-11-01 |
| ES8101777A1 (es) | 1980-12-16 |
| SE7906842L (sv) | 1980-02-18 |
| ES483453A0 (es) | 1980-12-16 |
| JPS5527909A (en) | 1980-02-28 |
| SE443875B (sv) | 1986-03-10 |
| CH636201A5 (fr) | 1983-05-13 |
| CH638313A5 (fr) | 1983-09-15 |
| FR2433737B1 (fr) | 1988-03-25 |
| IT1119825B (it) | 1986-03-10 |
| GB2029008B (en) | 1983-04-27 |
| NL9101047A (nl) | 1991-11-01 |
| NL7906150A (nl) | 1980-02-19 |
| GB2110366A (en) | 1983-06-15 |
| IT7950033A0 (it) | 1979-08-13 |
| FR2433737A1 (fr) | 1980-03-14 |
| GB2110366B (en) | 1983-10-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |