JPS5773608A - Calibration system of lithographic-plate pattern area rate meter - Google Patents
Calibration system of lithographic-plate pattern area rate meterInfo
- Publication number
- JPS5773608A JPS5773608A JP55149107A JP14910780A JPS5773608A JP S5773608 A JPS5773608 A JP S5773608A JP 55149107 A JP55149107 A JP 55149107A JP 14910780 A JP14910780 A JP 14910780A JP S5773608 A JPS5773608 A JP S5773608A
- Authority
- JP
- Japan
- Prior art keywords
- value
- printing plate
- picture
- printing
- ram46
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/0027—Devices for scanning originals, printing formes or the like for determining or presetting the ink supply
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
PURPOSE:To rationalize the process of printing, by calibrating the minimum value of the mean value of values, obtained by scanning a printing plate for offset printing by a photoelectric detecting element, and the detection value of the terminal part of the printing plate as the quantities of reflected light at a picture-line contact-print part and a no-picture-line part. CONSTITUTION:A printing plate 20 for offset printing is scanned more than once by a photoelectric detector 13, consisting of photosensor Sn, at prescribed intervals. A printer number, etc., is inputted on a keyboard 47 to specify plate size, the number of an ink adjustment key, an interval, etc., in an RAM46 and an ROM45. The output 41 of a photosensor 13 is stored in the RAM46 by one ink adjustment key at every time through a multiplexer 42, and A/D converter 43, an input-output control circuit 49, a bus, and a CPU, and each time the sensor S0 measures a calibration mark 23 and the terminal 201 of the printing plate once, the mean value of the past several measured values is calculated and stored in the RAM46 to use the minumum value of the mean value as the calibrated value of a picture-line contact-print part; and the front and rear terminal parts of the printing plate 20 are regarded as calibration areas, and scanned values by the sensors Sn in the areas are used as the calibrated value of a no-picture-line part.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55149107A JPS5773608A (en) | 1980-10-24 | 1980-10-24 | Calibration system of lithographic-plate pattern area rate meter |
US06/311,603 US4441819A (en) | 1980-10-24 | 1981-10-15 | Calibration method for printing plate picture pattern area meter |
DE3141758A DE3141758C2 (en) | 1980-10-24 | 1981-10-21 | Procedure for determining the area proportions of a print template |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55149107A JPS5773608A (en) | 1980-10-24 | 1980-10-24 | Calibration system of lithographic-plate pattern area rate meter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5773608A true JPS5773608A (en) | 1982-05-08 |
JPH043481B2 JPH043481B2 (en) | 1992-01-23 |
Family
ID=15467844
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55149107A Granted JPS5773608A (en) | 1980-10-24 | 1980-10-24 | Calibration system of lithographic-plate pattern area rate meter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5773608A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6269112A (en) * | 1985-09-24 | 1987-03-30 | Toshiba Seiki Kk | Measuring method for picture pattern area rate of panel |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3958509A (en) * | 1974-06-13 | 1976-05-25 | Harris Corporation | Image scan and ink control system |
JPS55149106A (en) * | 1979-05-02 | 1980-11-20 | Mitsubishi Electric Corp | Oxygen recycling type ozone generating system |
-
1980
- 1980-10-24 JP JP55149107A patent/JPS5773608A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3958509A (en) * | 1974-06-13 | 1976-05-25 | Harris Corporation | Image scan and ink control system |
JPS55149106A (en) * | 1979-05-02 | 1980-11-20 | Mitsubishi Electric Corp | Oxygen recycling type ozone generating system |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6269112A (en) * | 1985-09-24 | 1987-03-30 | Toshiba Seiki Kk | Measuring method for picture pattern area rate of panel |
JPH0575047B2 (en) * | 1985-09-24 | 1993-10-19 | Toshiba Seiki Kk |
Also Published As
Publication number | Publication date |
---|---|
JPH043481B2 (en) | 1992-01-23 |
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