JPS5773607A - Calibration system of lithographic-plate pattern area rate meter - Google Patents

Calibration system of lithographic-plate pattern area rate meter

Info

Publication number
JPS5773607A
JPS5773607A JP55149106A JP14910680A JPS5773607A JP S5773607 A JPS5773607 A JP S5773607A JP 55149106 A JP55149106 A JP 55149106A JP 14910680 A JP14910680 A JP 14910680A JP S5773607 A JPS5773607 A JP S5773607A
Authority
JP
Japan
Prior art keywords
printing
ram46
picture
mean value
reflected light
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
Application number
JP55149106A
Other languages
Japanese (ja)
Other versions
JPS6349161B2 (en
Inventor
Hideo Takeuchi
Satoru Horiguchi
Ryuzo Tamaoki
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.)
Toshiba Mechatronics Co Ltd
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing Co Ltd
Toshiba Seiki 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, Toshiba Seiki Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP55149106A priority Critical patent/JPS5773607A/en
Priority to US06/311,603 priority patent/US4441819A/en
Priority to DE3141758A priority patent/DE3141758C2/en
Publication of JPS5773607A publication Critical patent/JPS5773607A/en
Publication of JPS6349161B2 publication Critical patent/JPS6349161B2/ja
Granted legal-status Critical Current

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 maximum and minimum of the mean value of values obtained by scanning a printing plate for offset printing by a photoelectric detecting element as the quantities of reflected light at a no-picture-line part and a picture-line contact-print part. CONSTITUTION:A printing plate 20 for offset printing is scanned by a photoelectric detector 13 consisting of photosensors Sn. 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, an 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 a no-picture-line part once, the past, for example, four measured values are calculated to find the mean value, which is stored in the RAM46 to set the upper and lower limits of the quantity of reflected light, whereby printing out the result. Consequently, the influences of disturbing light and reflection are eliminated, and while measurement precision is improved, the process of printing is rationalized, preventing the production of detectives.
JP55149106A 1980-10-24 1980-10-24 Calibration system of lithographic-plate pattern area rate meter Granted JPS5773607A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP55149106A JPS5773607A (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
JP55149106A JPS5773607A (en) 1980-10-24 1980-10-24 Calibration system of lithographic-plate pattern area rate meter

Publications (2)

Publication Number Publication Date
JPS5773607A true JPS5773607A (en) 1982-05-08
JPS6349161B2 JPS6349161B2 (en) 1988-10-03

Family

ID=15467823

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55149106A Granted JPS5773607A (en) 1980-10-24 1980-10-24 Calibration system of lithographic-plate pattern area rate meter

Country Status (1)

Country Link
JP (1) JPS5773607A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022048641A (en) 2020-09-15 2022-03-28 昭和電工株式会社 Heat sink and cooling device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3958509A (en) * 1974-06-13 1976-05-25 Harris Corporation Image scan and ink control system
JPS55149107A (en) * 1979-05-05 1980-11-20 Peroxid Chemie Gmbh Preparation of alkali metal or alkaline earth metal peroxide

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3958509A (en) * 1974-06-13 1976-05-25 Harris Corporation Image scan and ink control system
JPS55149107A (en) * 1979-05-05 1980-11-20 Peroxid Chemie Gmbh Preparation of alkali metal or alkaline earth metal peroxide

Cited By (2)

* Cited by examiner, † Cited by third party
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
JPS6349161B2 (en) 1988-10-03

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