JPS57109937A - Retrieving method of roll type microfilm - Google Patents

Retrieving method of roll type microfilm

Info

Publication number
JPS57109937A
JPS57109937A JP55184999A JP18499980A JPS57109937A JP S57109937 A JPS57109937 A JP S57109937A JP 55184999 A JP55184999 A JP 55184999A JP 18499980 A JP18499980 A JP 18499980A JP S57109937 A JPS57109937 A JP S57109937A
Authority
JP
Japan
Prior art keywords
head
roll
marks
film
correcting state
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
JP55184999A
Other languages
Japanese (ja)
Inventor
Yoji Nakanishi
Hisato Ochi
Takaaki Habara
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.)
Hitachi Electronics Services Co Ltd
Original Assignee
Hitachi Electronics Services 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 Hitachi Electronics Services Co Ltd filed Critical Hitachi Electronics Services Co Ltd
Priority to JP55184999A priority Critical patent/JPS57109937A/en
Publication of JPS57109937A publication Critical patent/JPS57109937A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/10—Projectors with built-in or built-on screen
    • G03B21/11—Projectors with built-in or built-on screen for microfilm reading
    • G03B21/111—Projectors with built-in or built-on screen for microfilm reading of roll films
    • G03B21/113—Handling roll films

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To increase the accurateness of the data for the automatic retrieval with a simple method, by adding a head display part into which the roll number, etc. of a film are written with use of small and large image marks to the head of the film roll. CONSTITUTION:The small and large image marks are used for the binary codes by noticing that a retrieving machine used for the image count system has a function to discriminate the size of the marks. The head display part into which the roll number and the display of correcting state are written with the hexadecimal notation number for example is added to the head of the film roll and read by the retrieving machine to check the erroneous retrieval. In such a way, the film roll number and the correcting state within a magazine set to the retrieving machine can be known to realize the automatic checking for both the roll number and the correcting state which are controlled by a computer. Thus the accurateness of the data can be increased in a simple way.
JP55184999A 1980-12-27 1980-12-27 Retrieving method of roll type microfilm Pending JPS57109937A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55184999A JPS57109937A (en) 1980-12-27 1980-12-27 Retrieving method of roll type microfilm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55184999A JPS57109937A (en) 1980-12-27 1980-12-27 Retrieving method of roll type microfilm

Publications (1)

Publication Number Publication Date
JPS57109937A true JPS57109937A (en) 1982-07-08

Family

ID=16163002

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55184999A Pending JPS57109937A (en) 1980-12-27 1980-12-27 Retrieving method of roll type microfilm

Country Status (1)

Country Link
JP (1) JPS57109937A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61116345U (en) * 1984-12-30 1986-07-23
JPH01214465A (en) * 1988-09-16 1989-08-28 Matsushita Electric Ind Co Ltd Color ink ribbon

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61116345U (en) * 1984-12-30 1986-07-23
JPH01214465A (en) * 1988-09-16 1989-08-28 Matsushita Electric Ind Co Ltd Color ink ribbon

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