IT1073863B - Perfezionamento nei dispositivi per la lettura di microschede - Google Patents

Perfezionamento nei dispositivi per la lettura di microschede

Info

Publication number: IT1073863B
Authority: IT; Italy
Prior art keywords: micro; improvement; card reading; reading devices; devices
Prior art date: 1975-10-14

Application number

IT51582/76A

Other languages

English (en)

Original Assignee

Bell & Howell Co

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.)

1975-10-14

Filing date

1976-10-05

Publication date

1985-04-17

1976-10-05 Application filed by Bell & Howell Co filed Critical Bell & Howell Co

1985-04-17 Application granted granted Critical

1985-04-17 Publication of IT1073863B publication Critical patent/IT1073863B/it

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
- G03B21/115—Projectors with built-in or built-on screen for microfilm reading of microfiches

Landscapes

Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Variable Magnification In Projection-Type Copying Machines (AREA)
Projection-Type Copiers In General (AREA)
Projection Apparatus (AREA)

IT51582/76A 1975-10-14 1976-10-05 Perfezionamento nei dispositivi per la lettura di microschede IT1073863B (it)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US05/621,905 US4111537A (en)	1975-10-14	1975-10-14	Optical structure for microfiche reader

Publications (1)

Publication Number	Publication Date
IT1073863B true IT1073863B (it)	1985-04-17

Family

ID=24492145

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT51582/76A IT1073863B (it)	1975-10-14	1976-10-05	Perfezionamento nei dispositivi per la lettura di microschede

Country Status (7)

Country	Link
US (1)	US4111537A (it)
CA (1)	CA1095298A (it)
CH (1)	CH611047A5 (it)
DE (1)	DE2644791A1 (it)
GB (1)	GB1508938A (it)
IT (1)	IT1073863B (it)
ZA (1)	ZA765770B (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2827209C2 (de) *	1978-06-21	1982-04-15	Schumacher, Theo, 5350 Euskirchen	Verstellbare Haltevorrichtung für Objektive eines Mikrofilm-Lese- und Rückvergrößerungsgerätes
US4331397A (en) *	1980-09-11	1982-05-25	Dukane Corporation	Front/rear projection system
US4636050A (en) *	1983-12-26	1987-01-13	Kabushiki Kaisha Gakushu Kenkyusha	Reflection type overhead projector
DE3439254A1 (de) *	1984-10-26	1986-04-30	MAP Mikrofilm Apparatebau Dr. Poehler GmbH & Co KG, 6352 Ober-Mörlen	Objektivhalterung
DE102005035410A1 (de) *	2005-07-28	2007-02-01	Robert Bosch Gmbh	Vorrichtung zum optischen Erfassen von Stückgütern

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3413061A (en) *	1966-02-02	1968-11-26	Lewis E. Simpson	Microfilm reader
BE755081A (fr) *	1969-08-21	1971-02-01	Ncr Co	Appareil lecteur pour micro-films
US3601482A (en) *	1969-10-23	1971-08-24	Eastman Kodak Co	Automatic focusing mechanism for a lap dissolve projector
US3791727A (en) *	1971-07-21	1974-02-12	Ncr	Microform reader projection lens tracking mechanism
US3888576A (en) *	1972-08-07	1975-06-10	Francis Bolgar	Film projectors
US3809460A (en) *	1972-11-22	1974-05-07	Eastman Kodak Co	Optical control mechanism
US3834800A (en) *	1973-04-30	1974-09-10	Dietzen Corp	Projector viewer with indicating device

1975
- 1975-10-14 US US05/621,905 patent/US4111537A/en not_active Expired - Lifetime
1976
- 1976-09-24 CA CA261,992A patent/CA1095298A/en not_active Expired
- 1976-09-27 ZA ZA765770A patent/ZA765770B/xx unknown
- 1976-10-04 DE DE19762644791 patent/DE2644791A1/de not_active Withdrawn
- 1976-10-05 GB GB41258/76A patent/GB1508938A/en not_active Expired
- 1976-10-05 IT IT51582/76A patent/IT1073863B/it active
- 1976-10-07 CH CH1267976A patent/CH611047A5/xx not_active IP Right Cessation

Also Published As

Publication number	Publication date
CH611047A5 (it)	1979-05-15
GB1508938A (en)	1978-04-26
US4111537A (en)	1978-09-05
CA1095298A (en)	1981-02-10
ZA765770B (en)	1977-08-31
DE2644791A1 (de)	1977-04-21

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