DE727353C - Device for obtaining white picture borders in automatic photography - Google Patents

Device for obtaining white picture borders in automatic photography

Info

Publication number
DE727353C
DE727353C DEP82081D DEP0082081D DE727353C DE 727353 C DE727353 C DE 727353C DE P82081 D DEP82081 D DE P82081D DE P0082081 D DEP0082081 D DE P0082081D DE 727353 C DE727353 C DE 727353C
Authority
DE
Germany
Prior art keywords
white picture
obtaining white
automatic photography
mask
picture borders
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
Application number
DEP82081D
Other languages
German (de)
Inventor
Markus Schorr
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.)
DER PHOTO SCHORR MARKUS SCHORR
Original Assignee
DER PHOTO SCHORR MARKUS SCHORR
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 DER PHOTO SCHORR MARKUS SCHORR filed Critical DER PHOTO SCHORR MARKUS SCHORR
Priority to DEP82081D priority Critical patent/DE727353C/en
Application granted granted Critical
Publication of DE727353C publication Critical patent/DE727353C/en
Expired 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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/48—Details of cameras or camera bodies; Accessories therefor adapted for combination with other photographic or optical apparatus
    • G03B17/50—Details of cameras or camera bodies; Accessories therefor adapted for combination with other photographic or optical apparatus with both developing and finishing apparatus
    • G03B17/53—Details of cameras or camera bodies; Accessories therefor adapted for combination with other photographic or optical apparatus with both developing and finishing apparatus for automatically delivering a finished picture after a signal causing exposure has been given, e.g. by pushing a button, by inserting a coin

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection-Type Copiers In General (AREA)

Description

Vorrichtung zur Erzielung weißer Bildränder beim automatischen Photographieren Die Erfindung betrifft eine Vorrichtung zur Erzielung von weißen Bildrändern beim automatischen- Photographieren auf bandförmigem Umkehrpapier.Device for achieving white image edges in automatic photography The invention relates to a device for achieving white image edges in automatic photographing on tape-shaped reversal paper.

Es ist bekannt, zu diesem Zweck vor der Aufnahmekammer des Photographierautomaten eine Kammer -anzuordnen, in der die Bildränder mit einer die Bildmitte abdeckenden Mwke vorbelichtet werden, so daß. sie nach der Umkehrung weiß sind. Diese Maske bestand aus einer Glasplatte mit undurchsichtigem Mittelfeld. Gleichgültig, wie dieses undurchsichtige Feld hergestellt wurde, ergab sich hierbei der Nachteil einer unscharfen Randbegrenzung, der durch die übergangskanten zwischen dem durchsichtigen und dem undurchsichtigen Teil verursacht wurde.It is known for this purpose in front of the receiving chamber of the photographing machine to arrange a chamber in which the edges of the picture with a covering the center of the picture Mwke are pre-exposed so that. they are white after the inversion. This mask consisted of a glass plate with an opaque central field. Doesn't matter how this opaque field was produced, this resulted in the disadvantage of a fuzzy border, caused by the transition edges between the transparent and the opaque part.

Dieser Mangel ist erfindungsgemäß dadurch behoben, daß eine Maske verwendet ist, die ganz aus undurchsichtigem Stoff besteht und winklige Ausschnitte hat, deren längs des Papierbandes gerichtete Streifen in der gewünschten Randbreite, deren quer gerichtete Streifen in der doppelten Randbreite gehalten sind, derart, daß die halbe Querbreite auf den jeweils benachbarten Papierabschnitt entfällt. Hierdurch wird gleichzeitig der Vorteil erzielt, daß die Maske besonders dauerhaft und billig in der Herstellun4 ist, sofern ein geeigneter Werkstoff, wie z. B. Metall, verwendet wird.According to the invention, this deficiency is remedied in that a mask is used, which is made entirely of opaque fabric and angled cutouts has the stripes of which are directed along the paper tape and have the desired edge width, whose transversely directed stripes are kept twice the width of the edge, in such a way that that half the transverse width is allocated to the respective adjacent paper section. This also has the advantage that the mask is particularly durable and is cheap to manufacture, provided a suitable material, such as e.g. B. metal, is used.

Die Maske hat also etwa die in der Zeichnung dargestellte Form. Die Belichtungsfolge ist so, daß der obere Bildrand erst dann durchgehend belichtet ist, wenn er nach Weiterrücken noch einmal zusangmen mit dem unteren Rand des nächsten Bildabschnitte belichtet wurde. Demzufolge weisen die Füße der L-förmigen Schlitze die doppelte Randbreite auf. Die eigentliche Bildbelichtung erfolgt dann als dritte Belichtungsphase.The mask has roughly the shape shown in the drawing. the The exposure sequence is such that the upper edge of the image is only then continuously exposed is when, after moving forward, he once more together with the lower edge of the next Image sections was exposed. Accordingly, the feet of the L-shaped slots twice the margin width. The actual image exposure then takes place as the third Exposure phase.

Claims (1)

PATENTANSPRUCH Vorrichtung zur Erzielung weißer Bildränder beim automatischen Photographieren auf bandförmigem Umkehrpapier mit einer vor der Aufnahmekamera angeordneten Belichtungskammer und einer die Bildmitte abdeckenden Maske, dadurch gekennzeichnet, daß, die ganz aus undurchsichtigem Stoff bestehende Maske winkelige Ausschnitte aufweist, deren längs des Papierbandes gerichtete Streifen in der gewünschten Randbreite, deren quer gerichtete Streifen in der doppelten Randbreite gehalten sind.PATENT CLAIM Device for achieving white image edges with automatic Photographing on tape-shaped reversal paper with an arranged in front of the recording camera Exposure chamber and a mask covering the center of the image, characterized in that that the mask, made entirely of opaque material, has angular cutouts has, the stripes of which are directed along the paper tape and have the desired edge width, whose transversely directed strips are kept in double the edge width.
DEP82081D 1941-02-27 1941-02-27 Device for obtaining white picture borders in automatic photography Expired DE727353C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP82081D DE727353C (en) 1941-02-27 1941-02-27 Device for obtaining white picture borders in automatic photography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP82081D DE727353C (en) 1941-02-27 1941-02-27 Device for obtaining white picture borders in automatic photography

Publications (1)

Publication Number Publication Date
DE727353C true DE727353C (en) 1942-11-18

Family

ID=7393973

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP82081D Expired DE727353C (en) 1941-02-27 1941-02-27 Device for obtaining white picture borders in automatic photography

Country Status (1)

Country Link
DE (1) DE727353C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3254582A (en) * 1962-03-26 1966-06-07 Polaroid Corp Photographic apparatus for exposing photosensitive image-recording sheets

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3254582A (en) * 1962-03-26 1966-06-07 Polaroid Corp Photographic apparatus for exposing photosensitive image-recording sheets

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