APPARATUS FOR IMAGE-TRANSFER PHOTOGRAPHY

• US 3,555,988 A
• Filed: 05/14/1968
• Issued: 01/19/1971
• Est. Priority Date: 05/19/1967
• Status: Expired due to Term

• Current Assignee: Karl Wagner
• Original Assignee: Karl Wagner
• Inventors: Wagner, Karl
• Application Number:
  US04/728,997
• Time in Patent Office: 980 Days
• US Class Current: 396/585
• CPC Class Codes: G03B 17/52 of the Land type

Abstract

A camera for image-transfer photography having a movably mounted first presser roller on the cover of the camera housing which is engaged by cams during movement of the cover to closed position for shifting the first pressure roller in a direction toward a second presser roller which is mounted in the body of the housing. The second presser roller or the cams are biased by springs to insure that at least one of the presser rollers will yield when the negative and positive webs are being withdrawn from the housing upon completion of an exposure and when the thickness of the laminated structure passing between the rollers increases.

Claims

1. In an apparatus for image-transfer photography, a combination comprising a housing having chamber means for positive and negative web materials and defining a path along which such materials can be advanced toward an outlet provided in the housing, said housing comprising a first portion and a second portion movable with reference to the first portion between open and closed positions in which it respectively affords access to and seals said chamber means;

and compressing means for biasing the positive and negative materials against each other during advance along a predetermined stretch of said path, said compressing means comprising a first presser member installed in said first portion at one side of said stretch, a second presser member carried by said second portion and being located at the other side of said stretch in closed position of said second portion, said first presser member being movable with reference to said first portion toward and away from said second presser member in the closed position of said second portion and said second presser member being movable with reference to said second portion toward and away from said first presser member, means for biasing said first presser member toward said second presser member, and guide means provided in said first portion for moving said second presser member toward said first presser member in response to movement of said second portion to closed position.

2. A combination as defined in claim 1, wherein said guide means is riGid with said first portion.

3. A combination as defined in claim 2, wherein said compressing means further comprises retainer means for said biasing means, said retainer means being rigid with said guide means.

4. In an apparatus for image-transfer photography, a combination comprising a housing having chamber means for positive and negative web materials and defining a path along which such materials can be advanced toward an outlet provided in the housing, said housing comprising a first portion and a second portion movable with reference to the first portion between open and closed positions in which it respectively affords access to and seals said chamber means;

and compressing means for biasing the positive and negative materials against each other during advance along a predetermined stretch of said path, said compressing means comprising a first presser member installed in said first portion at one side of said stretch, a second presser member carried by said second portion and being located at the other side of said stretch in closed position of said second portion, said second presser member being movable with reference to said second portion toward and away from said first presser member, and guide means provided in said first portion for moving said second presser member toward said first presser member in response to movement of said second portion to closed position, said guide means comprising at least one guide member mounted in said first portion for movement toward and away from said first presser member and resilient means for biasing said guide member toward said first presser member, said guide member being engaged by said second presser member and being thereby moved away from said first presser member at least during a portion of movement of said second portion toward closed position.

5. In an apparatus for image-transfer photography, a combination comprising a housing having chamber means for positive and negative web materials and defining a path along which such materials can be advanced toward an outlet provided in the housing, said housing comprising a first portion including two sidewalls and a second portion movable with reference to the first portion between open and closed positions in which it respectively affords access to and seals said chamber means;

and compressing means for biasing the positive and negative materials against each other during advance along a predetermined stretch of said path, said compressing means comprising a first presser member installed in said first portion at one side of said stretch, a roller-shaped second presser member carried by said second portion and being located at the other side of said stretch in closed position of said second portion, said second presser member having two end portions each adjacent to one of said sidewalls in the closed position of said second portion and said second presser member being movable with reference to said second portion toward and away from said first presser member, and guide means provided in said first portion for moving said second presser member toward said first presser member in response to movement of said second portion to closed position, said guide means comprising a pair of guide members each mounted on one of said sidewalls and movable toward and away from said first presser member and resilient elements biasing said guide members toward said first presser member, the end portions of said roller being arranged to engage and to displace the respective guide members in a direction away from said first presser member during movement of said second portion to closed position.

6. A combination as defined in claim 5, wherein said resilient elements are helical springs.

7. A combination as defined in claim 5, wherein each of said guide members has a cam face located in a plane which is substantially normal to the axis of said roller and sloping toward said first presser member, said end portions of the roller being arranged to travel along the respectiVe cam faces during movement of said second portion to closed position.

8. A combination as defined in claim 7, wherein each of said cam faces is provided with a notch which accommodates the respective end portion of the roller in closed position of said second portion.

9. A combination as defined in claim 8, wherein the end portions of said roller are two coaxial stubs.

10. In an apparatus for image-transfer photography, a combination comprising a housing having chamber means for positive and negative web materials and defining a path along which such materials can be advanced toward an outlet provided in the housing, said housing comprising a first portion and a second portion movable with reference to the first portion between open and closed positions in which it respectively affords access to and seals said chamber means;

and compressing means for biasing the positive and negative materials against each other during advance along a predetermined stretch of said path, said compressing means comprising a first presser member installed in said first portion at one side of said stretch, a second presser member carried by said second portion and being located at the other side of said stretch in closed position of said second portion, said second presser member being movable with reference to said second portion toward and away from said first presser member, and guide means provided in said first portion for moving said second presser member toward said first presser member in response to movement of said second portion to closed position, said guide means comprising at least one guide member mounted in said first portion for movement toward and away from said first presser member and coupling means connecting said guide member to said first portion.

11. A combination as defined in claim 10, wherein said coupling means comprises a pin-and-slot connection.

12. In an apparatus for image-transfer photography, a combination comprising a housing having chamber means for positive and negative web materials and defining a path along which such materials can be advanced toward an outlet provided in the housing, said housing comprising a first portion and a second portion movable with reference to the first portion between open and closed positions in which it respectively affords access to and seals said chamber means;

and compressing means for biasing the positive and negative materials against each other during advance along a predetermined stretch of said path, said compressing means comprising a first presser member installed in said first portion at one side of said stretch, bearing means for said first presser member, a second presser member carried by said second portion and being located at the other side of said stretch in closed position of said second portion, said second presser member being movable with reference to said second portion toward and away from said first presser member, and guide means provided in said first portion for moving said second presser member toward said first presser member in response to movement of said second portion to closed position, said guide means comprising at least one guide member movable in said first portion toward and away from said first presser member, resilient means for biasing said guide member toward said first presser member, and retainer means for said resilient means, said bearing means being fixedly secured to said first portion and being rigid with said retainer means.