US3829215A - Flash copier - Google Patents
Flash copier Download PDFInfo
- Publication number
- US3829215A US3829215A US00251022A US25102272A US3829215A US 3829215 A US3829215 A US 3829215A US 00251022 A US00251022 A US 00251022A US 25102272 A US25102272 A US 25102272A US 3829215 A US3829215 A US 3829215A
- Authority
- US
- United States
- Prior art keywords
- window
- platen
- housing
- arms
- flash
- 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 - Lifetime
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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
- G03B27/00—Photographic printing apparatus
- G03B27/02—Exposure apparatus for contact printing
- G03B27/14—Details
- G03B27/18—Maintaining or producing contact pressure between original and light-sensitive material
-
- 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
- G03B27/00—Photographic printing apparatus
- G03B27/02—Exposure apparatus for contact printing
Definitions
- the unit has a housing containing a high intensity flash lamp to illuminate a window on which the original transparency and a sensitized card or film are placed.
- a platen mounted on a double hinged arm assembly is lowered onto the window and clamped by cam action in a continuous motion.
- Clamping pressure is closely adjustable to ensure high definition of copy, and the flash lamp is controlled by a switch which is actuated only at the locked position of the clamping cam mechanism.
- the flash copier described herein is a compact, fully portable unit, with which a precise microfiche copy can be set up and exposed in a few seconds.
- the unit is constructed on a housing containing a high intensity flash lamp, positioned to illuminate a window set into the top of the housing.
- An original microfiche card and the copy film are placed on the window and aligned between guides.
- Clamping pressure is applied by a platen which is mounted on a counterbalanced hinged arm assembly, provided with a handle to facilitate one handed operation.
- the handle is also hinged at the platen and has cam elements which clamp and lock the platen by continued downward motion of the handle after the platen is set in place. Adjustment means is provided for precise control of the clamping pressure.
- a controlling switch is actuated by the clamping cam mechanism at the locked position.
- a further switch may be incorporated in the handle for actuation of the flash by the operator.
- the primary object of this invention is to provide a new and improved flash copier.
- Another object of this invention is provide a new and improved flash copier in which the original and copy film are securely clamped in exposure position by a one handed operation.
- Another object of this invention is to provide a new and improved flash copier having positive clamp and lock mechanism with an interlocked flash control switch.
- Another object of this invention is to provide a new and improved flash copier which is compact, portable and simple in construction.
- FIG. 1 is a top plan view of the complete flash copier.
- FIG. 2 is a sideelevation view, with the platen clamped and locked.
- FIG. 3 is a partial side elevation view with the platen raised.
- FIG. 4 is a sectional view taken on line 44 of FIG.
- FIG. 5 is an enlarged sectional view taken on line 5-5 of FIG.
- the copier unit is constructed on a box housing 10, having a rigid transparent exposure window 12 inset into the top. Sides 14 of the housing 10 have extensions 16 projecting rearwardly and upwardly to provide bearings for a hinge rod 18 supported adjacent and parallel to the upper rear edge of the housing. On each end of the hinge rod 18 is a support arm 20, with a short counterbalance arm 22 extending in the opposite direction, both pairs of arms being fixed to the hinge rod by lock screws 24, or similar means. Support arms 20 extend parallel to each other outside housing 10, and secured between the arms is a bearing rod 26.
- a platen 28 Pivotally suspended from bearing rod 26 is a platen 28, which is a rigid block of material having a firm resilient pad 30 inset in the lower face.
- platen 28 fits on top of window 12, with the pad 30 positioned to hold a microfiche original 32 and copy film 34 sandwiched on top of the window.
- Platen 28 is biased to a raised position by counterbalance springs 36, connected between the outer ends of arms 22 and anchor pins 38 adjacent the lower ends of sides 14. Stop pins 40 are fixed in extensions l6-andengage counterbalance arms 22 to limit the upward travel of the platen.
- clamp arms 42 are pivotally mounted on bearing rod 26 inwardly of support arms 20, the clamp arms being spaced to pass closely on opposite sides of housing 10.
- the outer ends of clamp arms 42 are connected by a handle bar 44 for simultaneous operation. Closing and locking of the platen in two stages is facilitated by interconnecting each support arm 20 and adjacent clamp arm 42 by a torsion spring 46, one end of which engages a pin 48 fixed in the support arm. The other end of the torsion spring engages a pin 50 fixed in clamp arm 42 and passing through an arcuate slot 52 in the support arm.
- Each torsion spring is enclosed by a suitable cover 54.
- Each clamp arm 42 has a downwardly extending, substantially arcuate cam finger 56 having an inner cam face 58 leading into a closed end socket 60.
- a bracket 62 carrying a roller 64 under which cam finger 56 passes, the cam face 58 decreasing slightly in radius toward the closed end of socket 60, so that the cam locks securely when the roller seats in the end of the socket, as in full line in FIG. 2.
- the bracket 62 has a clearance cavity 66 to receive the end of the cam finger in locked position.
- bracket 62 is mounted on a pivot pin 68 adjacent the roller 64, and is secured at the other end by a lock screw 70 passing through a slot 72 in the bracket.
- a small block 74 fixed to side 14, and threaded through the block is a fine adjustment screw 76 which engages the bracket.
- the screw 76 is used to adjust the roller 64 precisely for the required clamping pressure by the cam, and bracket 62 is locked in place by lock screw 70
- Inside housing 10 is a high intensity flash lamp 78, with a reflector 80 positioned to illuminate window 12 evenly.
- the power supply for operating the flash lamp is conventional and may be incorporated in the unit or used as a separate element.
- a cooling fan 82 is mounted in the housing, which has a removable perforated back panel 84 for venilation and access.
- a switch 86 is mounted on one side 14 to be actuated by the end of cam finger 56 in the locked position.
- Switch 86 may be used to operate the flash lamp as the clamp mechanism reaches the locked position, or may be used as a safety interlock. In the latter instance, an operator controlled flash switch 88 would be mounted in one end of handle bar 44, for one hand operation of the platen and exposure action.
- Operation of the unit is very simple and begins with the platen and its supports in the upwardly biased open position illustrated in FIG. 3.
- the microfiche original 32 and copy film 34 are placed in position on window 12 and platen 28 is pulled down by grasping handle bar 44.
- Platen 28 is seated with clamp arms 42 still raised, as in the broken line position in FIG. 2.
- Torsion springs 46 overcomes torsion springs 46 and swings the cam fingers 56 down under the rollers 64 to the locked position. Even face to face contact between the film elements 32 and 34 is thus maintained while the flash lamp is fired to make the exposure.
- Handle bar 44 is then lifted to first unlock the cams and then lift the platen, so that the exposed film 34 can be 4 removed for developing.
- the entire operation takes only a few seconds and very little training is necessary for 'an operator to make good copies.
- the unit is equally suitable for making single copies or continuous operation for large numbers of copies.
- a flash copier comprising:
- a flash lamp in said housing directed to illuminate said window
- a platen having a resilient pad for holding film material on said window
- said platen being pivotally suspended between the other ends of said support arms;
- said support arms being biased to raise said platen clear of the window, and said clamp arms being biased upwardly from the support arms;
- clamp arms having cam fingers extending therefrom;
- cam receiving rollers rotatably ,mounted on said housing
- cam fingers having closed end sockets into which said rollers seat in the locked position of the clamp arms.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
Abstract
Description
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00251022A US3829215A (en) | 1972-05-08 | 1972-05-08 | Flash copier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00251022A US3829215A (en) | 1972-05-08 | 1972-05-08 | Flash copier |
Publications (1)
Publication Number | Publication Date |
---|---|
US3829215A true US3829215A (en) | 1974-08-13 |
Family
ID=22950149
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00251022A Expired - Lifetime US3829215A (en) | 1972-05-08 | 1972-05-08 | Flash copier |
Country Status (1)
Country | Link |
---|---|
US (1) | US3829215A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3989376A (en) * | 1973-06-12 | 1976-11-02 | Ing. C. Olivetti & C., S.P.A. | Device for positioning and covering documents in a reprographic machine |
US4382677A (en) * | 1980-01-31 | 1983-05-10 | Canon Kabushiki Kaisha | Original document presser |
-
1972
- 1972-05-08 US US00251022A patent/US3829215A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3989376A (en) * | 1973-06-12 | 1976-11-02 | Ing. C. Olivetti & C., S.P.A. | Device for positioning and covering documents in a reprographic machine |
US4382677A (en) * | 1980-01-31 | 1983-05-10 | Canon Kabushiki Kaisha | Original document presser |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: NATIONAL BANK OF DETROIT, 611 WOODWARD AVENUE, DET Free format text: SECURITY INTEREST;ASSIGNOR:ENERGY CONVERSION DEVICES, INC., A DE. CORP.;REEL/FRAME:004661/0410 Effective date: 19861017 Owner name: NATIONAL BANK OF DETROIT, MICHIGAN Free format text: SECURITY INTEREST;ASSIGNOR:ENERGY CONVERSION DEVICES, INC., A DE. CORP.;REEL/FRAME:004661/0410 Effective date: 19861017 |
|
AS | Assignment |
Owner name: ENERGY CONVERSION DEVICES, INC., MICHIGAN Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:NATIONAL BANK OF DETROIT;REEL/FRAME:005300/0328 Effective date: 19861030 |