Photocopying – Projection printing and copying cameras – Copying both sides of original
Patent
1983-03-17
1985-02-12
Hix, L. T.
Photocopying
Projection printing and copying cameras
Copying both sides of original
G03B 2732, G03B 2752
Patent
active
044987617
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention pertains to a microfilm camera for photographing the front and back of translating documents in a side-by-side relation upon a strip of film.
BACKGROUND ART
U.S. Pat. No. 3,981,580 discloses what superficially resembles the subject invention. However, only two narrow mirrors are used and the images of the front and the back of the document are exposed upon the microfilm in the comic-mode. That is, one document image is followed by the next, and the next, along the film strip as pictures in a comic strip. The front of each document is in one row and the rear of each document is in a parallel row. This is a rather common mode, since it is easy to accomplish.
U.S. Pat. No. 3,885,871 discloses only an optical system, but one that does accomplish the cine-mode. That is, one document image is above the other, as are the images on a motion picture film. The front and rear of each document are side by side.
However, large mirrors (six) are employed so that the whole extent of the document is carried through the mirror optical system to the microfilm strip. This makes the apparatus undesirably large.
Means to illuminate the documents or means to demotionalize the image thereof are not shown nor mentioned. Thus, disclosure is incomplete. It may be presumed that a fast strobe flash of illumination would be required, but such is not shown nor mentioned, nor are necessary means to synchronize this illumination with the motions of the documents and the film.
SUMMARY OF THE INVENTION
A camera in which images of typically a continuously moving succession of spaced rectangular documents, such as bank checks, are demotionalized and the image of the front and back of each document is exposed on a temporarily stationary film strip. This is the cine-mode, with the direction of motion of the document transverse to the length of the film strip during exposure. The images of the front and the back of each document are side-by-side across the film strip.
Demotionalization of the images to stationary status is accomplished by a single mirror that is rotated by a galvanometer synchronously with the motion of the documents. Images of both sides of each document are impinged upon the single mirror, which is rapidly rotated back to its starting position during the traverse of the space between documents.
This system films documents upon demand rather than at regular intervals, as would be the case for a uniform succession of documents. Thus, the documents may be irregularly spaced and/or intermittently available.
The image of the rear of the document is impinged upon the single mirror by two oppositely inclined mirrors behind the document path and a first group of three mirrors; while an image of the front of the document is impinged upon the single mirror by a second group of three mirrors. The last two mirrors of each group of three rotates the images by 90.degree. to the cine-mode.
One objective lens receives the front and rear images from the single mirror and images these, side-by-side, on the stationary film strip. The film strip is moved by a vacuum capstan during the interval between arriving documents, and is held stationary by a vacuum platen during exposure.
The apparatus is controlled by electronic means having plural microprocessors, each with supporting memories, clocks, and input/output (I/O) interfaces. Overall instructions from the user are converted to correlated control information for document and film drives, scanning galvanometer actuation, and illuminated display indicia for exposure upon the microfilm.
BRIEF DESCRIPTION OF DRAWINGS
FIG. 1 is a perspective view of the invention.
FIG. 2 is a block diagram of the electronic digital control.
FIG. 3 is a block diagram of the supervisor board of the digital control.
FIG. 4 is a block diagram of the servo/display board of the digital control.
FIG. 5 is a block diagram of the display/interface board of the digital control.
FIG. 6 is a block diagram of the galvo driver and servo amplifier for translating the film strip.
FIG. 7 is
REFERENCES:
patent: 2747462 (1956-05-01), Jones
patent: 3212399 (1965-10-01), Walter
patent: 3885871 (1975-05-01), Galatha et al.
patent: 3981580 (1976-09-01), Yamashita
Langford Forrest L.
Motamed Armond
Therien Robert D.
Williams Robert D.
Hix L. T,.
Lubcke Harry R.
Rutledge Della J.
Terminal Data Corporation
LandOfFree
Cine-mode camera does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cine-mode camera, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cine-mode camera will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1386974