Photocopying – Projection printing and copying cameras – Detailed holder for original
Patent
1998-10-19
2000-07-11
Mathews, Alan A.
Photocopying
Projection printing and copying cameras
Detailed holder for original
355 55, 355 61, G03B 2752, G03B 2762
Patent
active
060880848
ABSTRACT:
An object of this invention is to provide an original carrier and an image reader capable of performing a focusing operation every original carrier.
To achieve this object, a slit hole 32 extending in a direction perpendicular to a film conveying direction is formed in a width enlarging portion of a film conveying path 34. Focusing charts 58 are formed on faces of a glass plate 38 fitted into the slit hole 32 on sides of the film conveying path 34 in both end portions of the glass plate 38 in its longitudinal direction. When light from a light source is transmitted through the focusing charts 58 of the glass plate 38 and is incident to a line CCD, focusing control is performed by a microprocessor so as to maximize the contrast of an image of each of the focusing charts 58. The focusing control can be also performed so as to maximize the contrast of an image of a photographic film 22.
REFERENCES:
patent: 2460060 (1949-01-01), Butler
patent: 2461405 (1949-02-01), Appling
patent: 2498278 (1950-02-01), Kaplowitz
patent: 3864033 (1975-02-01), Rieder
patent: 4857964 (1989-08-01), Pohlman et al.
patent: 4994850 (1991-02-01), Imamura et al.
patent: 5343273 (1994-08-01), Yamamoto et al.
patent: 5453817 (1995-09-01), Oka et al.
patent: 5489966 (1996-02-01), Kawashima et al.
patent: 5673104 (1997-09-01), Rottner
patent: 5835202 (1998-11-01), Rosati et al.
patent: 5859691 (1999-01-01), Rottner et al.
Fuji Photo Film Co. , Ltd.
Fuller Rodney
Mathews Alan A.
LandOfFree
Original carrier and image reader does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Original carrier and image reader, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Original carrier and image reader will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-547272