Photocopying – Projection printing and copying cameras – Multicolor picture
Patent
1995-06-06
1996-10-01
Adams, Russell E.
Photocopying
Projection printing and copying cameras
Multicolor picture
355 32, 355 68, 355 71, G03B 2772
Patent
active
055614949
ABSTRACT:
An apparatus for determining exposure amount in a copying apparatus includes: a photometric measuring device for effecting photometry by dividing an image recorded on a recording material into a multiplicity of segments and by separating each segment into a multiplicity of colors consisting of four or more predetermined colors; a storage device for storing photometric data on the multiplicity of colors obtained from photometry by the photometric measuring device; an image-density calculating device for calculating an image density equivalent to an image density obtained by photometrically measuring the image with the photometric measuring device exhibiting a spectral sensitivity distribution equivalent to that of a copying material, on the basis of the photometric data on the multiplicity of colors and the spectral sensitivity distribution of the copying material; a correction-amount determining device for determining a correction amount with respect to the image density on the basis of the photometric data on at least three colors among the stored photometric data on the multiplicity of colors; a correcting device for correcting the determined correction amount in such a manner that the correction amount becomes equivalent to the correction amount obtained by photometrically measuring the image with the photometric measuring device exhibiting the spectral sensitivity distribution equivalent to that of the copying material; and an exposure-amount determining device for determining the exposure amount by using the image density and the corrected correction amount.
REFERENCES:
patent: 4168120 (1979-09-01), Freier et al.
patent: 4168121 (1979-09-01), Freier et al.
patent: 4769695 (1988-09-01), Terashita
patent: 4814802 (1989-03-01), Ogawa
patent: 4873546 (1989-10-01), Zahn et al.
patent: 4951084 (1990-08-01), Von Stein et al.
patent: 4965628 (1990-10-01), Olliver et al.
patent: 4974017 (1990-11-01), Terashita
patent: 5016039 (1991-05-01), Sosa et al.
patent: 5019854 (1991-05-01), Mukai et al.
patent: 5023656 (1991-06-01), Terashita
patent: 5029312 (1991-07-01), Goenner
patent: 5036351 (1991-07-01), Frick et al.
patent: 5115270 (1992-05-01), Kraft et al.
patent: 5119125 (1992-06-01), Kraft
patent: 5148213 (1992-09-01), Terashita
Adams Russell E.
Fuji Photo Film Co. , Ltd.
Malloy Daniel P.
Turner Richard C.
LandOfFree
Method of and apparatus for determining exposure amount in copyi does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of and apparatus for determining exposure amount in copyi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of and apparatus for determining exposure amount in copyi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1505740