Method of developing a color negative element intended for scanning
US6589721B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2001 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | Dec 20, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2200/60
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention relates to a method of forming a viewable image from a scene exposed onto a color negative photographic film element and for producing a color image suited for conversion to an electronic form and subsequent reconversion into a viewable form comprising:color developing an imagewise exposed color negative photographic film element with a color developer as described herein said color development being carried out by contacting said film with the developer for a period of 20 to 90 seconds at a temperature of 40° C. or greater; WHEREINthe layer units of the film element each exhibits a dye image gamma of less than 1.0,the element exhibits an exposure latitude of at least 2.7 log E, where E is exposure measured in lux-seconds, and a light sensitivity of at least ISO 50,the gamma ratio of each of the red, green and blue light recording layer units is between about 0.80 and 1.30, andthe average layer thickness is 1.5 micrometers or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.