ashes to ashes .. how long does it take to make a color negative ?

if you know it’s possible, and you know something about the chemistry of emulsion making, how long will it take you to make a color negative ?
in the past, how long did it take; who was that first one .. and, The first one who duplicated someone else?

Can you say, Agfa, Ansco… or, has the limited life of the internet set your limits? hint: December to July..

Learning to make fil¹m again … after you figured out what the word means you can begin learning what it took to know how to make film.

If you know it can be done . The patents for all of the early efforts have long since expired. Even if the patent didn’t cover everything in sequential detail , the more than 13,000 scientific publications available and in the public domain cover the full spectrum of industrial size chemical and emulsion coating through 1950. Certainly what Agfa ,Ansco ,Dupont, Kodak achieved by 1951 could be reverse engineered by a company with sufficient staff and management direction to achieve a 1945 color negative. Incorporated masking, that orange color, wasn’t always used, nor was it always orange — some masked CNs systems were yellow, yellow-green. They were matched to the print stage.

Agfa, Ansco, General Aniline and Film Corporation. Ansco was seized by the US government when WW2 began. Germany already had a color negative film, The United States seizure left Ansco with a plant that had been making that film but without the knowledge of the ingredients of the emulsion. They had trained personnel at the plant in Binghamton, but we didn’t have the deep engineering skill; not in that plant. However, Albert Marshall of Rumford chemical took over to fulfill the request of the United States government for a color film in support of the war effort. it was a success done rapidly: July 1942 the product was demonstrated to a gathering of over 200 . it was billed as the 20th century magic lantern show. –-Louis Walton Sipley, 1951.

early dye-coupler films:

• — Kodachrome — too strong blue
• — Ektachrome — weak deep reds, flesh became orange
• — Ansco — blue-green

.. to make a color negative… knowing it’s possible. In the 40s it took less than a year for one motivated, funded firm. The others, such as Kodak, evolved to a final complete status of negative and paper in six years. Recall: Kodak Ektacolor negative was launched with Pan Matrix Film for the small professional wedding studio user.

Ignore the concepts of Kodak patentees from the 80s about their practice during Kodak’s failure years.. patents, along with multiple research platforms are rich with specifics for one engaged in building something equivalent to 1950 color.

Given that the color film portion is all we are discussing; no need to design for a non-existent darkroom second step: paper, since output is to a scanner. So it is, 2020+ .
Key to a Frontier; be done. This means a full mask set isn’t required. We can design as if making a transparency without requiring a ‘warm bulb’ correction of shadows. The output device is a “minilab” updated: Frontier and Noritsu.

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Is Harman falling into the Wright brothers problem ? Or, just standard divided response. Lack of attention to goal; lack of goal?

— Film Version	— Launch Date
Harman Phoenix 200	– December 1, 2023
Harman Phoenix 200 II	– July 16, 2025
making product revisions takes	~19 months

— sloppy joe answers —

AI doesn’t know where/what to search, so it does a — lets ask the crowd — where does the biggest sound come from — there’s the answer. Learning in the age of “make a deal” know-how.

Ask AI3: About mid-century color negative-positive systems. Reason was considering why Harman was taking as much time as they were on rebuilding colour negative product.

First answer: “Chromogenic color negative film revolutionized photography by making color images more accessible to the general public. This innovation primarily began with Kodak’s introduction of Kodacolor in 1942”

Kodacolor	1942
Eastman Color	1950
Kodacolor-X	1963
Kodacolor II	1972

Second response, after suggesting they had missed Agfa. I didn’t mention any other CN films.

Year	Event
1936	Agfa launches Agfacolor Neu, the first commercially successful color film.
1942	Kodak introduces Kodacolor, the first consumer-oriented chromogenic color negative film
1946	Kodak releases Ektachrome, a reversal film that also utilizes chromogenic processes.
2009	Kodak ceases production of Kodachrome, marking the end of an era for this iconic fi

Notes:

• orange mask isn’t in the base.
• orange wasn’t the only color mask; yellow as well as green masking systems have been deployed. Some Color negatives into the 60s would display this.
• Kodak wasn’t first with color negatives
• supplemental [silver] masking has also used colored masks. dye-coupling, along with my use of imbibition matrix film, as mask ,1960 –]
• At, Lutz. “The Photochemical Industry: Historical Essays in Business Strategy and Internationalization.” Pd. D Dissertation. Massachusetts Institute of Technology ,
• “History of Bayer: 1945-1951.” History of Bayer: 1945-1951 | Bayer Global, www.bayer.com/en/history/1945-1951. Accessed 9 June 2023
• Wentzel, Fritz. Memoirs of a Photochemist. Wentzel, Fritz. Memoirs of a Photochemist, 1960.

10,26’26

1. film, to AI4 is short for film-maker, cinema, movies ↩︎