Category: dye transfer

Labnotes–Feb 24

Posted on Posted in babl, diy filmsc, dye transfer, labnotes, overnight notes, the Lab

 two ways of minimizing dye bleeding. We always dried our 
prints on a drum dryer. The other was not to condition paper for more 
then thirty minutes. Any left over paper was used for test prints. — dye transfer

Other notions collected this week

Early reference made to Three-color methods and processes with special detail about Jos-Pe and Pinatype.

I’ve been going through notes on matrix making along with tanning methods: why developer replaced bleach.

finding the person behind the process leads to much more information about the process. These two people were the keys to Kodak’s emulsion coating discoveries. Nadeau and Starck are on many patents that would be key to making matrix film or Flexichrome emulsions.

While digging into the past there is the challenge of staying focused, limiting attention, and missing serendipitous materials such as:

Making Film: Subbings

Posted on Posted in Carp Fishing, dye transfer, overnight notes

Kodak’s ‘corona’ people where: Yost & Heidke — US3582333 as example
Yost & Willison — US3573916 as example
back around ’12 there was a corona discharge unit made by DIY — posted on YT
corona discharge has short utility as subbing — 24hrs or so. 
3M patents show using the corona to get the subbing started — 
— charge it
— coat with your gel+ components that aren’e light sensitive. this permits you to store a subbed roll for use later

corona discharge causes coating (partial reversal) problems in color materials if they are coated soon (an hour) after being charged. a Yost patent discusses.

an earlier, more fundamental approach is in
 PHOTOGRAPHIC FILM SUBBED WITH HARDENED GelatinGale F. Nadeau and Clemens B. Starck, Rochester, N. Y., assignors to Eastman Kodak Company, Rochester, N. Y., a corporation of New Jersey Application September 16, 1939, Serial No. 295,268

Debunk: Who Made Matrix film? An absurd answer: US Military (army) . That is foolish; the military doesn’t make anything. Not the US military. They may contract for it from some private firm, such as Kodak, or Defender, or ANSCO, or DuPont, but they don’t make anything — not even bullets and boots.

Kilborne made CCA (Tampa) matrix film. Later, they coated Dr. Patterson’s (DTC; Houston) orthomatrix. It had too fine a grain. Matrix film should be a cubic grain, irregular distribution sizes for easier tanning. Defender /DuPont was an original maker of matrix emulsion. Technicolor purchased from Kodak. Fuji made matrix film .

Namedrop: Bob Pace. In NYC he printed for Penn; later he was at Graphic Process Co. (Hollywood) and Pace Color Prints. Then, at Frog Prince (San Francisco)

One place of learning: High School of Printing (49th Street)