How to be a color developer containing (Reversal) Bath

Anon Ymous · Jul 9, 2020

mohmad khatab said:
God bless you
you're a great man
Greetings to all the brotherly people of Greece

Is there an urgent need to move the reel while it is exposed to lamp light?
Or is it sufficient only for the lamp light to be spread evenly across the surface of the pulley?
- Exposure time, 2 minutes per side or 1 minute?

I suspect there is. The film is still on the reel and it can cast shadows on some parts of the film. If you spin it, these shadows will not be on specific spots on the film, so the chance of having irregularities in density because of them is eliminated. I'm using 2' per side, so 4' for each film. It is probably far more than what is actually needed, but it makes me feel better. I could conduct some tests with shorter times and see what difference it makes, but I guess I'm lazy.

Anyway, this is my way of doing things, not the only proper way. It has worked well for me, give it a try.

halfaman · Jul 9, 2020

mohmad khatab said:
First - Is this process valid from modern (100) & (valvia) positive films?
Second - If the answer is yes, will we need to take the first two steps that are before the first developer step?

Third - Why did Kodak re-publish that document in the year 2000? There were no films at the time being produced according to the emulsion (E4).

First - It should work, all formulas are very similar to others you can find about E-6.
Second - The steps before FD are for hardenening the emulsion. E-6 films are already hardened so you can skip them.
Third - Wikipedia has something to say about it.

The process (E-4) has been discontinued but was used up until 1996 for Kodak IE color infrared film, due to legal commitment by Kodak to provide the process for 30 years.

Raghu Kuvempunagar · Jul 9, 2020

mohmad khatab said:
- I noticed that there are several professional laboratories in Southeast Asia that are still providing the chip development service using that formula (E4) ..

@mohmad khatab: This person seems to have used E4 processing for Fuji Provia. You can perhaps try reaching out to him and inquire.

Donald Qualls · Jul 9, 2020

mohmad khatab said:
Why do you hate benzyl alcohol? It is a very gentle and polite solution and does not offend anyone.

I don't hate benzyl alcohol specifically. I hate spending money unnecessarily. If you don't need it, why buy it?

mohmad khatab · Jul 9, 2020

halfaman said:
First - It should work, all formulas are very similar to others you can find about E-6.
Second - The steps before FD are for hardenening the emulsion. E-6 films are already hardened so you can skip them.
Third - Wikipedia has something to say about it.

The process (E-4) has been discontinued but was used up until 1996 for Kodak IE color infrared film, due to legal commitment by Kodak to provide the process for 30 years.

The Spanish colleague
I did not understand your response ,,
I think I may have had some dementia. I don’t know, or maybe you just couldn't get your idea straight.
- The recipe was published in 2000, while E4 films were officially halted in 1996 - which means that Kodak was not legally obliged to republish that document.
Inevitably, there are goals (perhaps technical or economic) behind this decision to republish that brief.
- I don't trust wiki articles on photochemistry. Because the person who writes these articles is a mostly anonymous person and we do not know anything about his scientific position and most of the articles carry the point of photographic chemical view and his personal experience and he is often not a neutral party and as long as he is an unknown person he is a source of doubt.
- I inquired about the two steps that are used before the first developer, are these steps considered of paramount importance for the success of the whole process or are they only steps for emulsion (E4)

mohmad khatab · Jul 9, 2020

Donald Qualls said:
I don't hate benzyl alcohol specifically. I hate spending money unnecessarily. If you don't need it, why buy it?

.Dear brother .
Is this availability of 1% usefulness still? So I'm going to get it, it's cheap (five dollars one liter)
- If that item will do harm 1%, n will not bring it.
What do you do if you were my place ..
Greetings to you, honorable man.

Donald Qualls · Jul 9, 2020

I don't know enough about E4 or E6 to say if benzyl alcohol is helpful or harmful -- nor am I a biochemist to know if it's harmful to the human body (though it's listed as one of the alcohols that can cause skin irritation due to defatting the skin surface.

mohmad khatab · Jul 9, 2020

Donald Qualls said:
I don't know enough about E4 or E6 to say if benzyl alcohol is helpful or harmful -- nor am I a biochemist to know if it's harmful to the human body (though it's listed as one of the alcohols that can cause skin irritation due to defatting the skin surface.

Wow
Oh my God .
This is interesting information.
I should check the severity of this item.
If it is really an item that causes health problems, then I should think a lot and check the percentage of damage that will befall the developer if we delete this item.
If it does not affect a large percentage, then we can delete it with a clear conscience.
But if there is a possibility to use it in a safe way (wearing gloves and a muzzle) if this will fulfill the purpose and be a safe situation, then there is nothing wrong and there is no problem ,,,
Photochemistry in its entirety includes many risks and it is worthwhile to have some daring in order to go through the experiment. But the measure must be calculated, taking into account the necessary safety precautions.
God bless you ,,
My greetings to our brothers in Nort Carolina, this kind-hearted people.

Raghu Kuvempunagar · Jul 9, 2020

@mohmad khatab: if your primary purpose is to sell colour chemistry to customers, I suggest you don't deviate from the formula/process that's prescribed by Kodak. None of the users of DIY formulas would have tested their chemistry as extensively as Kodak and if your customers face some issue they'll not be able to troubleshoot and you'll face their music. If you decide to use E4 processing, just strictly follow what Kodak recommends and your headaches will be fewer.

Donald Qualls · Jul 9, 2020

mohmad khatab said:
Wow
Oh my God .
This is interesting information.
I should check the severity of this item

When in the mixed chemistry, this isn't a major issue -- mainly because the color developer itself carries a similar warning (I'm just now clearing up some skin issues that resembled psoriasis on a couple fingers, seemingly caused by tank leaks when processing C-41 -- I now wear gloves for this process). For reference, methanol and denatured ethanol carry the same warning -- the irritation is due to the alcohol removing the natural skin oils, and washing with moisturizing soap followed by a common lotion will likely avoid problems.

mohmad khatab · Jul 9, 2020

Raghu Kuvempunagar said:
@mohmad khatab: This person seems to have used E4 processing for Fuji Provia. You can perhaps try reaching out to him and inquire.

My Indian brother
How do I communicate with this man, that page has only so many beautiful pictures and there is no box for communication,
At the same time, I do not remember the password for the Yahoo account, maybe I lost it a long time ago.
- This guy should really contact him - I'm really excited

mohmad khatab · Jul 9, 2020

Donald Qualls said:
When in the mixed chemistry, this isn't a major issue -- mainly because the color developer itself carries a similar warning (I'm just now clearing up some skin issues that resembled psoriasis on a couple fingers, seemingly caused by tank leaks when processing C-41 -- I now wear gloves for this process). For reference, methanol and denatured ethanol carry the same warning -- the irritation is due to the alcohol removing the natural skin oils, and washing with moisturizing soap followed by a common lotion will likely avoid problems.

My American brother is from North Carolina
May God bless you - I wish you good health and wellness.
Thank you very much for your great advice.
You are truly a man who deserves respect and appreciation.
Greetings to you from the bottom of my heart.

mohmad khatab · Jul 9, 2020

Raghu Kuvempunagar said:
@mohmad khatab: if your primary purpose is to sell colour chemistry to customers, I suggest you don't deviate from the formula/process that's prescribed by Kodak. None of the users of DIY formulas would have tested their chemistry as extensively as Kodak and if your customers face some issue they'll not be able to troubleshoot and you'll face their music. If you decide to use E4 processing, just strictly follow what Kodak recommends and your headaches will be fewer.

My Indian brother
Regardless of the issue of selling that formula or using it in person ..
I find myself inclined to agree with your point of view, since it is very logical,
God bless you

Raghu Kuvempunagar · Jul 9, 2020

mohmad khatab said:
My Indian brother
How do I communicate with this man, that page has only so many beautiful pictures and there is no box for communication,
At the same time, I do not remember the password for the Yahoo account, maybe I lost it a long time ago.
- This guy should really contact him - I'm really excited

Flickr mail help center.

MattKing · Jul 9, 2020

mohmad khatab said:
Third - Why did Kodak re-publish that document in the year 2000? There were no films at the time being produced according to the emulsion (E4).

In 2000, there may still have been some E4 process arial films around in government and industrial inventories.

mohmad khatab · Jul 9, 2020

Raghu Kuvempunagar said:
Flickr mail help center.

I did not understand how to call this man.
My Indian brother: Why don't you want to help and call this mysterious man?
You have - powers and you can communicate with him and perhaps he will answer you.

mohmad khatab · Jul 9, 2020

MattKing said:
In 2000, there may still have been some E4 process arial films around in government and industrial inventories.

Perhaps your point of view is correct. why not .
I really don't know what kind of aerial films the E4 process uses.
As far as I know the color aerial films use the process ( AN6) or something like that I don't quite remember.

mohmad khatab · Jul 10, 2020

welcome everybody
I would like to thank my Greek friend Anon Ymous for his encouragement and patience with me in explaining the details of the manual re-exposure.

Raghu Kuvempunagar And I thank my Indian friend for his great dedication in providing lasting support

I thank my American friend Donald Qualls from North Carolina for his constant encouragement and great patience in responding to inquiries.

I thank from the bottom of my heart my professor and permanent teacher, the respected engineer Rodolfo Rudeofus from Vienna .. God bless him. I thank him for his patience for my stupidity and to calmly deal with my scientific potential, with great patience, lack of despair and great perseverance, and this man will not be able to fulfill his right of words of thanks and praise throughout my statement.

The process test (AP41) passed as you saw it in a dream.
WYSIWYG Display results with a separate post

Many thanks to the Ukrainian colleague who brought this version of the great Russian books
Mr Vovanuhc

Raghu Kuvempunagar · Jul 10, 2020

mohmad khatab said:
The process test (AP41) passed as you saw it in a dream.

Nice! Which film did you develop in AP41 process? Somebody previously reported that Provia gives good results in this process though it's hard to conclude anything just by looking at the scans posted.

mohmad khatab · Jul 10, 2020

Raghu Kuvempunagar said:
Nice! Which film did you develop in AP41 process? Somebody previously reported that Provia gives good results in this process though it's hard to conclude anything just by looking at the scans posted.

Kodak Film (E100) 120mm - Expired - I do not have any picture that I can view now ,,, since the film is 120mm and there is no way to scan now, but I can take a picture on the mobile if it matters to you a lot

mohmad khatab · Jul 17, 2020

My Greek colleague
My American colleague
My Indian colleague
My Austrian colleague is currently unavailable and is in Greece to spend his annual leave with his relatives and I cannot communicate with him at the moment.
On the whole, the AP41 appears to have succeeded, as Mr. Ron Mawry expected.
- Yes, he said that before his death.
- He said that the German developer (T32) is = (CD4) at 98%. Indeed, his expectations were correct.
- I will show you the results later,
But I am currently in the context of the main topic of this post.
- Manual re-exposure using a lamp, she succeeded with me in two pictures and when I tried to develop an entire roll she did not succeed with the image I was looking for and left a rather blue fog ,,,
After that, I prepared a re-exposure solution for Fuji formula, the insulation material was modified, and Calgon
Everything works great and great.
- But the basic idea of this post, is how to incorporate fluid (re-exposure) into a color developer.
- I will wait until I hear some advice

< Reversal solution>
Calgon.... 3.0 g
Stannous chloride dihydrate 1.0 g
p-aminophenol 0.1 g
Sodium hydroxide 8 g
Glacial acetic acid 15 mL
Water to make 1,000 mL
pH 6.00

Randy Stewart · Jul 25, 2020

Kodak's lab standard for testing E-6 is use of light reversal, just because it provides a full exposure of emulsion without introducing variables from various compounds and concentrations of chemical reversal formulas.The reason for chemical reversal in E-6 is that it makes the process easier to mechanize and automate. It is not because chemical reversal somehow does a better job, increases color saturation, or any other urban legend. I prepared my own E-4 compounds back in that day, and light reversal was the SOP. When E-6 came along, I updated my chemistry and stayed with light reversal because the critical element in Kodak's reversal bath was simply not practically available, and no one had a better idea.

Raghu Kuvempunagar · Jul 25, 2020

Randy Stewart said:
When E-6 came along, I updated my chemistry and stayed with light reversal

Is your light exposure method the same as what @Anon Ymous described earlier in this thread?

halfaman · Jul 25, 2020

Randy Stewart said:
Kodak's lab standard for testing E-6 is use of light reversal, just because it provides a full exposure of emulsion without introducing variables from various compounds and concentrations of chemical reversal formulas

I agree when the reversal agent and CD is on the same bath, but a stand-alone chemical fogging should be as reliable as light fogging.

mohmad khatab · Jul 25, 2020

Randy Stewart said:
Kodak's lab standard for testing E-6 is use of light reversal, just because it provides a full exposure of emulsion without introducing variables from various compounds and concentrations of chemical reversal formulas.The reason for chemical reversal in E-6 is that it makes the process easier to mechanize and automate. It is not because chemical reversal somehow does a better job, increases color saturation, or any other urban legend. I prepared my own E-4 compounds back in that day, and light reversal was the SOP. When E-6 came along, I updated my chemistry and stayed with light reversal because the critical element in Kodak's reversal bath was simply not practically available, and no one had a better idea.

halfaman said:
I agree when the reversal agent and CD is on the same bath, but a stand-alone chemical fogging should be as reliable as light fogging.

Good morning, my friend ,
Please give me some options and examples so that I can understand it accurately.

How to be a color developer containing (Reversal) Bath

Anon Ymous

halfaman

Raghu Kuvempunagar

Donald Qualls

mohmad khatab

mohmad khatab

Donald Qualls

mohmad khatab

Raghu Kuvempunagar

Donald Qualls

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