Category: da net

JOBO Patents

Posted on Posted in da net, labnotes, minimum daily requirement

Many have expired. JOBO wasn’t generous in their search for prior art, particularly on reels and water jackets.

Hobby men bragging about their tool raised the question. Germany or China: who do you think is their favorite maker of things mechanical? As always, consider their fear of foreign languages.

When searching, use :JOBO LABORTECH.

idpublication datetitle
US-4448365-A1984-05-15Film developing spool 
FR-2503403-A11982-10-08DEVELOPMENT DRUM FOR PHOTOGRAPHIC EMULSION MEDIA 
DE-3941492-A11991-06-20DEVICE FOR DEVELOPING PHOTOMATERIAL 
DE-3208968-A11983-09-22
Device for developing photographic paper 
EP-0076869-A11983-04-20Device for the development of photographic material in a rotatably driven cylindrical drum 
US-4473283-A1984-09-25Arrangement for developing photomaterials in rotatable drum 
DE-3101706-A11982-08-26Device for developing photographic material having a rotating drum 
DE-3143635-C21983-10-27Discharge device for treatment liquids of a device for developing photographic material 
DE-3113465-A11982-10-14Processing spool for holding a photographic film strip in spiral form 
DE-3102074-A11982-08-19Device for developing photo material having a cylindrical drum which is driven to rotate 
JOBO Patents

Key personnel: Helmut Petsching, Walter Kremer, Rainer Bernhardt, Johannes J. Bockemuehl-Simon

2010 “insolvency”

Some Past concerns

  • Jul, ’08 [among first posts on Forum] “I think the tempering part of my Jobo CPP-2 is busted.I’ve noticed that lately it doesn’t seem to warm up the water.
    Anything I can do to fix it?”

  • Aug, ’08 “The fabrication of parts was discontinued in November of 2006,and Omega-Satter USA took over the assets of Jobo photo processing products. I have no idea where you would get a “repair.” The usual fault was the circuit board, which was easy and cheap to replace some years ago. Now, whatever parts you can buy is dependent on wherever you can find them. After using a Jobo for some time you will realize that it would not be the end of the world if it gave out, and lots of film people have never used one”

  • Sep, ’23 “when you want a reliable machine working for 30+ years, you have to pay a certain amount of money.Also if you consider that the JOBO products are produced in Germany with highest environmental standards and protection + social standards for the workers (none of that is given in China).“

  • Sep, ’23 “I have a CPP3 Jobo unit that is not working properly right now. the control panel is not operating and I am told by Cat Labs who sold it to me that its probably the fuse. Problem in this unit some genius in the factory decided to put the fuses in the guts of the motor unit and taking it apart is not a user friendly issue. I am being told a new motor is going to cost me $3000 to replace which is 2/3 the cost of the machine when I bought it. “

Amateur Quest.ions

Posted on Posted in babl, da net, overnight notes, the LabTagged ,

The outpost of the bachelor herd. Those old timers who didn’t do the stuff they will be asked about; they’ve become the experts.

  • they ask shopping questions. They use the forum as if it were a sales counter on Saturday, the day the weekend warriors get to pretend they do THIS for real.
  • the same group rejects, out of ignorance and arrogance, the question of a newcomer. New in the process, not in imagination– at least imagination prompted by broader reference imagery than the Snobby Hobby.

Stages of the meaning of amateur: what do they provide us? How can the task of understanding be accelerated? Follow a thread, re-constructed for revelation of the question-response cycle of early participants in an online community of practice.

One person. the OP, is a professional lab printer with many years of experience. As he ventures further away from the longtime standard darkroom print, he seeks out answers from the unknown members of a forum. [this took place in 2016 (over 2 days) ] The general topic filters doesn’t seem to be retained; it becomes a topic in which expertise dissolves — it doesn’t stay with the group, no matter how many times it is repeated — the group mind has no memory. They don’t learn.

Oddly, the professional lacks the knowledge, therefore, must ask a group of unknowns. He, likely, assumes they have more experience than they do– he is, even more likely, hoping they have more experience than he does.

Why would he assume that they know how to make studio photographs with filters that will be solarized? None of them exhibits solarized work. Few of them show anything other than landscapes; typical outdoor scenics of the great west.

Effect of filter. Effect of solarization.

Effect of lacking foundation skills to be a professional: will rely upon those of lesser skills. Probably meaning you haven’t become an independent, valuable provider to those with ability to pay well. Your chances of survival go down if the skill in your market rises. As widespread darkroom skill declines, you get to survive. Luckily, that is the course of the century. The lights are being turned off.

// success is timed. Multiply your costs factor. A well defined question provides pathway to correct, useable answer. They are right about one thing: a book is better than them.

Wratten 12 (Y)
Wratten 11
Wratten 44 (cyan)
Wratten 25 (red)
contrast with BW film is relative to other colors.

Light source matters, as does color sensitivity of the BW film.

along similar lines, at least in the same quadrant of that (above) 2 year old note: we get another request for information from the same professional.

an adage pops up: you can lead a horse to water…

The person who can’t find information on their own, isn’t the person who will use the information well. Locating a vendor is an elementary part of running a business. Asking the hobby world makes you a hobbyist — and a foolish one, in this case.

Reliance upon a small group makes you either on the advance or the decline. The hobby forums are not the leading edge of chemical photography.

The conversation is complete. My observation: the newcomer should leave, so should the old timers.

Advise, constant, recurring: don’t ask the forums. In old ‘cology it was said: “don’t give away your eyes.”

You will learn more about your work by doing it. Don’t ask them, they really never did succeed. The Fromm’s and Friends are only noticed because they hang out in a space someone else provided. The tour bus drops you off where they can park, not where you need be.