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Supra endura paper response for 1610 needed


adamwooo
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  • 2 months later...

Hello, i bought the barbieri densitometer, i put the supra endura paper into machine in short process 129 sek. Until i make new paper response it wasn't possible to make paper setup. But after i have a little cyan cast on the b&w prints. I didn't calibrate the densitometer before making paper response, so i will make the second try after calibratrion of densitometer, maybe it is the problem. The black is real black colour, i think that is a little better than royal paper, more deep. There is any problem using KIS chemistry and 129 sek process with black colour.

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I have one more question, I saw when I changing paper setup the densito chanel option. Is it the master paper response ? And the paper response is the slave, for more accuracy ? How can i make the densito chanel data?

No, densito channel is not a master channel as KIS does not have that option. Densito channel is just a memory value for different paper brand densitimetar calibration, and in that way the customer can have mix paper brand in the cassettes magazines. Off course if you chose paper response (paper profile), you have to chose the correct densito channel so that combination can make a sense.

Each densito channel have to be calibrated with its own densito calibration chart which values (gray & white) are measured with external densitometar and then written on that calibration chart and entered in the calibration fields for that specific densito channel. Calibration chart can be printed from constantes folder or you can use standard paper setup print and then read it with external Status A densitometar (X-Rite if you have it as I am not happy with Barbieri Densitometar for that purpuos, for the Paper Response is OK)

Pskaro is it possible to make own densito chanel setup. How can I make it?

You can use any Densito Channel with the brand name that you do not use (Agfa, Konica...), it is just the memory field, but off course you have to then use that same (calibrated by the procedure I explained in the above text), densito channel with your existing Paper Response (Endura for ex.)

Problem with KIS densitometar is that it is not Status A and calibration target fitted with the machine is used only to calibrate Kodak Densito Channel, and even if Fuji calibration target is delivered with the machine, I would not trust the values written on it as I already discovered that when reading that calibration target with external X-Rite densiotometar.

I hope that this is the answer to your question ;)

Edited by pskaro
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Pskaro You written "Each densito channel have to be calibrated with its own densito calibration chart which values (gray & white) are measured with external densitometar and then written on that calibration chart and entered in the calibration fields for that specific densito channel". Whre can i find calibration fields for the densito chanel ? I know where can i calobrate the dks densitometer , i know how to make paper response, but i dont know where can i find densito chanel calibration fields

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The values under the calibration menu (su/tec) are the same density values as on the calibration chart (gray & white separately).

You probably received with the machine this calibration chart and this values are written on the chart and entered in the calibration menu under the Kodak densito channel (there is the menu for changing this channel to Fuji, Agfa, Konica...)

For ex. if you want to calibrate densitometar for the Fuji paper then you should print "etalonnage densitometre.PNG" and read the white and the gray with the external Status A densitometar, (sometime is necessary to multiply it by x100 to get the values for the white around 10 and for the gray around 100 as on original chart).

After that chose the Fuji densito channel under the densitometar calibration menu and enter this White/Gray values in appropriate field for each color (R/G/B) and start the densitometar calibration procedure (open the dryer, put that Fuji calibration chart between two input dryer rollers, close the cover, press Start...., and off course after calibrating the Fuji densito channel go to the Measurement menu under the first one, chose the Fuji densito channel and do the measurement procedure (similar to calibration procedure), and check if the values after reading are +-3 from the values on the Fuji calibration chart, if not repeat the calibration procedure and measurement procedure after the values are inside this +-3 tolerance.

After that, go to the paper cassette and chose for the appropriate paper magazine Densito channel (Fuji in this ex.) and paper response (Fuji in this ex.)

This procedure can be used for what ever paper even if the name off the densito channel is not the same as paper brand, (Agfa densito channel used with Konica paper), as this is only different densito channel memory, but what is important is to connect it with the proper paper response.

But all off this different densito channels have a meaning only if the customer is mixing different paper brands ;)

Edited by pskaro
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Thaks for repy Pskaro. I asked about it because i want to change the paper to supra endura form royal paper. Supra has much better wide gammut of colors. I've bought one roll of supra paper. I try to calibrate it by machine densitometer. It wasn't possible because the grey was cyan. So i made the supra paper resonse, like You said , i multiply data form my external densitometer x100 (2.53 was on densitometer, to machine i written 253). After i made paper resonse , the paper setup from machine started work. Earlier , the cyan cast despite gray not allow to make it. So i think , that better will be to make new densito chanell , after that the grey color will be the grey, and after that make paper response, and will be more accuracy. Is it good thinking?

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Idea off course is to have paper setup gray, and to get that, the key is to have good densitometar calibration (built in one).

Good densitometar calibration mostly depend off the values on the calibration chart, but I found out that Barbieri does not read this value very well. Try to read the value from the Kodak densitometar calibration test print which you received with the machine (Gray & White parts off the chart) and check if it corresponds with the value written on that calibration test print. If it is very close then your Barbieri densitometar is well calibrated.

If there is a problem with the calibration off the Barbieri densitometar it is not that important when making paper response which would be good even if it is not perfect gray, because the paper setup would shift it to the gray (complete curve, not just the 100 value).

As I written earlier, KIS densitometar (built in one) is not Status A but it is OK reading the Kodak paper, so I think that it should not have a problem with Kodak Supra paper, but maybe your original calibration chart values are not correct (or there is a problem with densitometar lamp, calibration sticker in the dryer, optical cables...), and I would not trust the Barbieri to do that properly, I used X-Rite to make Fuji calibration test print and used it for calibrating Fuji densito channel and it worked perfectly ;)

Edited by pskaro
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