Thank you for your answer in great detail.yes ,i did not apply the curve before printed,But I guess the adjustment of the curve will be dramatic. i will scan the film which have printed last night and upload tomorrow,thus you can see the problem intuitive.
hi jon!last night ,i printed another film,Curiously, the problem disappeared.the reason i guess is when I installed the ink cartridges, i only Cleaned nozzles two times.Now I can print the perfect negative.thank you for your helping.I will report on the use of the follow-up.
best wishes.
I am happy that it is working now!