No sure what you want for a "no curve" profile.
There are several people who do negs and you ought to follow one of their workflows.
See www.ronreeder.com for example.
Roy
On Thu, Jan 28, 2016 at 10:21 PM, kayeffdubphoto@... [QuadtoneRIP] <QuadtoneRIP@yahoogroups.com> wrote:
I've been struggling to understand how to create an ink descriptor file (profile) for OHP. I'm making negatives for alt process (pt/pd) printing. I have samples for a 3880, and I know how to make and measure the linearization curve in photoshop, but I'm stuck on creating the "no curve" profile. Can anyone point me to one? Thanks!