Hi Phil, On 26 May 2020, at 5:12 pm, Philip Taylor <p.tay...@hellenic-institute.uk<mailto:p.tay...@hellenic-institute.uk>> wrote:
Ross Moore wrote: I’m sorry, but this just doesn’t make any sense to me — but see further below. No, the fourth couplet is TT, where T is "Transparency". Unfortunately , it is a misnomer, since 00 = completely transparent and FE is almost opaque, which is why I spoke of "opacity" rather than transparency. Unfortunately FF is not opaque when preceded by FFFFFF, because the driver treats FFFFFF [FF] specially. As I said, it didn’t make sense to me. :-) Thanks for the clarification, and sorry for my added noise. First it is important to realise that both flattening and conversion to CMKY will take place (the document is for digital printing). When flattening takes place, RGB FFFFFF text will completely obscure the ground, and after conversion to CMYK there will then be no ink where the text occurs. Unfortunately as things are at the moment, there will be 1/256 bleed-through of the ground because the RGB white was not perfectly opaque. "knockout", tho' interesting, should not be needed. The example earlier sent shews that one can get very close to 100% white (and of course there are no white inks involved) but not to 100% and this is what I would like to achieve (and which should, IMHO, be achievable). Were it not for the fact that the driver treats FFFFFF and FFFFFFFF specially, there would be no problem at all in achieving my aim. It looks like Akira has done what you wanted, so the exercise was a success. :-) ** Phil. Cheers. Stay safe. Ross Dr Ross Moore Department of Mathematics and Statistics 12 Wally’s Walk, Level 7, Room 734 Macquarie University, NSW 2109, Australia T: +61 2 9850 8955 | F: +61 2 9850 8114 M:+61 407 288 255 | E: ross.mo...@mq.edu.au<mailto:ross.mo...@mq.edu.au> http://www.maths.mq.edu.au [cid:image001.png@01D030BE.D37A46F0] CRICOS Provider Number 00002J. Think before you print. Please consider the environment before printing this email. This message is intended for the addressee named and may contain confidential information. If you are not the intended recipient, please delete it and notify the sender. Views expressed in this message are those of the individual sender, and are not necessarily the views of Macquarie University. <http://mq.edu.au/> <http://mq.edu.au/>
