Patrick, I think I understand. You were warning against setting ifhp to convert its PostScript to TBCP before sending it to the printer, not against using TBCP at the client end.
Thanks for clarifying this, it's most helpful. -Rick Patrick Powell wrote: > > > From [EMAIL PROTECTED] Sat Apr 27 17:50:23 2002 > > Date: Sat, 27 Apr 2002 19:42:28 -0400 > > From: Rick Cochran <[EMAIL PROTECTED]> > > To: [EMAIL PROTECTED] > > Subject: Re: LPRng: TBCP > > > > In my month of Windows print driver research purgatory (I could use some > > holy water), one of the VERY FEW things which has worked consistantly is > > TBCP. In my tests with 8 "problem documents" with 8 permutations of > > operating system, driver, and printer manufacturer, NOT ONE problem was > > attributable to TBCP. > > > > In one case, it reduced the size of PostScript for printing a Word > > document with color images in it from 92MB to 22MB. > > HUH? But you must have done this on the Microsoft system... > I am puzzled... > > > I am convinced that TBCP can reliably decrease the amount of time > > required to generate, transmit, and process the kind of image-intensive > > print jobs which are becoming more and more commonplace. > > Yes... because it allows you to put binary images into a 'stream' > > > > > Before I jump feet-first into converting everything to TBCP, could you > > be more specific about the "evil things" which "have been known to > > happen"? > > > > Thanks, > > -Rick > > > > -- > > |Rick Cochran phone: 607-255-7618| > > |Cornell CIT - Systems & Operations - Net-Print FAX: 607-255-8521| > > |730 Rhodes Hall, Ithaca, N.Y. 14853 email: [EMAIL PROTECTED]| > > The problem is that some printers do not support or understand TBCP on > TCP-IP channels. The TBCP stuff was originally intended only for serial > channels. The way that TBCP works is to encode various control characters > as escape sequences. This is done by converting: > > 0xXX -> 0x01, 0xFF ^ 0x40) > > Note that if you do a Tbcp conversion and then repeat the conversion > you will bet the 0x01 converted AGAIN. > > This can lead to real headaches. -- |Rick Cochran phone: 607-255-7618| |Cornell CIT - Systems & Operations - Net-Print FAX: 607-255-8521| |730 Rhodes Hall, Ithaca, N.Y. 14853 email: [EMAIL PROTECTED]| ----------------------------------------------------------------------------- YOU MUST BE A LIST MEMBER IN ORDER TO POST TO THE LPRNG MAILING LIST The address you post from MUST be your subscription address If you need help, send email to [EMAIL PROTECTED] (or lprng-requests or lprng-digest-requests) with the word 'help' in the body. For the impatient, to subscribe to a list with name LIST, send mail to [EMAIL PROTECTED] with: | example: subscribe LIST <mailaddr> | subscribe lprng-digest [EMAIL PROTECTED] unsubscribe LIST <mailaddr> | unsubscribe lprng [EMAIL PROTECTED] If you have major problems, send email to [EMAIL PROTECTED] with the word LPRNGLIST in the SUBJECT line. -----------------------------------------------------------------------------
