Xref: utzoo comp.graphics:7687 comp.sys.ibm.pc:35589 Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!purdue!bu-cs!bloom-beacon!spdcc!ima!esegue!johnl From: johnl@esegue.segue.boston.ma.us (John R. Levine) Newsgroups: comp.graphics,comp.sys.ibm.pc Subject: Re: Print a 75 ppi image on a 300 ppi laserprinter Summary: RTFM, the printer does all the work Message-ID: <1989Sep30.062340.6859@esegue.segue.boston.ma.us> Date: 30 Sep 89 06:23:40 GMT References: <814@dukempd.phy.duke.edu> Reply-To: johnl@esegue.segue.boston.ma.us (John R. Levine) Distribution: usa Organization: Segue Software, Cambridge MA Lines: 17 In article <814@dukempd.phy.duke.edu> fang@dukempd.phy.duke.edu (Fang Zhong) writes: >We want to print the [75 dpi] images on a HP series II laserprinter with the >resolution of 300 pixel per inch. ... > We were told that we needed to buy additional memory expansion module >for the HP series II laserprinter in order to print 300x300 images. ... If you read the manual that came with your printer, you'll find that Laserjets can print at 300, 150, 100, or 75 DPI. At coarser resolutions it uses blocks of 300 dpi dots to represent each logical dot. The printer buffers the logical dots, so that at 75 dpi, even the original Laserjet I could print a full page bit image. It's no big deal to program; I wrote a little program to dump 100 dpi screen images in an afternoon. -- John R. Levine, Segue Software, POB 349, Cambridge MA 02238, +1 617 492 3869 johnl@esegue.segue.boston.ma.us, {ima|lotus}!esegue!johnl, Levine@YALE.edu Massachusetts has 64 licensed drivers who are over 100 years old. -The Globe