Mac OS X: About printing with a USB-to-parallel cable

 
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Old 10-12-2009
Mac OS X: About printing with a USB-to-parallel cable

The printer drivers included with Mac OS X are designed to work with many printers via a USB or network connection. However, Apple has not tested the drivers with USB-to-parallel cables, converters, or adapters. If you use a USB-to-parallel cable, these issues may occur: the print queue may stop, pages may not print completely, a "communications" alert may appear, or when adding a printer no printer driver may be found, even though the printer's software is installed. In Mac OS X v10.2.x, using such a cable could cause Print Center to unexpectedly quit.

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ULPT(4) 						   BSD Kernel Interfaces Manual 						   ULPT(4)

NAME
ulpt -- USB printer support SYNOPSIS
To compile this driver into the kernel, place the following line in your kernel configuration file: device ulpt Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): ulpt_load="YES" DESCRIPTION
The ulpt driver provides support for USB printers that follow the printer bi- or uni-directional protocol. The bits in the minor number select various features of the driver. Minor Bit Function 64 Do not initialize (reset) the device on the port. Some printers cannot handle the reset on open; in case of problems try the unlpt device. HARDWARE
The ulpt driver provides support for USB printers and parallel printer conversion cables, including the following: o ATen parallel printer adapter o Belkin F5U002 parallel printer adapter o Canon BJ F850, S600 o Canon LBP-1310, 350 o Entrega USB-to-parallel printer adapter o Hewlett-Packard HP Deskjet 3420 (P/N: C8947A #ABJ) o Oki Data MICROLINE ML660PS o Seiko Epson PM-900C, 880C, 820C, 730C FILES
/dev/ulpt? device with reset /dev/unlpt? device without reset SEE ALSO
lpt(4), usb(4) HISTORY
The ulpt driver appeared in NetBSD 1.4. This manual page was adopted from NetBSD by Tom Rhodes <trhodes@FreeBSD.org> in April 2002. BSD
November 22, 2006 BSD