HP LaserJet 1010 Service Manual - Page 50

Draft mode, MEt, Enhanced I/O, PJL overview, protect, Two-way communication

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Note Draft mode Depending on which driver is used, selecting draft or EconoMode from the driver allows the product to use approximately 50 percent less toner, extending the life of the print cartridge. MEt HP MEt effectively doubles the standard memory through a variety of font and datacompression methods. Enhanced I/O The Enhanced I/O feature allows product memory to be used for storing data received from the host computer. When Enhanced I/O is enabled, you can send more data to the product in shorter amounts of time, which allows you to return to your application sooner. Enhanced I/O has the following options: ● Auto -allows the product to use Enhanced I/O memory allocation to increase the speed of data transfer from the host computer to the product, if necessary. The default setting is Auto. ● Off -uses the minimum amount of product memory for storing data sent from the host computer. ● Page protect-allows the formatter to create the entire page image in page buffer memory before physically moving the media through the printer. This process ensures that the entire page will be printed. Page complexity (ruling lines, complex graphics, or dense text) can exceed the printer's ability to create the page image fast enough to keep pace with the image formation process. If Page Protect is disabled and a page is too complex, the page might print in parts (for example, the top half on one page and the bottom half on the next page). Some print-data loss is likely in these instances, and the product will display an error message. PJL overview When using the parallel port on the HP LaserJet 1015, Printer Job Language (PJL) is an integral part of configuration (in addition to the standard Printer Command Language--PCL). With IEEE 1284-compliant parallel cable (standard ECP cabling), PJL allows the product to perform functions such as: ● Two-way communication with the host computer through a bidirectional parallel connection. The product can communicate information to the host (such as the control panel status). ● Isolation of print environment settings from one print job to the next. For example, if a print job is sent to the printer in landscape mode, the subsequent print jobs print in landscape only if they are formatted for landscape printing. PJL commands can be sent to the printer only from a DOS command prompt and through a parallel cable, and thus apply only to the HP LaserJet 1015. DOS applications are not supported over a USB interface. 38 Chapter 4 Operational overview ENWW

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Draft mode
Depending on which driver is used, selecting draft or EconoMode from the driver allows the
product to use approximately 50 percent less toner, extending the life of the print cartridge.
MEt
HP MEt effectively doubles the standard memory through a variety of font and data-
compression methods.
Enhanced I/O
The Enhanced I/O feature allows product memory to be used for storing data received from
the host computer. When Enhanced I/O is enabled, you can send more data to the product in
shorter amounts of time, which allows you to return to your application sooner. Enhanced I/O
has the following options:
●
Auto
—allows the product to use Enhanced I/O memory allocation to increase the speed
of data transfer from the host computer to the product, if necessary. The default setting is
Auto.
●
Off
—uses the minimum amount of product memory for storing data sent from the host
computer.
●
Page protect
—allows the formatter to create the entire page image in page buffer
memory before physically moving the media through the printer. This process ensures
that the entire page will be printed.
Page complexity (ruling lines, complex graphics, or dense text) can exceed the printer’s
ability to create the page image fast enough to keep pace with the image formation process.
If Page Protect is disabled and a page is too complex, the page might print in parts (for
example, the top half on one page and the bottom half on the next page). Some print-data
loss is likely in these instances, and the product will display an error message.
PJL overview
When using the parallel port on the HP LaserJet 1015, Printer Job Language (PJL) is an
integral part of configuration (in addition to the standard Printer Command Language--PCL).
With IEEE 1284-compliant parallel cable (standard ECP cabling), PJL allows the product to
perform functions such as:
●
Two-way communication
with the host computer through a bidirectional parallel
connection. The product can communicate information to the host (such as the control
panel status).
●
Isolation of print environment settings
from one print job to the next. For example, if a
print job is sent to the printer in landscape mode, the subsequent print jobs print in
landscape only if they are formatted for landscape printing.
Note
PJL commands can be sent to the printer only from a DOS command prompt and through a
parallel cable, and thus apply only to the HP LaserJet 1015. DOS applications are not
supported over a USB interface.
38
Chapter 4
Operational overview
ENWW