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18 HP DeskJet 600, 700, 800, 900 & HP 2000 Series PCL Developer’s Guide
6.2 Page Layout
Referring to the previous figure, each page passed through the printer has a number of com-
ponents. Text printing is normally limited to a specific printable area within the logical page
known as the text area. The text area is entirely contained by the logical page, but may be
smaller because of margins. There are unprintable regions along the outside edges and bot-
tom of each sheet of print media. If printing is attempted outside the printable area at the bot-
tom of the sheet, data may be printed on the following sheet. If printing is attempted in the
unprintable regions, formatting or data may be lost.
The perforation skip zone extends from the bottom of the text area on one page to the top of
the text area on the next page. When the Perforation Skip Mode is turned ON, a Line Feed
that would normally move CAP into the bottom margin of the current page instead moves CAP
to the top of the text area on the next page. If the Perforation Skip Mode is turned OFF, a Line
Feed that would move CAP into the bottom margin is allowed. If text printing is attempted
within the unprintable region at the bottom of the page, a hardware page break occurs, the text
is printed on the next sheet of print media, and then a software page break occurs. The result
is an unplanned, extra page, which contains only that portion of the text which invaded the
unprintable region.
Allow ½ inch at the bottom of the page. This extra ½ inch can mean a loss of 3 lines. For
example, on an 11 inch page, the full-page length is 66 lines (6 lines per inch). However, the
effective page length is 10 ½ inches, or 63 lines.
6.2.1 Current Active Position (CAP)
CAP is the position at which the next character will be printed on the page. This position can
be moved to different points on the logical page using the cursor positioning commands. CAP
cannot be moved outside the bounds of the logical page, except when moving to another logi-
cal page.
CAP position (0,0) is at the left edge of the logical page at the current top margin position.
Since the top margin can be changed using a printer command, the physical location of the