Page Protect Page complexity (rules, complex graphics, or dense text) may 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, it may 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 printer will display the 21 PAGE TOO COMPLEX error message, alternating with PRESS GO TO CONTINUE . Page Protect allows the Formatter to create the entire page image in page buffer memory before physically moving the paper through the printer.
This process ensures that the entire page will be printed. Page Protect applies only to PCL printing. The default setting is Auto. PJL Overview Printer Job Language (PJL) is an integral part of configuration, in addition to the standard Printer Command Language (PCL). With standard cabling, PJL allows the printer to perform functions such as: G Two-way communication with the host computer through a Bidirectional Parallel Connection. The printer can tell the host such things as the Control Panel settings, and it allows the Control Panel settings to be changed from the host. G Dynamic I/O switching allows the printer to be configured with a host on each I/O.
The printer can receive data from more than one I/O simultaneously, until the I/O buffer is full. This can occur even when the printer is offline. G Context-sensitive switching allows the printer to automatically recognize the personalities (PS or PCL) of each job and configure itself to serve that personality. G 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. 5-20 Functional Information