HP Designjet 2800/3800cp Service Manual - Page 339

Platen Roller Drive roller. Plot Quality Print quality. PML Printer Management Language. P/N Part Number. Power Cycle The switching of the plotter off and then on again. Preventive Maintenance Counter This is a count of the swaths the printer has performed. From this count the maintenance requirments can be calculated. Primary Colors cyan, magenta, yellow, black. Printhead Part of the ink delivery system. The printhead has a 600 dpi thermal inkjet head for firing ink droplets onto the media and a reservoir which holds enough ink for a large number of prints. The actual number of prints depends on the size and type of image being printed Printhead Cleaner The printer uses the printhead cleaner to clean and to maintain the printhead. It also seals the printhead to prevent it from drying out. Print Quality Quality of the Image. Product Line 30 Hewlett-Packard's product line of large-format, pen and thermal-inkjet plotters. PWM Pulse-Width Modulation. RAM Random-Access Memory. Raster 1. A matrix of dots, or pixels, where each pixel is defined by a bit. A bit that is "on" will print a dot on the paper. A bit that is "off" will leave the area blank. 2. A method for defining a plot directly in terms of the pixels rather than as vectors. Raster Image Processor Software that converts graphics data to pixel format. Refill Interconnect PCA The PCA located on the left hand side chassis. It connects the Refill Assembly, the Elevator Assembly, Bail Motor and the Y-axis Assembly all on to one PCA, this is then connected to the main PCA via the Refill Interconnect Cable. Refill Interconnect Cable This connects the Refill Interconnect PCA to the Main PCA. Relative Humidity The ratio of the amount of water vapor actually present in the air to the greatest amount possible at the same temperature, (from Webster's Ninth New Collegiate Dictionary, E Merriam-Webster 1991). Resolution A measure of image sharpness expressed as a number of lines per unit length. When referring to plotters, addressable resolution means the smallest move the plotter can make programmatically. RIP Raster Image Processor. RMS Root mean square. ROM Read-Only Memory. Roman A character set based on the Latin alphabet. RS-232-C interface A serial interface standardized by the Electronic Industries Association Standard RS-232-C. RTL see "HP-RTL." SAD Swath Axis Direction Sec Second(s). Secondary Colors Red, blue, green. Service Monitor Data display; display data; monitor mode. SIMM Single In-line Memory Module. Skew Misalignment. Special Paper A paper specifically developed by HP, for HP inkjet plotters. HP DesignJet CP Series Printers Glossary-5