SOL Spectrophotometer (HP Latex 360)
The SOL is a color sensor located on the left side of the carriage. The main function of the SOL is to measure
color samples printed on the loaded substrate, and then placed in the print platen zone.
Before taking any color measurement, the SOL must be initialized. The SOL initialization process takes
approximately 7 minutes. This process consists of three steps:
●
Sensor switch on
●
Sensor warm up
●
Sensor calibration
When the initialization process has finished, the shutter opens automatically and the carriage is moved along
the scan axis to place the SOL on top of each sample and take a color measurement. After the
measurements, the shutter is closed, and the sensor is switched off.
Tetris
The Tetris is used to align the printheads, and to locate the edges of the substrate and measure its size. The
alignment procedure consists of a series of patterns first printed, then scanned using the Tetris, and finally
an internal process is used to correct the timing of when and where the nozzles of the printheads fire, and
detect any possible nozzle-out issues.
Scan-axis encoder
The line encoder is located on the carriage; it measures and counts the movements of the scan axis. An
optical, infrared wavelength encoder is used: the same type of encoder used in most of the HP large-format
printers. The encoder signal is converted to LVDS logic levels, and directly routed through the data TC.
Printhead flex
To connect the carriage to the printheads, a delicate flexible circuit with small golden dimples is used.
Printheads are inserted into unique slots and a spring-loaded mechanism pushes the electrical contacts of
the printheads into the printhead flex, which subsequently connects the printhead to the carriage electronics.
Printhead flexes are the most delicate and sensitive part of the carriage. If the printheads are inserted with
too much force, or they are misaligned, they can easily be damaged.
Ink Supply Station (ISS) Electronics
Description
There are two ISS PCAs (as in the DJ L25500/L26500 printers).
ENWW Electrical system 9
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