Ricoh InfoPrint Pro C900AFP Manual page 252

Halftone CMRs:
Halftone (HT) CMRs carry the information that a printer uses to convert print jobs
into a pattern of dots that it can put on paper. Halftone CMRs can be used with
both color and grayscale print jobs.
Halftone CMRs generally specify the line screen frequency, halftone pattern, and
rotation of the halftone that they carry. Device-specific halftone CMRs might also
include the printer resolution.
A printer that uses AFP color management to print color or grayscale print jobs
must use a halftone CMR to convert the print job into a format that the printer can
reproduce in ink or toner. If a halftone CMR is not specified in the print job, the
printer applies a default halftone CMR.
Note: If you send your color print jobs to an InfoPrint 5000 printer, halftones are
applied by the print engine. As a result, the printer ignores halftone CMR requests.
You can associate device-specific halftone CMRs or generic halftone CMRs with
print jobs:
v If you know which printer is printing the job, you can associate a device-specific
v If you do not know which printer is printing the job, but you want to ensure
Because it is difficult to know which halftone CMRs should be used for the current
conditions on the current printer, We recommend that you specify halftone CMRs
generically and let the printer choose the most appropriate CMR that it has
available.
Generic halftone CMRs
You can use generic halftone CMRs when you want to choose one or more
characteristics of the halftone CMR for a print job, but you do not know exactly
which halftone CMRs are available.
When a print job specifies a generic halftone CMR, the print server looks in the
resource library for halftone CMRs that match the printer device type and model.
If the print server finds an appropriate CMR, it sends the device-specific halftone
CMR to the printer with the print job. If the print server does not find an
appropriate halftone CMR, it sends the generic halftone CMR to the printer.
If a print job arrives at the printer requesting a generic halftone CMR, the printer
compares the requested characteristics with the available device-specific halftone
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InfoPrint Manager for Windows: Procedures
You can create, install, and uninstall device link CMRs yourself. Device
link CMRs are referenced in the MO:DCA data stream and take precedence
over audit color conversion CMRs. A device link CMR specifies its own
rendering intent, which is indicated in the header of the ICC device link
profile. This rendering intent overrides any other rendering intent that is
active.
The biggest advantage of using device link CMRs is that they preserve the
black channel (K component) of the input color space when converting
from CMYK to CMYK.
halftone CMR with the print job (or with AFP resources inside the print job).
The printer uses the halftone CMR that you specify.
that it uses a halftone CMR that has certain characteristics, such as a specific line
screen frequency, you can associate a generic halftone CMR with the print job.