Manual Print Head Cleaning And Flushing; Automatic Downtime Cleaning - Ricoh D124 Detailed Descriptions Manual

6.8.4 MANUAL PRINT HEAD CLEANING AND FLUSHING

The operator can use the User Tools to clean and flush the print heads whenever a
problem with printing occurs.
 Every execution of print head cleaning and flushing is recorded in NVRAM by a
counter (0 to 999999).
 This is done so that the service technician can keep track of how many times the
operator is cleaning and flushing the print heads with SP7212 (User Cleaning) and
SP7213 (User Refreshing).
 Humidity can affect the number of times the print heads require cleaning and
refreshing.
 For more details about manual print head cleaning and refreshing, refer to the
Operating Instructions or the Field Service Manual.

6.8.5 AUTOMATIC DOWNTIME CLEANING

Ink can thicken or dry around the nozzles if the print heads remains idle for a long
time, especially at low temperatures. This can affect the quality of printing. To prevent
the drying or thickening of ink around the nozzles, the machine will execute a
maintenance cleaning cycle appropriate for the length of time that the print heads
have remained idle. This is done automatically without intervention by the operator.
The machine monitors two phases of downtime.
 Idle time 1: Starts after the last sheet exits and all the print heads are capped
 Idle time 2: Amount of time each head has remained idle
Idle (or downtime) refers to the length of time that a print head has not been used.
For example, If the machine is used for extensive black-and-white copying and
printing over a period of several days, a count of idle time for the color print heads
(C, YM) is maintained even though the machine has not been turned off.
These idle time counts are used to execute these operations:
 Air purging (ink supply and purging, filling and cleaning, and air purging/filling
together)
 Ink supply sequence
 Cleanings and flushing (refreshing) done by the operator manually
 Ink purging done after idle time
D124 130 Detailed Descriptions