Printing - Ricoh D124 Detailed Descriptions Manual

1.7.4 4 PRINTING

1. The carriage unit moves left and right.
 The print heads mounted on the carriage unit lay down ink on the paper.
 Each print head unit in the carriage contains the sub tanks that hold the ink.
 The paper transport fan remains on and holds the paper tightly on the platen,
so it does not shift during printing.
 If black-and-white printing was selected, only the first two print heads K1 and
K2 (both black) are used.
 If color printing was selected, then the K2, C, Y, and M print heads are used.
 If uni-directional printing is selected, then the print heads lay down ink only
when the carriage unit passes from right to left. If bi-directional printing was
selected, the print heads lay down ink on both passes, right to left and then left
to right.
2. During printing, the five feeler arms with actuators paired with OCFS (On Carriage
Fill Sensors) constantly monitor the ink level of each sub tank above the print
heads.
D124 30 Detailed Descriptions