Device for feeding constant pressure fluid.

摘要

In a nonimpact printer, a device (2) is provided for feeding a constant pressure fluid to a nonimpact printing head (1) reciprocally movable to scan across a recording sheet. The feeding device (2) is formed with a pair of identical first and second chambers (6, 7) connected respectively to first and second sections (3a, 3b) of a conduit through which the fluid is supplied from a source (4) to the device. Fluid communication is established between the first and second chambers (6, 7) by a connecting channel (8) which is smaller in cross section than the cross section of the first and second chambers (6, 7) and is connected to the printing head through a narrow passageway (9).