(57) A printer comprising: a frame (10), a feed roller rotatably supported in the frame
(10) for advancing a recording medium, a sheet support plate (26) for supporting said
recording medium, a guide rail (28) extending in parallel with an axial direction
(Y) of the feed roller, and a carriage (30) guided at the guide rail (28) and carrying
a printhead (34) facing the recording medium on the sheet support plate, the frame
(10) being composed of a support structure (12) and two plate-like function blocks
(20), which are supported on said support structure (12) at both ends of the feed
roller (24) so as to extend in respective planes (X-Z) normal to said axial direction
(Y), and which support the guide rail (28) and the sheet support plate (26), wherein
the feed roller is rotatably supported in two bearings (22), each of which has a bearing
case (46), each bearing case (46) is supported on a member (18) of the support structure
(12), each of the function blocks (20) defines a downwardly open V-shaped notch which
is supported on the peripheral surface of one of the bearing cases (46) at exactly
two points, and the guide rail (28) rests on V-shaped top surfaces of the function
blocks (20) and is thereby accurately positioned in both directions (X,†Z) normal
to said axial direction (Y).
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