THERMAL PRINTING HEAD AND PROTECTIVE COVER USED FOR THE SAME

Title:

THERMAL PRINTING HEAD AND PROTECTIVE COVER USED FOR THE SAME

Document Type and Number:

WIPO Patent Application WO/1999/038696

Kind Code:

A1

Abstract:

A protective cover (9) used for a thermal printing head having a radiating plate (l) in which a plurality of fixing holes (l0) are formed, a head base plate (2) and a circuit board (3), the radiating plate (l) being provided with a groove (la), by which an upper surface of the radiating plate (l) is divided into first and second regions (lb, lc), the head base plate (2) being mounted with a heating resistor (4) and a driving IC (5) covered with a resin coat layer (6), the circuit board (3) being provided with through holes (ll), the protective cover (9) being further provided with a body (9a) having an upper surface and a lower surface opposite to the upper surface, and a plurality of pin members (l2) extending from the lower surface, each of the pin members (l2) being provided with a slit (l2a), whereby each pin member (l2) can be press-fitted easily in one corresponding fixing hole (l0) out of the above fixing holes (l0).

Inventors:

NAGAHATA TAKAYA (JP)
YOSHIKAWA YASUHIRO (JP)
YOKOYAMA EIJI (JP)

Application Number:

PCT/JP1999/000372

Publication Date:

August 05, 1999

Filing Date:

January 28, 1999

Export Citation:

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Assignee:

ROHM CO LTD (JP)
NAGAHATA TAKAYA (JP)
YOSHIKAWA YASUHIRO (JP)
YOKOYAMA EIJI (JP)

International Classes:

B41J2/335; B41J2/345; (IPC1-7): B41J2/335

Foreign References:

JPH0994988A	1997-04-08
JPH05162348A	1993-06-29
US5223855A	1993-06-29
JPH08258309A	1996-10-08

Other References: