Ink jet print head

Details Ink jet print head Ink jet print head

2006-06-13

2006-06-13

Meier, Stephen (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S068000

Reexamination Certificate

active

07059707

ABSTRACT:
To prevent corrosion and disconnection of an anisotropic conductor film due to ink and ink vapor and to eliminate discharge defects in an ink jet print head having a structure in which a head chip and a circuit substrate for driving the head chip are interconnected by an FPC substrate through the anisotropic conductor film, an outer periphery of the interconnecting portion is molded throughout a full range by a sealant so as to cut off the interconnecting portion from external air. The sealant is of an epoxy type, a silicone type or an acrylic type. An epoxy sealant having low viscosity (50 pa·s or below) and high hardness (85 or more: JISA standard) is used for a first layer sealant of the interconnecting portion and a silicone sealant having high viscosity (70 pa·s or more) is used for a second layer sealant to achieve a two-layered molding structure.

REFERENCES:
patent: 5450110 (1995-09-01), Sato et al.
patent: 6335750 (2002-01-01), Horiuchi et al.
patent: 2904629 (1999-03-01), None
patent: 3117340 (2000-10-01), None

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