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Patent Agency Ranking
公开(公告)号：EP0226579A4
公开(公告)日：1988-11-16
申请号：EP85903515
申请日：1985-06-20
Applicant: IBM
Inventor： MCELROY ROBERT MARION JR , MCGUIRE THOMAS ALFRED JR , COLE NORMAN FREDERICK , THORNE WILLIAM DUNCAN , PATTERSON WILLIAM ALEXANDER
CPC classification number: B41J1/20
Abstract: A print element band (5) supports a series of print elements (35) via chevron shaped deflectable fingers (33) for printing movement upon impact by hammers of a hammer bank (2). The fingers (33) are formed integrally of the band (5) by symmetrical V-shaped slots (31, 32) which are shaped to reduce undesirable stresses and provide for more accurate finger deflection. The shape of each V-shaped slot (31, 32) is such that the width of each finger (33) is less in regions (41) where it is attached to the rest of the band (5) than in the region (42) of the apex of the finger.
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公开(公告)号：DE3272936D1
公开(公告)日：1986-10-02
申请号：DE3272936
申请日：1982-11-23
Applicant: IBM
Inventor： PATTERSON WILLIAM ALEXANDER , THORNE WILLIAM DUNCAN
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公开(公告)号：DE3668835D1
公开(公告)日：1990-03-15
申请号：DE3668835
申请日：1986-07-28
Applicant: IBM
Abstract: The present invention relates to an assembly of electromagnetic actuators (A, B, C, D, E) for the hammers of an impact printer arranged side by side and extending along a line. Each actuator comprises a first stator part (41) formed with at least one pole piece, a second stator part (42) formed with at least one pole piece and positioned relative to the first stator part so that the pole pieces are spaced apart so as to form a gap therebetween. A single coil (43) is associated with one of the stator parts. Each actuator also includes an armature member (44) formed with a body of non-magnetisable material, at least one armature element of magnetisable material and a hammer head (67). The armature member is supported between the stator parts so that the armature element is located adjacent to the gap. Energisation of the coil causes the generation of a flux which passes across the gap and through the armature element tending to move the armature element into the gap and to cause the hammer head to move into a print position,According to the invention the components of adjacent actuators are complementary in shape so that projecting components (43) of each actuator engage in recessed components (53) of the adjacent actuator whereby the overall length of the assembly along the line is less than the sum of the overall widths of the individual actuators.
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公开(公告)号：HK41490A
公开(公告)日：1990-06-08
申请号：HK41490
申请日：1990-05-31
Applicant: IBM
Abstract: The present invention relates to an assembly of electromagnetic actuators (A, B, C, D, E) for the hammers of an impact printer arranged side by side and extending along a line. Each actuator comprises a first stator part (41) formed with at least one pole piece, a second stator part (42) formed with at least one pole piece and positioned relative to the first stator part so that the pole pieces are spaced apart so as to form a gap therebetween. A single coil (43) is associated with one of the stator parts. Each actuator also includes an armature member (44) formed with a body of non-magnetisable material, at least one armature element of magnetisable material and a hammer head (67). The armature member is supported between the stator parts so that the armature element is located adjacent to the gap. Energisation of the coil causes the generation of a flux which passes across the gap and through the armature element tending to move the armature element into the gap and to cause the hammer head to move into a print position,According to the invention the components of adjacent actuators are complementary in shape so that projecting components (43) of each actuator engage in recessed components (53) of the adjacent actuator whereby the overall length of the assembly along the line is less than the sum of the overall widths of the individual actuators.
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