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公开(公告)号：US09365057B1
公开(公告)日：2016-06-14
申请号：US15049909
申请日：2016-02-22
Applicant: Seiko Instruments Inc.
Inventor： Takumi Seino , Kouhei Miyawaki
Abstract: A printer unit including: a platen roller including a driven gear; a drive source configured to rotate the platen roller about a predetermined axis; a frame, which is configured to rotatably support the platen roller and to which the drive source is assembled; a reduction gear configured to transmit a driving force of the drive source to the driven gear in a decelerated manner; a thermal head to be held in press contact with an outer peripheral surface of the platen roller; a gearbox portion, which is formed on the frame and to which the driven gear and the reduction gear are assembled, the gearbox portion having an opening for assembling the reduction gear; and a gear cover configured to close at least a part of the opening of the gearbox portion, the gearbox portion having a recessed portion recessed in a direction intersecting an axial direction of the predetermined axis, the gear cover including: a hook portion to be engaged with the gearbox portion; and a projecting portion to be fitted to the recessed portion of the gearbox portion.
Abstract translation: 一种打印机单元，包括：压辊，包括从动齿轮; 驱动源，构造成使压纸辊绕预定轴线旋转; 框架，其构造成可旋转地支撑压纸辊并且驱动源组装到该框架上; 减速齿轮，其构造成以减速方式将所述驱动源的驱动力传递到所述从动齿轮; 保持与压辊的外周面压接的热敏头; 齿轮箱部分，其形成在框架上并且从动齿轮和减速齿轮组装在其上，齿轮箱部分具有用于组装减速齿轮的开口; 以及齿轮盖，其构造成关闭所述齿轮箱部的所述开口的至少一部分，所述齿轮箱部具有在与所述规定轴线的轴向交叉的方向上凹陷的凹部，所述齿轮盖包括：钩部， 与齿轮箱部分; 以及与齿轮箱部的凹部嵌合的突出部。
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公开(公告)号：US10994554B2
公开(公告)日：2021-05-04
申请号：US16594981
申请日：2019-10-07
Applicant: Seiko Instruments Inc.
Inventor： Kouhei Miyawaki
Abstract: A thermal printer includes a thermal head configured to perform printing on recording paper; a platen roller, which is arranged at a position opposed to the thermal head, and is configured to convey the recording paper by nipping the recording paper between the thermal head and the platen roller; a head support plate having conductivity, which has the thermal head to be fixed thereto; a frame, which is configured to support the head support plate, and includes a shaft support portion configured to rotatably support the platen roller about an axis; and a conductive member having conductivity, which is provided between a side surface of the shaft support portion and the head support plate.
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公开(公告)号：US12280607B2
公开(公告)日：2025-04-22
申请号：US18338698
申请日：2023-06-21
Applicant: Seiko Instruments Inc.
Inventor： Kouhei Miyawaki
Abstract: A printing unit includes: a platen roller, which extends in an axial direction, and is configured to convey a recording sheet; a thermal head configured to perform printing on the recording sheet through press contact with an outer peripheral surface of the platen roller; a support plate, which is arranged on a side opposite to the platen roller across the thermal head, and is configured to support the thermal head; a frame, which includes a rear plate portion arranged on a side opposite to the platen roller across the support plate, and is configured to support both ends of the support plate in the axial direction; at least one urging member, which is arranged between the rear plate portion and the support plate, and is configured to press the support plate to the platen roller side; and a protruding portion, which is formed on the support plate to protrude from the support plate to the rear plate portion side, and is configured to regulate displacement of a predetermined urging member of the at least one urging member, wherein a recessed portion is formed in a portion of the rear plate portion opposed to the protruding portion in a thickness direction of the support plate.
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