Thermal printer with reciprocal paper feed control
    2.
    发明授权
    Thermal printer with reciprocal paper feed control 失效
    热敏打印机具有可互换的进纸控制

    公开(公告)号:US4953994A

    公开(公告)日:1990-09-04

    申请号:US256762

    申请日:1988-10-11

    IPC分类号: B41J15/06 B41J25/316 B41J3/02

    CPC分类号: B41J15/06 B41J25/316

    摘要: A thermal printer comprises a pair of fixed frames for rotatably supporting a platen which is rotated by a motor and a head unit rotatably supported by the fixed frames through a pair of movable frames and for supporting a thermal head. A pair of pinch rollers are rotatably mounted on the fixed frames, which are selectively brought to a first operating state to feed a paper sheet to the region between the platen and the thermal head, and a second operating state to feed no paper sheet. The thermal head is selectively moved between a first position, in which it is pressed against the platen, and a second position in which it is disengaged from the platen. The thermal head is moved to the first position, at the same time the pinch rollers and moved to the second operating state, while the thermal head is moved to the second position, at the same time the pinch rollers are moved to the first operating state.

    Thermal printer with reciprocal paper feed control
    3.
    发明授权
    Thermal printer with reciprocal paper feed control 失效
    热打印机,带有纸张进纸控制

    公开(公告)号:US5062722A

    公开(公告)日:1991-11-05

    申请号:US552405

    申请日:1990-07-12

    CPC分类号: B41J15/06 B41J25/316

    摘要: A thermal printer comprises a pair of fixed frames for rotatably supporting a platen which is rotated by a motor and a head unit rotatably supported by the fixed frames through a pair of movable frames and for supporting a thermal head. A pair of pinch rollers are rotatably mounted on the fixed frames, which are selectively brought to a first operating state to feed a paper sheet to the region between the platen and the thermal head, and a second operating state to feed no paper sheet. The thermal head is selectively moved between a first position, in which it is pressed against the platen, and a second position in which it is disengaged from the platen. The thermal head is moved to the first position, at the same time the pinch rollers and moved to the second operating state, while the thermal head is moved to the second position, at the same time the pinch rollers are moved to the first operating state.

    Thermal printer
    4.
    发明授权
    Thermal printer 失效
    热敏打印机

    公开(公告)号:US4938616A

    公开(公告)日:1990-07-03

    申请号:US256766

    申请日:1988-10-11

    CPC分类号: B41J25/312 B41J17/24

    摘要: A thermal printer comprises a pair of fixed frames for rotatably supporting a platen, a head unit movable relatively to the fixed frames and swingably supporting an elongated thermal head around its intermediate portion, a pair of leaf springs, one end of which resiliently urges the head unit toward the fixed frames so that the thermal head is pressed resiliently against the platen across a paper sheet, and a cam member having cam faces which are selectively engaged with the other end of the leaf spring for changing the urging force of the leaf spring by stages in accordance with the quality of the paper sheet.

    Thermal transfer printer with ribbon tensioning mechanism
    5.
    发明授权
    Thermal transfer printer with ribbon tensioning mechanism 失效
    热转印打印机带色带张紧机构

    公开(公告)号:US4934847A

    公开(公告)日:1990-06-19

    申请号:US256692

    申请日:1988-10-11

    CPC分类号: B41J17/02 B41J17/24

    摘要: A thermal transfer printer comprises a pair of fixed frames for rotatably supporting a platen, a pair of movable frames supporting a thermal head, the movable frames being connected to the fixed frames so as to be rockable around a shaft, between a position where the thermal head is pressed against the platen and a position where the thermal head is moved away from the platen. The ink ribbon is supported by a supply roll and a take-up roll and may be alternately transported in one direction such that the ink ribbon is directed toward the region between the thermal head and the platen or in the direction opposite thereto. The movable frame is provided with operating member adapted to drive the supply roll to move the ink ribbon in the opposite direction, thereby applying a tension of the opposite direction to the ink ribbon, when the movable frame is rocked so that the thermal head is pressed against the platen.

    Apparatus for transporting paper
    6.
    发明授权
    Apparatus for transporting paper 失效
    运送纸的设备

    公开(公告)号:US4982946A

    公开(公告)日:1991-01-08

    申请号:US477479

    申请日:1990-02-09

    IPC分类号: B41J13/02 B65H9/00 B65H9/16

    CPC分类号: B65H9/166

    摘要: An apparatus for transporting paper comprising a paper transport path made up of a reference surface with which one edge portion of paper is brought into abutment and a paper guide on which the surface of the paper is supported, a skew roller supported on a roller shaft, which is arranged at an angle with the transport direction of the paper, and resilently urged toward the paper guide, a skew roller portions control having an abutment surface with which one end portion of the roller shaft is brought into abutment when the skew roller takes a position to be in contact with the paper and a stopper edge with which the periphery of the roller shaft is brought into abutment when the skew roller takes an open position to be away from the paper and being urged toward the skew roller, and a release to move the skew roller position control away from the skew roller, whereby it is made possible to simply bring about a state of the skew roller separated from the paper guide and a state of them held in contact.

    Transfer printer with removable print head
    9.
    发明授权
    Transfer printer with removable print head 失效
    用可拆卸打印头传送打印机

    公开(公告)号:US5106215A

    公开(公告)日:1992-04-21

    申请号:US675982

    申请日:1991-03-26

    IPC分类号: B41J25/304 B41J2/32 B41J29/02

    CPC分类号: B41J29/02

    摘要: A label printer comprises a supporting frame having a pair of side plates facing each other. A platen roller and a head unit having a print head are arranged between the side plates. A supporting shaft extends parallel to the platen roller and has one end fixed to one of the side plates and a free end adjacent to the other side plate. The head unit is supported on the supporting shaft and located in an operative position wherein the print head is opposite to the platen roller. The head unit is slidable from the operative position to the outside of the supporting frame along the supporting shaft. The free end of the shaft and the head unit in the operative position is fixed by a fixing member mounted on the other side plate.

    Transfer printer
    10.
    发明授权
    Transfer printer 失效
    转印打印机

    公开(公告)号:US5174667A

    公开(公告)日:1992-12-29

    申请号:US675984

    申请日:1991-03-26

    IPC分类号: B41J17/02 B41J29/02

    CPC分类号: B41J17/02 B41J29/02

    摘要: A label printer comprises a supporting frame having a pair of side plates facing each other. A print head and a platen roller are arranged between the side plates. Above the print head is arranged a ribbon supply device for running a transfer ribbon between the print head and the platen roller. The ribbon supply device includes a ribbon unit supported on a supporting mechanism, and a ribbon drive section attached to the side plate so as to drive the ribbon unit. The supporting mechanism includes a fixed arm fixed to the side plate, and a slider mounted on the fixed arm. The slider supports the ribbon unit thereon and is slidable between a first position where the ribbon unit engages the ribbon drive section and a second position where the ribbon unit is situated outside the supporting frame.