JPS629544U

JPS629544U -

Info

Publication number: JPS629544U
Application number: JP9927285U
Authority: JP
Priority date: 1985-06-29
Filing date: 1985-06-29
Publication date: 1987-01-21

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例装置の要部の構成を
示す側面図、第２図は従来の印字装置の外観の一
例を示す斜視図、第３図はプラテンローラからベ
イルローラが離脱している状態を示す側面図、第
４図はプラテンローラにベイルローラが圧着して
いる状態を示す側面図、第５図は従来の印字装置
におけるベイルローラおよびフリクシヨンローラ
の離脱機構を示す側面図である。１……プラテンローラ、２……ベイルローラ、
３……リリースレバー、４……フリクシヨンロー
ラ、５……シヤフト、６……ベイルアーム、６ａ
……（Ｐ字形状の）カム溝、６ａ′……（へ字形
状の）カム溝、７……スタツド。 Fig. 1 is a side view showing the configuration of the main parts of an embodiment of the present invention, Fig. 2 is a perspective view showing an example of the external appearance of a conventional printing device, and Fig. 3 shows the bail roller detached from the platen roller. FIG. 4 is a side view showing a state in which the bail roller is pressed against the platen roller, and FIG. 5 is a side view showing a detachment mechanism for the bail roller and friction roller in a conventional printing device. 1...Platen roller, 2...Bail roller,
3... Release lever, 4... Friction roller, 5... Shaft, 6... Bail arm, 6a
...(P-shaped) cam groove, 6a'...(F-shaped) cam groove, 7... Stud.

Claims

[Claims for Utility Model Registration] (1) A platen roller that serves as a backing for paper during printing by a print head, and a friction that can be pressed onto the platen roller via the paper and feeds the paper in a fixed direction. roller, a bail roller that is compressible and retractable to the platen roller through the paper and suppresses floating of the paper from the platen roller after printing, and a bail roller that is associated with the friction roller and the bail roller in the direction of the platen roller. In the printing device, the release lever is movable in at least four stages, and the roller moving means is configured to move in at least four steps, and the roller moving means is configured to move in at least four steps. When the release lever is in the first position, both the friction roller and the bail roller are pressed toward the platen roller, and when the lever is displaced to a second position following the first position, the friction roller is pressed toward the platen roller. When the bail roller is separated from the platen roller while the roller is being pressed in the direction of the platen roller and the lever is displaced to a third position following the second position, both the friction roller and the bail roller are moved toward the platen roller. When the bail roller is separated from the platen roller and the lever is displaced to a fourth position following the third position, the bail roller is pressed in the direction of the platen roller while the friction roller is separated from the platen roller. A printing device characterized by: (2) The roller moving means includes a first arm that is integrally provided with the release lever, is displaced about the first axis, and is provided with a protrusion that protrudes in the angular displacement direction substantially at its tip, and a bail roller. When the bail roller is angularly displaced about the second axis while supporting the first arm, and the protruding portion of the first arm moves along the inner wall due to the displacement of the release lever, the bail roller comes and goes in a predetermined manner in the direction of the platen roller. 2. The printing device according to claim 1, wherein the printing device includes a second arm provided with a cam groove having a F-shaped cam groove.