JPH0362861U

JPH0362861U -

Info

Publication number: JPH0362861U
Application number: JP12464689U
Authority: JP
Priority date: 1989-10-25
Filing date: 1989-10-25
Publication date: 1991-06-19

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例である印字リボンカ
セツトの構成を簡略に示す分解斜視図、第２図は
その側面図、第３図はその印字リボンカセツトが
装着されるタイプライタの印字機構部に設けられ
た固定カム部材を簡略に示す斜視図、第４図はそ
の印字機構部の断面図、第５図及び第６図はその
互いに異なる作動を説明する断面図、第７図はそ
の印字機構部の一部を示す平面図、第８図は上記
タイプライタの制御系を概略的に示すブロツク図
、第９図はその制御系のＲＯＭに記憶されている
制御プログラムのうち、本考案に関連の深い部分
を取出して示すフローチヤートである。４……プラテン、１０……キヤリツジ、１４…
…リボンホルダ、２０……リボンカセツト、２２
……カセツトケース、２４……印字リボン、２６
……消去リボン、３０……リボンリフトカム、３
４……カム溝、４０……従動ピン、５２……ＤＣ
モータ、５８……クラツチカラー、６４……トリ
ガ部材、７０……コレクシヨントリガソレノイド
、７２……カムプレート、７４……回動部材、７
６……スイツチ、８６……スイツチ片、８８……
固定カム部材、９０……傾斜カム面、９２……作
動片、９４……軸、９６……ねじりコイルスプリ
ング、９８……ストツパ。 Fig. 1 is an exploded perspective view schematically showing the configuration of a printing ribbon cassette that is an embodiment of the present invention, Fig. 2 is a side view thereof, and Fig. 3 is a printing mechanism of a typewriter to which the printing ribbon cassette is installed. FIG. 4 is a cross-sectional view of the printing mechanism, FIGS. 5 and 6 are cross-sectional views explaining different operations, and FIG. 7 is a cross-sectional view of the printing mechanism. FIG. 8 is a block diagram schematically showing the control system of the typewriter, and FIG. 9 is a plan view showing a part of the printing mechanism. This is a flowchart that shows the parts deeply related to the above. 4...Platen, 10...Carriage, 14...
... Ribbon holder, 20 ... Ribbon cassette, 22
...Cassette case, 24...Printing ribbon, 26
...Erasing ribbon, 30...Ribbon lift cam, 3
4...Cam groove, 40...Driver pin, 52...DC
Motor, 58... Clutch collar, 64... Trigger member, 70... Collection trigger solenoid, 72... Cam plate, 74... Rotating member, 7
6...Switch, 86...Switch piece, 88...
Fixed cam member, 90... Inclined cam surface, 92... Operating piece, 94... Shaft, 96... Torsion coil spring, 98... Stopper.

Claims

[Claims for Utility Model Registration] A carriage on which a printing head is placed and moves back and forth along a platen, a switching means for detecting the origin position of the carriage, and when the switching means is actuated by the movement of the carriage. A printing ribbon cassette that is detachably mounted on the carriage in a printing device including a control means for setting the origin position of the carriage at a position, the printing ribbon cassette comprising a cassette case for storing the printing ribbon inside the cassette case, and an outside of the cassette case. and an actuating piece protruding from the actuator, and the actuating piece is arranged to detect the home position of the carriage by moving the carriage in the direction of the home position when the power is turned on, thereby activating the switching means. A printed ribbon cassette characterized by: