JPS62150148U

JPS62150148U -

Info

Publication number: JPS62150148U
Application number: JP3793186U
Authority: JP
Priority date: 1986-03-14
Filing date: 1986-03-14
Publication date: 1987-09-22

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図〜第５図はこの考案を具体化したプリン
タの一実施例を示し、第１図は印字可能状態にお
ける側断面図、第２図は印字可能状態における正
断面図、第３図は要部を示す部分分解斜視図、第
４図は平面図、第５図は印字用紙装着可能状態に
おける側断面図、第６図は従来例のプリンタを示
す側断面図である。３…プラテン支持部材、７…プラテン、８…第
１のばね、１３…送りローラ、１４…駆動軸、１
６…印字ヘツド、１７…従動ローラ、３４…欠歯
ギヤ、３５…カム、３６…駆動ギヤ、３９…阻止
部材、４８…ソレノイド、４９…第２のばね、５
０…欠歯部、Ｐ…印字用紙、Ｓ…用紙案内通路。 Figures 1 to 5 show an embodiment of the printer that embodies this invention. Figure 1 is a side sectional view in a printable state, Figure 2 is a front sectional view in a printable state, and Figure 3 is a front sectional view in a printable state. 4 is a plan view, FIG. 5 is a side sectional view in a state where printing paper can be installed, and FIG. 6 is a side sectional view showing a conventional printer. 3... Platen support member, 7... Platen, 8... First spring, 13... Feed roller, 14... Drive shaft, 1
6... Print head, 17... Followed roller, 34... Missing tooth gear, 35... Cam, 36... Drive gear, 39... Blocking member, 48... Solenoid, 49... Second spring, 5
0... Missing tooth portion, P... Print paper, S... Paper guide path.

Claims

【実用新案登録請求の範囲】１用紙案内通路Ｓ上の印字用紙Ｐに印字可能な
印字ヘツド１６と、その印字ヘツド１６に対向して接近離隔可態に
シヤーシ１に配置され、前記印字ヘツド１６に対
向するプラテン７を備えたプラテン支持部材３と
、前記プラテン７が印字ヘツド１６に接近する方
向に前記プラテン支持部材３を付勢するための第
１のばね８と、前記印字ヘツド１６とプラテン７との間の用紙
案内通路Ｓを所定幅に保持する保持手段と、駆動源により回転される駆動ギヤ３６と、前記シヤーシ１に回転可能に支持され、前記駆
動ギヤ３６と噛合される欠歯ギヤ３４と、その欠歯ギヤ３４の回転軸上に欠歯ギヤ３４と
一体回転可能に取着され、前記プラテン支持部材
３の一部が係合可能なカム３５と、前記欠歯ギヤ３４の歯が駆動ギヤ３６に噛合さ
れる方向へ欠歯ギヤ３４を回転付勢するための第
２のばね４９と、前記欠歯ギヤ３４の欠歯部５０が駆動ギヤ３６
に対向して両ギヤ３４，３６間の噛合が解除され
た状態において前記第２のばね４９に抗して欠歯
ギヤ３４の回転を阻止するための阻止部材３９と
、その阻止部材３９に作用して欠歯ギヤ３４の回
転阻止状態を解除するための解除部材４８とを備
え、第２のばね４９の付勢力により欠歯ギヤ３４が
駆動ギヤ３６に噛合することにより、その駆動ギ
ヤ３６の回転によりカム３５が回転されてプラテ
ン支持部材３が用紙案内通路Ｓを広げる方向へ移
動されるように構成したことを特徴とするプリン
タ。２前記保持手段は、前記プラテン支持部材３に
支持された印字用紙送りローラ１３と、この印字
用紙送りローラ１３と対向配置され従動ローラ１
７とからなることを特徴とする実用新案登録請求
の範囲第１項に記載のプリンタ。[Claims for Utility Model Registration] 1. A print head 16 capable of printing on printing paper P on a paper guide path S, and a print head 16 which is arranged in the chassis 1 so as to be able to approach and separate from the print head 16, and a first spring 8 for biasing the platen support member 3 in a direction in which the platen 7 approaches the print head 16; 7, a drive gear 36 rotated by a drive source, and a missing tooth rotatably supported by the chassis 1 and meshed with the drive gear 36. a gear 34; a cam 35 that is mounted on the rotation axis of the partially toothed gear 34 so as to be rotatable together with the partially toothed gear 34 and is engageable with a portion of the platen support member 3; a second spring 49 for rotationally biasing the partially toothed gear 34 in a direction in which the teeth mesh with the drive gear 36 ;
a blocking member 39 for blocking the rotation of the partially toothed gear 34 against the second spring 49 in a state where the meshing between the gears 34 and 36 is released, and acting on the blocking member 39. and a release member 48 for releasing the rotation prevention state of the partially toothed gear 34, and when the partially toothed gear 34 meshes with the drive gear 36 due to the biasing force of the second spring 49, the drive gear 36 is A printer characterized in that the cam 35 is rotated by rotation, and the platen support member 3 is moved in a direction to widen the paper guide path S. 2 The holding means includes a printing paper feed roller 13 supported by the platen support member 3, and a driven roller 1 disposed opposite to this printing paper feeding roller 13.
7. The printer according to claim 1 of the utility model registration claim.