JPH036951U

JPH036951U -

Info

Publication number: JPH036951U
Application number: JP6595789U
Authority: JP
Priority date: 1989-06-06
Filing date: 1989-06-06
Publication date: 1991-01-23

Description

[Brief explanation of the drawing]

第１図は本考案に係るプリンタの自動紙厚調整
機構の一実施例を示す斜視図であり、第２図は摩
擦クラツチを内蔵したギアの一部断面図であり、
第３図は第２図のギアの分解図であり、第４図は
第１図の機構の拡大側面図であり、第５図はギヤ
ツプとパルスモータの回転との関係を示す図であ
る。１…ヘツド、２…キヤリジ、３…キヤリジ偏心
軸、４…プラテン、５…扇型ギア、６…側板、７
…中間ギア、８…駆動ギア、９…パルスモータ、
１０…ストツパ、１１…大径ギア、１２…小径ギ
ア、１３，１７…ワツシヤ、１４…軸受、１５，
１６…プレート、１８…スプリング、１９…ナツ
ト。 FIG. 1 is a perspective view showing an embodiment of the automatic paper thickness adjustment mechanism of a printer according to the present invention, and FIG. 2 is a partial sectional view of a gear incorporating a friction clutch.
3 is an exploded view of the gear shown in FIG. 2, FIG. 4 is an enlarged side view of the mechanism shown in FIG. 1, and FIG. 5 is a diagram showing the relationship between the gear and the rotation of the pulse motor. 1...head, 2...carriage, 3...carriage eccentric shaft, 4...platen, 5...fan-shaped gear, 6...side plate, 7
…Intermediate gear, 8…Drive gear, 9…Pulse motor,
10... Stopper, 11... Large diameter gear, 12... Small diameter gear, 13, 17... Washer, 14... Bearing, 15,
16...Plate, 18...Spring, 19...Nut.

Claims

[Claims for Utility Model Registration] (1) A mechanism for moving a carriage and a printing head mounted thereon forward and backward by rotating a carriage eccentric shaft using a pulse motor, which moves the printing head forward and is attached to a platen. In a printing device, the pulse motor is configured to maintain a constant distance between the print head and the paper by bringing the print head into contact with a paper of an arbitrary thickness and then retreating a certain distance. An automatic paper thickness adjustment mechanism for a printer, characterized in that a friction clutch is incorporated into a rotation transmission mechanism that transmits data to a carriage eccentric shaft, and a mechanism that can adjust the friction torque of the friction clutch is provided. (2) by providing a stopper for restricting the retreat of the carriage eccentric shaft, and driving the pulse motor even after the carriage eccentric shaft is stopped by the stopper before the printing head is brought into contact with the paper; 2. The printer according to claim 1, wherein the printer is configured to slip the friction clutch to perform a run-in operation of the friction clutch, and then bring the print head into contact with the platen axis direction to improve zero position detection accuracy. Automatic paper thickness adjustment mechanism.