JPS61128050U

JPS61128050U -

Info

Publication number: JPS61128050U
Application number: JP1310585U
Authority: JP
Priority date: 1985-01-31
Filing date: 1985-01-31
Publication date: 1986-08-11

Description

[Brief explanation of the drawing]

第１図〜第６図はこの考案の一実施例を説明す
るための図で、第１図が全体構成を示す断面図、
第２図が駆動伝達機構およびペーパベイル進退機
構を示す図、第３図および第４図がペーパベイル
進退機構の一部を示す断面図、第５図がカム形状
を示す図、第６図がカム曲線の特徴を示す図であ
る。また第７図および第８図は従来技術を示す図
で、第７図がカム形状を示す図、第８図がカム曲
線の特徴を示す図である。１……印字装置、２……給排紙口、３……給紙
装置、４……プラテン、１０……ペーパベイル、
１９……給紙台、２２……分離爪、２９Ｒ……給
紙ローラ、３４……排紙ローラ、４３……歯車、
４４……ラチエツト、４６……歯車、４７……ラ
チエツト爪、５０……カム、５１……制御アーム
、５５……レバー、６１……ストツパ、６４……
レバー、７１……プランジヤ、Ｃ……センサ。 Figures 1 to 6 are diagrams for explaining an embodiment of this invention, with Figure 1 being a sectional view showing the overall configuration;
Figure 2 is a diagram showing the drive transmission mechanism and paper bail advancing/retracting mechanism, Figures 3 and 4 are sectional views showing a part of the paper bail advancing/retracting mechanism, Figure 5 is a diagram showing the cam shape, and Figure 6 is the cam curve. FIG. 7 and 8 are diagrams showing the prior art, with FIG. 7 showing the cam shape and FIG. 8 showing the characteristics of the cam curve. 1...Printing device, 2...Paper feeding/discharging port, 3...Paper feeding device, 4...Platen, 10...Paper bail,
19...Paper feed tray, 22...Separation claw, 29R...Paper feed roller, 34...Paper discharge roller, 43...Gear,
44... Ratchet, 46... Gear, 47... Ratchet pawl, 50... Cam, 51... Control arm, 55... Lever, 61... Stopper, 64...
Lever, 71...Plunger, C...Sensor.

Claims

[Scope of utility model registration request]

In a paper feed device of a printing device that presses paper against a platen using a paper bail for printing, the paper feed rotating body receives a driving force from a drive system of the platen and supplies the paper to the platen, and a cam rotates by the driving force. and an arm that transmits a change in the shape of the cam to the paper bail to move the paper bail forward and backward, and the cam shape of the portion where the arm and the cam engage when the drive in the paper feeding direction is interrupted is determined as described above. A paper feeding device characterized by having a shape that does not apply rotational force to a cam.