SU1426847A1 - Apparatus for shaping horizontal dot pattern - Google Patents

Description

(21) 3487302 / 28-12

(22) 08/31/82

(46) 09/30/88. Bul (R 36 (72) N.N.Safonov, G.K.Strekalov, - OT.Khodyrev and A.G.Ryzhevsky (53) 681.6 (088.8) (56) Patent of France No. 2281226, cl. 41 J 3/10, 1976. (54) (57) 1. A DEVICE FOR THE FORMATION OF A HORIZONTAL RASTER, comprising a housing, a support paper cylinder mounted on the base, a printing head and a progressive movement mechanism of the information carrier, characterized in that, in order to improve the speed of printing and reduction of power consumption, the drive shaft passes through the paper supporting cylinder, and the mechanism of a crawl movement has two drum drums decomposition on both sides of the platen cylinder and rigidly attached to the drive shaft, the drive shaft is provided with means for its reciprocating movement of the cylinder relative to the platen and the printhead.

2. An apparatus according to claim 1, characterized in that the means for reciprocating movement of the drive shaft includes a drive eccentric and an intermediate axis cooperating at one end with the eccentric and pivotally connected at the other end with the drive shaft.

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The invention relates to computing and can be used in printing devices for outputting alphanumeric and graphic information as well as in multi-color printing devices; The purpose of the invention is to increase the speed of print Io

: The drawing shows the proposed. Device,

: On the general base 1, stationaryly fixed by brackets 2 (polish cylinder 3 around which: information carrier 4 is transported.) Inside the supporting cylinder 3; in bearings 5 of sliding is located | Plaibodnaya shaft 6; which through the ball bearing 7 is pivotally connected to a serrated axis 8e having the ability i to move reciprocating i together with the shaft 6 in bearings 9; the slip from the driving eccentric:

 KZ 10 "Kolkova B-rabans 11 are rigidly fixed on the shaft 6, which directly engage with the information carrier 4, the gear wheel 12 is rigidly fixed on the same axis, connected with the mechanism 13 for moving the information carrier by line 13 . The information carrier 4: together with the drums 11 and the drive shaft 6, reciprocates with respect to the print head 14 and the ribbon cassette.

The device works as follows.

When the corresponding control signals arrive on the printing elements of the head 14, spot information is applied to the information carrier 4 in the required position, after which the latter moves by a specified step in the direction of the horizontal raster (indicated by arrow A). This movement is carried out by a drive eccentric 10, kinematically connected with the intermediate axis 8 and the shaft 6, on which the spiked drums 11, which directly move the information carrier, are rigidly fixed. The following points are printed and so on until the horizontal line is completely filled. After that, the mechanism 13 of the line-by-line movement of the information carrier by means of a gear wheel 12, made with a tooth large in width, with a crown in order not to interfere with the gears during axial displacement of the wheel 12, rotates the shaft 6 together with the drum peg 1 1 and the carrier 4 information on the line elementary step (indicated by arrow B). Next, the print cycle is repeated,

Unlike the prototype, in which a massive printhead and an unbalance equal in weight move in a reciprocating manner, in the proposed device the printheads are stationary, and the information-transport mechanism being moved by the reciprocating movement has a small weight which is several times less than the printhead weight counterbalance, which allows to move the information carrier relative to the printhead with greater frequency, and consequently, increases the print speed.

S i i 7 S 1 b

Compiled by L.Rusanova. Editor A.Lezhnina Tehred M.Didyk Proofreader S.Shekmar

Order 5978

Circulation 352

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

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Claims (2)

1. DEVICE FOR FORMING A HORIZONTAL RASTER, comprising a housing, a paper support cylinder mounted on the base, a print head and a progressive movement mechanism of the information medium, characterized in that, in order to improve print performance and reduce power consumption, the drive shaft passes through the support cylinder, and the mechanism of horizontal movement has two Kolkovo drums located on both sides of the paper support cylinder and rigidly fixed to the drive shaft, while the drive shaft is supplied with n means for its reciprocating movement relative to the paper support cylinder and the print head. 2. The device according to p. 1, characterized in that the means for reciprocating movement of the drive shaft includes a drive eccentric and an intermediate axis interacting at one end with an eccentric and pivotally connected at the other end to the drive shaft. SU „„ 1426847