CN2538544Y

CN2538544Y - Electrostatic Transfer Mechanism for Media Data Recorder

Info

Publication number: CN2538544Y
Application number: CN 02234078
Authority: CN
Inventors: 吴清福; 范冠生
Original assignee: XULI CO Ltd
Priority date: 2002-05-24
Filing date: 2002-05-24
Publication date: 2003-03-05
Anticipated expiration: 2012-05-24

Abstract

An electrostatic transmission mechanism is applied to media data recorders such as printers, fax machines, scanners, etc. to transmit paper. The utility model has an electrostatic field generator installed in a roller for transmitting paper, comprising: a power source having a positive electrode and a negative electrode; and at least two pairs of wires, which are staggered and covered on the surface of the roller and are electrically connected to the positive electrode and the negative electrode of the power source respectively. The electrostatic field generator makes the surface of the roller have static electricity, which can absorb paper, thereby achieving the purpose of smooth transmission, effectively eliminating the shortcomings of traditional roller pressing, star wheel transmission, etc., which leave wrinkles or tooth marks, greatly reducing costs, and improving printing quality.

Description

The static connecting gear of media article logger

Technical field

The utility model relates to a kind of connecting gear that is applied to printer, draught machine, scanner, multifunction machine media article loggers such as (MFP, Copier), refers to a kind of connecting gear that utilizes static to transmit paper especially.

Background technology

The media article logger is to use quite general device at present, be used for media article is printed on the paper, or the media article on the paper is changed into numerical data to be preserved, and includes printer (Inkjet, Laser, Impact Printer), draught machine (Plotter), scanner (Scanner), multifunction machine (MFP, Copier) or the like.And wherein they common a bit be exactly all to need connecting gear to transmit paper, no matter be at paper feed (paper feed), printing (scanning) platform (middle frame) and move back aspect such as paper.

And media article loggers such as present employed printer, no matter be paper feed, print and move back paper etc., all need utilize roller (feed roller), smoother (deflator) and starlike wheel mechanisms such as (starwheel) to transmit paper, make paper (media) move back paper and all keep formation state in transmission, printing, paper feed, but such load mode but can make the variation that print quality is relative.For instance, utilize two rollers to transmit paper 7, can make it present fold state (seeing Figure 1A) and utilize starlike 6 the mechanism of paper that moves back of taking turns, then can make the residual tooth seal of paper, have a strong impact on the quality that paper is printed, shown in Figure 1B.

Simultaneously, when utilizing gear to come transmission, in order to cooperate the size of paper, it is smooth that entire paper is all kept in transport process, and can make entire mechanism become quite big (seeing Fig. 1 C), increases many costs virtually.In addition, the connecting gear on the draught machine is to utilize the air-breathing principle of fan blowing, makes paper be adsorbed in print platform, though do not have fold or tooth seal, can produce sizable noise.

The utility model content

Problem to be solved in the utility model provides a kind of static connecting gear of media article logger, utilizes the suction of generation of static electricity, paper is adsorbed smooth on roller, reaches the purpose that letter quality and paper transmit, turn to.

In order to achieve the above object, the utility model provides a kind of static connecting gear of media article logger, be applied to various media article loggers paper feed, print, move back static dump such as paper and dynamically transmit, an electrostatic field (electrostaticfield) generator that includes a roller and be connected with this roller, the electrostatic field generator acts on roller, make roller surface have static, and can adsorb the paper (media) that will transmit.

In the such scheme, its characteristics are that described electrostatic field generator comprises: a power supply includes an anodal and negative pole; And at least two pairs of leads, be coated in this roller surface interlacedly, and be electrically connected on the positive pole and the negative pole of this power supply respectively.

In the such scheme, its characteristics be described two pairs of leads can be wavy, banded or jagged wire laying mode is coated in this roller surface.

In the such scheme, its characteristics are that described two pairs of leads can perpendicular or parallel mode in this roller major axis connect up, and also can connect up with the mode that this roller major axis has angle.

In the such scheme, its characteristics are also to be provided with an insulating barrier in this outer rim to lead on the described roller.

In the such scheme, its characteristics are that described static connecting gear also includes a roller mount, and this roller portion exposes to this roller mount.

In the such scheme, its characteristics are that described two pairs of leads adopt the wire laying mode of uniline, and design has two conductors to be connected to the two poles of the earth of power supply.

The utility model can utilize the thickness of form kind, density and the insulating barrier of wiring to control the power that electrostatic field produces, make roller produce different electrostatic attractions, reach the purpose that letter quality and paper transmit, turn to, save traditional complicated roller, the starlike design of taking turns, significantly reduce cost.

In order further to understand the purpose of this utility model, structural feature and function thereof, existing conjunction with figs. is described in detail as follows.

Description of drawings

Figure 1A～Fig. 1 C is the schematic diagram of known connecting gear;

Fig. 2 is a schematic diagram of the present utility model;

Fig. 3 A～Fig. 3 C is the schematic diagram of the utility model wire laying mode;

Fig. 4 is applied to the schematic diagram of print platform for the utility model;

Fig. 5 is the schematic diagram of Fig. 4 printhead and paper;

Fig. 6 is applied to move back the schematic diagram of mechanism of paper for the utility model; And

Fig. 7 A, Fig. 7 B and Fig. 8 change the schematic diagram of paper conveyance direction for the utility model.

The specific embodiment

The static connecting gear of media article logger disclosed in the utility model, include the electrostatic field generator that a roller and acts on roller, make roller surface have electrostatic field (electrostatic field), and the paper (media) that the tendency to develop of adsorbable roller institute is sent, and transmit paper by the rotation of roller, the mode that electrostatic field produces has quite a lot of, below only lifts one

Embodiment is illustrated.

As shown in Figure 2, coating (coating or taping) lead 21 is gone up on roller 10 surfaces, is covered with insulating barrier 22 and be coated with on the lead 21 again; Simultaneously, lead 21 comprises lead 21A, the 21B of at least one pair of, shown in Fig. 3 A ~ Fig. 3 C, and it is interlaced and be connected in positive pole, the negative pole (not shown) of a power supply, and the mode of wiring can adopt band shape (band shape) (seeing Fig. 3 A), wavy (wave shape) (seeing Fig. 3 B) or zigzag (saw shape) (seeing Fig. 3 C) or the like, can be designed to vertical or be parallel to the long axis direction of roller 10, or have angle, be exactly to want two groups of lead 21A, 21B interlaced in principle, and can produce electrostatic field in roller 10 surfaces.The power of electrostatic field can be controlled by the thickness of wire laying mode, density and insulating barrier 22, wherein about the design of wire laying mode, except the power that is related to electrostatic field, also according to employed occasion, position, purposes and different.

When being applied to print platform, as shown in Figure 4, has electrostatic field by

roller

11,12, and the generation electrostatic attraction, paper 7 is adsorbed in its surface, relend by

roller

11,12 rotations and transmit paper 7, because of the starlike 6 suitable distances that must as known technology, not retreat to printhead 2 rears (please simultaneously with reference to Fig. 1 C) of taking turns of moving back paper system, so can significantly reduce the consumption of intermediate transfer gear, can make the length of print platform dwindle, and can reduce cost, and reduce to transmit between gear the noise that is produced.Simultaneously,,, make paper 7 more smooth, and the clearance G minimizing (see figure 5) of printhead 2 with paper 7 can be improved the quality of printing (please contrasting Figure 1A simultaneously) so can not produce fold because paper 7 is the transmission that utilize single roller 11 (12).

Identical, when being applied to move back on the mechanism of paper, utilizing roller 12 to have the paper 7 that electrostatic field absorption paper 7 will print and withdraw from, save starlike 6 the pressure effect of taking turns, can be dry as yet because of the data of printing on the paper 7, and produce starlike 6 the impression (please contrasting Fig. 6, Figure 1B simultaneously) of taking turns.

On the other hand, as Fig. 7 A, shown in Fig. 7 B, when the roller 13 that has static, 14 act on the paper 7 and produce pulling force, and the conveying capacity that changes paper 7 to, that is to say, utilize a roller mount 17 (see figure 8)s, coat and fixed idler whell 14, the zone that control roller 14 exposes, when paper 7 is subjected to the electrostatic attraction absorption of roller 14, relend by roller 14 rotations and drive paper 7, when the position A on the paper 7 arrival rollers 14, paper 7 can begin to break away from roller 14, when the B of in-position, paper 7 can pop up because of tension force effect own, during to position C, then can break away from roller 14 fully.

The static connecting gear of media article logger of the present utility model utilizes the electrostatic field generator to make roller have static and can adsorb the paper of required transmission, simultaneously, also has following effect:

1, utilizes the electrostatic attraction principle to make the paper formation of print area (middle frame), and can reduce the gap (gap) of printhead (print head) and paper, improve print quality.

2, reduce the length of print platform, reduce cost.

3, elimination is moved back mechanism of paper because of using the starlike bad phenomenon (starwheel tracking) that makes the residual tooth seal of paper of taking turns, and improves print quality.

4, reduce the use amount of paper advance mechanism part.

5, utilize the electrostatic attraction principle of single roller can make paper conveyance direction change (re-direction), need not use the design of a plurality of roller set, can significantly reduce cost.

6, utilize single circuit and can control the power of electrostatic field (electrostatic field) by different wire laying modes, density and thickness of insulating layer.

The above is preferred embodiment of the present utility model only, is not to be used for limiting practical range of the present utility model; Be that all equalizations of being done according to the utility model patent application change and modification, be all the utility model scope of patent protection and contain.

Claims

1. An electrostatic transmission mechanism of a media data recorder, comprising a roller for conveying paper, characterized in that it also includes an electrostatic field generator connected to the roller.

2. The electrostatic transmission mechanism of the media data recorder according to claim 1, wherein the electrostatic field generator comprises:

a power supply comprising a positive pole and a negative pole; and

At least two pairs of wires cover the surface of the roller alternately and are respectively electrically connected to the positive pole and the negative pole of the power supply.

3. The electrostatic transmission mechanism of a media data recorder as claimed in claim 2, wherein the two pairs of wires can be laid on the surface of the roller in a wave-like, strip-like or zig-zag way.

4. The electrostatic transmission mechanism of the media data recorder according to claim 2 or 3, characterized in that the two pairs of wires can be routed perpendicularly or parallel to the long axis of the roller, or can form an angle with the long axis of the roller way of wiring.

5. The electrostatic transmission mechanism of a media data recorder as claimed in claim 2, wherein an insulating layer is provided on the outer edge of the pair of wires on the roller.

6. The electrostatic transmission mechanism of the media data recorder according to claim 2, 3 or 5, further comprising a roller seat, the roller is fixed on the roller seat and partly exposed from the roller seat.