CN215576101U

CN215576101U - Light source device

Info

Publication number: CN215576101U
Application number: CN202121870108.8U
Authority: CN
Inventors: 刘勇; 解翠英; 吕国杰
Original assignee: Dalian Zhongying Science And Technology Co ltd
Current assignee: Dalian Zhongying Science And Technology Co ltd
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2022-01-18
Anticipated expiration: 2031-08-11

Abstract

The utility model discloses a light source device, which relates to the field of printer light sources and comprises a light source unit, a light control unit and a photosensitive drum, wherein the light source unit and the photosensitive drum are oppositely arranged and are respectively positioned at two sides of the light control unit; the light source unit includes: the light source is fixed on the light source bracket, the light source bracket is arranged in the outer cover, the light control unit is arranged on the outer cover and positioned on one side opposite to the light source, and the light source control panel is arranged on the outer cover and connected with the light source; the light source device also comprises a light guide body, wherein the light guide body is connected with the light control unit and corresponds to the light control unit in a point-to-point mode so as to avoid light rays from diverging; the light source is simplified by controlling the on-off of the light spots on the light path plate, and the cylindrical lens array or the optical fiber array corresponding to the point pair of the light path plate is arranged, so that the divergence of the light rays is solved, and the light rays are not deviated from the initial emission point.

Description

Light source device

Technical Field

The utility model relates to the field of printer light sources, in particular to a light source device applied to printers, copiers, scanners, electronic photography technologies and the like.

Background

Most laser printers in the market generally use a laser composed of a combined lens as a light source, and light emitted by the laser is irradiated on a photosensitive drum of a toner cartridge assembly. The structure of the laser is complicated, the precision of a motor inside the laser is high, the optical performance requirement of the combined lens is strict, the cost of the laser is high, the relative position of the laser and the photosensitive drum has higher requirement, the installation precision requirement of the laser is high, and the problems of light divergence and deviation exist.

SUMMERY OF THE UTILITY MODEL

The utility model provides a light source device for solving the problems of high cost, difficult installation, light divergence, deviation and the like of a light source of a laser printer in the prior art, which simplifies the light source by controlling the on-off of light spots on a light path plate, and solves the light divergence by arranging a columnar lens array or an optical fiber array corresponding to a point pair of the light path plate so that the light does not deviate from an initial emission point.

The technical scheme adopted by the utility model for solving the technical problem is as follows: a light source device comprises a light source unit, a light control unit and a photosensitive drum, wherein the light source unit and the photosensitive drum are arranged oppositely and are respectively positioned on two sides of the light control unit; the light source unit includes: the light source is fixed on the light source bracket, the light source bracket is arranged in the outer cover, the light control unit is arranged on the outer cover and positioned on one side opposite to the light source, and the light source control panel is arranged on the outer cover and connected with the light source; the light source device also comprises a light guide body, wherein the light guide body is connected with the light control unit and corresponds to the light control unit in a point-to-point mode so as to avoid light rays from diverging.

Further, the light control unit comprises a light circuit board and a main control board which are connected.

Further, the light guide body is a cylindrical lens array or an optical fiber array.

Further, the lenticular lens array structure is: one or more rows of lenticular lenses are mounted on the light control unit at regular intervals.

Further, the optical fiber array structure is: one or more rows of optical fibers are installed at a fixed interval on the light control unit.

Furthermore, the light path board is composed of a plurality of light spots arranged in an array matrix, and receives the electric signal output by the main control board to execute the on-off of the light spots.

Has the advantages that: the image to be printed is printed on the photosensitive drum by controlling the on-off of the light spot on the light path plate, so that the light source is simplified; a cylindrical lens array or an optical fiber array corresponding to the point-to-point of the light control unit is arranged to solve the problem of light divergence and prevent the light from deviating from the initial emission point; the structure is simple, the service life is long, the cost is low, the uniformity of the emitted light is good, the attenuation is small, the light path plate light spot multi-row lattice can be made into a curved surface structure, the split structure can be adopted according to actual needs, the manufacturing cost is reduced, the flexibility of the design scheme is increased, and the cost and the manufacturing period are greatly reduced.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the relative positions of the various components of the present invention;

FIG. 3 is a view showing the structure of the installation of the lenticular lens array of the present invention;

FIG. 4 is a block diagram of the fiber array installation of the present invention;

fig. 5 is a view showing a structure of mounting the light source unit and the housing according to the present invention.

Reference numerals: 1. photosensitive drum, 2, light guide body, 3, light control unit, 4, light source, 5, dustcoat, 6, light source support, 7, light source control panel.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "horizontal", "inside", "outside", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or component must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used merely to distinguish one element from another, and are not to be construed as indicating or implying relative importance.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

A light source device includes a light source unit, a light control unit 3, a photosensitive drum 1, a light guide body 2;

the light source unit is arranged opposite to the photosensitive drum 1 and is respectively positioned at two sides of the light control unit 3;

the light control unit 3 comprises a light circuit board and a main control board which are connected;

the light source unit includes: a light source 4, a light source bracket 6, an outer cover 5 and a light source control panel 7,

the light path board is composed of a plurality of light spots arranged in an array matrix, receives the electric signal output by the main control board and executes the on-off of the light spots; the execution of the on-off of the light spot is completed by a driving circuit arranged on the light control unit 3;

the drive circuit includes: the circuit comprises a resistor R1, an optical path switch and a triode Q1, wherein one end of the resistor R1 is grounded, and the other end of the resistor R1 is connected with the optical path switch; one end of the light path switch is grounded, the other end of the light path switch is connected with the joint of the resistor R1 and the triode Q1, the first end of the triode Q1 is connected with the light source control board 7, the second end of the triode Q1 is grounded, and the third end of the triode Q1 is connected with the joint of the resistor R1 and the light path switch;

the light sources 4 are fixed on the light source bracket 6, the light source bracket 6 is arranged in the outer cover 5, the number of the light sources 4 is consistent with that of the light spots, and the light sources are arranged in parallel and correspondingly; preferably, the light source 4 can be light of a specific wavelength, various lights adapted to photosensitive materials, including but not limited to LCD, LED, laser, etc.;

the light control unit 3 is arranged on the outer cover 5 and is positioned at one side opposite to the light source 4, and the light source control panel 7 is arranged on the outer cover 5 and is connected with the light source 4;

the light guide body 2 is connected with the light control unit 3 and corresponds to the point-to-point of the light path board.

Preferably, the light guide 2 is a lenticular lens array or an optical fiber array:

the lenticular lens array structure is: one or more rows of lenticular lenses are mounted on the light control unit 3 at regular intervals.

The optical fiber array structure is as follows: one or more rows of optical fibers are installed at a fixed interval on the light control unit 3.

The distance between the plurality of cylindrical lenses and the optical fiber is as follows: is determined by the resolution of the printer, the preferred value is 1/600 inches, known as 600 DPI. The pitch size is a certain series, and can be preferably set as a multiple of 1/600, and the pitch size is certain, so that the software program can control the pitch size more easily.

The models of the main control board and the light source control board 7 are not specifically limited in this embodiment, and the control boards with the functions of signal conversion, transmission and control can be selected according to the circumstances.

The light emitted by the light source 4 is in a normally open state, the light path board is composed of light spots arranged in an array matrix, and the light spots are in two states of on and off, wherein the light spots are bright when on, the light can pass through, and the light spots are dark when off, and the light is blocked. The cylindrical lens array or the optical fiber array corresponding to the point is arranged behind the light path plate, and the divergence of the light can be solved through the structure, so that the light is not deviated from the initial emission point. The CPU of the printer issues an instruction according to the printing content, the corresponding light spot is switched on and off, the image to be printed is printed on the photosensitive drum 1 by controlling the on and off of the light spot on the light path plate, the image printing is completed, and the light source is simplified.

When in work: the main control board receives the CPU instruction, converts the digital signal of the image to be printed into an electric signal, and outputs the electric signal to the light path board of the light control unit 3, the corresponding light spot on the light path board is in a conducting state, the light passes through the conducting light spot, the rest light spots keep a disconnected state, the disconnected light spot is in a dark state, and the light is blocked at the disconnected light spot. The photo control unit 3 irradiates a digital signal of an image to be printed onto the photosensitive drum 1, and forms a photoelectric image in units of light spots on the photosensitive drum 1.

Preferably, the optical path board can adopt a split structure to correspond to printers with different sizes as required, and can also be made into a curved surface as required.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims

1. A light source device comprises a light source unit, a light control unit (3) and a photosensitive drum (1), wherein the light source unit and the photosensitive drum (1) are arranged oppositely and are respectively positioned at two sides of the light control unit (3); the light source unit includes: the light source control device comprises a light source (4), a light source support (6), an outer cover (5) and a light source control panel (7), wherein the light source (4) is fixed on the light source support (6), the light source support (6) is installed in the outer cover (5), the light control unit (3) is installed on the outer cover (5) and located on one side opposite to the light source (4), and the light source control panel (7) is installed on the outer cover (5) and connected with the light source (4); the light source device is characterized by further comprising a light guide body (2), wherein the light guide body (2) is connected with the light control unit (3) and corresponds to the point-to-point of the light control unit (3) so as to avoid light rays from diverging.

2. A light source device according to claim 1, characterized in that the light control unit (3) comprises a light path board and a main control board connected with each other.

3. A light source device according to claim 2, wherein the light guide (2) is a lenticular lens array or an optical fiber array.

4. The light source device according to claim 3, wherein the lenticular lens array structure is: one or more rows of cylindrical lenses are arranged on the light control unit (3) according to a fixed interval.

5. A light source device according to claim 3, wherein the optical fiber array structure is: one or more rows of optical fibers are installed on the light control unit (3) at a fixed interval.

6. The light source device according to claim 2, wherein the light path board is composed of a plurality of light spots arranged in a matrix array, and receives the electrical signal output by the main control board to perform the switching of the light spots.