TWI322932B - - Google Patents

Description

1522^52 IV. Designated representative map: () The representative representative map of this case is: second, third, fourth, and fifth diagrams (2) The symbol of the representative figure is briefly described: 1. Laser scanning unit linear scanning lens 2 'rotation Multi-face mirror 2, mirror 3, photosensitive drum set 31, first photosensitive drum 3 2, second photosensitive drum 3 3, third photosensitive drum 3 4, and fourth photosensitive drum 5. If there is a chemical formula, please make the most money* (4) Wei's chemical formula: 6. Invention description: [Technical field of invention] It is only necessary to use single-laser scanning unit and device, and the salty (LSU) can directly affect the production of the first (4) The number of use of the scanning unit of the effect of the color print, the reduction and the reduction of the manufacturing cost and the unit price of the sale. Laser hopper _ and lower ❾ 1322932 [Prior Art] Press 'The most important component in the laser printer is the photosensitive drum (ie, organic image transmission mechanism; referred to as 0 PC), the entire printing process is based on the photosensitive drum The center, and the secrets of the recurrence of the laser, the whole process of laser printing and standing phase can be said to be seven steps of charging, exposure, development, image transfer, fixing, clearing and image removal. As a motion loop: In detail, When the user issues a print command in the application, the prelude of the entire laser printing process is expanded by the "charge" action. • The photoreceptor is filled with a negative or positive charge first, and then the printer is: The image processed by the device (4) rides through the beams to the sense level and forms an "exposure" at the corresponding position, and then the toner will have the same electric charge as the filament, so that the rapidly rotating drum passes the toner. When it is hidden, the exposed part will absorb the charged toner, and “exposure” the image. When the paper enters the machine, it has a positive or negative charge opposite to the toner. Due to the attraction of the opposite sex, So that you can make the drum The toner "turns the image" onto the paper. In order to urge the toner to adhere more closely to the paper, the next heater "fixes" the broken powder on the paper in a high temperature and high pressure manner. The paper printed with t has a higher temperature position, and then the residual carbon on the Chengguang drum is "cleared". The final action is "except image", that is, the static electricity is removed, and the potential of the surface of the photosensitive drum is restored to the initial state. State to expand the next loop action. Furthermore, 'from the above, it can be seen that whether it is a color laser printer or a black and white Thunder printer, it is based on the above-mentioned electronic imaging principle, and there are 3 1322932 different black and white laser printers. It is necessary to print black, so it is only necessary to scan the early elements with a group of lasers (ie I a. Ser scanning uni t » LS TJ ^ - , ,,, ) and early one photosensitive drum (or ga nic ... "C〇ndu ... "ce";〇pc), you can print in the black print', but the color printer needs to be yellow (Ye ii 洋 洋 magenta (Magen ta), f (Cyan), black (B 1 ack) four colors The toner is printed on paper to form a variety of different

The color 'relatively, if the color laser printer uses the laser scanning unit (L SU) for printing, since the photosensitive drum itself cannot distinguish the color, it can only be exposed for one color at a time, so for the column Print-width color picture, 5 laser printers will be _ the above 7 steps are repeated four times, each repetition - time 'can be completed - color printing, if only the black and white file photosensitive drum only need to be adsorbed The black powder can be printed, which is why the color laser printer declares that the color printing speed is only one quarter of the black and white printing speed. In the future, there are related manufacturers who have developed the "one-time imaging" printing technology for color laser printers. In the machine, the four color toner cartridges no longer share a single mine: % unit (LSU) and one sensitive The drum uses four sets of laser sweeps (LSU) and four photosensitive drums (〇PC) to correspond to four carbon 粕·-, so that four sets of laser scanning units can simultaneously feed four photosensitive drums. 'And the four photosensitive drums can also simultaneously adsorb toner from the corresponding toner cartridge' to make the paper print through the γ, Μ, C, B four-color toner cartridges once. This method can improve the printing speed. However, the current color laser printer is designed to meet the convenience of more humanized operation and positional display. Its external change is constantly developing towards small size and weight (4). (4) Parts must also be designed to be precise, ' I t, the right four sets of laser scanning unit (L su) - when stacked in a color laser printer - its four laser scanning units (Lsu) is bound to be occupied in a color laser printer - The space is fixed, so that the volume of the color field can not be small. The design, and the overall external structure will appear cumbersome, the 'relative' also makes the manufacturing cost of the four laser scanning units $ reflect on the unit price of the color laser printer, and its assembly is complicated. Shouting and time 'will increase the cost of the entire experience. Therefore, it is very important to reduce the size of the laser printer while saving the manufacturing and assembly costs and the printing speed. The problem is that the relevant manufacturers engaged in this industry are eager to study the direction of improvement [invention content] Therefore, the inventor has in view of the above problems and lacks, and the search for the information is evaluated and considered by multiple parties. The many years of accumulating in this industry have been the trial and modification of the invention patents that have been designed to produce such a color laser printing method and its device. The main object of the present invention is to enable a set of laser scans by using a motor controller to drive the mirrors to form different reflection angles.

Tian Zaiyu (LS 1322932 ϋ) emits a single or multiple beams to the mirror' and sets the mirror to a corresponding reflection angle depending on the arrangement position of the photosensitive drum. When the motor controller and the laser scanning unit receive signals simultaneously At the same time, the time difference of the beam irradiation can be used to control the position of the reflection angle of the mirror, so that a group of laser scanning units can be used to expose the photosensitive drums at different positions, thereby reducing the use of the laser sensing unit. The number can reduce the manufacturing cost and the unit price of the laser printer as a whole, thereby reducing the overall volume of the laser printer and minimizing the design. [Embodiment] In order to achieve the above object and effect, the technical means and the structure thereof adopted by the present invention, and the characteristics and functions of the present invention are as follows. b Please also refer to the first, second, third, fourth and fifth figures, which is the three-dimensional appearance of the invention? = =1 (action) _ (one), _ -) action does not think (three) and action diagram (four ), by map

Clearly see the method of UF’s secret printing and its U

The printer body (not shown) is provided with a laser scanning unit = laser scanning unit; the P scanning unit 1 is provided with a light source and a rotating multi-faceted scanning lens 1 3 , the light source | ίHelmet# female n Z and linear circuit board η / control circuit board 111 for receiving external signals, and the control circuit board 111 is provided with a laser diode 12 12 'and a light beam of the laser diode l l2 A collimating lens 113 (Co 1 1 ima tor Lens) and a cylindrical mirror 114 (Cy 1 indr i ca 1 Lens) are sequentially disposed in the projection direction, and a photodetector 1 is disposed on the control circuit board 1 1 1 . 1 5, used as a line feed detection ' while the rotating polygon mirror 12 is driven by a motor (not shown) to rotate and reflect the light emitted by the light source device 11 and rotated by the rotating polygon mirror 12 A linear scanning lens 13 (f - 0 lens) is provided in the region of the direction of the projected beam. Furthermore, the path of the single or multiple beams emitted by the laser scanning unit 1 is provided with a mirror 2 that can rotate different reflection angles, and the mirror 2 is driven by the motor controller 2 1 . The reflection angle is set, and a plurality of photosensitive drum groups 3 are arranged on the side of the mirror 2, and the photosensitive drum group 3 can be in four color toner cartridges, namely yellow (Y e 1 1 〇w), magenta (Ma g enta), cyan (Cyan), black (B1 ack) four color systems, and correspondingly provided with the first photosensitive drum 3 1 , the second photosensitive drum 3 2 , the third photosensitive drum 3 3 and the fourth photosensitive drum 3 4, and the above-mentioned photosensitive drums are arranged in an arc shape, so that the mirror 2 can be set to have a corresponding reflection angle according to the arrangement position of the photosensitive drum group 3, that is, four photosensitive drums have four types. The angle of reflection is reflected by the motor controller 21 to store various reflection angles of the mirror 2, and the distances of the beams reflected by each of the photosensitive drums and the mirror 2 are the same. Therefore, in the color laser printing of the present invention, only one set of the laser scanning unit 1 is required to achieve the effect of four-color printing, and the main command is sent after the user issues the printing instruction. The processor of the color laser printer is processed to process the data of the H county into a group of amps and groups that can drive the action of the laser scanning unit 1. The so-called signal group can drive the lightning on the control circuit board 1 1 1 The emitter diode ii 2 strikes the rotating polygon mirror i 2 and then reflects it to the photodetector 1 15 for reception, and synchronizes the start of the photodetector ii 5 to synchronize the motor controller 2 Work so that the angle of reflection of the mirror 2 can be precisely controlled. Thus, if the first photosensitive drum 3 i is to be exposed, only the laser diode 11 1 on the control circuit board 1 1 1 needs to generate light, and then project outward to the collimating lens 1 1 3 and the cylinder. The mirror 1 14 4, and the light beam is focused into a flat beam by the collimator mirror i 3 and the cylindrical mirror 14 , and the beam is projected onto the rotating polygon mirror 12 , and the beam is irradiated as the rotating polygon mirror 丄 2 rotates Linearly scanning the lens 13 and focusing the light beam from the linear scanning lens i 3 to one end of the mirror 2, and sequentially sweeping to the other end, so that the mirror 2 synchronously reflects the light beam to the corresponding first photosensitive drum The exposure is formed on 31 (as shown in the second figure), and then, if the second photosensitive drum 32 is to be exposed, the mirror 2 is only driven by the Marant controller 2 1 so that the reflection angle of the beam can be matched. On the second photosensitive drum 32, since the motor controller 21 has previously set the reflection angle of the mirror 2 to be memorized, if the second photosensitive drum 32 is to be exposed, it is only necessary after the first photosensitive drum 31 is exposed. Within the time difference, to adjust the reflection angle of the mirror 2 to the second photosensitive drum 32, The second photosensitive drum 3 2 is exposed (as shown in the third figure), and so on, if the third and fourth photosensitive drums 1332932 3 3, 3 4 are exposed, it is also performed by the above method (such as the fourth, According to the structural design, when which one of the photosensitive drums is to be exposed, only the motor controller 21 and the laser scanning unit 丨 need to synchronously receive signals, and the motor controller 21 drives the mirror 2 so that It changes the reflection angle and reflects the light beam onto the corresponding photosensitive drum for exposure, and controls the inverse (four) degree position of the mirror 2 by the time difference of the light beam irradiation, thereby forming an exposure to different photosensitive drums.

The color laser printing method of the invention and the straightening method thereof, the rain value requires a (four) laser scanning single M (LSU) to directly expose the photographic administration at different positions for the laser printing function of the color image, It is further possible to apply this structure to the facsimile screen printing machine, thereby reducing the number of uses and reducing the cost of the Laser Women's Army 1 (LSU). Furthermore, 4 continues to refer to the sixth embodiment, which is a schematic view of another preferred embodiment of the present invention. As can be clearly seen from the figure, the above preferred embodiment is a laser set in a laser printer. Scanning unit i (LSU) scans four by mirror 2, and senses the exposure. Relatively, it is also possible to use a laser above the group to be able to feed multiple photosensitive drums through the mirror 2 respectively.仃 Exposure (as shown in Figure 6), which in turn speeds up the printing of color lasers, and such enamel modification and equivalent structural changes should be included in the scope of this patent's patents. The method of the color laser printing of the present invention and its apparatus are in real time, and the defects that can be improved in practice are as follows: 9 (I) Reduction of the number 'The present invention is a only need-group laser scanning single it (LSU:) It is possible to directly expose the photosensitive drums at different positions to achieve the effect of color printing, which in turn can reduce the overall manufacturing cost and sales unit price. (-) The volume is reduced, and the present invention can only produce a laser image of a color image by using a single laser scanning unit "SU", thereby reducing the occupied space in the laser printer and reducing the laser printing. The overall size of the machine, and the laser printing machine can be more refined and beautiful, in order to achieve the purpose of reducing the size and miniaturization design. (2) Reduce the cost and save the group time, the invention can be assembled only A set of laser scanning unit 1 (LSU) is installed, which can solve the complicated assembly process and the lack of time, thereby reducing the cost of production, saving manufacturing costs and reducing inventory problems. The invention is mainly directed to the use of a set of laser scanning units (L s U) and mirrors capable of rotating different reflection angles, so that the mirrors can be set to different reflection angles according to the arrangement positions of the photosensitive drums, and the mirrors are transmitted through the mirrors. The beam emitted by the laser scanning unit can be reflected to the corresponding photosensitive drum, and the position of each line of light is controlled by the start signal of the photodetector 115, thereby controlling the reflection. The position of the reflection angle of the mirror can be used as the main protection focus for the photosensitive drums at different positions. However, the above description is only the preferred embodiment of the present invention, and thus the scope of the patent of the present invention is not limited thereby. The simple modifications and equivalent structural changes of the present specification and the drawings are included in the scope of the patent of the present invention, and are combined with Chen Ming. The color laser printing method and device thereof according to the present invention are used. In the =, in order to achieve its efficacy and purpose, the invention is a practical = excellent invention 'the application requirements of the riding and invention patents, 提出 提出 申 申 % % % % % % % % % 早 早 早 早 早 早 本 本 本 本 本 本If there is any doubt in the Audit Committee of the Right Fishing Bureau, please do not hesitate to indicate that the inventor will try his best to cooperate with him.

BRIEF DESCRIPTION OF THE DRAWINGS The first drawing is a perspective view of a preferred embodiment of the present invention. The second figure is an action forest diagram of a preferred embodiment of the present invention (a second diagram is a schematic diagram of the operation of the preferred embodiment of the present invention (2). The fourth figure is a schematic diagram of the action of the preferred embodiment of the present invention ( The fifth figure is a schematic diagram of the operation of the preferred embodiment of the present invention (4). The figure is a schematic view of another preferred embodiment of the present invention.

[Description of main component symbols] I, laser scanning unit II, light source device 114, cylindrical mirror III, control circuit board 115, photodetector 112, laser diode 12, rotating polygon mirror 113, collimating lens 113, Linear oil-sweeping lens 1322932 2. Mirror 21, motor controller 3, photosensitive drum set 31, first photosensitive drum 3 3, third photosensitive drum 3 2, second photosensitive drum 3 4, fourth photosensitive drum

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Claims (1)

Seven, apply for a patent garden: 1. A method of color f-printing, especially a laser printing method capable of producing a color image by single-shot scanning (LSU), the method of color laser printing To transmit a single or multiple beams by means of a group of laser scanning units (L Su), and a single-mirror field with a different angle of reflection on the path of the beam is driven by a motor (four) to drive the mirror To rotate different reflection angles, and one side of the mirror is provided with a plurality of photosensitive drums (〇PC) arranged in an arc shape, and the mirrors can be set to have corresponding reflection angles according to the arrangement positions of the photosensitive drums. When the mirror is applied to the mirror, the mirror can be reflected to the corresponding level according to different reflection angles (10). When the motor controller and the laser scanning unit simultaneously receive the signal and simultaneously actuate, the time difference of the beam irradiation is used to control the mirror. The position of the reflection angle can be used to form an exposure of the photosensitive drum at different positions; wherein the laser scanning unit has a light source device, a rotating polygon mirror and a linear scanning lens, and the light source device A control circuit board for receiving an external signal is provided, and a single laser diode is arranged on the control circuit board, and a collimating lens and a cylindrical mirror are respectively arranged in the direction of light projection of the laser diode Where the laser diode of the light source emits a single or multiple beams, the beam passes through the collimating lens and the cylindrical mirror and emits the beam to the rotating polygon mirror, and the beam rotates with the rotating polygon mirror Projected to the linear scanning lens (f_1 ens), the linear scanning lens focuses the beam to one end of the mirror and sweeps over to the other end of the mirror. 2. The method of color laser printing according to claim 1, wherein the rotating polygon mirror of the laser scanning unit is rotated by a motor and reflects light emitted by the light source device. 3. The method of color laser printing according to claim 1, wherein the rotating polygon mirror of the laser scanning unit has a linear scanning lens in the region of the direction of the beam of the rotating projection (f 0 lens) ). 4. The method of color laser printing according to claim 1, wherein the reflection angle set by the mirror is stored by a motor controller. 5. The method of color laser printing according to claim 1, wherein each of the photosensitive drums and the mirrors have the same beam distance. 6. A device for printing a color laser, especially a laser printing device that can produce a color image using a single laser scanning unit (LSU), including a laser scanning unit, a single mirror, and a plurality of The photosensitive drum is arranged in an arc shape, wherein: the laser device of the laser scanning unit is configured to transfer the light beam to the polygon mirror and the light beam is projected to the hybrid scanning lens along with the rotation of the rotating polygon mirror (f - β 1 ens), and the linear scanning lens focuses the beam to one end of the mirror and sweeps it to the other end of the mirror; the mirror is located on the beam path emitted by the laser scanning unit and synchronized The light beam emitted by the laser scanning unit is reflected to the lasing level to form an exposure, and the mirror is controlled by the motor (four) to move the mirror to rotate different reflection angles' while the motor controller can scan with the laser (four) steps Receiving a signal while simultaneously operating; and the plurality of photosensitive drums are arranged on one side of the mirror, and the plurality of photosensitive drums are arranged in an arc shape, and the mirrors are arranged according to the arrangement positions of the photosensitive drums There is a corresponding reflection angle. When the beam is incident on the mirror, the mirror can control the position of the reflection angle according to the time difference of the beam illumination, and reflect the beam onto the corresponding photosensitive drum. Forming an exposure; wherein the light source device of the laser scanning unit is provided with a control circuit board capable of receiving an external signal, and the control circuit board is provided with a single laser diode and projected by the light of the laser diode A collimating lens and a cylindrical mirror are respectively arranged in the direction, and after the laser diode provided by the light source device emits a single or multiple beams, the beam passes through the collimating lens and the cylindrical mirror and emits the beam to the rotation. Multi-faceted mirror. The apparatus of the color laser printing according to the sixth aspect of the invention, wherein the rotating polygon mirror of the laser scanning unit rotates by a motor and reflects the light emitted by the light source device. The apparatus for color laser printing according to claim 6, wherein the linear scanning lens (f - Θ 1 ens ) of the laser scanning unit is in a region of a beam direction of a rotating projection mirror. Inside. • A device for color laser printing as described in claim 6 wherein the angle of reflection set by the mirror is stored by the motor controller. The color laser printing device of claim 6, wherein each of the plurality of photosensitive drums is separated from the beam reflected by the mirror by a distance of 1322932.