Scanner calibration mechanism

Abstract

The present invention belongs to the field of scanner technology, and in particular to a scanner correction mechanism, comprising a light-transmitting plate unit, a top frame and a bottom frame arranged on the upper and lower sides of the light-transmitting plate unit, a first CIS unit and a second CIS unit arranged on opposite side walls of the top frame and the bottom frame, and a first correction plate unit and a second correction plate unit; the first correction plate unit is located directly above the second CIS unit; the first CIS unit is located directly above the second correction plate unit; and also includes a synchronous drive module for driving the first correction plate unit and the second correction plate unit to move horizontally; the light-transmitting plate unit comprises two light-transmitting plate bodies arranged upper and lower, and a paper feeding channel is provided between the two light-transmitting plate bodies; compared with the traditional static linear scanning method, the present invention can realize that the second correction plate unit is the first CIS unit and that the first correction plate unit provides a dynamic scanning area of ​​the surface shape for the second CIS unit, with high precision, lower color deviation influence, and better scanning effect.

Description

Technical Field

[0001] The present invention relates to the technical field of scanners, and in particular to a scanner correction mechanism. Background Art

[0002] A scanner is a device that captures images. As an optical, mechanical and electrical computer peripheral product, the scanner is the third largest computer input device after the mouse and keyboard. It can convert images into digital formats that can be displayed, edited, stored and output by computers. The core component of its image conversion is the contact image sensor (CIS). When scanning an image, the sensor converts the color or black and white grayscale changes of a line in the width direction of the document into electronic signals, and a motor drives the roller to move the document back and forth for scanning.

[0003] Before each scan, the conventional contact image sensor scanning module must first place a piece of white paper with a width approximately equal to the length of the contact image sensor under the sensor for pre-scanning in order to obtain a pure white calibration parameter before scanning the document. However, since the white paper used each time is different, the color of the image will be biased, and the white paper needs to be re-placed for each calibration, which does not conform to the concept of automation, resulting in a reduced user experience and unnecessary trouble. Furthermore, the inaccurate position of the white paper placed by the user each time and the static calibration method will also affect the scanning result, making the calibration result less than ideal. Summary of the invention

[0004] The object of the present invention is to provide a scanner correction mechanism to solve the problems raised in the background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a scanner calibration mechanism, the mechanism comprising a horizontally arranged light-transmitting plate unit, and a top frame and a bottom frame respectively arranged on the upper and lower sides of the light-transmitting plate unit;

[0006] The mechanism further comprises a first CIS unit and a second CIS unit respectively arranged on opposite side walls of the top frame and the bottom frame, and a first correction plate unit and a second correction plate unit respectively arranged on opposite side walls of the top frame and the bottom frame; the first correction plate unit is located directly above the second CIS unit; the first CIS unit is located directly above the second correction plate unit;

[0007] The mechanism also includes a synchronous driving module for driving the first correction plate unit and the second correction plate unit to move horizontally away from each other, so as to realize that the second correction plate unit is the first CIS unit and the first correction plate unit provides a face correction scanning area for the second CIS unit;

[0008] The light-transmitting plate unit comprises two light-transmitting plate bodies arranged in parallel up and down, and a gap between the two light-transmitting plate bodies forms a paper feeding channel for the scanning paper to pass through.

[0009] The scanner correction mechanism described in the present invention, wherein the first CIS unit and the second CIS unit both include a self-focusing lens array arranged along the left-right direction, a photoelectric sensor array corresponding to the light-emitting side of the self-focusing lens array, and a light source body arranged along the left-right direction and horizontally parallel to the self-focusing lens array; the light source body faces the light-transmitting plate body, the light-emitting end of the light source body is inclined toward the self-focusing lens array and the angle between the light source body and the optical axis is an acute angle, and when assembled in place, the two light source bodies are located between the two rows of the self-focusing lens arrays.

[0010] The scanner correction mechanism described in the present invention is characterized in that a longitudinal optical path channel is provided on the light-transmitting plate body corresponding to the self-focusing lens array; two optical path components are respectively provided on the upper and lower sides of the portion of the light-transmitting plate unit located between the two optical path channels, the first CIS unit and the first correction plate unit are connected through the optical path component on the upper side of the light-transmitting plate unit, and the second CIS unit and the second correction plate unit are connected through the optical path component on the lower side of the light-transmitting plate unit; two light outlets are respectively provided on the light source body corresponding to the optical path component and the optical path channel, and the light emitting directions of the two light outlets are perpendicular.

[0011] The scanner correction mechanism described in the present invention, wherein the light source body includes an outer shell, a lamp bead arranged inside the outer shell, and a lens body arranged at the lower end of the outer shell; a window is provided at the lower end of the outer shell corresponding to the lens body, and a V-shaped protrusion extending out of the window is provided at the lower end of the lens body, and two inclined surfaces of the V-shaped protrusion are arranged front and back, and the two inclined surfaces respectively form two light outlets.

[0012] The scanner correction mechanism described in the present invention, wherein the optical path component includes a convex tooth and a color compensation plate, the convex tooth is provided on the side walls of the two light-transmitting plate bodies that are opposite to each other, and the convex tooth is provided with an inclined surface directly opposite to the light source body; the color compensation plate can be removably provided on the adjacent side walls of the two light-transmitting plate bodies, and the side walls of the two color compensation plates that are opposite to each other are both smooth surfaces.

[0013] The scanner correction mechanism described in the present invention, wherein, V-shaped grooves are provided on the side walls of the two light-transmitting plate bodies that are away from each other, the V-shaped grooves are in the shape of long strips and are arranged along the left and right directions, and the V-shaped grooves are located between the color compensation plate and the correction sheet adjacent thereto.

[0014] The scanner correction mechanism described in the present invention, wherein the first correction plate unit and the second correction plate unit both include a horizontally arranged correction plate, and a base for fixing the correction plate; the two bases arranged up and down are respectively connected to the top frame and the bottom frame in a horizontal sliding manner; the synchronous drive module includes two rotating shafts arranged along the left and right directions, and a motor unit for driving the two rotating shafts to rotate synchronously; the same-direction ends of the two rotating shafts both extend out of one end of the bottom frame; the two bases are both located between the two rotating shafts, and the rotating shafts are radially provided with an extension arm for pushing the base to move back and forth horizontally, and the base is provided with a groove corresponding to the extension arm for the extension arm to extend into and swing back and forth.

[0015] The scanner correction mechanism described in the present invention, wherein the motor unit includes a longitudinally arranged L-shaped structural member, a first transmission gear longitudinally arranged on one side of the L-shaped structural member, and a motor body that drives the first transmission gear to rotate; a first swing arm extends horizontally and radially on the first transmission gear, and the first swing arm is provided with a first reset arm extending horizontally toward the L-shaped structural member, and a first movable groove for the first reset arm to extend into is provided on the lateral end of the L-shaped structural member along its length direction, and a second swing arm is radially provided at one end of the two rotating shafts close to the motor unit. When assembled in place, the two second swing arms are respectively abutted against the longitudinal end face and the upper surface of the lateral end of the L-shaped structural member; two reset tension springs are respectively provided on the top frame and the bottom frame corresponding to the two rotating shafts.

[0016] The scanner correction mechanism described in the present invention is characterized in that a second movable groove is provided on the upper surface of the lateral end and the upper end surface of the longitudinal end of the L-shaped structural member, and the second movable groove passes through the L-shaped structural member toward one end of the rotating shaft, and the two second swing arms are respectively provided with second reset arms horizontally extending into the two second movable grooves, and when assembled in place, the two second reset arms are respectively in contact with the inner walls on the same side of the two second movable grooves.

[0017] The scanner calibration mechanism of the present invention, wherein the second swing arm is located on the end surface of the rotating shaft, a vertical plane is provided on a side wall of the lateral end of the L-shaped structural member facing the rotating shaft, and when assembled in place, the second swing arm adjacent to the L-shaped structural member slides and fits with the vertical plane

[0018] Beneficial effects of the present invention: The present invention automatically drives the first correction plate unit and the second correction plate unit to move in opposite directions through a synchronous driving module, so that the first CIS unit and the second CIS unit can scan a certain width area in the front-to-back direction, thereby realizing dynamic scanning of the surface shape. Compared with the traditional static linear scanning method, the scanning area is greatly increased, so the scanning accuracy is higher, the color deviation effect is lower, and the scanning effect is better. In addition, it conforms to the automation design concept, and the first CIS unit and the second CIS unit can be repeatedly corrected for a long time, thereby avoiding the negative impact of the scanning effect caused by the inaccurate positioning caused by the repeated placement of the correction paper manually;

[0019] In addition, the dual correction station design with central symmetrical distribution can further improve the scanning quality, make the correction effect better, closer to the real color, and further reduce the degree of color deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a diagram of the exploded state of the top frame of the present invention.

[0022] Figure 2 This is a diagram of the exploded state of the light-transmitting plate unit, the top frame and the bottom frame of the present invention.

[0023] Figure 3 for Figure 2 A magnified view of the local structure.

[0024] Figure 4 for Figure 3 A partial exploded view of the .

[0025] Figure 5 A longitudinal cross-sectional view of a local structure of the present invention along the front-to-back direction

[0026] Figure 6 for Figure 5 A magnified view of the local structure.

[0027] Figure 7 for Figure 6 A magnified view of the local structure.

[0028] Figure 8 It is a schematic diagram of the optical path of the optical path channel and the optical path components on the upper side of the light-transmitting plate body of the present invention. DETAILED DESCRIPTION

[0029] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the present invention and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0030] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] "Multiple" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0032] Moreover, the terms "upper, lower, left, right, upper end, lower end, longitudinal" and the like indicating directions are all based on the directions shown in the present embodiment.

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be described clearly and completely in combination with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0034] This embodiment discloses Figures 1 to 8 The scanner correction mechanism shown in the figure includes a horizontally arranged light-transmitting plate unit 10, and a top frame 20 and a bottom frame 30 respectively arranged on the upper and lower sides of the light-transmitting plate unit 10; wherein the light-transmitting plate unit 10, the top frame 20 and the bottom frame 30 are all rectangular and are arranged along the left and right sides, and the top frame 20 and the bottom frame 30 are respectively arranged on the bottom body and the upper movable part of the scanner, so as to be conveniently opened for repair and maintenance.

[0035] Furthermore, the present mechanism also includes a first CIS unit 40 and a second CIS unit 50 respectively arranged on opposite side walls of the top frame 20 and the bottom frame 30, and a first correction plate unit 60 and a second correction plate unit 70 respectively arranged on opposite side walls of the top frame 20 and the bottom frame 30; the first correction plate unit 60 is located directly above the second CIS unit 50, and the first CIS unit 40 is located directly above the second correction plate unit 70, so that the first correction plate unit 60 and the second correction plate unit 70 and the first CIS unit 40 and the second CIS unit 50 are all arranged in a centrally symmetrical manner, realizing front and rear double-station correction, which can improve the scanning accuracy and reduce the image noise caused by particle dust, thereby achieving the purpose of improving the scanning fault tolerance rate.

[0036] Furthermore, the present mechanism also includes a synchronous drive module 80 for driving the first correction plate unit 60 and the second correction plate unit 70 to move horizontally away from each other, so as to enable the second correction plate unit 70 to provide a facial correction scanning area for the first CIS unit 40 and to enable the first correction plate unit 60 to provide a facial correction scanning area for the second CIS unit 50. Of course, the synchronous drive mode can also be used to achieve horizontal relative reciprocating movement of the first correction plate unit 60 and the second correction plate unit 70, and the corresponding method can be selected according to different needs; specifically, in the initial state, the vertical center line 601 of the first correction plate unit 60 is located on the rear side of the optical axis 500 of the second CIS unit 50, and the vertical center line 701 of the second correction plate unit 70 is located on the front side of the optical axis 400 of the first CIS unit 40, so that the first correction plate unit 60 and the second correction plate unit 70 can provide sufficient scanning strokes when moving forward and backward respectively, ensuring that the first CIS unit 40 and the second CIS unit 50 can obtain more scanning areas, and then obtain more scanning pixels, thereby improving the scanning quality.

[0037] Among them, the light-transmitting plate unit 10 includes two light-transmitting plate bodies 101 arranged in parallel up and down, and the gap between the two light-transmitting plate bodies 101 forms a paper feeding channel 200 for scanning paper to pass through. The first CIS unit 40 is located on the upper side of the upper light-transmitting plate body 101, and the second CIS unit 50 is located on the lower side of the lower light-transmitting plate body 101.

[0038] The present invention automatically drives the first correction plate unit 60 and the second correction plate unit 70 to move in opposite directions through the synchronous drive module 80, so that the first CIS unit 40 and the second CIS unit 50 can scan a certain width area in the front-back direction, thereby realizing dynamic scanning of the surface shape. Compared with the traditional static linear scanning method, the scanning area is greatly increased, so the scanning accuracy is higher, the color deviation effect is lower, and the scanning effect is better. In addition, the synchronous drive module 80 is provided to realize automatic scanning, which conforms to the automation design concept. At the same time, the first CIS unit 40 and the second CIS unit 50 can be repeatedly corrected for a long time, thereby avoiding the negative impact of the scanning effect caused by the inaccurate positioning caused by the repeated placement of the correction paper manually.

[0039] In addition, the dual correction station design with central symmetrical distribution can further improve the scanning quality, make the correction effect better, closer to the real color, and further reduce the degree of color deviation.

[0040] In this embodiment, the first CIS unit 40 and the second CIS unit 50 both include a self-focusing lens array a1 arranged along the left-right direction, a photoelectric sensor array a2 corresponding to the light-emitting side of the self-focusing lens array a1, and a light source body a3 arranged along the left-right direction and horizontally parallel to the self-focusing lens array a1; specifically, the self-focusing lens array a1, the photoelectric sensor array a2 and the light source body a3 are fixed in position by a fixing seat 90, and the end face of the fixing seat 90 facing the light-transmitting plate body 101 is a horizontal plane 92, and a receiving groove 91 is provided on the end face, and the self-focusing lens array a1, the photoelectric sensor array a2 and the light source body a3 are arranged together in the receiving groove 91. After being assembled in place, the shortest straight-line distance between the upper horizontal plane 92 and the light-transmitting plate body 101 is smaller than the shortest straight-line distance between the first correcting plate unit 60 and the light-transmitting plate body 101. Similarly, the lower horizontal plane 92 and the second correcting plate unit 70 are also arranged in the same manner.

[0041] Furthermore, the self-focusing lens array a1 is composed of a plurality of vertical cylindrical lenses arranged side by side in sequence from left to right, the photoelectric sensor array a2 is composed of a plurality of photoelectric sensors corresponding to the plurality of cylindrical lenses one by one, and the light source adopts an LED light strip. Specifically, the light-emitting end of the light source body a3 faces the light-transmitting plate body 101, and the light-emitting end of the light source body a3 is inclined toward the direction of the self-focusing lens array a1 and the angle with its optical axis is an acute angle. When assembled in place, the two light source bodies a3 are both located between the two columns of the self-focusing lens array, so that the direction of the main light emitted by the front and rear light source bodies a3 is toward the direction away from each other and passes through the two light-transmitting plate bodies to enter the corresponding first correction plate unit 60 and the second correction plate unit 70 and is reflected again to enter the corresponding self-focusing lens columns respectively.

[0042] In this embodiment, a longitudinal optical path channel 1011 is provided on the light-transmitting plate body 101 corresponding to the self-focusing lens array a1. It should be explained that the optical path channel 1011 can be a through hole or the light-transmitting plate body 101 itself. The latter is preferred in this solution. Two optical path components 100 are provided on the upper and lower sides of the portion between the two optical path channels 1011 on the light-transmitting plate unit 10, that is, optical path components 100 are provided on the upper surface of the upper light-transmitting plate body 101 and the lower surface of the lower light-transmitting plate body 101. The first CIS unit 40 and the first correction plate unit 60 realize optical path conduction through the upper optical path component 100, and the second CIS unit 50 and the second correction plate unit 70 realize optical path conduction through the lower optical path component 100. Two light outlets a30 are provided on the light source body a3 corresponding to the optical path component 100 and the optical path channel 1011, and the light outlet directions of the two light outlets a30 are perpendicular.

[0043] The light source body a3 includes a shell a31, a lamp bead a32 arranged inside the shell a31, and a lens body a33 arranged at the lower end of the shell a31; the shell a31 and the lens body a33 are both rectangular structures and are arranged in the left and right horizontal directions to be parallel to the self-focusing lens array a1, and the lamp bead a32 is provided in multiple and evenly arranged on the lamp board inside the shell a31 along the left and right directions, so that each self-focusing lens can evenly receive the same amount of light; the lower end of the shell a31 is opposite to the The lens body a33 is provided with a window, and the lower end of the lens body a33 is provided with a V-shaped protrusion a331 extending out of the window. The two inclined surfaces of the V-shaped protrusion a331 are arranged front and back, so that the two inclined surfaces respectively form two light outlets a30, thereby dividing the light emitted by the lamp bead a32 into two main and secondary parts, so that the main part of the light from the upper first CIS unit 40 enters the corresponding lower optical path channel 1011 and passes through the light-transmitting plate unit 10 to enter the lower second correction plate unit 70 and then reflects upward again. Enter the self-focusing lens array a1 on the upper side, and make the main part of the light of the second CIS unit 50 on the lower side enter the corresponding upper optical path channel 1011 and pass through the transparent plate unit 10 to enter the first correction plate unit 60 on the upper side and then reflect downward again to enter the self-focusing lens array a1 on the lower side, while the minor part of the light of the first CIS unit 40 on the upper side enters the corresponding upper optical path component 100 and enters the first correction plate unit 60 and reflects downward to enter the lower self-focusing lens, while the minor part of the light of the second CIS unit 50 on the lower side enters the corresponding lower optical path component 100 and enters the second correction plate unit 70 and reflects upward to enter the upper self-focusing lens, thereby realizing that the light emitted by the two light source bodies a3 acts on the first correction plate unit 60 and the second correction plate unit 70 at the same time, so that the background system can cross-compare the two sets of data acquired by the two photoelectric sensor arrays a2, so as to improve the data tolerance, ensure the fidelity of the data, and improve the correction accuracy.

[0044] Among them, the optical path component 100 includes a convex tooth 11 and a color compensation plate 12, wherein the convex tooth 11 is integrally arranged with the light-transmitting plate body 101, the convex tooth 11 is in a long strip shape and is arranged along the left and right directions, and in order to ensure that more light enters, a plurality of convex teeth 11 are provided and are closely adjacent to each other and arranged side by side in the front and back directions; further, convex teeth 11 are provided on the opposite side walls of the two light-transmitting plate bodies 101, the upper convex tooth 11 is provided with an inclined surface 110 directly opposite to the upper light source body a3, and the lower convex tooth 11 is provided with an inclined surface 110 directly opposite to the lower light source body a3. Specifically, the longitudinal section of the convex tooth 11 along the front and back directions is triangular; the color compensation plates 12 are removably provided on the adjacent side walls of the two light-transmitting plate bodies 101, and the opposite side walls of the two color compensation plates 12 are It is a smooth surface, so that the secondary part of the light on the upper side enters the smooth surface on the upper side through the inclined surface on the upper side and is reflected and reflected onto the first correction plate unit 60 on the upper side, and then reflected again into the self-focus lens array a1 on the lower side and captured by the photoelectric sensor on the lower side. Similarly, the secondary part of the light on the lower side is captured by the photoelectric sensor on the upper side. The optical path component 100 can not only improve the fault tolerance, fidelity and accuracy of the data, but also filter the incident light through the color compensation plate 12 and reflect the light of the corresponding color, so as to realize the correction of the corresponding color and reduce the degree of color deviation generated during the scanning process. In addition, the detachable setting can facilitate the replacement of color compensation plates 12 of different colors, which greatly improves the adaptability of the scanner.

[0045] In this embodiment, V-shaped grooves 120 are provided on the opposite side walls of the two light-transmitting plate bodies 101, and the V-shaped grooves 120 are long strips and arranged in the left-right direction; specifically, the first correction plate unit 60 and the second correction plate unit 70 each include a horizontally arranged correction piece b1, and a base b2 for fixing the correction piece b1; wherein the V-shaped groove 120 is located between the color compensation plate 12 and the correction piece b1 adjacent thereto, so that more secondary light on the upper side can enter the first correction plate unit 60, and more secondary light on the lower side can enter the second correction plate unit 70; the two bases b2 arranged up and down are horizontally slidably connected to the top frame 20 and the bottom frame 30 respectively; the synchronous drive module 80 includes two rotating shafts 81 arranged in the left-right direction, and a motor unit 82 for driving the two rotating shafts 81 to rotate synchronously; the same-direction ends of the two rotating shafts 81 extend out of one end of the bottom frame 30, and the motor unit 82 is arranged at one end of the rotating shaft 81 extending out of the bottom frame 30; The seats b2 are all located between the two rotating shafts 81. Specifically, the upper base b2 is located between the upper rotating shaft 81 and the upper light-transmitting plate body 101, and the lower base b2 is located between the lower rotating shaft 81 and the lower light-transmitting plate body 101. An extension arm 811 is radially provided on the rotating shaft 81 to push the base b2 to move back and forth horizontally, and a groove b21 is provided on the base b2 corresponding to the extension arm 811 for it to extend into and swing back and forth. When working, the motor unit 82 drives the rotating shaft 81 to rotate around the fixed axis, so that the extension arm 811 swings and then pushes the corresponding base b2 to slide horizontally. Specifically, the upper base b2 translates forward and the lower base b2 translates backward, so that the upper and lower correction sheets b1 pass through the upper and lower self-focus lens arrays a1 respectively, so as to realize dynamic scanning of the surface in the front and rear directions. The correction sheet b1 can be used repeatedly for a long time, and there is no need for the operator to place the correction paper every time correction is performed, which greatly facilitates the user's use.

[0046] In this embodiment, the motor unit 82 includes a longitudinally arranged L-shaped structural member 821, a first transmission gear 822 longitudinally arranged on the side of the L-shaped structural member 821 facing the bottom frame 30, and a motor body 823 driving the first transmission gear 822 to rotate; specifically, the lateral end 8211 of the L-shaped structural member 821 is arranged forward, the first transmission gear 822 is parallel to the longitudinal plane where the L-shaped structural member 821 is located, a first swing arm 8221 is horizontally and radially extended forward on the first transmission gear 822, and a first reset arm 82a extending horizontally toward the L-shaped structural member 821 is provided on the first swing arm 8221, and the first reset arm 82a and the rotating shaft 81 are parallel to each other; further, a first movable groove 82b for the first reset arm 82a to extend into is provided on the right side wall of the lateral end 8211 of the L-shaped structural member 821 along its length direction, and the first movable groove 82b is in the shape of a long strip, and a second swing arm 81a is radially provided on one end of the two rotating shafts 81 close to the motor unit 82, When assembled in place, the two second swing arms 81a respectively abut against the end faces of the longitudinal ends 8212 and the upper surfaces of the transverse ends 8211 of the L-shaped structural member 821; two reset springs 130 are respectively provided on the top frame 20 and the bottom frame 30 corresponding to the two rotating shafts 81, and the reset springs 130 are eccentrically connected to the rotating shaft 81 to provide a rotational reset force for the rotating shaft 81. During operation, the motor body 823 drives the first transmission gear 822 to rotate through the second transmission gear 82c, thereby causing the first reset arm 82a on the first swing arm 8221 to swing up and down, thereby causing the L-shaped structural member 821 to be driven up and down by the first reset arm 82a. During the up and down movement of the L-shaped structural member 821, the rotating shaft 81 is always kept in contact with the L-shaped structural member 821 through the tension of the reset springs 130, thereby realizing the synchronous driving of the two rotating shafts 81 during the up and down movement of the L-shaped structure, thereby realizing the front and back movement of the two correction plates b1, thereby realizing dynamic scanning correction of the face shape along the front and back directions.

[0047] In this embodiment, second movable grooves 82d are provided on the upper surfaces of the transverse end 8211 and the upper end surfaces of the longitudinal end 8212 of the L-shaped structural member 821. The second movable groove 82d passes through the L-shaped structural member 821 at one end facing the rotating shaft 81. The two second swing arms 81a are respectively provided with second reset arms 81a1 horizontally extending into the two second movable grooves 82d. When assembled in place, the two second reset arms 81a1 are respectively fitted with the front inner walls of the two second movable grooves 82d to achieve the positioning of the second reset arms 81a1.

[0048] In this embodiment, the second swing arm 81a is located on the end surface of the rotating shaft 81, and a vertical plane is provided on a side wall of the lateral end 8211 of the L-shaped structural member 821 facing the rotating shaft 81. When assembled in place, the second swing arm 81a adjacent to the L-shaped structural member 821 slides and fits with the vertical plane. Through the limiting cooperation of the first reset arm 82a and the first movable groove 82b and the positioning cooperation of the second swing arm 81a and the second reset arm 81a1, the positioning and guiding of the L-shaped structural member 821 can be achieved, and the stability of the up and down movement of the L-shaped structural member 821 can be ensured. Furthermore, a guiding structure for guiding and limiting the L-shaped structural member 821 can be provided on the bottom frame 30, such as a guide hole for guiding the longitudinal end 8212 of the L-shaped structural member 821.

[0049] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A scanner calibration mechanism, characterized in that: The mechanism comprises a light-transmitting plate unit arranged horizontally, and a top frame and a bottom frame arranged at the upper and lower sides of the light-transmitting plate unit respectively; The mechanism further comprises a first CIS unit and a second CIS unit respectively arranged on opposite side walls of the top frame and the bottom frame, and a first correction plate unit and a second correction plate unit respectively arranged on opposite side walls of the top frame and the bottom frame; the first correction plate unit is located directly above the second CIS unit; the first CIS unit is located directly above the second correction plate unit; The mechanism also includes a synchronous driving module for driving the first correction plate unit and the second correction plate unit to move horizontally away from each other, so as to realize that the second correction plate unit is the first CIS unit and the first correction plate unit provides a face correction scanning area for the second CIS unit; Wherein, the light-transmitting plate unit comprises two light-transmitting plate bodies arranged in parallel up and down, and the gap between the two light-transmitting plate bodies forms a paper feeding channel for the scanning paper to pass through; The first CIS unit and the second CIS unit each include a self-focus lens array arranged along the left-right direction, a photoelectric sensor array corresponding to the light-emitting side of the self-focus lens array, and a light source body arranged along the left-right direction and horizontally parallel to the self-focus lens array; the light source body faces the light-transmitting plate body, the light-emitting end of the light source body is inclined toward the self-focus lens array and the angle between the light source body and the optical axis is an acute angle, and when assembled in place, the two light source bodies are located between the two self-focus lens arrays; A longitudinal optical path channel is provided on the light-transmitting plate body corresponding to the self-focusing lens array; two optical path components are provided on the upper and lower sides of the portion between the two optical path channels on the light-transmitting plate unit, respectively; the first CIS unit and the first correction plate unit are connected through the optical path component on the upper side of the light-transmitting plate unit, and the second CIS unit and the second correction plate unit are connected through the optical path component on the lower side of the light-transmitting plate unit; two light outlets are provided on the light source body corresponding to the optical path component and the optical path channel, respectively, and the light emitting directions of the two light outlets are perpendicular; The light source body comprises a shell, a lamp bead arranged inside the shell, and a lens body arranged at the lower end of the shell; a window is arranged at the lower end of the shell corresponding to the lens body, and a V-shaped protrusion extending out of the window is arranged at the lower end of the lens body, and two inclined surfaces of the V-shaped protrusion are arranged front and back, and the two inclined surfaces respectively form two light outlets; The optical path component includes a convex tooth and a color compensation plate. The convex tooth is provided on the side walls of the two light-transmitting plate bodies that are opposite to each other, and the convex tooth is provided with an inclined surface directly opposite to the light source body; the color compensation plate can be removably provided on the adjacent side walls of the two light-transmitting plate bodies, and the side walls of the two color compensation plates that are opposite to each other are both smooth surfaces.

2. The scanner calibration mechanism according to claim 1, characterized in that: V-shaped grooves are arranged on the opposite side walls of the two light-transmitting plate bodies. The V-shaped grooves are in the shape of long strips and are arranged along the left and right directions. The V-shaped grooves are located on the light-emitting side of the color compensation plate.

3. The scanner calibration mechanism according to claim 1 or 2, characterized in that: The first correction plate unit and the second correction plate unit each include a horizontally arranged correction plate, and a base for fixing the correction plate; the two bases arranged up and down are respectively connected to the top frame and the bottom frame in a horizontal sliding manner; the synchronous drive module includes two rotating shafts arranged along the left and right directions, and a motor unit for driving the two rotating shafts to rotate synchronously; the same-direction ends of the two rotating shafts both extend out of one end of the bottom frame; the two bases are both located between the two rotating shafts, and the rotating shafts are radially provided with an extension arm for pushing the base to move back and forth horizontally, and the base is provided with a groove corresponding to the extension arm for the extension arm to extend into and swing back and forth.

4. The scanner calibration mechanism according to claim 3, characterized in that: The motor unit includes a longitudinally arranged L-shaped structural member, a first transmission gear longitudinally arranged on one side of the L-shaped structural member, and a motor body driving the first transmission gear to rotate; a first swing arm extends horizontally and radially on the first transmission gear, and a first reset arm is provided on the first swing arm and extends horizontally toward the L-shaped structural member. A first movable groove for the first reset arm to extend into is provided on the lateral end of the L-shaped structural member along its length direction, and a second swing arm is radially provided on one end of the two rotating shafts close to the motor unit. When assembled in place, the two second swing arms are respectively abutted against the longitudinal end face and the upper surface of the lateral end of the L-shaped structural member; two reset tension springs are provided on the top frame and the bottom frame respectively corresponding to the two rotating shafts.

5. The scanner calibration mechanism according to claim 4, characterized in that: A second movable groove is provided on the upper end surface of the transverse end and the upper end surface of the longitudinal end of the L-shaped structural member, and the second movable groove passes through the L-shaped structural member toward one end of the rotating shaft. The two second swing arms are respectively provided with second reset arms horizontally extending into the two second movable grooves. When assembled in place, the two second reset arms are respectively in contact with the inner walls on the same side of the two second movable grooves.

6. The scanner calibration mechanism according to claim 4, characterized in that: The second swing arm is located on the end face of the rotating shaft, and a vertical plane is provided on a side wall of the lateral end of the L-shaped structural member facing the rotating shaft. When assembled in place, the second swing arm adjacent to the L-shaped structural member slides and fits with the vertical plane.

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