CN219065985U

CN219065985U - Exposure device and printer

Info

Publication number: CN219065985U
Application number: CN202223603657.6U
Authority: CN
Inventors: 徐鑫炎; 城所孝始
Original assignee: Ningbo Deli Kebei Technology Co Ltd
Current assignee: Ningbo Deli Kebei Technology Co Ltd
Priority date: 2022-12-31
Filing date: 2022-12-31
Publication date: 2023-05-23
Anticipated expiration: 2032-12-31

Abstract

The utility model relates to an exposure device, which comprises a bracket, a first support and a second support, wherein the bracket is arranged on a front cover of a printer; the laser unit is arranged on the bracket; a reflecting mirror provided on the bracket corresponding to the emission direction of the laser unit; the first protective cover is rotationally connected to the bracket through an elastic piece and has a tendency of opening the cover of the reflecting mirror; the trigger piece is arranged close to the first protective cover, and can trigger and drive the first protective cover to overcome the acting force of the elastic piece to cover the reflecting mirror when the front cover is opened. The exposure device can effectively avoid the pollution to the reflecting mirror when the front cover is opened. The utility model also relates to a printer, which comprises a shell, a front cover covered on the front side of the shell, and the exposure device, wherein the bottom plate of the shell is provided with a paper box width adjusting body, and the trigger piece is arranged on the paper box width adjusting body. The printer can ensure the printing image effect for a long time.

Description

Exposure device and printer

Technical Field

The utility model relates to the technical field of printers, in particular to an exposure device and a printer using the exposure device.

Background

A laser printer is a print output device that combines laser scanning technology and electrophotographic technology. The basic working principle is that binary data information transmitted by a computer is converted into image signals through a graphic controller, then the image signals are converted into laser driving signals through a control system, then a laser scanning system generates laser beams carrying character information, finally an electrophotographic system images and transfers the laser beams onto paper, and during the period, carbon powder is attached to a developing roller and a photosensitive drum to realize image generation in cooperation with laser. The laser unit for generating the laser beam is usually disposed in the inside of the cabinet in a horizontal direction, and in addition, since the space in the cabinet is limited, in order to ensure that the laser beam can be irradiated onto the photosensitive drum, a mirror is usually additionally disposed to reflect the laser beam emitted from the laser unit onto the photosensitive drum.

In the printer disclosed in the chinese patent publication No. CN100430833C (200510132349.1), the laser unit is disposed in the housing in a substantially horizontal direction, but this arrangement cannot satisfy the demand for downsizing of the printer.

In addition, the existing reflector has no protective structure, when the front cover of the printer is opened, external dust and pollutants easily pollute the reflector, so that the printed image is affected, and the normal use of the reflector is affected by covering the reflector.

Disclosure of Invention

The first technical problem to be solved by the present utility model is to provide an exposure apparatus for covering a mirror when opening a front cover and opening the mirror when closing the front cover, in view of the above-mentioned prior art.

A second technical problem to be solved by the present utility model is to provide a printer using the exposure apparatus according to the above-mentioned prior art.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: an exposure apparatus, characterized in that: comprising

The bracket is arranged on the front cover of the printer;

the laser unit is arranged on the bracket;

a reflecting mirror provided on the bracket corresponding to the emission direction of the laser unit;

the first protective cover is rotationally connected to the bracket through an elastic piece and has a tendency of opening the cover of the reflecting mirror;

the trigger piece is arranged close to the first protective cover, and can trigger and drive the first protective cover to overcome the acting force of the elastic piece to cover the reflecting mirror when the front cover is opened.

In order to conveniently realize the rotation connection of the first protective cover on the bracket, positioning shafts are respectively arranged at two ends of the bracket corresponding to the installation position of the reflecting mirror, and sleeves matched with the positioning shafts are respectively arranged at two ends of the first protective cover.

Preferably, the elastic piece is a torsion spring, the torsion spring is sleeved on the sleeve, a first through hole for connecting one end of the torsion spring is formed in the support, and a second through hole for connecting the other end of the torsion spring is formed in the first protection cover.

In order to facilitate mutual triggering action of the triggering piece and the first protection cover, the first protection cover is provided with convex ribs which are matched with the triggering piece in an extending mode.

Preferably, the laser unit housing is provided with a second protective cover.

Preferably, the second protective cover is arranged outside the reflector and the first protective cover, the second protective cover is provided with a first opening corresponding to the light emitting direction of the reflector, and the second protective cover is provided with a second opening corresponding to the triggering piece.

In order to realize convenient installation of the second protective cover on the bracket, a positioning column extending towards the direction of the bracket is arranged on the second protective cover, and a jack is arranged on the bracket corresponding to the positioning column;

the second protective cover is provided with an elastic clamping hook extending towards the direction of the bracket, and the bracket is provided with a clamping hole corresponding to the clamping hook.

In order to ensure the reliability of the installation of the reflecting mirror and the stability of the installation angle, the reflecting mirror is arranged below the laser unit, and a supporting plate matched with the inclination angle of the reflecting mirror is arranged on the bracket.

Preferably, the two ends of the bracket corresponding to the supporting plate are also provided with buckles for buckling the reflecting mirror.

The utility model solves the second technical problem by adopting the technical proposal that: a printer, includes casing, covers at the protecgulum of casing front side, its characterized in that: the exposure device is characterized by further comprising the exposure device, wherein the bottom plate of the shell is provided with the paper box width adjusting body, and the trigger piece is arranged on the paper box width adjusting body.

Compared with the prior art, the utility model has the advantages that: according to the exposure device, the laser unit and the reflecting mirror are arranged on the front cover, gaps between the front cover and other parts in the shell are fully utilized, the space for horizontally installing the laser unit and the reflecting mirror in the shell is saved, the arrangement of other parts in the printer is facilitated, and the requirement of miniaturized design can be met. In addition, still additionally set up the first protective cover that is used for carrying out the speculum protection, through the cooperation of elastic component, trigger piece, can be when the protecgulum opens the action, trigger first protective cover and overcome the elasticity of elastic component and cover the speculum, when avoiding the protecgulum to open, dust, the filth pollution speculum in the external environment. The printer applying the exposure device can ensure the image printing effect for a long time based on the protection of the reflecting mirror.

Drawings

Fig. 1 is a perspective view of an exposure apparatus in an embodiment of the present utility model.

Fig. 2 is an internal configuration diagram of an exposure apparatus in an embodiment of the present utility model.

Fig. 3 is an exploded perspective view of an exposure apparatus according to an embodiment of the present utility model.

Fig. 4 is another view of fig. 3.

Fig. 5 is a comparison diagram of the state of opening and closing the front cover in the embodiment of the present utility model.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

As shown in fig. 1 to 5, the exposure device in the present embodiment is provided on the front cover 2 of the printer to make full use of the space inside the printer, facilitating the miniaturization design of the printer. Specifically, the exposure device includes a support 1, a laser unit 3, a reflecting mirror 4, a first protection cover 5, and a trigger member 6, wherein the support 1 is preferably mounted on an inner surface of a front cover 2 of the printer in a detachable connection manner, and the laser unit 3, the reflecting mirror 4, and the first protection cover 5 are mounted on the support 1. The bracket 1 can be connected by adopting various existing detachable structures.

The laser unit 3 is fixed on the bracket 1 through a screw, and a plurality of positioning structures can be additionally arranged for conveniently realizing the positioning of the laser unit on the bracket 1. If the matched positioning pin and the positioning hole are adopted, the mounting position of the laser unit 3 on the bracket 1 is convenient to be consistent. The thickness of the laser unit 3 is limited, and the bracket 1 is also arranged to be a structure body with thinner thickness, so that the laser unit 3 is in a vertical state after being installed on the front cover 2, and the reserved space between the front cover 2 and other parts in the machine shell is fully utilized.

The reflecting mirror 4 is provided on the holder 1 corresponding to the emission direction of the laser unit 3. The inclination angle of the reflecting mirror 4 on the support 1 is adjusted so that the reflecting mirror 4 can reflect the laser light emitted from the laser unit 3 onto the photosensitive drum in the casing. In order to ensure uniformity of the inclination angle of the reflecting mirror 4 on the support 1, in this embodiment, the reflecting mirror 4 is disposed below the laser unit 3, and the support 1 is provided with a support plate 15 matching the inclination angle of the reflecting mirror 4. In addition, the two ends of the bracket 1 corresponding to the supporting plate 15 are also provided with buckles 16 for buckling the reflecting mirror 4. The below of speculum 4 is supported by backup pad 15 like this, and the top is fixed by the buckle 16 joint, has effectively guaranteed reliability and the installation angle's of installing speculum 4 stability.

The first protection cover 5 is rotatably connected to the bracket 1 through the elastic member 51, and based on the elastic member 51, the first protection cover 5 has a tendency of opening to cover the reflecting mirror 4, in this embodiment, under the state that the front cover 2 is closed, the first protection cover 5 cannot contact with the triggering member 6, and then under the action of the elastic member 51, the first protection cover 5 keeps the state of opening the reflecting mirror 4, and the reflecting mirror 4 can normally reflect the laser signal emitted by the laser unit 3 onto the photosensitive drum in the printer housing.

Specifically, the two ends of the bracket 1 corresponding to the installation position of the reflecting mirror 4 are respectively provided with a positioning shaft, and the two ends of the first protection cover 5 are respectively provided with a sleeve 52 matched with the positioning shaft. Through this structure, can effectively guarantee first protective cover 5 pivoted reliability, also conveniently realize the rotation connection of first protective cover 5 on support 1. The elastic piece 51 is a torsion spring, the torsion spring is sleeved on the sleeve 52, the bracket 1 is provided with a first perforation 12 for connecting one end of the torsion spring, and the first protection cover 5 is provided with a second perforation for connecting the other end of the torsion spring. According to need, this torsional spring can only set up in one end, in order to guarantee the reliability that first protective cover 5 opened, can all set up this torsional spring at the both ends of first protective cover 5 to guarantee the equilibrium to first protective cover 5 torsion.

As shown in fig. 5, the triggering element 6 is disposed near the first protection cover 5, and when the front cover 2 is opened, the triggering element 6 triggers and drives the first protection cover 5 to cover the reflecting mirror 4 against the acting force of the elastic element 51. In order to facilitate the mutual triggering action of the triggering piece 6 and the first protection cover 5, the first protection cover 5 is provided with a convex rib 54 which is matched with the triggering piece 6 in an extending way. The trigger 6 in this embodiment only contacts the rib 54 on the first protective cover 5 when the front cover 2 is opened, whereas in the case of a closed front cover 2, the trigger 6 is separated from the rib 54 relatively without any influence. Since the carton width adjusting body 8 is usually disposed in the housing, and the carton width adjusting body 8 is located close to the reflector 4, the trigger piece 6 can be disposed on the carton width adjusting body 8.

In order to protect the laser unit 3, in this embodiment, a second protection cover 7 is provided on the outer cover of the laser unit 3. The second protection cover 7 may be further covered outside the reflecting mirror 4 and the first protection cover 5 to further protect the reflecting mirror 4, and at this time, the second protection cover 7 is provided with a first opening 71 corresponding to the light emitting direction of the reflecting mirror 4, and the light reflected by the reflecting mirror 4 may be irradiated onto the photosensitive drum through the first opening 71. In addition, a second opening 72 is formed in the second protective cover 7 corresponding to the triggering element 6, so that the triggering element 6 can interact with the first protective cover 5. In order to realize convenient installation of the second protective cover 7 on the bracket 1, a positioning column 73 extending towards the direction of the bracket 1 is arranged on the second protective cover 7, and a jack 13 is arranged on the bracket 1 corresponding to the positioning column 73. The second protective cover 7 is provided with an elastic clamping hook 74 extending towards the direction of the bracket 1, and the bracket 1 is provided with a clamping hole 14 corresponding to the clamping hook 74. By means of these structures, a fast positioning and mounting of the second protective cover 7 on the support 1 can be achieved.

According to the exposure device, the laser unit 3 and the reflecting mirror 4 are arranged on the front cover 2, so that gaps between the front cover 2 and other parts in the machine shell are fully utilized, the space for horizontally installing the laser unit 3 and the reflecting mirror 4 in the machine shell is saved, the arrangement of other parts in the printer is facilitated, and the requirement of miniaturization design can be met. In addition, a first protection cover 5 for protecting the reflector 4 is additionally arranged, and through the cooperation of the elastic piece 51 and the triggering piece 6, when the front cover 2 is opened, the first protection cover 5 is triggered to overcome the elastic force of the elastic piece 51 so as to cover the reflector 4, and when the front cover 2 is opened, dust and dirt in the external environment are prevented from polluting the reflector 4. The printer using the exposure device can ensure the image printing effect for a long time based on the protection of the reflecting mirror 4.

The utility model also relates to a printer, which comprises a shell, a front cover 2 covered on the front side of the shell, and the exposure device as described above, wherein the bottom plate of the shell is provided with a paper box width-adjusting body 8, and the trigger piece 6 is arranged on the paper box width-adjusting body 8. The photosensitive drum is arranged in the shell, and laser printing work is realized through the cooperation of the laser unit 3, the reflecting mirror 4 and the photosensitive drum. The printer using the exposure device can enable the whole volume to be smaller, is beneficial to the miniaturization design of the printer, can effectively protect the reflecting mirror 4, and can ensure the image printing effect for a long time.

Claims

1. An exposure apparatus, characterized in that: comprising

The bracket (1) is arranged on the front cover (2) of the printer;

a laser unit (3) arranged on the bracket (1);

a reflecting mirror (4) provided on the bracket (1) in correspondence with the emission direction of the laser unit (3);

the first protective cover (5) is rotatably connected to the bracket (1) through an elastic piece (51) and has a tendency of opening the cover of the reflecting mirror (4);

the trigger piece (6) is arranged close to the first protection cover (5), and the trigger piece (6) can trigger and drive the first protection cover (5) to overcome the acting force of the elastic piece (51) and cover the reflecting mirror (4) when the front cover (2) is opened.

2. The exposure apparatus according to claim 1, wherein: positioning shafts are respectively arranged at two ends of the support (1) corresponding to the installation positions of the reflecting mirrors (4), and sleeves (52) matched with the positioning shafts are respectively arranged at two ends of the first protective cover (5).

3. The exposure apparatus according to claim 2, wherein: the elastic piece (51) is a torsion spring, the torsion spring is sleeved on the sleeve (52), a first through hole (12) for connecting one end of the torsion spring is formed in the support (1), and a second through hole for connecting the other end of the torsion spring is formed in the first protection cover (5).

4. An exposure apparatus according to any one of claims 1 to 3, wherein: the first protection cover (5) is provided with a convex rib (54) matched with the trigger piece (6) in an extending mode.

5. An exposure apparatus according to any one of claims 1 to 3, wherein: the outer cover of the laser unit (3) is provided with a second protective cover (7).

6. The exposure apparatus according to claim 5, wherein: the second protective cover (7) is covered outside the reflector (4) and the first protective cover (5), a first opening (71) is formed in the second protective cover (7) corresponding to the light emitting direction of the reflector (4), and a second opening (72) is formed in the second protective cover (7) corresponding to the triggering piece (6).

7. The exposure apparatus according to claim 5, wherein: a positioning column (73) extending towards the direction of the bracket (1) is arranged on the second protective cover (7), and an inserting hole (13) is formed in the bracket (1) corresponding to the positioning column (73);

the second protective cover (7) is provided with an elastic clamping hook (74) extending towards the direction of the bracket (1), and the bracket (1) is provided with a clamping hole (14) corresponding to the clamping hook (74).

8. An exposure apparatus according to any one of claims 1 to 3, wherein: the reflector (4) is arranged below the laser unit (3), and the support (1) is provided with a support plate (15) matched with the inclination angle of the reflector (4).

9. The exposure apparatus according to claim 8, wherein: the two ends of the bracket (1) corresponding to the supporting plate (15) are also provided with buckles (16) for buckling the reflecting mirror (4).

10. A printer comprising a casing, a front cover (2) covering the front side of the casing, characterized in that: the exposure apparatus according to any one of claims 1 to 9, wherein a paper box width adjusting body (8) is provided on a bottom plate of the housing, and the trigger member (6) is provided on the paper box width adjusting body (8).