Film fixing device and image forming apparatus

Abstract

The application provides a film fixing device and an imaging equipment. The film fixing device comprises a fixed support, a film support, a film, a pressure roller, a heating sheet, a retaining member and a supporting member. The film support is assembled on the fixed support. The film is assembled on the fixed support through the film support. The pressure roller is assembled on the fixed support and is in clamping connection with the film. The heating sheet is assembled on the film support and is arranged in the film. The retaining member is assembled on the fixed support. The retaining member comprises a pressure member and an elastic member. The pressure member comprises a first end located at the bottom of the fixed support and connected with the film support and a second end located at the top of the fixed support and detachably connected with the elastic member. The supporting member is assembled on the fixed support. When the second end of the pressure member is connected with the elastic member, the supporting member is in abutment with the pressure member, so that the film and the pressure roller form a nip under the action of the pressure member, the elastic member and the supporting member. The application prevents the axial movement of the film and prolongs the service life of the film.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fixing images, in particular to a thin film fixing device and an imaging equipment. BACKGROUND

[0002] In an imaging equipment, in a proper imaging processing mechanism part such as electrophotographic processing, electrostatic recording processing, magnetic recording processing, etc., as an un-fixed image (toner image) of image information formed on a recording material by a transfer method or a direct method and placed, a fixing device is used to heat and press fix the un-fixed image to the recording material as a permanent fixed image. The fixing device includes a hot roller heating type fixing device and a thin film heating type fixing device. In the related art, the thin film fixing device has uneven force on both ends of the thin film, unstable paper feeding speed, and problems such as paper jamming and wrinkling caused by the thin film moving to one side, and reduced service life of the thin film. SUMMARY

[0003] The present application provides a thin film fixing device and an imaging equipment for prolonging the service life of the thin film.

[0004] The present application provides a thin film fixing device, comprising:

[0005] A fixed support;

[0006] A thin film support assembled to the fixed support;

[0007] A thin film assembled to the fixed support through the thin film support;

[0008] A pressure roller assembled to the fixed support and clamped to the thin film;

[0009] A heating sheet assembled to the thin film support and arranged in the thin film;

[0010] A retaining member assembled to the fixed support; the retaining member includes a pressure member and an elastic member, the pressure member includes oppositely arranged first and second ends, the first end is located at the bottom of the fixed support and connected to the thin film support, and the second end is located at the top of the fixed support and detachably connected to the elastic member; and

[0011] A supporting member assembled to the fixed support, when the second end of the pressure member is connected to the elastic member, the supporting member abuts against the pressure member, so that the thin film and the pressure roller form a nip under the action of the pressure member, the elastic member and the supporting member.

[0012] Optionally, the pressure member includes a retaining state and a releasing state, when the pressure member is in the retaining state, the supporting member abuts against the pressure member; when the pressure member is in the releasing state, the supporting member is separated from the pressure member.

[0013] Optionally, the support member comprises a connecting portion and a supporting portion connected with the connecting portion, the connecting portion is fixed to the fixing support; the supporting portion is in abutment with the pressure member.

[0014] Optionally, an angle between the supporting portion and the connecting portion ranges from 80° to 100°.

[0015] Optionally, the support member further comprises a limiting portion, which is arranged on a side of the supporting portion away from the connecting portion, and the pressure member is limited in the limiting portion.

[0016] Optionally, the film fixing device comprises a resisting member and an operating member connected with the resisting member, the resisting member is movably connected with the support member, when the operating member is counterclockwise rotated, the resisting member is synchronously rotated in the same direction, so that the pressure member is switched from the holding state to the releasing state, to adjust the nip.

[0017] Optionally, the resisting member comprises a resisting main body and a resisting portion protruding from the resisting main body, the resisting portion is arranged on a side of the resisting main body relatively close to the pressure member; when the pressure member is switched from the holding state to the releasing state, the resisting portion keeps in abutment with the pressure member, to support the pressure member to separate from the support member.

[0018] Optionally, the fixing support comprises a support main body and a support base connected with the support main body, the film support and the pressure roller are fixed to the support main body, the first end of the pressure member is movably connected with the support base, and the elastic member is connected between the second end of the pressure member and the support main body.

[0019] Optionally, the film support comprises a flange assembly, which is assembled to the support main body and connected with the pressure member.

[0020] Optionally, the film fixing device further comprises a guide assembly, which is arranged in the film and connected with the film support at both ends, and the film is rotated under the action of the guide assembly.

[0021] The application further provides an imaging device comprising the film fixing device according to any one of the above.

[0022] The film fixing device of this application embodiment, by setting a support member, when the second end of the pressure member is connected to the elastic member, the support member abuts against the pressure member. The film and the pressure roller form a gap under the action of the pressure member, the elastic member and the support member. The support member abuts against the pressure member, and the stability effect of the pressure member and the elastic member is better. It can reduce the pressure difference and tolerance accuracy at both ends of the film, prevent the film from moving in the axial direction, and make the force at both ends of the film uniform. This makes the width of the gap formed between the film and the pressure roller uniform, avoids the problem of paper jams and wrinkles caused by the film shifting to one side during the paper feeding process, delays the film's service life and improves production efficiency. Attached Figure Description

[0023] Figure 1 The diagram shown is a structural schematic of one embodiment of the thin-film fixing device of this application.

[0024] Figure 2 As shown Figure 1 The diagram shows a partial structural schematic of the thin-film fixing device.

[0025] Figure 3 As shown Figure 1 The diagram shows a partial structural schematic of the thin-film fixing device.

[0026] Figure 4 As shown Figure 1 The diagram shows a structural schematic of one state of the thin film fixing device.

[0027] Figure 5 As shown Figure 4 An enlarged view of section A1 of the thin-film fixing device shown.

[0028] Figure 6 As shown Figure 1 The diagram shows another configuration of the thin-film fixing device.

[0029] Figure 7 As shown Figure 6 An enlarged view of section A2 of the thin-film fixing device shown. Detailed Implementation

[0030] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0031] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. "A plurality" or "several" indicates at least two. Unless otherwise stated, terms such as "front," "rear," "lower," and / or "upper" are for ease of description only and are not limited to a location or spatial orientation. Terms such as "comprising" or "including" mean that the element or object preceding "comprising" covers the element or object listed following "comprising" or "including" and its equivalents, and does not exclude other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect.

[0032] The singular forms “a,” “the,” and “the” used in this application specification and appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0033] This application provides a thin-film fixing device, including a fixed bracket, a film holder, a film, a pressure roller, a heating element, a retainer, and a support. The film holder is assembled to the fixed bracket. The film is assembled to the fixed bracket via the film holder. The pressure roller is assembled to the fixed bracket and clamps the film. The heating element is assembled to the film holder and is disposed within the film. The retainer is assembled to the fixed bracket. The retainer includes a pressure element and an elastic element. The pressure element includes a first end and a second end disposed opposite to each other. The first end is located at the bottom of the fixed bracket and connected to the film holder, and the second end is located at the top of the fixed bracket and detachably connected to the elastic element. The support is assembled to the fixed bracket. When the second end of the pressure element is connected to the elastic element, the support abuts against the pressure element, causing the film and the pressure roller to form a gap under the action of the pressure element, the elastic element, and the support.

[0034] The film fixing device of this application embodiment, by setting a support member, when the second end of the pressure member is connected to the elastic member, the support member abuts against the pressure member. The film and the pressure roller form a gap under the action of the pressure member, the elastic member and the support member. The support member abuts against the pressure member, and the stability effect of the pressure member and the elastic member is better. It can reduce the pressure difference and tolerance accuracy at both ends of the film, prevent the film from moving in the axial direction, and make the force at both ends of the film uniform. This makes the width of the gap formed between the film and the pressure roller uniform, avoids the problem of paper jams and wrinkles caused by the film shifting to one side during the paper feeding process, delays the film's service life and improves production efficiency.

[0035] This application provides a thin-film fixing apparatus and an imaging device. The thin-film fixing apparatus and imaging device of this application will be described in detail below with reference to the accompanying drawings. Unless otherwise specified, the features in the following embodiments and implementations can be combined with each other.

[0036] In this application, a fixing device equipped in imaging equipment such as copiers and printers, which heats and pressurizes a toner image onto a recording material for fixing, is described as an example. In imaging equipment, a fixing device is used in appropriate imaging processing units such as electrophotographic processing, electrostatic recording processing, and magnetic recording processing to heat and pressurize an unfixed image (toner image) formed and mounted on a recording material (transfer material sheet, electronic fax copy paper, electrostatic recording paper, film, printing paper, format paper, envelope, etc.) using a transfer method or a direct method, as a permanent fixed image, for fixing onto the recording material. The fixing device can be a hot roller heating fixing device or a thin film heating fixing device. In this application, a thin film heating fixing device will be described.

[0037] Figure 1 The diagram shown is a structural schematic of an embodiment of the thin film fixing device 1 of this application. Figure 2 As shown Figure 1 A partial structural schematic diagram of the thin film fixing device 1 shown. Figure 3 As shown Figure 1 A partial structural schematic diagram of the thin film fixing device 1 shown. Figure 4 As shown Figure 1 The diagram shows a structural schematic of one state of the thin film fixing device 1. Figure 5 As shown Figure 4 An enlarged view of point A1 of the thin film fixing device 1 shown. Figure 6 As shown Figure 1 A schematic diagram of another state of the thin film fixing device 1 shown. Figure 7 As shown Figure 6 An enlarged view of section A2 of the thin-film fixing apparatus 1 shown. (Combined with...) Figures 1 to 7As shown, the film fixing device 1 includes a fixed bracket 11, a film holder 12, a film 13, a pressure roller 14, a retainer 15, a support 16, and a heating element 23. The fixed bracket 11 is used to fix the film holder 12, the pressure roller 14, the retainer 15, and the support 16. The film holder 12 is fixed to the fixed bracket 11 and is used to fix the film 13 and the heating element 23.

[0038] The film support 12 and the pressure roller 14 are both assembled to the fixed support 11. The film 13 is assembled to the fixed support 11 via the film support 12. The pressure roller 14 is clamped and connected to the film 13. The heating element 23 is assembled to the film support 12 and disposed within the film 13. The retaining member 15 includes a pressure member 17 and an elastic member 18. The pressure member 17 and the elastic member 18 are assembled to the fixed support 11. The pressure member 17 includes a first end 171 and a second end 172 disposed opposite to each other. The first end 171 is located at the bottom of the fixed support 11 and connected to the film support 12, and the second end 172 is located at the top of the fixed support 11 and detachably connected to the elastic member 18. In the longitudinal direction of the figures, the top of the fixed support 11 is above the bottom. When the support member 16 is assembled on the fixed bracket 11 and the second end 172 of the pressure member 17 is connected to the elastic member 18, the support member 16 and the pressure member 17 abut against each other, so that the film 13 and the pressure roller 14 form a roller gap 19 under the action of the pressure member 17, the elastic member 18 and the support member 16.

[0039] In the above scheme, the pressure roller 14 of the film fixing device 1 is driven by the drive wheel, and the film 13 rotates under the drive of the drive wheel. The film 13 and the pressure roller 14 form a gap 19 under the action of the pressure member 17 and the elastic member 18. Toner is added into this gap 19, and the heating element 23 heats and melts the toner, fixing it onto the recording material. In this embodiment, the width of the gap 19 is determined by the hardness of the pressure roller 14 and the pressure member 17 and elastic member 18 of the holding member 15. In actual application, the hardness of the pressure roller 14 may fluctuate by + / -3 degrees, but the fluctuation of the hardness of the pressure roller 14 is basically a general fluctuation and will not cause inconsistency at both ends of the gap 19. As for the pressure member 17 and the elastic member 18, due to the manufacturing process of the elastic member 18, the elasticity may have a tolerance variation of 8% to 12% (e.g., 10%). The film 13 and the pressure roller 14 are each provided with a pressure member 17 and an elastic member 18 at both ends. The elastic force of the elastic elements 18 at both ends may be inconsistent, which may cause the width of the roller gap 19 to be larger at the end with greater elastic force of the elastic element 18 and smaller at the end with less elastic force of the elastic element 18. This will result in uneven width at both ends of the roller gap 19, making the paper feeding speed unstable, causing the film 13 to shift to one side, which may lead to paper jams, wrinkles, and reduced film life.

[0040] To address the aforementioned issues, in this embodiment, pressure members 17 and elastic members 18 are provided at both ends of the film 13 and the pressure roller 14. Correspondingly, two support members 16 are provided on the fixed bracket 11 to support the pressure members 17 at both ends. When the second end 172 of the pressure member 17 is connected to the elastic member 18, the support member 16 abuts against the pressure member 17. Under the action of the pressure member 17, elastic member 18, and support member 16, a gap is formed between the film 13 and the pressure roller 14. The support member 16 abuts against the pressure member 17, resulting in better stability of the pressure member 17 and elastic member 18. This reduces the pressure difference and tolerance accuracy at both ends of the film 13, prevents the film 13 from shifting axially, and ensures uniform force at both ends of the film 13. Consequently, the width of the gap 19 formed between the film 13 and the pressure roller 14 is uniform, preventing paper jams and wrinkles caused by the film shifting to one side during paper feeding, thus extending the service life of the film 13 and improving production efficiency.

[0041] exist Figures 1 to 3 In the illustrated embodiment, the fixing bracket 11 includes a bracket body 111 and a bracket base 112 connected to the bracket body 111. The film holder 12 and the pressure roller 14 are fixed to the bracket body 111. The pressure member 17 and the elastic member 18 are respectively fixed to both sides of the bracket body 111. The first end 171 of the pressure member 17 is movably connected to the bracket base 112, and the elastic member 18 is connected between the second end 172 of the pressure member 17 and the bracket base 112. The bracket body 111 serves as the fixing body for fixing the film holder 12 and the pressure roller 14. The bracket base 112 serves as the supporting body, providing bottom support.

[0042] In this embodiment, the pressure member 17 can be a pressure rod. In other embodiments, the pressure member 17 can be other structures, which are not limited in this application. The first end 171 of the pressure member 17 is movably connected to the support base 112, and the second end 172 of the pressure member 17 abuts against the support body 111 under the action of the elastic member 18. In this embodiment, the elastic member 18 can be a spring. In other embodiments, the elastic member 18 can be other elastic structures, which are not limited in this application. The first end 181 of the elastic member 18 is movably connected to the second end 172 of the pressure member 17, and the second end 182 of the elastic member 18 is connected to the support body 111. The extending direction of the elastic member 18 is substantially consistent with the extending direction of the support base 112.

[0043] In some embodiments, the gap 19 between the pressure roller 14 and the film 13 can be adjusted by adjusting the pressure member 17 and the elastic member 18. During this process, the support member 16 provides support. In this embodiment, the pressure member 17 includes a holding state and a releasing state. Figure 4 and Figure 5In the illustrated embodiment, when the pressure member 17 is in the holding state, the support member 16 abuts against the pressure member 17. In this state, the second end 172 of the pressure member 17 is connected to the elastic member 18, and the roller gap 19 between the pressure roller 14 and the film 13 remains unchanged. This reduces the pressure difference and tolerance accuracy at both ends of the film 13, prevents the film 13 from shifting axially, and ensures that the film 13 is subjected to uniform force at both ends. This ensures that the width of the roller gap 19 is uniform at both ends, stabilizes the paper feed speed, and avoids problems such as paper jams, wrinkles, and reduced film life caused by the film 13 shifting to one side.

[0044] If a paper jam occurs during actual application, the holding state of pressure component 17 can be switched to the releasing state. Figure 6 and Figure 7 In the illustrated embodiment, when the pressure member 17 is in the released state, the support member 16 is separated from the pressure member 17. In this state, the second end 172 of the pressure member 17 is connected to the elastic member 18, and the roller gap 19 between the pressure roller 14 and the film 13 is large, which can solve the problem of paper jamming in the roller gap 19.

[0045] exist Figure 3 In the illustrated embodiment, the support member 16 includes a connecting portion 161 and a supporting portion 162 connected to the connecting portion 161. The connecting portion 161 is fixed to the fixed bracket 11. In this embodiment, the connecting portion 161 is fixed to the bracket body 111. When the second end 172 of the pressure member 17 is connected to the elastic member 18, the support member 16 abuts against the pressure member 17. In this embodiment, the support member 16 can be a sheet metal part with high hardness and rigidity. The connecting portion 161 is fixed to the bracket body 111. When the second end 172 of the pressure member 17 is connected to the elastic member 18, the supporting portion 162 supports the pressure member 17 to prevent the pressure member 17 from becoming unstable under the action of the elastic member 18, thus improving the stability of the pressure member 17. Even under the action of the elastic element 18, the pressure element 17 can remain stable, which can reduce the pressure difference and tolerance accuracy at both ends of the film 13, prevent the film 13 from moving axially, make the force at both ends of the film 13 uniform, thereby making the width of the roller gap 19 uniform, stabilizing the paper feeding speed, avoiding problems such as paper jams and wrinkles caused by the film 13 shifting to one side, reducing the film life, extending the film life, and improving production efficiency.

[0046] In some embodiments, the angle between the support portion 162 and the connecting portion 161 ranges from 80° to 100°. In some embodiments, the angle between the support portion 162 and the connecting portion 161 is 80°, 85°, 90°, 95°, or 100°, with 90° being the preferred value. Setting the angle between the support portion 162 and the connecting portion 161 appropriately makes the provided support force more stable, thereby ensuring that even when the pressure member 17 is under the action of the elastic member 18, the pressure member 17 remains stable, making the width of the roller gap 19 uniform. In this embodiment, the connecting portion 161 and the support portion 162 are integrally formed, resulting in a simple structure and low cost.

[0047] In some embodiments, the support member 16 further includes a limiting portion (not shown) disposed on the side of the support member 162 away from the connecting portion 161, and the pressure member 17 is limited within the limiting portion. The limiting portion can prevent the pressure member 17 from being misaligned or offset relative to the support member 162 under the action of the elastic member 18, thus improving stability.

[0048] In some embodiments, the film fixing device 1 includes a stop member 20 and an operating member 21 connected to the stop member 20. The stop member 20 is movably connected to a support member 16. The support member 16 serves to fix the stop member 20. The operating member 21 is operable by the user. The operating member 21 can rotate counterclockwise or clockwise. Figures 3 to 7 In the illustrated embodiment, when the operating member 21 is rotated counterclockwise, it drives the abutment member 20 to rotate synchronously in the same direction (counterclockwise rotation), causing the pressure member 17 to switch from a holding state to a releasing state, thereby adjusting the roller gap 19. The pressure member 17 switches from a holding state (e.g., ...) to a releasing state. Figure 4 and Figure 5 (As shown) Switch to the release state (e.g.) Figure 6 and Figure 7 When the pressure member 17 is separated from the support member 16 by the abutment member 20, the width of the roller gap 19 is increased, thus solving the paper jam problem.

[0049] In some embodiments, when the operating member 21 is rotated clockwise, it drives the abutment member 20 to rotate synchronously in the same direction (clockwise rotation), causing the pressure member 17 to release from the released state (e.g., Figure 6 and Figure 7 (As shown) Switch to hold state (e.g.) Figure 4 and Figure 5 (As shown), to adjust the roller gap 19. Pressure element 17 is released from the released state (as shown). Figure 6 and Figure 7 (As shown) Switch to hold state (e.g.) Figure 4 and Figure 5As shown, the second end 172 of the pressure member 17 remains connected to the first end 181 of the elastic member 18. At this time, the pressure member 17 is supported by the support member 16 and remains connected to the elastic member 18, so that the width of the roller gap 19 remains unchanged. This reduces the pressure difference and tolerance accuracy between the two ends of the film 13, prevents the film 13 from shifting axially, and ensures that the two ends of the film 13 are subjected to uniform force. This ensures that the width of the roller gap 19 is uniform, stabilizes the paper feeding speed, and avoids problems such as paper jams, wrinkles, and reduced film life caused by the film 13 shifting to one side.

[0050] exist Figures 3 to 7 In the illustrated embodiment, the abutment 20 includes an abutment body 201 and an abutment portion 202 protruding from the abutment body 201. The abutment portion 202 is located on the side of the abutment body 201 relatively close to the pressure member 17. The abutment 20 is movably connected to the support member 16, which serves to fix the abutment 20. The pressure member 17 is in a holding state (e.g., Figure 4 and Figure 5 (As shown) Switch to the release state (e.g.) Figure 6 and Figure 7 When (as shown), the blocking part 202 remains in contact with the pressure member 17 to support the separation of the pressure member 17 from the support member 16. In this embodiment, the blocking body 201 and the blocking part 202 are integrally formed, resulting in a simple structure and low cost.

[0051] exist Figure 4 and Figure 5 In the illustrated embodiment, when the pressure member 17 is in the holding state, the abutment portion 202 remains in contact with the pressure member 17. In this embodiment, when the pressure member 17 is in the holding state, it is supported by both the support member 16 and the abutment portion 202. In other embodiments, the abutment portion 202 may not contact the pressure member 17, and the support member 16 plays the primary supporting role.

[0052] exist Figure 6 and Figure 7 In the illustrated embodiment, when the pressure member 17 is in the released state, the operation member 21 rotates counterclockwise, causing the abutment member 20 to rotate. The side wall of the abutment member 20 supports the pressure member 17, thereby separating the pressure member 17 from the support member 16. In this embodiment, the pressure member 17 is in the released state, and the abutment member 20 mainly serves to support the pressure member 17. This allows for adjustment of the width between the roller gaps 19, thus resolving the paper jam problem within the roller gaps 19.

[0053] In this embodiment, the support points of the support member 16 and the support points of the abutment 202 are staggered in the extending direction of the pressure member 17, and the abutment 202 is positioned closer to the first end 171 of the pressure member 17 relative to the support member 16. The first end 171 of the pressure member 17 is a hinged fixed point, and the second end 171 of the pressure member 17 is a movable connection point. The abutment 202 is positioned closer to the hinged fixed point relative to the movable connection point of the pressure member 17. This arrangement allows the operating member 21 to rotate a small angle, thereby moving the movable connection point of the pressure member 17 a large distance, which facilitates the adjustment of the width of the roller gap 19, making the operation simple and labor-saving.

[0054] In some embodiments, the film holder 12 includes a flange assembly 22, assembled to the holder body 111 and connected to the pressure member 17. When the pressure member 17 moves, it can drive the flange assembly 22 to move, thereby moving the film 13 to adjust the roller gap between the film 13 and the pressure roller 14 and solve the paper jam problem. In some embodiments, the film fixing device 1 also includes a guide assembly 24, disposed inside the film 13, with both ends connected to the film holder 12, and the film 13 rotates under the action of the guide assembly 24. This arrangement provides better stability. In this embodiment, the film holder 12 and the pressure roller 14 are fixed to the holder body 111 by the flange assembly 22, and the first end 171 of the pressure member 17 is connected to the flange assembly 22. In this embodiment, a pair of pressure members 17 and elastic members 18 are provided, respectively disposed at both ends of the film holder 12 and the pressure roller 14, and respectively connected by the flange assembly 22, which facilitates adjustment and provides better stability.

[0055] This application also provides an imaging device, including the above-mentioned... Figures 1 to 7 The thin-film fixing apparatus 1 shown in the embodiment. The imaging device uses the above-described... Figures 1 to 7 The film fixing device 1 shown in the embodiment has a pressure member 17 and an elastic member 18 at each end of the film 13 and the pressure roller 14. Correspondingly, two support members 16 are provided on the fixed bracket 11 to support the pressure members 17 at both ends. When the second end 172 of the pressure member 17 is connected to the elastic member 18, the support member 16 abuts against the pressure member 17. Under the action of the pressure member 17, the pressure roller 14 and the film 13 form a gap. The support member 16 abuts against the pressure member 17, which improves the stability of the pressure member 17 and the elastic member 18, reduces the tolerance accuracy, and makes the width of the gap 19 formed between the film 13 and the pressure roller 14 uniform. This avoids paper jams and wrinkles caused by the film shifting to one side during paper feeding, thus improving production efficiency.

[0056] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A thin-film fixing device, characterized in that, include: Fixed bracket; A thin-film support is assembled onto the fixed support; The film is assembled to the fixed bracket via the film support; The pressure roller is assembled on the fixed bracket and connected to the film clamping device; A heating element is assembled on the thin film support and disposed within the thin film; A retainer, assembled to the fixed bracket; the retainer includes a pressure member and an elastic member, the pressure member including a first end and a second end disposed opposite to each other, the first end being located at the bottom of the fixed bracket and connected to the film bracket, and the second end being located at the top of the fixed bracket and detachably connected to the elastic member; and The support member is assembled on the fixed bracket. When the second end of the pressure member is connected to the elastic member, the support member abuts against the pressure member, so that the film and the pressure roller form a roller gap under the action of the pressure member, the elastic member and the support member. The pressure member includes a holding state and a releasing state; the film fixing device includes a stop member and an operating member connected to the stop member. The stop member is movably connected to the support member. When the operating member is rotated counterclockwise, it drives the stop member to rotate synchronously in the same direction, so that the pressure member switches from the holding state to the releasing state to adjust the roller gap.

2. The thin-film fixing apparatus according to claim 1, characterized in that, When the pressure member is in the holding state, the support member abuts against the pressure member; when the pressure member is in the releasing state, the support member separates from the pressure member.

3. The thin-film fixing apparatus according to claim 2, characterized in that, The support member includes a connecting part and a supporting part connected to the connecting part, the connecting part being fixed to the fixed bracket; the supporting part abuts against the pressure member.

4. The thin-film fixing apparatus according to claim 3, characterized in that, The angle between the support and the connecting part is in the range of 80° to 100°.

5. The thin-film fixing apparatus according to claim 3, characterized in that, The support member further includes a limiting portion disposed on the side of the support member away from the connecting portion, and the pressure member is limited within the limiting portion.

6. The thin-film fixing apparatus according to claim 1, characterized in that, The blocking member includes a blocking body and a blocking portion protruding from the blocking body. The blocking portion is located on the side of the blocking body that is relatively close to the pressure member. When the pressure member switches from the holding state to the releasing state, the blocking portion remains in contact with the pressure member to support the separation of the pressure member from the support member.

7. The thin-film fixing apparatus according to claim 2, characterized in that, The fixed support includes a support body and a support base connected to the support body. The film support and the pressure roller are fixed to the support body. The first end of the pressure member is movably connected to the support base. The elastic member is connected between the second end of the pressure member and the support body.

8. The thin-film fixing apparatus according to claim 7, characterized in that, The membrane support includes a flange assembly assembled to the support body and connected to the pressure component; and / or The film fixing device also includes a guide assembly disposed inside the film, with its two ends connected to the film support, and the film rotates under the action of the guide assembly.

9. An imaging device, characterized in that, Includes the thin film fixing device as described in any one of claims 1 to 8.

Images