CN102088535A - Pressure paper roller - Google Patents

Pressure paper roller Download PDF

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Publication number
CN102088535A
CN102088535A CN 201010563853 CN201010563853A CN102088535A CN 102088535 A CN102088535 A CN 102088535A CN 201010563853 CN201010563853 CN 201010563853 CN 201010563853 A CN201010563853 A CN 201010563853A CN 102088535 A CN102088535 A CN 102088535A
Authority
CN
China
Prior art keywords
elastic layer
layer
medium
smooth layer
platen according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN 201010563853
Other languages
Chinese (zh)
Inventor
蒋鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Colortrac Imaging Systems Suzhou Co Ltd
Original Assignee
Colortrac Imaging Systems Suzhou Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Colortrac Imaging Systems Suzhou Co Ltd filed Critical Colortrac Imaging Systems Suzhou Co Ltd
Priority to CN 201010563853 priority Critical patent/CN102088535A/en
Publication of CN102088535A publication Critical patent/CN102088535A/en
Pending legal-status Critical Current

Links

Abstract

The invention relates to a pressure paper roller, comprising a cylindrical roller body, wherein the cylindrical roller body is externally provided with at least two layers in sequence, namely an elastic layer and a smooth layer; the hardness of the elastic layer is less than 45 degrees; the smooth layer is arranged outside the elastic layer; and the frictional factor of the smooth layer is less than 0.40 mu s. When the pressure paper roller disclosed by the invention is contacted with a medium, the pressure paper roller and a medium surface form surface contact; and when a light-emitting diode (LED) lamp lightens the medium, one surface is lightened, thus the distorted scanning images are less. Meanwhile, the elastic layer is externally provided with the smooth layer the frictional factor of which is lower than 0.40 mu s, thus the contact between the roller and the medium is smoother.

Description

A kind of platen
Technical field
The present invention relates to the image scanning technical field, relate in particular to a kind of platen.
Background technology
Along with expanding economy and technology constantly improve, every profession and trade need be converted into large-scale drawing, image electronic document and be used for transmission, work such as preservation, therefore, requirement for scanner is also constantly improving, traditional small scanning instrument can not satisfy the requirement of every profession and trade, for this reason, has occurred 24,42,56 inches large format scanner on the existing market.Wherein, platen compresses scanned medium exactly and makes it be close to glass, illuminates medium with LED then, and last CCD imaging is converted into electronic document with drawing or image.
Existing platen is generally hollow or solid metal cylinder, when compressing medium, because cylinder exterior material hardness is too hard, when contacting with medium, form the some contact, the image that scans can not reduce the image on the drawing well, and because cylinder exterior material hardness is big, it is too big to beat at the rotating process intermediate roll, makes image that the phenomenon of local deformation be arranged.
Summary of the invention
The technical problem to be solved in the present invention is: the platen that a kind of image is not yielding, be used for scanner is provided.
In order to overcome the defective that exists in the background technology, the technical solution adopted for the present invention to solve the technical problems is: a kind of platen, comprise a rotatingcylindrical drum body, and described rotatingcylindrical drum body is outside equipped with two-layerly at least, be in regular turn,
Elastic layer, the hardness of described elastic layer is less than 45 degree;
Be arranged at the outer smooth layer of elastic layer, the coefficient of friction of described smooth layer is lower than 0.40 μ s.
In a preferred embodiment of the present invention, the material that described cylinder body is adopted is the metal of density greater than 2.7 gram/cubic centimetres.
In a preferred embodiment of the present invention, described metal is steel or aluminium or stainless steel or nickel-clad iron.
In a preferred embodiment of the present invention, the employed material of described elastic layer is foaming sponge or the silica gel of hardness less than 45 degree.
In a preferred embodiment of the present invention, the thickness of described elastic layer is 2mm~5mm.
In a preferred embodiment of the present invention, described smooth layer is a resin bed.
In a preferred embodiment of the present invention, the employed material of described resin bed can be ultra-high molecular weight polyethylene or polytetrafluoroethylene or nylon or polyformaldehyde.
In a preferred embodiment of the present invention, be provided with adhesive tape between described rotatingcylindrical drum body and described elastic layer and the described smooth layer.
The invention solves the defective that exists in the background technology, disclosed platen comprises a rotatingcylindrical drum body, and cylinder is originally external with a plurality of layers, is in regular turn: ground floor, and elastic layer, the hardness of described elastic layer is less than 45 degree; The second layer, smooth layer, the coefficient of friction of described smooth layer are lower than 0.40 μ s.Because these external elastic layers of having one deck hardness less than 45 degree of disclosed platen, therefore, its appearance is lower than existing cylinder hardness, when this cylinder contacts with medium, contact with dielectric surface formation face, when the LED lamp illuminates medium, illuminate a face, the image fault that scans is few.Simultaneously, contact more suitable slidingly between cylinder and the medium, elastic layer outside, also have the smooth layer that coefficient of friction is lower than 0.40 μ s in order to make.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of the preferred embodiments of the present invention;
Wherein: 1, cylinder body; 2, elastic layer; 3, smooth layer.
Embodiment
The present invention is further detailed explanation with preferred embodiment in conjunction with the accompanying drawings now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
As shown in Figure 1, the present invention relates to a kind of platen, comprise a rotatingcylindrical drum body 1, in the preferred embodiment of the present invention, the material that cylinder body 1 is adopted is the metal of density greater than 2.7 gram/cubic centimetres, particularly, can be metal materials such as steel, aluminium, stainless steel or nickel-clad iron.If the density of the metal material that is adopted is too small, will cause the quality of cylinder body 1 too small, the pressure when cylinder body 1 contacts with medium is not enough, the image scanning poor effect.
Because traditional cylinder is generally hollow or solid metal cylinder, when compressing medium, because cylinder exterior material hardness is too hard, when contacting with medium, form the some contact, the image that scans can not reduce the image on the drawing well, and because cylinder exterior material hardness is big, it is too big to beat at the rotating process intermediate roll, makes image that the phenomenon of local deformation be arranged.Therefore, in the preferred embodiment of the present invention, cylinder body 1 is outside equipped with the elastic layer 2 of hardness less than 45 degree.Particularly, elastic layer 2 employed materials can be foaming sponge or the silica gel of hardness less than 45 degree.And the thickness of elastic layer 2 is 2mm~5mm.If the thickness of elastic layer 2 is too thin, the elastic effect of elastic layer 2 is not good, when contacting with medium, forms the some contact, and the image that scans can not reduce the image on the drawing well; If the thickness of elastic layer 2 is too thick, when contacting with medium, contact-making surface is inhomogeneous, and can increase cost.
Further, contact more suitable slidingly between cylinder and the medium, elastic layer 2 outside, also have the smooth layer 3 that coefficient of friction is lower than 0.40 μ s in order to make.Particularly, smooth layer 3 employed materials can be resin.
Existing have as follows than the coefficient of friction of the common resins of low-friction coefficient:
Ultra-high molecular weight polyethylene: 0.07 μ s-0.11 μ s;
Polytetrafluoroethylene: 0.04 μ s-0.1 μ s;
Nylon 66:0.15 μ s-0.40 μ s;
Polyformaldehyde: 0.15 μ s-0.35 μ s.
In the preferred embodiment of the present invention, smooth layer 3 can select for use above resin as smooth layer 3 arbitrarily, makes elastic layer 2 have smooth surface, thereby cylinder is smoothly contacted with medium.
In the preferred embodiment of the present invention, can pass through the adhesive tape bonding connection between cylinder body 1, elastic layer 2 and the smooth layer 3, the effect of this connected mode is relatively good.Perhaps, also can connect by the package power of material self, this connected mode is easy and simple to handle, and with low cost.
The invention solves the defective that exists in the background technology, disclosed platen comprises a rotatingcylindrical drum body, and cylinder is originally external with a plurality of layers, is in regular turn: ground floor, and elastic layer, the hardness of described elastic layer is less than 45 degree; The second layer, smooth layer, the coefficient of friction of described smooth layer are lower than 0.40 μ s.Because these external elastic layers of having one deck hardness less than 45 degree of disclosed platen, therefore, its appearance is lower than existing cylinder hardness, when this cylinder contacts with medium, contact with dielectric surface formation face, when the LED lamp illuminates medium, illuminate a face, the image fault that scans is few.Simultaneously, contact more suitable slidingly between cylinder and the medium, elastic layer outside, also have the smooth layer that coefficient of friction is lower than 0.40 μ s in order to make.
With above-mentioned foundation desirable embodiment of the present invention is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.The technical scope of this invention is not limited to the content on the specification, must determine its technical scope according to the claim scope.

Claims (8)

1. a platen comprises a rotatingcylindrical drum body, it is characterized in that: described rotatingcylindrical drum body is outside equipped with two-layer at least, be in regular turn,
Elastic layer, the hardness of described elastic layer is less than 45 degree;
Be arranged at the outer smooth layer of elastic layer, the coefficient of friction of described smooth layer is lower than 0.40 μ s.
2. platen according to claim 1 is characterized in that: the material that described cylinder body is adopted is the metal of density greater than 2.7 gram/cubic centimetres.
3. platen according to claim 2 is characterized in that: described metal is steel or aluminium or stainless steel or nickel-clad iron.
4. platen according to claim 1 is characterized in that: the employed material of described elastic layer is foaming sponge or the silica gel of hardness less than 45 degree.
5. platen according to claim 4 is characterized in that: the thickness of described elastic layer is 2mm~5mm.
6. platen according to claim 1 is characterized in that: described smooth layer is a resin bed.
7. platen according to claim 6 is characterized in that: the employed material of described resin bed can be ultra-high molecular weight polyethylene or polytetrafluoroethylene or nylon or polyformaldehyde.
8. platen according to claim 1 is characterized in that: be provided with adhesive tape between described rotatingcylindrical drum body and described elastic layer and the described smooth layer.
CN 201010563853 2010-11-29 2010-11-29 Pressure paper roller Pending CN102088535A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201010563853 CN102088535A (en) 2010-11-29 2010-11-29 Pressure paper roller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201010563853 CN102088535A (en) 2010-11-29 2010-11-29 Pressure paper roller

Publications (1)

Publication Number Publication Date
CN102088535A true CN102088535A (en) 2011-06-08

Family

ID=44100134

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201010563853 Pending CN102088535A (en) 2010-11-29 2010-11-29 Pressure paper roller

Country Status (1)

Country Link
CN (1) CN102088535A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61202865A (en) * 1985-03-05 1986-09-08 Hitachi Cable Ltd Platen roller
JPS6416675A (en) * 1987-07-10 1989-01-20 Canon Kk Thermal-type printer
JPH01202468A (en) * 1988-02-08 1989-08-15 Fujitsu Ltd Thermal printer
CN1517806A (en) * 2003-01-15 2004-08-04 ������������ʽ���� Image read-out device and image forming device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61202865A (en) * 1985-03-05 1986-09-08 Hitachi Cable Ltd Platen roller
JPS6416675A (en) * 1987-07-10 1989-01-20 Canon Kk Thermal-type printer
JPH01202468A (en) * 1988-02-08 1989-08-15 Fujitsu Ltd Thermal printer
CN1517806A (en) * 2003-01-15 2004-08-04 ������������ʽ���� Image read-out device and image forming device

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Application publication date: 20110608