CA2077860C - Image scanner - Google Patents
Image scannerInfo
- Publication number
- CA2077860C CA2077860C CA002077860A CA2077860A CA2077860C CA 2077860 C CA2077860 C CA 2077860C CA 002077860 A CA002077860 A CA 002077860A CA 2077860 A CA2077860 A CA 2077860A CA 2077860 C CA2077860 C CA 2077860C
- Authority
- CA
- Canada
- Prior art keywords
- original
- polarizing
- image sensor
- original copy
- holder
- 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.)
- Expired - Fee Related
Links
- 229920003023 plastic Polymers 0.000 description 5
- 239000004925 Acrylic resin Substances 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012015 optical character recognition Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00795—Reading arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/04—Scanning arrangements
- H04N2201/0402—Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
- H04N2201/043—Viewing the scanned area
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimile Scanning Arrangements (AREA)
- Optical Systems Of Projection Type Copiers (AREA)
- Projection-Type Copiers In General (AREA)
- Holders For Sensitive Materials And Originals (AREA)
Abstract
An image scanner including an original holder 12 for holding an original copy 11 placed on a transparent original support plate 10 in place. The original copy 11 is illuminated by a light source 13 and a reflected light 18 from the original copy 11 is received by an image sensor 14.
To check a position of the original copy 11 visually while the original holder 12 is closed, the original holder 12 comprises a transparent first polarizing plate having a first polarizing angle. An external light coming inside the case body through the first polarizing plate is prevented from reaching the image sensor 14 by a second polarizing plate 16 which has a second polarizing angle rotated by 90°
from the first polarizing angle and is disposed between the original copy 11 and the image sensor 14 in a light path of a light incoming into the image sensor 14.
To check a position of the original copy 11 visually while the original holder 12 is closed, the original holder 12 comprises a transparent first polarizing plate having a first polarizing angle. An external light coming inside the case body through the first polarizing plate is prevented from reaching the image sensor 14 by a second polarizing plate 16 which has a second polarizing angle rotated by 90°
from the first polarizing angle and is disposed between the original copy 11 and the image sensor 14 in a light path of a light incoming into the image sensor 14.
Description
2~7~860 IMAGE SCANNER
BACKGROUND OF THE INVENTION
This invention relates to an image scanner and, more particularly, to an image scanner for sc~nni ng an information of an original copy by using an image sensor thereof. The term "image scanner" in this application refers to an apparatus for reading an image or character information of an original copy by detecting reflected light from the original copy and includes image readers, optical character readers, copying machines, or the like.
Fig. 9 illustrates one example of a conventional image scanner. In Fig. 9, reference numeral 1 designates a case body whose top end is open, 2 designates an original support plate made of glass for supporting an original copy (not shown) thereon, 3 designates a scanning unit. The sc~nni ng unit 3 has therein an image sensor (not shown) and a light source (not shown) for illuminating an original copy and moves right and left to scan an information of an original copy. 4 designates a swinging original holder made of an opaque plastic plate for covering and pressing down an original copy placed on the original support plate 2.
In the image scanner as described above, an operator places an original copy Gn the original support plate 2 and closes the swinging original holder 4 to prevent an external light from coming into inside of the case body 1. And the original copy is illuminated by the light source and a reflected light from the original copy is received by the image sensor.
While the image scanner is sc~nni ng the information of an original copy with the image sensor therein, if an external light is coming into the image sensor through an original copy placed on the original support plate 2, the external light reduces a concentration of the information of the original copy and a noise in scanning is caused by it. Therefore the external light should be prevented by the opaque original holder 4 from reaching the image sensor.
However, while the opaque original holder 4 is closed, a position of the original copy can not be chec~ed visually by the operater. So, even if the position of the original copy is moved out of place when the operator closes the original holder 4, the information of the original copy is scanned as the original copy is at the incorrect position. And then the information of the original copy needs to be scanned again after the original copy is re-placed in place.
SUMMhRY OF THE INV~NTION
Accordingly, one object of the present invention is to provide an image scanner free from the above-discussed problems of the conventional image scanner.
Another object of the present invention is to provide an image scanner in which a position of an original copy can be checked visually by an operator while preventing the image sensor from receiving the external noise light when the original holder is closed.
With the above object in view, the image scanner of the present invention comprises an original holder comprising first polarizing means for allowing the position of the original copy to be visible therethrough and having a first polarizing angle. Further, second polarizing means is disposed between the original copy and the image sensor in a light path of a light incoming into the image sensor, and having a second polarizing angle rotated by 90 from the first polarizing angle of the first polarizing means.
20778~0 The second polarizing means prevents an external light coming through the first polarizing means of the original holder from reaching the image sensor. And the image sensor receiving only a reflected light from the original copy. A noise by the external light is not caused, and then the information of the original copy is scanned satisfactorily.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will become more readily apparent from the following detailed description of the preferred embodiments of the present invention taken in conjunction with the accompanying drawings, in which:
Fig. 1 is a schematic sectional view of an embodiment of the image scanner of the present invention;
Fig. 2 is a sectional view of an embodiment of an actual structure of the scanning unit of the imase scanner of the present invention;
Fig. 3 is a schematic sectional view of another embodiment of the image scanner of the present invention;
Fig. 4 is a schematic sectional view of still another embodiment of the image scanner of the present invention;
Fig. 5 is a schematic sectional view of a further embodiment of the image scanner of the present invention;
Fig. 6 is a schematic sectional view of a still further embodiment of the image scanner of the present invention;
Fig. 7 is a top plan view of another embodiment of the image scanner of the present invention;
Fig. 8 is a schematic sectional view of the embodiment illustrated in Fig. 7; and Fig. 9 is a perspective view of a conventional `` 2077860 image scanner.
DESCRIPTION OF THE PREFERRED ~MBODIMENI S
Fig. 1 illustrates an image scanner of the present invention, which comprises a substantially box-shaped and hollow, light-impermeable plastic case body 1 similar to that shown in Fig. 9 and having an open top end. A
transparent original support plate 10 made for example of glass is attached to the open top end of the case body and has an original supporting surface 1Oa for supporting an original copy 11 thereon. A light source 13 is disposed within the case body 1 and is faced the original support plate 10 for illuminating the original copy 11 on the original supporting surface 1Oa through the original support plate 10. Further, an image sensor 14 is disposed within the case body 1 for receiving a reflected light 18 from the original copy 11. The image sensor 14 comprises a transparent cover 14a. A focusing lens 15 is disposed between the image sensor 14 and the original support plate 10. The light source 13, the image sensor 14 and the focusing lens 15 together constitute a unitary scanning unit 17. One example of an actual structure of the scanning unit 17 is illustrated in Fig. 2. As is well known, the scanning unit 17 is moved right and left, back and forth, further, up and down by shifting means such as motor-driven timing belts during a scanning operation.
An original holder 12 which may be a plate member hinged to the case body 1 is disposed on the original support plate 10 for holding the original copy 11 placed on the original supporting surface 1Oa in place. The original holder 12 is entirely made of a first polarizing plastic plate such as acrylic resin which has a first polarizing angle and has a weight to press down the original copy 11.
The original holder 12 allows the position of the original c~py 11 ts be visible therethrough.
Further, a second polarizing plate 16 is disposed between the focusing lens 15 and the image sensor 14 in a light path of a light incoming into the image sensor 14.
The second polarizing plate 16 has a second polarizing angle rotated by 90 from the first polarizing angle of the first polarizing plate 12 for preventing a polarized external light coming through the original holder or the first polarizing plate 12 from reaching said image sensor 14.
Therefore the image sensor 14 receives only the reflected light 18 from the original copy 11.
In the image scanner of the present invention, by using two polarizing plates which have different polarizing angles rotated by 90 from each other, in other words, by using the first polarizing plate of the original holder 12 and the second polarizing plate 16 disposed between the original copy 11 and the image sensor 14 in a light path 18 of a light incoming into the image sensor 14, a position of the original copy 11 can be checked visually by an operator through the original holder 12 while preventing the image sensor 14 from receiving the external noise light when the original holder 12 is closed.
Fig. 3 illustrates another embodiment of the image scanner of the present invention, which has basically the same structure as that illustrated in Fig. 1, and which has a composite original holder 12a comprising a transparent plastic plate 12b and a polarizing sheet 12c made for example of an acrylic resin which has the second polarizing angle and is entirely attached to one of the surfaces of the transparent plate 12b. By using the polarizing sheet 12c, this embodiment is comparatively more economical.
Fig. 4 illustrates still another embodiment of the 207786~
image scanner of the present invention, in which a transpa~ent original support plate 1Ob is made of the second polari2ing acrylic material and serves as the second polarizing plate 16 shown in Figs. 1 to 3. Thus, the single original support plate 1~0b has a dual function of supporting the original copy and of polarizing the light. The rest of the structure of this embodiment are the same as that described in the description of Fig. 1. In this embodiment the assembling operation is easy because of the reduced number of parts. And since the second polarizing plate is large, an external noise light can be prevented more safely.
Fig. 5 illustrates a further embodiment of the image scanner of the present invention, which has basically the same structure as that illustrated in Fig. 4 but is di~ferent in that a polarizing sheet 16a made for example of an acrylic resin having a second polarizing angle is attached to the transparent original support plate 10 made for example of glass. As described in the description of Fig. 3, by using a polarizing sheet, the cost can be cut down. In addition to the second polarizing means, if the first polarizing means comprises a polarizing sheet as illustrated in Fig. 3, it is more economical.
Fig. 6 illustrates a still further embodiment of the image scanner of the present invention, which has also basically the same structure as that illustrated in Fig. 4.
In this case, a second polarizing plate 16b is attached to the upside surface of the image sensor 14 as the transparent cover of the image sensGr 14. As the second polarizing plate 16b is disposed just above the image sensor 14 directly, an external light is prevented certainly. The assembling operation is easy, and further, by using a comparatively small second polarizing plate 16b, this embodiment can curtail expenses.
2077~60 Fig. 7 illustrates a top plan view of still anoth~r embodiment of the image scanner o, the present invention, in which an original holder 22 is made of a light-impermeable plastic plate and has a few windows 22b fitted with the first polarizing plates 22a therein for visually checking a position of the original copy 11. The windows 22b are disposed for example according to corners of a standard sized paper such as A4 (297x21Omm) or B5 (257X182mm)~ Fig. ~ illustrates a sectional view of the embodiment illustrated in Fig. 7 which has also basically the same structure as that illustrated in Fig. 1. As illustrated in Fig. 8, an external light coming through the first polarizing plates 22a is prevented from reaching the image sensor 14 by the second polarizing plate 16. As the first polarizing plates 22a are disposed inside Gf the windows 22b of the original holder 22, the first polarizing plates 22a are surrounded and protected from damages by the original holder 22. In this embodiment by using small polarizing plates, this em~odiment is also econGmical.
In the above embodiments, the first polarizing means of the original holder 12 may include, if necessary, means for protecting an operator's eyes from lights of the light source 13 during the sc~nni ng operation. For example, the first polarizing plate may be made of a tinted plate, a half-mirror plate or a translucent plate.
BACKGROUND OF THE INVENTION
This invention relates to an image scanner and, more particularly, to an image scanner for sc~nni ng an information of an original copy by using an image sensor thereof. The term "image scanner" in this application refers to an apparatus for reading an image or character information of an original copy by detecting reflected light from the original copy and includes image readers, optical character readers, copying machines, or the like.
Fig. 9 illustrates one example of a conventional image scanner. In Fig. 9, reference numeral 1 designates a case body whose top end is open, 2 designates an original support plate made of glass for supporting an original copy (not shown) thereon, 3 designates a scanning unit. The sc~nni ng unit 3 has therein an image sensor (not shown) and a light source (not shown) for illuminating an original copy and moves right and left to scan an information of an original copy. 4 designates a swinging original holder made of an opaque plastic plate for covering and pressing down an original copy placed on the original support plate 2.
In the image scanner as described above, an operator places an original copy Gn the original support plate 2 and closes the swinging original holder 4 to prevent an external light from coming into inside of the case body 1. And the original copy is illuminated by the light source and a reflected light from the original copy is received by the image sensor.
While the image scanner is sc~nni ng the information of an original copy with the image sensor therein, if an external light is coming into the image sensor through an original copy placed on the original support plate 2, the external light reduces a concentration of the information of the original copy and a noise in scanning is caused by it. Therefore the external light should be prevented by the opaque original holder 4 from reaching the image sensor.
However, while the opaque original holder 4 is closed, a position of the original copy can not be chec~ed visually by the operater. So, even if the position of the original copy is moved out of place when the operator closes the original holder 4, the information of the original copy is scanned as the original copy is at the incorrect position. And then the information of the original copy needs to be scanned again after the original copy is re-placed in place.
SUMMhRY OF THE INV~NTION
Accordingly, one object of the present invention is to provide an image scanner free from the above-discussed problems of the conventional image scanner.
Another object of the present invention is to provide an image scanner in which a position of an original copy can be checked visually by an operator while preventing the image sensor from receiving the external noise light when the original holder is closed.
With the above object in view, the image scanner of the present invention comprises an original holder comprising first polarizing means for allowing the position of the original copy to be visible therethrough and having a first polarizing angle. Further, second polarizing means is disposed between the original copy and the image sensor in a light path of a light incoming into the image sensor, and having a second polarizing angle rotated by 90 from the first polarizing angle of the first polarizing means.
20778~0 The second polarizing means prevents an external light coming through the first polarizing means of the original holder from reaching the image sensor. And the image sensor receiving only a reflected light from the original copy. A noise by the external light is not caused, and then the information of the original copy is scanned satisfactorily.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will become more readily apparent from the following detailed description of the preferred embodiments of the present invention taken in conjunction with the accompanying drawings, in which:
Fig. 1 is a schematic sectional view of an embodiment of the image scanner of the present invention;
Fig. 2 is a sectional view of an embodiment of an actual structure of the scanning unit of the imase scanner of the present invention;
Fig. 3 is a schematic sectional view of another embodiment of the image scanner of the present invention;
Fig. 4 is a schematic sectional view of still another embodiment of the image scanner of the present invention;
Fig. 5 is a schematic sectional view of a further embodiment of the image scanner of the present invention;
Fig. 6 is a schematic sectional view of a still further embodiment of the image scanner of the present invention;
Fig. 7 is a top plan view of another embodiment of the image scanner of the present invention;
Fig. 8 is a schematic sectional view of the embodiment illustrated in Fig. 7; and Fig. 9 is a perspective view of a conventional `` 2077860 image scanner.
DESCRIPTION OF THE PREFERRED ~MBODIMENI S
Fig. 1 illustrates an image scanner of the present invention, which comprises a substantially box-shaped and hollow, light-impermeable plastic case body 1 similar to that shown in Fig. 9 and having an open top end. A
transparent original support plate 10 made for example of glass is attached to the open top end of the case body and has an original supporting surface 1Oa for supporting an original copy 11 thereon. A light source 13 is disposed within the case body 1 and is faced the original support plate 10 for illuminating the original copy 11 on the original supporting surface 1Oa through the original support plate 10. Further, an image sensor 14 is disposed within the case body 1 for receiving a reflected light 18 from the original copy 11. The image sensor 14 comprises a transparent cover 14a. A focusing lens 15 is disposed between the image sensor 14 and the original support plate 10. The light source 13, the image sensor 14 and the focusing lens 15 together constitute a unitary scanning unit 17. One example of an actual structure of the scanning unit 17 is illustrated in Fig. 2. As is well known, the scanning unit 17 is moved right and left, back and forth, further, up and down by shifting means such as motor-driven timing belts during a scanning operation.
An original holder 12 which may be a plate member hinged to the case body 1 is disposed on the original support plate 10 for holding the original copy 11 placed on the original supporting surface 1Oa in place. The original holder 12 is entirely made of a first polarizing plastic plate such as acrylic resin which has a first polarizing angle and has a weight to press down the original copy 11.
The original holder 12 allows the position of the original c~py 11 ts be visible therethrough.
Further, a second polarizing plate 16 is disposed between the focusing lens 15 and the image sensor 14 in a light path of a light incoming into the image sensor 14.
The second polarizing plate 16 has a second polarizing angle rotated by 90 from the first polarizing angle of the first polarizing plate 12 for preventing a polarized external light coming through the original holder or the first polarizing plate 12 from reaching said image sensor 14.
Therefore the image sensor 14 receives only the reflected light 18 from the original copy 11.
In the image scanner of the present invention, by using two polarizing plates which have different polarizing angles rotated by 90 from each other, in other words, by using the first polarizing plate of the original holder 12 and the second polarizing plate 16 disposed between the original copy 11 and the image sensor 14 in a light path 18 of a light incoming into the image sensor 14, a position of the original copy 11 can be checked visually by an operator through the original holder 12 while preventing the image sensor 14 from receiving the external noise light when the original holder 12 is closed.
Fig. 3 illustrates another embodiment of the image scanner of the present invention, which has basically the same structure as that illustrated in Fig. 1, and which has a composite original holder 12a comprising a transparent plastic plate 12b and a polarizing sheet 12c made for example of an acrylic resin which has the second polarizing angle and is entirely attached to one of the surfaces of the transparent plate 12b. By using the polarizing sheet 12c, this embodiment is comparatively more economical.
Fig. 4 illustrates still another embodiment of the 207786~
image scanner of the present invention, in which a transpa~ent original support plate 1Ob is made of the second polari2ing acrylic material and serves as the second polarizing plate 16 shown in Figs. 1 to 3. Thus, the single original support plate 1~0b has a dual function of supporting the original copy and of polarizing the light. The rest of the structure of this embodiment are the same as that described in the description of Fig. 1. In this embodiment the assembling operation is easy because of the reduced number of parts. And since the second polarizing plate is large, an external noise light can be prevented more safely.
Fig. 5 illustrates a further embodiment of the image scanner of the present invention, which has basically the same structure as that illustrated in Fig. 4 but is di~ferent in that a polarizing sheet 16a made for example of an acrylic resin having a second polarizing angle is attached to the transparent original support plate 10 made for example of glass. As described in the description of Fig. 3, by using a polarizing sheet, the cost can be cut down. In addition to the second polarizing means, if the first polarizing means comprises a polarizing sheet as illustrated in Fig. 3, it is more economical.
Fig. 6 illustrates a still further embodiment of the image scanner of the present invention, which has also basically the same structure as that illustrated in Fig. 4.
In this case, a second polarizing plate 16b is attached to the upside surface of the image sensor 14 as the transparent cover of the image sensGr 14. As the second polarizing plate 16b is disposed just above the image sensor 14 directly, an external light is prevented certainly. The assembling operation is easy, and further, by using a comparatively small second polarizing plate 16b, this embodiment can curtail expenses.
2077~60 Fig. 7 illustrates a top plan view of still anoth~r embodiment of the image scanner o, the present invention, in which an original holder 22 is made of a light-impermeable plastic plate and has a few windows 22b fitted with the first polarizing plates 22a therein for visually checking a position of the original copy 11. The windows 22b are disposed for example according to corners of a standard sized paper such as A4 (297x21Omm) or B5 (257X182mm)~ Fig. ~ illustrates a sectional view of the embodiment illustrated in Fig. 7 which has also basically the same structure as that illustrated in Fig. 1. As illustrated in Fig. 8, an external light coming through the first polarizing plates 22a is prevented from reaching the image sensor 14 by the second polarizing plate 16. As the first polarizing plates 22a are disposed inside Gf the windows 22b of the original holder 22, the first polarizing plates 22a are surrounded and protected from damages by the original holder 22. In this embodiment by using small polarizing plates, this em~odiment is also econGmical.
In the above embodiments, the first polarizing means of the original holder 12 may include, if necessary, means for protecting an operator's eyes from lights of the light source 13 during the sc~nni ng operation. For example, the first polarizing plate may be made of a tinted plate, a half-mirror plate or a translucent plate.
Claims (9)
1. An image scanner comprising:
a hollow, light-impermeable case body having an open top end;
a transparent original support means attached to said top end of said case body and having an original supporting surface for supporting an original copy thereon;
a light source disposed within said case body for illuminating the original copy on said original supporting surface of said original support means;
an image sensor disposed within said case body for receiving a reflected light from the original copy;
an original holder disposed on said original support means for holding the original copy placed on said original support means in place, said original holder comprising first polarizing means for allowing the position of the original copy to be visible therethrough and having a first polarizing angle; and second polarizing means disposed between the original copy and said image sensor in a light path of a light incoming into said image sensor, and having a second polarizing angle rotated by 90° from said first polarizing angle of said first polarizing means for preventing an external light coming through said first polarizing means of said original holder from reaching said image sensor, whereby a position of the original copy can be checked by an operator through said original holder while preventing the image sensor from receiving the external noise light when said original holder is closed.
a hollow, light-impermeable case body having an open top end;
a transparent original support means attached to said top end of said case body and having an original supporting surface for supporting an original copy thereon;
a light source disposed within said case body for illuminating the original copy on said original supporting surface of said original support means;
an image sensor disposed within said case body for receiving a reflected light from the original copy;
an original holder disposed on said original support means for holding the original copy placed on said original support means in place, said original holder comprising first polarizing means for allowing the position of the original copy to be visible therethrough and having a first polarizing angle; and second polarizing means disposed between the original copy and said image sensor in a light path of a light incoming into said image sensor, and having a second polarizing angle rotated by 90° from said first polarizing angle of said first polarizing means for preventing an external light coming through said first polarizing means of said original holder from reaching said image sensor, whereby a position of the original copy can be checked by an operator through said original holder while preventing the image sensor from receiving the external noise light when said original holder is closed.
2. An image scanner as claimed in claim 1, wherein a focusing lens is disposed between said image sensor and said original support means, and said second polarizing means is disposed between said image sensor and said focusing lens.
3. An image scanner as claimed in claim 1, wherein said original holder is entirely made of said first polarizing means having a weight to press down the original copy.
4. An image scanner as claimed in claim 1, wherein said first polarizing means comprises a polarizing sheet, and said original holder comprises a transparent plate and said polarizing sheet attached to the whole surface of said transparent plate.
5. An image scanner as claimed in claim 1, wherein said transparent original support means and said second polarizing means are composed of an integral polarizing plate member.
6. An image scanner as claimed in claim 1, wherein said second polarizing means comprises a polarizing sheet attached to said original support means.
7. An image scanner as claimed in claim 1, wherein said image sensor comprises a cover, and said cover of said image sensor comprises said second polarizing means.
8. An image scanner as claimed in claim 1, wherein said original holder is made of a light-impermeable plate and has a window fitted with said first polarizing means therein for visually checking a position of the original copy .
9. An image scanner as claimed in claim 1, wnerein said original holder includes means for protecting an operator's eyes from said light source.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3-229067 | 1991-09-09 | ||
| JP3229067A JPH0568147A (en) | 1991-09-09 | 1991-09-09 | Original reader |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2077860A1 CA2077860A1 (en) | 1993-03-10 |
| CA2077860C true CA2077860C (en) | 1996-04-30 |
Family
ID=16886220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002077860A Expired - Fee Related CA2077860C (en) | 1991-09-09 | 1992-09-09 | Image scanner |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPH0568147A (en) |
| KR (1) | KR960008377B1 (en) |
| CA (1) | CA2077860C (en) |
| DE (1) | DE4230173C2 (en) |
| GB (1) | GB2259371B (en) |
| TW (1) | TW256809B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5625469A (en) * | 1995-06-29 | 1997-04-29 | Agfa Division, Bayer Corp. | Apparatus for alignment of material to be scanned in a flat-bed scanner |
| GB2309087A (en) * | 1996-01-10 | 1997-07-16 | Michael Waddingham | Photocopiers |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63218935A (en) * | 1987-03-09 | 1988-09-12 | Toshiba Eng Co Ltd | Confirming device for original of copying machine |
-
1991
- 1991-09-09 JP JP3229067A patent/JPH0568147A/en active Pending
-
1992
- 1992-03-07 TW TW081101742A patent/TW256809B/zh active
- 1992-09-08 KR KR92016388A patent/KR960008377B1/en not_active IP Right Cessation
- 1992-09-09 DE DE4230173A patent/DE4230173C2/en not_active Expired - Fee Related
- 1992-09-09 GB GB9219061A patent/GB2259371B/en not_active Expired - Fee Related
- 1992-09-09 CA CA002077860A patent/CA2077860C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| TW256809B (en) | 1995-09-11 |
| DE4230173A1 (en) | 1993-03-18 |
| GB2259371A (en) | 1993-03-10 |
| DE4230173C2 (en) | 1996-08-01 |
| JPH0568147A (en) | 1993-03-19 |
| GB9219061D0 (en) | 1992-10-21 |
| KR930007196A (en) | 1993-04-22 |
| KR960008377B1 (en) | 1996-06-26 |
| GB2259371B (en) | 1994-12-14 |
| CA2077860A1 (en) | 1993-03-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |