Facsimile and static presentation processing – Facsimile – Picture signal generator
Reexamination Certificate
1998-04-01
2001-05-22
Grant, II, Jerome (Department: 2724)
Facsimile and static presentation processing
Facsimile
Picture signal generator
Reexamination Certificate
active
06236472
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a flatbed scanner, and more particularly, to a flatbed scanner that uses a single dynamic source to support dynamic for both the light projection device and the image pick-up device of the flatbed scanner.
2. Description of the Prior Art
Nowadays, kinds of scanners are broadly used in computers. Some scanners can scan reflective documents by feeding the reflective documents into the scanners themselves, however, transparent documents only can be scanned through the assistant devices of the scanners. A convenient way for scanning both of the transparent and reflective documents is to apply flatbed scanners. Accordingly, after the transparent documents are put at the top of the transparent windows of the flatbed scanners, the transparent documents can thus be scanned through the cooperation of both the light source and the image generation devices.
FIG. 2
depicts the cross section of a conventional flatbed scanner
20
that is composed of an upper portion
201
and a lower portion
202
for cooperatively scanning a scanned document
218
. The upper portion
201
and a lower portion
202
are fastened by using a connection apparatus
219
, and the scanned document
218
can be a transparent document such as a projection slide or a lantern slide. When scan operations start, the dynamic generated by the motor
208
of the upper portion
201
will be transferred through gear sets
207
, a pulley
203
, and a transmission belt
204
to drive the light projection device
205
. In addition, a dynamic generated by the motor
216
of the lower portion
202
is transferred through gear sets
215
, a pulley
209
, and transmission belt
210
to drive the image pick-up device
211
. The light projection device
205
further includes a light source
206
. Furthermore, the image pick-up device
211
encompasses a scanning set, which further comprises a light source
212
, mirrors
217
, lenses
213
, and a CCD (Charge-Coupled Device) sensor
214
. As noted, both the light projection device
205
and the image pick-up device
211
move together to scan the scanned document
218
cooperatively. Moreover, the light source
206
is used for scanning the transparent documents, and the light source
212
is used to scan the reflective documents.
Evidently, in the flatbed scanner, both of the upper and lower portions respectively need a motor to generated required dynamic. It is obvious that more power consumption and further components are necessary to establish the flatbed scanner
20
, and more controlled lines are also required for controlling the cooperation between the light projection device
205
and the image pick-up device
211
. A need has been arisen to disclose a flatbed scanner, in which less power consumption and fewer required components are needed for controlling the scan operations.
SUMMARY OF THE INVENTION
The object of the invention is to disclose a flatbed scanner that scans the scanned documents by using less power consumption and fewer required components than the conventional scheme.
Accordingly, the invention employs a single dynamic source to generate dynamic for both the light projection device and the image pick-up device of the flatbed scanner. When the dynamic is generated, it is then transferred by gear sets and transferred components to respectively drive the light projection device and the image pick-up device to perform the scan operations.
REFERENCES:
patent: 4870294 (1989-09-01), Hasegawa
patent: 4873579 (1989-10-01), Kubota et al.
patent: 4996604 (1991-02-01), Ogawa et al.
patent: 5298931 (1994-03-01), Telle
patent: 5381245 (1995-01-01), Johnston et al.
patent: 5677777 (1997-10-01), Tsai
patent: 5822087 (1998-10-01), Tsai
patent: 5895914 (1999-04-01), Tsai
Grant II Jerome
Mustek Systems Inc.
LandOfFree
Flatbed scanners with single dynamic source does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Flatbed scanners with single dynamic source, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flatbed scanners with single dynamic source will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2532336