Facsimile and static presentation processing – Facsimile – Picture signal generator
Reexamination Certificate
1998-05-28
2001-12-04
Grant, II, Jerome (Department: 2624)
Facsimile and static presentation processing
Facsimile
Picture signal generator
C358S296000
Reexamination Certificate
active
06327054
ABSTRACT:
BACKGROUND OF THE INVENTION
Interchangeable scanning drums of drum scanners that are seated at one side for scanning opaque or transparency image originals must be capable of being reliably and quickly connected to the rotatory drive of the scanner unit. Interchangeable drum embodiments facilitate the attachment of the image originals and allow an economic assembly of scanning drums that, preparatory to the job, can be loaded with image originals simultaneously with the scanning process. According to the Prior Art disclosed in, among others, European Letters Patent EP 0 279 874, it was previously necessary to design cost-intensive, actively supported coupling device in order to achieve an adequately stable connection and a dependable, dynamic operation.
SUMMARY OF THE INVENTION
It is an object of the present invention to avoid the above disadvantage with a cost-beneficial design. The present invention makes use of centrifugal forces produced by the scanner rotation for the coupling of the drum and the drive motor flange with toggle lever mechanisms.
According to the clamping device system of the invention for an interchangeable scanning drum seated at one side in a drum scanner for scanning of opaque and transparency image originals for achieving an adequately stable connection and reliable, dynamic operation, a scanning drum is provided having a mounting flange centrally positioned relative to an acceptance flange of a drive motor. The mounting flange of the scanning drum is connected to the acceptance flange of the drive motor with a plurality of clamping devices. Each clamping device is formed of a tension lever, a connecting rod, and a clamp lever. Each clamping device has at least one spring for generating a basic gripping force for initial fixing and for preventing sliding upon run-up, the basic gripping force being transmitted via the tension lever, the connecting rod, and the clamped lever. Upon rotation of the scanner, centrifugal force acts upon a toggle lever mechanism in each clamping device formed of the tension lever, the connecting rod, and the clamp lever, so that the gripping force of the clamp lever against the collar of the drum flange is greatly increased in a simple way in order to generate a stable and reliable coupling of the mounting and acceptance flanges, despite a tilting force produced by a residual imbalance. Only a slight release switch force is provided for a drum change due to the low basic gripping force.
The invention is explained in greater detail below with reference to
FIGS. 1
,
2
,
3
and
4
.
REFERENCES:
patent: 3849592 (1974-11-01), Rosenheck
patent: 4506301 (1985-03-01), Kingsley
patent: 4543615 (1985-09-01), Campenhout
patent: 4605970 (1986-08-01), Hawkins
patent: 4902156 (1990-02-01), Deisler et al.
patent: 44 27 851 (1995-09-01), None
patent: 0 279 874 (1987-02-01), None
patent: 0 590 907 (1994-06-01), None
patent: 2 248 901 (1973-10-01), None
Grant II Jerome
Heidelberger Druckmaschinen Aktiengesellschaft
Schiff & Hardin & Waite
Worku Negussie
LandOfFree
Clamping device for connecting interchangeable scanning... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Clamping device for connecting interchangeable scanning..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Clamping device for connecting interchangeable scanning... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2589827