Facsimile and static presentation processing – Facsimile – Synchronization
Patent
1990-05-14
1993-03-30
Ng, Jin F.
Facsimile and static presentation processing
Facsimile
Synchronization
358486, H04N 136
Patent
active
051989093
ABSTRACT:
A vibration preventive system in use with an image recording apparatus of the type in which an original is scanned by reciprocatively moving an imaging unit by a stepping motor in two different types of scan modes, a forward scan mode in which an original read region is a constant speed region and a back scan mode to return the imaging unit to an original position at a high speed, the vibration preventive system comprising a drive current control for controlling a drive current fed to the stepping motor in such a way that in the constant speed region, drive current for driving the stepping motor is changed to a value smaller than that in an acceleration region. In the forward scan mode, the drive current is changed before the imaging unit reaches the registration position or after the end of acceleration in the forward scan mode. When the imaging unit is between them, the drive current is changed at a point in the undershoot of a transient vibration after the end of acceleration, or at the tail edge of the forward scan mode.
REFERENCES:
patent: 4651222 (1987-03-01), Gokita
patent: 5008607 (1991-04-01), Ono et al.
patent: 5062006 (1991-10-01), Miura
Nagano Kuninobu
Ogiwara Masuji
Ohmori Kimihito
Sudo Harutaka
Fuji 'Xerox Co., Ltd.
Lefkowitz Edward
Ng Jin F.
LandOfFree
Driving apparatus and method for scanning system for use in imag does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Driving apparatus and method for scanning system for use in imag, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Driving apparatus and method for scanning system for use in imag will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1285190