Information
-
Patent Grant
-
6390464
-
Patent Number
6,390,464
-
Date Filed
Monday, September 20, 199925 years ago
-
Date Issued
Tuesday, May 21, 200222 years ago
-
CPC
-
US Classifications
Field of Search
US
- 271 303
- 271 902
- 271 184
- 271 185
- 271 176
- 271 273
- 318 599
-
International Classifications
-
Abstract
The present invention relates to media handling devices and media handling methods. One aspect of the invention provides a media handling method including providing a media handling device having an initial media path; selectively moving a guide member using a motor intermediate a first position where the guide member is spaced from media within the initial media path and a second position where the guide member contacts the media within the initial media path; applying a control signal to the motor to control the moving; and modulating the control signal.
Description
FIELD OF THE INVENTION
The present invention relates to media handling devices and media handling methods.
BACKGROUND OF THE INVENTION
Image forming devices, such as printers and copiers, have become increasingly sophisticated. Some image forming devices provide additional functions other than typical printing or document reproduction functions. Some conventional printers and other image formation systems include a plurality of device attachments or stations configured to handle such additional functions. More specifically, in addition to the provided image formation equipment, assemblies can be included for stapling documents, stacking documents, folding documents, etc.
Media handling devices are typically provided to direct media to proper document preparation stations. In some applications, handling functions of media are implemented to provide proper orientation or presentation of media to the various document preparation stations. An exemplary handling function is flipping the orientation of media during passage of the media from one station to another.
Accordingly, conventional paper handling systems have been developed to provide flipping and other media handling functions. One exemplary media handling device includes an input device configured to receive media and initially direct media within the media handling device. A set of rollers is typically positioned downstream of such input device. During entry of media within the media handling device, the rollers are provided in a receiving state wherein the rollers are separated by a fixed distance in order to receive the incoming media. Following entry of the media intermediate the separated rollers, a motor is actuated to draw one roller towards the other roller with the inputted media therebetween.
The movement of the roller is implemented using a direct current (DC) motor in some designs. In such arrangements, the DC motor operates to move the separated roller towards the other roller to contact the media. Thereafter, the plural rollers control subsequent movement of the media within the media handling device.
In conventional configurations, the DC motor drives the movable roller to a hard stop against the other roller. Such is implemented without the use of feedback control to indicate the position of the roller being moved. However, the hard stops have been observed to produce acoustic noise during operation of the media handling device. Such acoustic noise is undesirable in many environments.
Therefore, a need exists to provide improved media handling devices and methodologies to handle the movement of media.
SUMMARY OF THE INVENTION
According to one aspect of the invention, a media handling device comprises: a housing having an initial media path; a moveable guide member positioned to guide media within the initial media path; a motor configured to selectively move the guide member intermediate a first position where the guide member is spaced from the media within the initial media path and a second position where the guide member contacts the media within the initial media path; and a controller configured to apply a control signal to the motor to control the motor and corresponding movement of the guide member, the controller being further configured to modulate the control signal.
A second aspect of the invention provides a media handling device comprising: a housing having a first media path and a second media path; an input configured to provide media into the first media path; an output configured to output media from the second media path; a moveable guide member configured to direct the media from the first media path to the second media path to flip the media; a motor configured to move the guide member intermediate a first position where the guide member is spaced from the media within the initial media path and a second position where the guide member contacts the media within the initial media path; and a controller configured to apply a control signal to the motor to control the motor and corresponding movement of the guide member, the controller being further configured to modulate the control signal.
Another aspect of the invention provides a media handling method comprising: providing a media handling device having an initial media path; selectively moving a guide member using a motor intermediate a first position where the guide member is spaced from media within the initial media path and a second position where the guide member contacts the media within the initial media path; applying a control signal to the motor to control the moving; and modulating the control signal.
DESCRIPTION OF THE DRAWINGS
Preferred embodiments of the invention are described below with reference to the following accompanying drawings.
FIG. 1
is a functional block diagram of an exemplary media system according to one aspect of the present invention.
FIG. 2
is a functional representation of an exemplary media handling device of the media system.
FIG.
3
-
FIG. 7
are functional representations of exemplary operations of the media handling device.
FIG. 8
is a functional block diagram of components of an exemplary media handling device.
FIG. 9
is a flow chart which illustrates exemplary operations of the media handling device.
FIG. 10
is a graphical representation of operations of a motor of the media handling device.
DETAILED DESCRIPTION OF THE INVENTION
This disclosure of the invention is submitted in furtherance of the constitutional purposes of the U.S. Patent Laws “to promote the progress of science and useful arts” (Article 1, Section 8).
Referring to
FIG. 1
, an exemplary media system
10
is shown. The depicted media system
10
includes a first media device
12
, a media handling device
14
and a second media device
16
. In the illustrated configuration, devices
12
,
14
,
16
are implemented as separate units. In other arrangements according to the invention, devices
12
,
14
,
16
are implemented within a single housing forming a unitary device. Other configurations of media system
10
are possible.
Devices
12
,
14
,
16
are configured to provide different functions in the described media system
10
. In one embodiment, media device
12
and media device
16
are configured to provide processing operations of the media. For example, media device
12
may be an image forming device, such as a printer or copier, for providing images upon media. Second media device
16
can be configured to provide downstream processing operations of the printed media, such as stacking, stapling, etc.
Media handling device
14
is configured to receive media from first media device
12
and to apply such media to second media device
16
in the depicted arrangement. Media handling device
14
is configured to additionally provide media handling or manipulation operations in the described configuration. As detailed further below, media handling device
14
is configured to flip media received from media device
12
before application of such media to media device
16
. Devices
12
,
14
,
16
are configured to provide other operations or functionalities in other configurations.
Referring to
FIG. 2
, details of an exemplary configuration of media handling device
14
are shown. The illustrated media handling device
14
includes an outer housing
18
. Housing
18
includes an input
20
and output
22
as shown. Input
20
and output
22
can comprise orifices within housing
18
operable to respectively permit ingress and egress of media with respect to housing
18
. In the described arrangement, input
20
is positioned to receive media from media device
12
and output
22
is configured to output media to media device
16
.
The depicted configuration of housing
18
includes a first media path
24
and a second media path
26
as illustrated. Media received from media device
12
via input
20
is guided to media path
24
. More specifically, input
20
is arranged adjacent media path
24
to provide received media within media path
24
. Output
22
is positioned to receive media from media path
26
.
Media handling device
14
additionally includes plural guide assemblies
28
,
30
,
32
in the described embodiment. A sensor
34
is also provided within housing
18
of the illustrated media handling device
14
. In the depicted configuration, individual guide assemblies
28
,
30
,
32
comprise plural guide members. For example, guide assembly
28
includes guide members
36
,
38
. Guide assembly
30
includes guide members
40
,
42
. Guide assembly
32
includes guide members
44
,
46
. Exemplary guide members include rollers although other configurations of such guide members are possible. Guide members
40
,
42
of guide assembly
30
may be referred to as flipper switches which implement a flipping function of the media.
Guide assemblies
28
,
30
,
32
define media paths
24
,
26
within housing
18
. As depicted, guide assembly
28
defines a portion of media path
24
and guide assembly
32
defines a portion of media path
26
. Sensor
34
is positioned adjacent media path
24
and is sensitive to the presence of media traveling along media path
24
(media is not shown in FIG.
2
). Sensor
34
is configured to indicate the presence or absence of media at a corresponding location along media path
24
. Although not shown, additional sensors can be provided along media paths
24
,
26
to provide additional position information of media traveling along such media paths
24
,
26
.
As described in further detail below, guide assembly
30
is configured to receive media from first media path
24
and to guide such media to second media path
26
to flip the media. In the described configuration, guide member
40
is a moveable guide member and guide member
42
is a stationary guide member.
In the described configuration, a common motor (not shown) is utilized to drive guide members
36
,
38
,
42
. More specifically, guide members
36
,
38
,
42
are driven at a speed equal to the speed of media received from media device
12
in one embodiment. Guide member
40
is free to rotate in the described configuration.
Another motor (not shown in
FIG. 2
) is configured to move guide member
40
intermediate a first position (as illustrated in
FIG. 2
) where guide member
40
is spaced from media within media path
24
and a second position
41
(illustrated in phantom in
FIG. 2
) where guide member
40
contacts media within media path
24
.
Guide member
42
is positioned adjacent the second position
41
of moveable guide member
40
to contact media in media path
24
. More specifically, in such second position
41
, guide member
40
is adjacent guide member
42
with the media sandwiched therebetween. In the illustrated configuration, if no media is present within media paths
24
,
26
, guide member
40
in second position
41
contacts guide member
42
.
Guides
44
,
46
are driven by a motor (not shown) at a speed which matches a media speed of media device
16
in the described arrangement. Such facilitates transportation of media from media handling device
14
to media device
16
.
As described above, guide assembly
28
is an input guide configured to pass media received from input
20
along media path
24
in the described configuration. Guide assembly
32
provides an output guide configured to pass media along media path
26
to output
22
.
Guide assembly
30
is configured to direct media within media path
24
to media path
26
. Directing media from media path
24
to media path
26
operates to flip the media. A flap
48
is utilized to assist with the direction of media from media path
24
to media path
26
in the depicted configuration. Operations of flap
48
and guide assembly
30
are described in detail below with reference to FIG.
3
-FIG.
7
.
Referring to
FIG. 3
, media
50
is illustrated traveling along first media path
24
(shown in phantom) responsive to rotation of guide members
36
,
38
. Media
50
can comprise paper, envelopes, transparencies, etc. The depicted media
50
comprises a sheet of paper having edges
52
,
54
. During travel along media path
24
, edge
52
is a leading edge and edge
54
is a trailing edge.
FIG. 3
illustrates the initial movement of media
50
within media handling device
14
. Sensor
34
initially detects the presence of media
50
following passage of edge
52
of media
50
through input
20
and over sensor
34
. Guide member
40
is provided in the first or initial position as shown during reception of media
50
within media handling device
14
.
Referring to
FIG. 4
, guide member
40
is illustrated being lowered towards guide
42
. Responsive to detection of leading edge
52
by sensor
34
, a motor (shown in
FIG. 8
) is controlled to lower guide member
40
towards the second position adjacent guide member
42
. The rotational speed of guides
36
,
38
can be increased following detection of media
50
by sensor
34
.
Referring to
FIG. 5
, guide member
40
is illustrated in the second position (position
41
of
FIG. 2
) adjacent guide member
42
. Guide assembly
30
defines a nip
56
to receive media
50
during positioning of moveable guide member
40
in position
41
. Following the passage of edge
54
of media
50
out of guide assembly
28
, flap
48
may be driven by a motor (not shown) in a downward direction towards media
50
. Although not shown, a sensor may be provided on a downstream side of guide assembly
28
to monitor the exit of edge
54
from guide assembly
28
.
Referring to
FIG. 6
, such downward movement of flap
48
guides media
50
to media path
26
and guide assembly
32
. Following the appropriate positioning of media
50
using flap
48
, the direction of rotation of guide member
42
is reversed to direct media
50
towards guide assembly
32
. The direction of rotation of guide member
42
is reversed after a sufficient stabilization period of time following the reception of media
50
along media path
24
within nip
56
. Guide member
42
directs media
50
into a nip
58
defined by guide members
44
,
46
of guide assembly
32
.
Referring to
FIG. 7
, guide members
44
,
46
are driven to pass media
50
along media path
26
towards output
22
. Media
50
is passed to media device
16
(
FIG. 1
) following passage through output
22
. The direction of media
50
from input
20
along media paths
24
,
26
to output
22
flips the orientation of media
50
.
Following passage of media to guide assembly
32
, guide member
40
is raised towards the initial position of guide member
40
shown in FIG.
3
. Additionally, flap
48
is raised along with guide member
40
to a position for receiving subsequent media along media path
24
.
Referring to
FIG. 8
, a controller
60
and a motor
62
are illustrated. In particular, controller
60
is coupled with sensor
34
and motor
62
. Motor
62
is additionally coupled with guide member
40
. In the depicted configuration, controller
60
comprises a microcontroller configured to execute firmware for controlling the operations of media handling device
14
. In the depicted configuration, motor
62
comprises a direct current (DC) motor. Motor
62
is driven by current controlled responsive to a control signal received from controller
60
.
As described further below, operations of controller
60
are provided for controlling guide member
40
using motor
62
. More specifically, controller
60
receives position information of media
50
from sensor
34
. Responsive to such position information, controller
60
can regulate motor
62
to control the movement of moveable guide member
40
intermediate the first position and the second position.
It is desired to reduce the acoustic noise of media handling device
14
during the movement of guide member
40
intermediate such first and second positions. Accordingly, controller
60
is configured to apply a control signal as described below to motor
62
to control the operation thereof and corresponding movement of guide member
40
.
In accordance with certain aspects of the invention, controller
60
is configured to modulate the control signal applied to motor
62
. As described further below, controller
60
is configured in one embodiment to selectively pulse width modulate the control signal applied to motor
62
. Controller
60
is configured to modulate the control signal during movement of guide member
40
in the described embodiment. At other times, controller
60
provides a substantially constant or steady state control signal to motor
62
.
In one embodiment, the application of the substantially constant control signal to motor
62
is responsive to guide member
40
being in one of the first position and the second position. Controller
60
is configured to detect a hard stop of moveable guide member
40
at one of the first position and the second position. Controller
60
then provides the constant control signal to motor
62
after detection of the hard stop.
Motor
62
applies a holding torque to guide member
40
responsive to reception of the constant control signal. Such is utilized to increase a normal force within nip
56
of guide assembly
30
to assist with the movement of media
50
during the positioning of guide member
40
in the second position. Additionally, if the modulated control signal fails to fully move guide member
40
to one of the first position or the second position, the subsequent constant control signal can urge or fully move guide member
40
to the appropriate first position or second position.
According to another aspect, controller
60
is configured to time the modulation of the control signal and to provide the substantially constant control signal after timing a predefined length of time. Such length of time is typically chosen to be of sufficient duration for guide member
40
to fully travel the distance intermediate the first position and the second position. Other control schemes utilizing a modulated control signal to control motor
62
are possible.
Different modulation schemes were utilized in experiments to tune the control of motor
62
. Table A below illustrates exemplary modulation schemes and corresponding operations of media handling device
14
.
TABLE 1
|
|
Downwards
Upwards
|
Downwards
speed at
Upwards
max speed
|
total time
contact
total time
at contact
|
|
|
25% duty
125 ms
13.87 Hz
|
cycle
|
50% duty
90 ms
24.5 Hz
108 ms
9.91 Hz
|
cycle
|
75% duty
56 ms
31.54 Hz
65.2 ms
17.95 Hz
|
cycle
|
Full current
49.4 ms
37.16 Hz
52.8 ms
28.12 Hz
|
|
Following experimentation, controller
60
is configured in one aspect to provide the following operation for controlling motor
62
. During movement of guide member
40
in a downward direction from the first position to the second position, controller
60
is configured to use a 25% duty cycle (5 ms timing) for approximately 150 ms. Following the timing of the predefined length of time (e.g., 150 ms), controller
60
applies a constant control signal to motor
62
to provide full current within motor
62
for application of the holding torque (increased normal force applied to media) during movement of media
50
out of guide assembly
30
to media path
26
. Such constant control signal also assures movement of guide member
40
into the second position.
Following the passage of media
50
to guide assembly
32
, guide member
40
is returned to the first position. During upwards movement from the second position to the first position of moveable guide member
40
, the control signal is modulated by controller
60
using a 50% duty cycle for approximately 150 ms. Following the timing of 150 ms, 100 ms of a constant control signal is applied to motor
62
to implement full current operation thereof. Such is utilized in one aspect to assure proper return of guide member
40
into the first position.
Referring to
FIG. 9
, a flow chart illustrates an exemplary method for controller
60
to control the movement of guide member
40
from the first position to the second position and vice versa. The method is implemented as executable code within the firmware of media handling device
14
according to one aspect. Alternatively, such methodology can be implemented within hardware in another configuration.
For movement of guide member
40
from the first position to the second position, controller
60
determines at step S
10
whether an initiate event has occurred. An exemplary initiate event is the detection of media within media handling device
14
. Sensor
34
is utilized to indicate such presence of media in the described embodiment. Controller
60
idles at step S
10
until media is detected.
Thereafter, controller
60
proceeds to step S
12
following the detection of the initiate event. At step S
12
, controller
60
issues or outputs a modulated control signal to motor
62
. The control signal may be modulated according to one of the exemplary schemes described above.
Controller
60
then proceeds to step S
14
to determine whether an intermediate event has been detected. In one aspect, controller
60
is configured to time a predefined time period comprising the intermediate event. Step S
14
is utilized in such a configuration to apply the modulated control signal to motor
62
for the predefined time period. The intermediate event comprises a hard stop detection of guide member
40
in the second position according to another aspect. Controller
60
proceeds to step S
16
responsive to the detection of an intermediate event.
At step S
16
, controller
60
outputs the constant control signal to motor
62
. Application of the constant control signal results in the application of a holding torque of guide member
40
to media
50
and guide member
42
.
Thereafter, controller
60
proceeds to step S
18
to monitor for the presence of a termination event. During application of the constant control signal with guide member
40
in the second position, an appropriate detection event can be an indication from a sensor that the media has been moved from guide assembly
30
. Another exemplary termination event is a timer (e.g., controller
60
) counting a predefined time period.
Following detection of the termination event with guide member
40
in the second position, controller
60
proceeds to step S
20
to de-assert the constant control signal to idle motor
62
.
Thereafter, controller
60
can re-execute the depicted method of the flow chart of
FIG. 9
to control the movement of guide member
40
from the second position back to the first position. The following describes execution of the depicted flow chart during movement of guide member
40
from the second position to the first position.
Controller
60
determines at step S
10
whether an initiate event has occurred. The initiate event is the passage of media from guide assembly
30
to guide assembly
32
according to one aspect. Controller
60
idles at step S
10
until the initiate event is detected.
Thereafter, controller
60
proceeds to step S
12
following the detection of the initiate event. At step S
12
, controller
60
issues or outputs a modulated control signal to motor
62
. The control signal may be modulated according to one of the exemplary schemes described above for providing upward movement of guide member
40
to return to the first position.
Controller
60
then proceeds to step S
14
to determine whether an intermediate event has been detected. In one aspect, controller
60
is configured to time a predefined time period comprising the intermediate event. Step S
14
is utilized in such a configuration to provide the application of the modulated control signal to motor
62
for the predefined time period. The intermediate event comprises a hard stop detection of guide member
40
in the first position according to another aspect. Controller
60
then proceeds to step S
16
responsive to the detection of an intermediate event.
At step S
16
, controller
60
outputs the constant control signal to motor
62
. The constant control signal can operate to kick or urge guide member
40
fully into the desired first position.
Thereafter, controller
60
proceeds to step S
18
to monitor for the presence of a termination event. During application of the constant control signal with guide member
40
in the first position, an exemplary termination event is the timing of a predefined period of time (e.g., 100 ms). Other termination events are possible.
Following detection of the termination event with guide member
40
in the first position, controller
60
proceeds to step S
20
to de-assert the constant control signal to idle motor
62
.
Thereafter, controller
60
returns to step S
10
in one configuration to await the detection of another initiate event (e.g., reception of new media) and to execute the depicted flow chart methodology again to provide movement of guide member
40
from the first position to the second position. The depicted flow chart is repeated during operation of media handling device
14
to continuously flip media.
Referring to
FIG. 10
, a timing diagram illustrates various operations of media handling device
14
. Time increases from left to right in the depicted timing diagram. Plural lines are illustrated in FIG.
10
. Line
70
illustrates the movement of motor
62
during the operation of media handling device
14
. Line
72
illustrates current within motor
62
during such operations. Line
74
illustrates an enable control signal issued by controller
60
to control the current within motor
62
. Line
76
illustrates a direction control signal of controller
62
to control motor
62
to control the direction of movement of guide member
40
intermediate the first and second positions. Guide member
40
is moved downward responsive to control signal
76
being asserted. Guide member
40
is moved upward responsive to control signal
76
being de-asserted.
The timing diagram is illustrated initially with guide member
40
in the first position. At time t
0
, an initiate event is detected by controller
60
of media handling device
14
. Such results in the application of a modulated control signal from controller
60
to motor
62
as represented by line
74
. At time t
1
, an intermediate event is detected (e.g., a predefined length of time has been timed) and the modulated control signal of line
74
is de-asserted.
Thereafter, application of a constant control signal as shown by line
74
provides a full current holding torque of motor
62
applied in a downward direction to urge guide member
40
fully to the second position.
At time t
2
, a termination event occurs (e.g., media has left guide assembly
30
for travel along the second media path
26
). In the described configuration, controller
60
thereafter re-executes the method of the flow chart and operates to again output a modulated control signal corresponding to line
74
to move guide member
40
upward towards the first position. The reader will note that signal
76
is de-asserted at time t
2
to provide upward movement to guide member
40
.
The modulated control signal represented by line
74
is outputted for a predefined length of time. Following the timing of the predefined length of time at time t
3
, a constant control signal is issued again by controller
60
as represented by line
74
to urge guide member
40
into the first position. Controller
60
times the application of the second constant control signal as represented by line
74
until a time t
4
.
Such timing of the predefined length of time corresponds to a termination event. Thereafter, controller
60
awaits the reception of subsequent media or other appropriate initiate event wherein the control signals may be issued again to motor
62
.
In compliance with the statute, the invention has been described in language more or less specific as to structural and methodical features. It is to be understood, however, that the invention is not limited to the specific features shown and described, since the means herein disclosed comprise preferred forms of putting the invention into effect. The invention is, therefore, claimed in any of its forms or modifications within the proper scope of the appended claims appropriately interpreted in accordance with the doctrine of equivalents.
Claims
- 1. A media handling device comprising:a housing having an initial media path; a moveable guide member positioned to guide media within the initial media path; a motor configured to selectively move the guide member intermediate a first position where the guide member is spaced from the media within the initial media path and a second position where the guide member contacts the media within the initial media path; and a controller configured to apply a control signal to the motor to control the motor and corresponding movement of the guide member, the controller being further configured to modulate the control signal at a first moment in time and to provide the control signal comprising a substantially constant control signal at a second moment in time.
- 2. The device according to claim 1 wherein the controller is configured to pulse width modulate the control signal.
- 3. The device according to claim 1 wherein the controller is configured to modulate the control signal during movement of the guide member.
- 4. The device according to claim 1 wherein the controller is configured to provide the substantially constant control signal responsive to the guide member being in one of the first position and the second position and the motor is configured to apply a holding torque to the guide member responsive to the substantially constant control signal.
- 5. The device according to claim 1 wherein the controller is configured to time the modulation of the control signal and to provide the substantially constant control signal to the motor after timing a predefined length of time.
- 6. The device according to claim 1 wherein the controller is configured to provide the substantially constant control signal to the motor after a hard stop of the guide member.
- 7. The device according to claim 1 wherein the housing defines another media path, and the guide member is configured to selectively direct the media within the initial media path to the another media path to flip the media.
- 8. A media handling device comprising:a housing having a first media path and a second media path; an input configured to provide media into the first media path; an output configured to output media from the second media path; a moveable guide member configured to direct the media from the first media path to the second media path to flip the media; a motor configured to move the guide member intermediate a first position where the guide member is spaced from the media within the initial media path and a second position where the guide member contacts the media within the initial media path; and a controller configured to apply a control signal to the motor to control the motor and corresponding movement of the guide member, the controller being further configured to modulate the control signal at a first moment in time and to provide the control signal comprising a substantially constant control signal at a second moment in time.
- 9. The device according to claim 8 wherein the controller is configured to pulse width modulate the control signal.
- 10. The device according to claim 8 wherein the controller is configured to modulate the control signal during movement of the guide member.
- 11. The device according to claim 8 wherein the controller is configured to provide the substantially constant control signal responsive to the guide member being in one of the first position and the second position and the motor is configured to apply a holding torque to the guide member responsive to the constant control signal.
- 12. The device according to claim 8 wherein the controller is configured to time the modulation of the control signal and to provide the substantially constant control signal to the motor after timing a predefined length of time.
- 13. The device according to claim 8 wherein the controller is configured to provide the substantially constant control signal to the motor after a hard stop of the guide member.
- 14. A media handling method comprising:providing a media handling device having an initial media path; selectively moving a guide member using a motor intermediate a first position where the guide member is spaced from media within the initial media path and a second position where the guide member contacts the media within the initial media path; and applying a control signal to the motor to control the moving, the applying comprising applying the control signal comprising a modulated signal at a first moment in time and applying the control signal comprising a substantially constant signal at a second moment in time.
- 15. The method according to claim 14 wherein the applying the control signal comprising the modulated signal comprises applying the control signal comprising a pulse width modulated signal.
- 16. The method according to claim 14 wherein the applying comprises applying the modulated signal during the moving.
- 17. The method according to claim 14 wherein the applying comprises applying the substantially constant control signal to the motor during placement of the guide member within at least one of the first position and the second position.
- 18. The method according to claim 14 further comprising timing the applying the modulated signal, and wherein the applying comprises applying the substantially constant control signal to the motor after timing a predefined length of time.
- 19. The method according to claim 14 wherein the applying comprises applying the substantially constant control signal after a hard stop of the guide member.
- 20. The method according to claim 14 wherein the providing comprises providing the media handling device having another media path and further comprising guiding the media within the initial media path to the another media path to flip the media.
- 21. A media handling device comprising:a housing having an initial media path; a moveable guide member positioned to guide media within the initial media path; a motor configured to selectively move the guide member intermediate a first position where the guide member is spaced from the media within the initial media path and a second position where the guide member contacts the media within the initial media path; and a controller configured to apply a control signal to the motor to control the motor and corresponding movement of the guide member, the controller being further configured to modulate the control signal and to provide a substantially constant control signal responsive to the guide member being in one of the first position and the second position and the motor is configured to apply a holding torque to the guide member responsive to the control signal.
- 22. A media handling device comprising:a housing having an initial media path; a moveable guide member positioned to guide media within the initial media path; a motor configured to selectively move the guide member intermediate a first position where the guide member is spaced from the media within the initial media path and a second position where the guide member contacts the media within the initial media path; and a controller configured to apply a control signal to the motor to control the motor and corresponding movement of the guide member, the controller being further configured to modulate the control signal and to time the modulation of the control signal and to provide a substantially constant control signal to the motor after timing a predefined length of time.
- 23. A media handling device comprising:a housing having a first media path and a second media path; an input configured to provide media into the first media path; an output configured to output media from the second media path; a moveable guide member configured to direct the media from the first media path to the second media path to flip the media; a motor configured to move the guide member intermediate a first position where the guide member is spaced from the media within the initial media path and a second position where the guide member contacts the media within the initial media path; and a controller configured to apply a control signal to the motor to control the motor and corresponding movement of the guide member, the controller being further configured to modulate the control signal and to provide a substantially constant control signal responsive to the guide member being in one of the first position and the second position and the motor is configured to apply a holding torque to the guide member responsive to the constant control signal.
- 24. A media handling device comprising:a housing having a first media path and a second media path; an input configured to provide media into the first media path; an output configured to output media from the second media path; a moveable guide member configured to direct the media from the first media path to the second media path to flip the media; a motor configured to move the guide member intermediate a first position where the guide member is spaced from the media within the initial media path and a second position where the guide member contacts the media within the initial media path; and a controller configured to apply a control signal to the motor to control the motor and corresponding movement of the guide member, the controller being further configured to modulate the control signal and to time the modulation of the control signal and to provide a substantially constant control signal to the motor after timing a predefined length of time.
- 25. A media handling method comprising:providing a media handling device having an initial media path; selectively moving a guide member using a motor intermediate a first position where the guide member is spaced from media within the initial media path and a second position where the guide member contacts the media within the initial media path; applying a control signal to the motor to control the moving; modulating the control signal; timing the modulation; and applying a substantially constant control signal to the motor after the timing.
US Referenced Citations (10)