Minolta XG7 User Manual

5.
Shutter
Mechanism
{General
Description)
1.
The
shutter
of
XG
employs
only
electric
control
for
the
shutter
speed
control
and
2:
only
“X”
for
the
synchro
mechanism,
thus
making
its
mechanism
very
compact.
The
shutter
curtain
runs
laterally
and
the
curtain
shaft
employs
a
single
shaft
system.
Also,
an
OFF-type
trigger
contact
is
used
and
all
parts
are
set
up
into
one
unit.
A.
Charge
mechanism
1.
Winding
operation
causes charge
gear
A
(2105)
being
engaged
with
shutter
charge
gear
C
(3016)
on
body
side
to
rotate
in
the
direction
of
arrow.
As
charge
gear
B
(2104)
being
engaged
with
charge
gear
A
(2015)
rotates,
first
curtain
shutter
gear
(2106)
and
second
curtain
shutter
gear
(2107)
rotate
in
the
direction
of
arrow.
First
curtain
gear
(2135)
and
second
curtain
gear
(2129)
being
engaged
with
first
curtain
shutter
gear
(2106)
and
second
curtain
shutter
gear
(2107)
rotate
in
the
direc-
tion
of
arrow,
charging
the
1st
and
2nd
curtains.
Oo
the
other
hand,
control
cam
(2108)
is
rotated
for
charge
during
rotation
of
charge
gear
A
(2105)
in
the
direction
of
arrow.
Operation
of
control]
cam
(2108)
in
the
direction
of
arrow
causes
first
curtain
stop
lever
(0212)
to
be
released
so
that
the
stop
lever
can
rotate
by
its
spring
strength
in
the
direction
of
arrow
to
stop
the
first
curtain
shutter
gear.
. Further, control cam (2108) operates trigger contact operation lever (2173) in the
direction of arrow to turn on trigger contact (2166) and operate second curtain release
lever (0255) in the direction of arrow to press shutter magnet (2150) against shutter
magnet core (2149).
. Operation of second curtain release lever (0255) in the direction of arrow causes
second curtain lever (2160) and second curtain stop lever (0219) to be operated in the
direction of arrow by second curtain lever spring (2163) and second curtain stop lever
spring (2123). Then second curtain stop lever (0219) is able to stop second curtain
barrel.
. First curtain shutter gear (2106) is stopped by first curtain stop lever (0212), cont-
rol cam (2108) by control cam stop lever (2115) and second curtain barrel (2129) by
second curtain stop lever (0219). Shutter magnet core (2149) is pressed against shutter
magnet (2150) and then trigger contact (2166) is ON thus completing the charge.
. When the winding lever has returned to the original position, charge gear A (2105) and
B (2104) also return to the pre-charge positions, thus completing the preparations for
release.
B. Release mechanism
1.
When the shutter button is operated, the preset interlocking lever on the mirror box
side
operates
control
cam
stop
lever
(2115)
in
the
direction
of
dashed
line
just
before
the end of operation of the mirror preset system, thus releasing control cam (2108).
. Control cam (2108) is rotated in the direction of dashed line by the function of spring
to operate first curtain stop lever (0212) in the direction of dashed line thus releas-
ing it from first curtain shutter gear (2106), then it is rotated in the direction of
dashed line by the function of the first curtain spring, allowing the first curtain to
start running and exposure.
. Oo completion of counting at the electric circuit, the current to the magnet is cut off.
Shutter magnet core (2149) is released from shutter magnet, and magnet lever (0252)
is operated in the direction of dashed line by the function of spring. Then second
curtain release lever (0255), second curtain lever (2130) and second curtain stop lever
(0219) are operated in the direction of dashed line in order, allowing the second curtain
to start running to complete exposure.
\b

Minolta XG7 Specifications

General

Brand	Minolta
Model	XG7
Category	Digital Camera
Language	English