Typewriting machines – Typing by other than type-face or type-die – Thermal
Reexamination Certificate
2000-01-27
2002-10-15
Hirshfeld, Andrew H. (Department: 2854)
Typewriting machines
Typing by other than type-face or type-die
Thermal
C400S283000, C400S335000
Reexamination Certificate
active
06464416
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an apparatus having a carriage scanning mechanism for reciprocally scanning a carriage, and a recording apparatus, an information recording/reproducing apparatus, an information recording apparatus, an information reproduction apparatus, an information reading apparatus and an information erasing apparatus, provided with the apparatus including the carriage scanning mechanism.
2. Related Background Art
For most of the conventional apparatuses that perform recording/reproducing/reading using a head mounted on a carriage, in synchronization with the reciprocal displacement of the carriage in the main body of the apparatus, a motor fixed to the main body of the apparatus exerts a driving force that is transmitted to the carriage by a timing belt and that reciprocally moves the carriage.
CONVENTIONAL EXAMPLE 1
FIG. 19
is a diagram illustrating the arrangement of a conventional serial recording apparatus.
In
FIG. 19
, rotatably mounted in an apparatus main body
100
is a paper feed roller
111
, which is rotated by a paper feed motor
112
, that is employed to feed a recording sheet
113
. In order for the recording sheet
113
to be conveyed, follow-up rollers
114
press it against the paper feed roller
111
.
Both ends of a guide shaft
103
and an auxiliary guide shaft
105
, which are so positioned that they lie perpendicular to the direction in which the recording sheet
113
is conveyed, are fixed to the apparatus main body
100
. And securely bonded to a slider
104
and an auxiliary slider
106
that, respectively, slidably engage the guide shaft
103
and the auxiliary guide shaft
105
is a carriage
102
on which recording means
101
is mounted. The recording means
101
is, for example, a type of ink-jet.
A carriage motor
107
, which is fixed to the apparatus main body
100
and which has a pulley
108
securely fitted around its output shaft, is located at one end of the guide shaft
103
, and an idle pulley
109
is rotatably secured at the other end. And fitted around the idle pulley
109
and the pulley
108
is a timing belt
110
, one part of which is fixed to the carriage
102
.
In addition, provided for the apparatus main body
100
is a controller
115
, which is connected to the carriage motor
107
by a lead line
117
and to the paper feed motor
112
by another lead line (not shown). The controller
115
is also connected by a flexible print board
116
to the recording means
101
that is mounted on the carriage
102
. With this arrangement, the controller
115
drives or controls the carriage motor
107
, the paper feed motor
112
and the recording means
101
.
It should be noted that a stepper motor having at least two phases may be employed as the carriage motor
107
because it provides superior control at a lower cost than does a common direct-current motor.
In Japanese Laid-Open Patent Application No. 53-82523, an apparatus for driving the carriage is disclosed wherein a motor is provided for the main body, and a wire that is fitted around a pulley, which is securely fitted around the output side of the motor, is guided by a rotary pulley that is attached to the main body.
In Japanese Laid-Open Patent Application No. 61-202875, a mechanism is disclosed wherein a motor is attached to a carriage, and is driven by a pinion gear that is fitted around the output shaft of the motor and that engages a rack that is provided for the main body.
CONVENTIONAL EXAMPLE 2
In Japanese Laid-Open Patent Application No. 7-302307 or No. 10-269330, an information recording/reproducing apparatus is disclosed wherein an optical card, which is a card-shaped information recording medium, is mounted on a mounting table that serves as a carriage, and the mounting table is displaced relative to an optical head, which is a recording/reproducing head, so that information recording/reproducing is performed.
The conveying means used for this apparatus employs a transmission system, which includes an endless timing belt that transmits, to the mounting table, the driving force produced by a motor fixed to a main body, that moves the mounting table relative to the optical head. During this process, information recording/reproducing is performed by the optical head.
FIG. 20
is a diagram showing the specific arrangement of this conveying means.
In
FIG. 20
, information recording tracks are formed on an optical card
200
at intervals of several &mgr;m. The optical card
200
is a card-shaped information recording medium for which, to perform information recording/reproducing, a spot having a diameter of several &mgr;m is formed by projecting a light beam between the tracks. The optical card
200
is mounted on a mounting table
201
.
A guide shaft
202
is fixed at both ends to the main body, and a slider
203
, which is securely bonded to the mounting table
201
, slidably engages the guide shaft
202
. An auxiliary guide shaft
204
is fixed at both ends to the main body, and is positioned so that it is parallel to the guide shaft
202
. An auxiliary slider
205
, which is securely bonded to the table
201
, slidably engages the auxiliary guide shaft
204
.
Further, a motor
206
is fixed to the main body; a pulley
207
is fitted around the output shaft of the motor
206
; an idle pulley
208
is rotatably fixed to the main body; and a timing belt
209
that is fitted around the idle pulley
208
and the pulley
207
is partially secured to the table
201
. A controller
216
is attached to the main body.
Optical detection devices
210
and
211
are attached to the main body to detect the position of a photointerrupter. Flexible print boards
212
and
213
electrically connect the optical detection devices
210
and
211
to the controller
216
. A light shielding plate
214
is integrally formed with the mounting table
201
and detects its position in conjunction with the optical detection devices
210
and
211
. And a lead line
215
is used to electrically connect the motor
206
and the controller
216
.
The controller
216
drives or controls the motor
206
and the optical detection devices
210
and
211
. The motor
206
rotates forward or backward to relatively displace the mounting table
201
and the optical card
200
in the directions indicated by an arrow G. It should be noted that as the motor
206
a two-phase stepper motor is employed because it provides superior control at a lower cost than does a common direct-current motor. To record/reproduce information, a light beam is emitted by an optical head
217
.
An apparatus disclosed in Japanese Laid-Open Patent Application No. 10-269330 employs, as a card-shaped information recording medium, an optical card on which an IC chip is mounted. On the mounting table, a power terminal, to which the IC chip on the optical card is connected, is provided that is electrically connected to a controller in the main body by a flexible print board.
CONVENTIONAL EXAMPLE 3
An information recording/reproducing apparatus that records/reproduces information relative to an optical disk comprises: a carriage, which moves in the direction of the diameter of the optical disk; and an optical head, which is mounted on the carriage. While the carriage is being moved, information is recorded on or reproduced from the optical disk. At this time, the position of the carriage is detected by position detection means (not shown), and control is provided for a drive actuator that drives the carriage.
This conveying means includes a lead thread that serves as one of the guide shafts for the carriage, and an internal threaded member that engages the lead thread and is provided in the carriage. To move the carriage, the lead thread is rotated by a motor in the main body.
This process will be specifically explained while referring to FIG.
21
. In
FIG. 21
, an optical disk
300
, a carriage
301
and a pickup
302
, which serves as an optical head, are provided. The pickup
302
includes a projection light source, a light-receiving device, and a lens for
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Hirshfeld Andrew H.
Nolan, Jr. Charles H.
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