EP0186212A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Printer with a motor controlled by chopping means
Assignee: Brother Industries Ltd
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Filing: 1985-12-27
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Granted: —
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Expires: 2005-12-27
Abstract
Abstract A printer in which a daisy wheel (20) on a carriage (8) is caused, by a hammer actuating mechanism (154), to impact againt a printing sheet fed by a sheet feed mechanism (159), so that the sheet is printed with use of a ribbon interposed between the sheet and the wheel. The hammer actuating mechanism, a printing ribbon feed mechanism (155), a correction ribbon feed mechanism (156), and a correction ribbon lift mechanism (157) constituting a first driven section, and the sheet feed mechanism constituting a second driven section, are connected to a single DC motor by means of clutch means of clutch means (160, 162, 163). In driving the first driven section, the motor is supplied with a predetermined supply voltage from an external power source. In driving the second driven section, the motor is supplied with a supply voltage chopped by chopping means (143) so that the second driven section is driven with a smaller driving force and at a lower rotating speed than the first driven section is.
Inventors
- 👤 Junji Shioda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 14:36
CPC Classifications
B; B41; B41J; B41J23/00; B41J23/02; B41J29/00; B41J29/38; B41J1/00; B41J1/22; B41J1/24; B41J1/26; B41J1/32; B41J1/36; B41J1/38; B41J2/00; B41J2/22; B41J2/31; B41J2/315; B41J2/32; B41J2/325; B41J9/00; B41J9/02; B41J9/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
208 words
A printer which comprises printing means (20, 24) opposed to a printing medium (P) to perform printing thereon, characterized by further comprising: a first driven section (154, 155, 156, 157) driven under a predetermined rotational load and at a predetermined rotating speed; a second driven section (150) driven under a smaller rotational load and at a lower rotating speed than the first driven section is; a single DC motor (81) supplied with a predetermined supply voltage; a transmission mechanism (169, 161, 162, 163) for selectively connecting the motor to the first and second driven sections, thereby transmitting the driving force of the motor to the first and second driven sections; chopping means (143) selectively connected to the motor to change the supply voltage to the motor, thereby reducing the driving force and rotating speed of the motor; and control means (140) for applying the predetermined supply voltage to the motor without connecting the chopping means to the motor when the motor is connected to the first driven section by means of the transmission mechanism, and for connecting the chopping means to the motor to apply a chopped supply voltage to the motor when the motor is connected to the second driven section by means of the transmission mechanism.
Claim 2
Dependent Claim
208 words
A printer which comprises printing means (20, 24) opposed to a printing medium (P) to perform printing thereon, characterized by further comprising: a first driven section (154, 155, 156, 157) driven under a predetermined rotational load and at a predetermined rotating speed; a second driven section (150) driven under a smaller rotational load and at a lower rotating speed than the first driven section is; a single DC motor (81) supplied with a predetermined supply voltage; a transmission mechanism (169, 161, 162, 163) for selectively connecting the motor to the first and second driven sections, thereby transmitting the driving force of the motor to the first and second driven sections; chopping means (143) selectively connected to the motor to change the supply voltage to the motor, thereby reducing the driving force and rotating speed of the motor; and control means (140) for applying the predetermined supply voltage to the motor without connecting the chopping means to the motor when the motor is connected to the first driven section by means of the transmission mechanism, and for connecting the chopping means to the motor to apply a chopped supply voltage to the motor when the motor is connected to the second driven section by means of the transmission mechanism.
Claim 3
Dependent Claim
31 words
The printer according to claim 1, characterized in that said second driven section includes a printing medium feed mechanism (150) having a platen (6) rotatable with the printing medium (P) thereon.
Claim 4
Dependent Claim
66 words
The printer according to claim 1, characterized in that said printing means includes a printing hammer (24), whereby printing is performed with use of a printing ribbon (R) interposed between the printing medium (P) and the printing means, and said first driven section includes a hammer actuating mechanism (154) for actuating the printing hammer and a printing ribbon feed mechanism (155) for feeding the printing ribbon.
Claim 5
Dependent Claim
37 words
The printer according to claim 3, characterized in that said transmission mechanism includes common clutch means (162) for selectively connecting the hammer actuating mechanism (154) and the printing ribbon feed mechanism (155) to the DC motor (81).
Claim 6
Dependent Claim
70 words
The printer according to claim 1, characterized in that said printer further comprises a correction ribbon (C) located in a printing position between the printing medium (P) and the printing means (20, 24), and said first driven section includes a correction ribbon feed mechanism (156) for feeding the correction ribbon and a correction ribbon lift mechanism (157) for lifting the correction ribbon from a rest position to the printing position.
Claim 7
Dependent Claim
38 words
The printer according to claim 5, characterized in that said transmission mechanism includes common clutch means (163) for selectively connecting the correction ribbon feed mechanism (156) and the correction ribbon lift mechanism (157) to the DC motor (81).
Claim 8
Dependent Claim
100 words
The printer according to claim 2, characterized in that said printing means (20, 24) is provided on a carriage (8) movable along and relatively to the platen (6), said first driven section (154, 155, 156, 157) is provided on the carriage, said DC motor (81) is supported on a frame (1) of the printer, and said transmission mechanism includes an operating shaft (113) extending parallel to the platen and rotatably supported on the frame so as to be operatively connected to the first driven section, and pulley-belt transmission means (161) for operatively connecting the operating shaft and the DC motor.
References Cited (Backward Citations)
No citation records indexed.
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