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US 4,615,630 AGranted
Paper feeding control apparatus
AssigneeHitachi, Ltd.
InventorMikio Maeshima
Life of this patent
Estimating the term…
Abstract
An impact printer having a roll platen on which a continuous paper is set and fed by the rotation of the roll platen rotated by a first motor, and a cut sheet is fed on the continuous paper by a feeding mechanism which includes feed rollers rotated by a second motor. When information is printed on the cut sheet, a controller drives a second motor and a first motor so as to feed the cut sheet and the continuous paper in the same direction. Since the continuous paper is fed synchronously when feeding the cut sheet during printing on the cut sheet, print elements impact on different positions of the continuous paper and the roll platen. Accordingly, impact traces on specific areas of the continuous forms and wearing of specific areas of the platen are prevented.
Claims37
A paper feeding control apparatus in a printer, comprising:
- (a) a platen on which first paper is set;
- (b) a printing means facing said platen for printing information;
- (c) first means for feeding the first paper toward a predetermined direction when information is printed by the printing means on the first paper, and for feeding the first paper toward a reverse direction;
- and
- (d) second means separate from said first feeding means for independently feeding second paper partially contacting the first paper on said platen toward a predetermined direction, wherein said second feeding means feeds the second paper and said first feeding means feeds the first paper by a predetermined amount synchronously with the feeding of the second paper toward same direction when information is printed on the second paper by the printing means and said first means feeds the first paper in the reverse direction when information is not being printed.
2 more elements
A paper feeding control apparatus in a printer, comprising:
- (a) a platen;
- (b) printing means facing said platen for printing information;
- (c) first means for providing motive power to said platen for feeding a first paper toward a predetermined direction while the first paper is at least partially contacting the surface of said platen and for feeding the first paper toward a reverse direction when information is not being printed;
- (d) second means separate from said first means for feeding a second paper independently of the motive power for feeding the first paper, toward a predetermined direction between the first paper and said printing means;
- (e) first actuating means for causing said first feeding means to feed the first paper;
- (f) second actuating means independent from and unconnected to said first actuating means for causing said second feeding means to feed the second paper;
- and
- (g) control means for automatically designating feeding modes which include a first mode to feed the first paper and a second mode to feed the first paper and the second paper, and enabling said first actuating means in the first mode, and enabling both said first actuating means and said second actuating means synchronously with one another in the second mode, whereby said printing means is able to print information on said first paper during said first mode and to print information on said second paper during said second mode.
5 more elements
A paper feeding control apparatus in a printer, comprising:
- (a) a roll platen;
- (b) printing means facing said roll platen for printing information;
- (c) means for rotating said roll platen toward a predetermined direction while a first paper at least partially contacts the surface of said roll platen and thereby feeds the first paper and for rotating said roll platen toward a reverse direction;
- (d) means separate from said platen and rotating means for feeding a second paper independently of said rotating means toward a predetermined direction between the first paper and said printing means;
- (e) first actuating means for actuating said rotating means;
- (f) second actuating means separate from and unconnected to said first actuating means for actuating said feeding means independently of said first actuating means;
- and
- (g) control means for automatically designating feeding modes which include a first mode with said printing means able to print information on the first paper, and a second mode with said printing means able to impact on the first and the second paper while printing information on the second paper, driving said first actuating means during the first mode and synchronously driving both said first actuating means and said second actuating means during the second mode, and driving said first actuating means when information is not being printed and thereby actuating said rotating means to rotate said roll platen in the reverse direction.
5 more elements
A method for feeding paper in a printer, comprising:
- setting a first paper on a platen;
- feeding the first paper toward a forward direction by subjecting the platen to rotation when printing information on the first paper;
- feeding separately a second paper partially contacting the first paper on the platen, and feeding the first paper towards the same direction when printing information on the second paper, with the second paper being fed independently of the step of subjecting the platen to rotation;
- and
- feeding the first paper in a reverse direction when not printing information on the second paper.
2 more elements
A paper feeding method in an impact type printer, comprising:
- interpreting a control command with information to be printed to identify one of a plurality of printing modes including first and second printing modes indicated by the control command;
- using a rotation ratio between first and second motors so that the first motor rotates slower than the second motor during the second printing mode;
- rotating the first motor in a predetermined direction to feed a first paper during the first printing mode;
- detecting the presence of the second paper during the second printing mode;
- rotating the second motor in a predetermined direction to feed the second paper and simultaneously rotating the first motor in the same direction independently of the second motor to feed the first paper at a speed slower than the second paper during the presence of the second paper in the second printing mode;
- making a successive count of the rotation of the first motor during the second printing mode;
- and
- rotating the first motor backwards according to the count to feed the first paper backward after the printing on the second paper is finished.
5 more elements
A paper feeding control apparatus in a printer, comprising:
- a platen on which first paper is set, means for mounting said platen, and means for maintaining the paper against said platen;
- printing means facing said platen for printing information;
- first means for providing motive power to said platen for feeding the first paper toward a predetermined direction when information is printed on the first paper by said printing means;
- and for providing motive power to said platen for feeding the first paper toward a reverse direction;
- and
- second means separate from said first means for providing motive power independently from the provision of motive power for feeding the first paper, for feeding second paper partially contacting the first paper on said platen toward a predetermined direction, wherein said second feeding means feeds the second paper and said first feeding means feeds the first paper by a predetermined amount synchronously with the feeding of the second paper toward the same direction when information is printed on the second paper by the printing means, and said first means provides motive power to said platen for feeding the first paper in the reverse direction when information is not being printed.
3 more elements
A paper feeding control apparatus in a printer, comprising:
- a platen on which first paper is set, means for mounting said platen, and means for maintaining the paper against said platen;
- printing means facing said platen for printing information;
- first means for providing motive power to said platen for feeding the first paper toward a predetermined direction when information is printed on the first paper by said printing means and for providing motive power to said platen for feeding the first paper toward a reverse direction;
- and
- second means separate from said first means for providing motive power independently from the provision of motive power for feeding the first paper, for feeding second paper partially contacting the first paper on said platen toward a predetermined direction in correspondence with the first paper;
- and
- control means for enabling said first means in a first mode to cause said first means to advance the first paper, for enabling both said first means and second means in a second mode to respectively advance said first paper and said second paper synchronously in the same direction, and for enabling said first means when information is not being printed on said second paper to cause said first means to feed the first paper in the reverse direction.
4 more elements
A paper feeding control apparatus in a printer, comprising:
- control means for interpreting a control command with information to be printed to identify one of a plurality of printing modes including the first and second printing modes indicated by the control command;
- first and second motors;
- means for establishing a rotation ratio between said first and second motors whereby the first motor rotates slower than the second motor during the second printing mode;
- first means responsive to said control means for actuating the first motor to rotate in a predetermined direction to feed a first paper during the first and second printing modes, and for actuating the first motor to feed the first paper in a reverse direction;
- second means responsive to said control means for actuating the second motor to rotate in a predetermined direction to feed the second paper simultaneously with the rotation of the first motor during the second printing mode, said first actuating means being responsive to the rotation ratio to feed the first paper at a speed slower than the second paper during the second printing mode;
- and
- means for indicating the rotation of the first motor during the second printing mode;
- whereby after printing on the second paper, said first actuating means enables the first motor to feed the first paper in the reverse direction according to the indication.
5 more elements
Dependencies are inferred from the claim text.