JP2009045913A5

JP2009045913A5 -

Info

Publication number: JP2009045913A5
Application number: JP2007216794A
Authority: JP
Filing date: 2007-08-23
Publication date: 2010-08-12

Claims

In a printer that prints on printing paper,
A motor for conveying the printing paper and discharging and feeding the printing paper;
A paper conveying means for transmitting a driving force of the motor and discharging or conveying the printing paper;
A paper feeding means that is disposed upstream of the paper feeding means from the supply of the printing paper, to which the driving force of the motor is transmitted, and for sequentially feeding the printing paper;
A clutch mechanism that is interposed between the motor and the paper feeding means and switches between transmission and non-transmission of driving force to the paper feeding means;
Control information for formulating drive information for continuously driving the motor without stopping between the discharge of the printing paper and the heading and controlling the motor based on the drive information When,
A printer comprising:

The drive information is
A first section speed table that exists between the paper discharge and the paper feed, and has a predetermined acceleration unit, a constant speed unit, and a deceleration unit;
A constant speed region having a lower speed than the first section speed table, and a paper feed constant speed unit for driving the paper feed means;
A second zone speed table that exists between the end of the paper feed constant speed part and the target stop position, and has a predetermined acceleration part, a constant speed part, and a deceleration part;
The printer according to claim 1, further comprising:

The drive information includes two or more first section speed tables having different speeds of a constant speed part and two or more second section speed tables having different speeds of a constant speed part, and
The control means includes an actual driving distance from the start of paper discharge to the start of the paper feed constant speed unit,
When the first minimum driving distance is compared with the first minimum driving distance when the driving distance of the constant speed portion in the first section speed table is zero, and the condition that the first minimum driving distance is smaller than the actual driving distance is satisfied, The first section speed table is set to the constant speed part having the highest speed among the conditions,
The control means includes a second minimum driving distance when an actual driving distance from the end of the paper feed constant speed portion to the target stop position and a driving speed of the constant speed portion in the second section speed table are set to zero. When the condition that the second minimum driving distance is smaller than the actual driving distance is satisfied, the second section speed table is added to the constant speed portion having the largest speed among the conditions. Set,
The printer according to claim 2.

The control means adjusts the distance of the constant speed portion of the first section speed table according to the driving distance to the paper feed constant speed portion, and also adjusts the second distance according to the driving distance to the target stop position. 4. The printer according to claim 3, wherein the distance of the constant speed portion of the section speed table is adjusted.

Between the paper feeding means and the paper transport means, a paper detection means for detecting the printing paper is provided,
When the printing paper is detected by the paper detection means, the control means resets the second section speed table again so as to satisfy the condition, and the second section speed table is set according to the driving distance to the target stop position. Adjust the driving distance of the constant speed part of the two-section speed table again.
The printer according to claim 4.

The clutch mechanism includes a solenoid, and the on / off operation of the solenoid switches the driving force of the motor from a non-transmitting state to the paper feeding unit to a state of transmitting the driving force,
The clutch mechanism is
A gear member having a ratchet gear portion;
It is in contact with and away from the ratchet gear portion, and rotates integrally with the gear member when in contact with the ratchet gear portion, and idles with respect to the gear member when separated from the ratchet gear portion. An annular member having an engaging projection,
A trigger lever provided with a locking claw that engages with the engagement protrusion, and that can be rotated by turning on or off the solenoid to release the engagement between the engagement protrusion and the locking claw. When,
With
In a state where the engaging protrusion and the locking claw are engaged, the clutch claw is separated from the ratchet gear portion, and the driving force is not transmitted from the gear member to the annular member, and the driving force is not transmitted. In a state where the engagement protrusion and the locking claw are disengaged, the clutch claw is in contact with the ratchet gear portion, and the driving force is transmitted from the gear member to the annular member. Become
The printer according to any one of claims 1 to 5, wherein: