Method and apparatus for controlling serial printer

An apparatus for controlling a serial printer adapted for use with a DC motor, said serial printer including means for generating timing pulses in correspondence to a rotation of a character device having a plurality of selectable character groups, means for causing a carriage holding print means to consecutively move in a digit direction to print every digit, means for selecting a character group while printing a single line, means for starting the generation of the timing pulses upon start of the rotation of the character before completing the selection of the character group, and means for returning the carriage to a home position while utilizing movement of the carriage after a printing of a predetermined number of digits has been completed, said apparatus comprising:

• means for detecting a timing pulse interval;
• means for selecting a first digit character after a selection of a character group by counting a predetermined number of timing pulses to be generated during the character group selection;
• and
• means for setting the predetermined number of timing pulses so as to correspond to a value detected by the timing pulse interval detecting means.

An apparatus for controlling a serial printer adapted for use with a DC motor, said printer including means for generating timing pulses in correspondence to a rotation of a character device having a plurality of selectable character groups, means for causing a carriage holding print means to consecutively move in a digit direction to print every digit, means for selecting a character group while printing a single line, means for starting the generation of the timing pulses upon start of the rotation of the character device before completing the selection of the character group, and means for returning carriage to a home position while utilizing movement of the carriage after a printing of a predetermined number of digits has been completed, said apparatus comprising:

• means for detecting a timing pulse interval;
• means for selecting a first digit character after a selection of a character group by counting a predetermined number of timing pulses to be generated during the character group selection;
• and
• means for setting the predetermined number of timing pulses so as to correspond to a value detected by the timing pulse interval detecting means and to correspond to the selected character group.

A method for controlling a serial printer adapted for use with a DC motor, including means for generating timing pulses in correspondence to a rotation of a character device having a plurality of selectable character groups, means for causing a carriage holding print means to consecutively move in a digit direction to print every digit, means for selecting a character group while printing a single line, means for starting to generate the timing pulses upon start of the rotation of the character device before completion of the selection of the character group, and means for causing the carriage to return to a home position while utilizing movement of the carriage after printing of a predetermined number of digits has been completed, and means for controlling the printer, said controlling means comprising means for selecting a first digit character after a selection of a character group according to a number of timing pulses generated during the selection of the character group, and means for setting the predetermined number so as to correspond to the selected character group, said method comprising the steps of:

• selecting a first digit character to be printed in succession to a last line by counting a predetermined number of timing pulses to be generated during the carriage return;
• and
• setting the predetermined number of timing pulses so as to correspond to the character to be printed and the number of digits printed in the last line.

An apparatus for controlling a serial printer adapted for use with a DC motor, said serial printer including means for generating timing pulses in correspondence to a rotation of a character device having a plurality of selectable character groups, means for causing a carriage holding print means to consecutively move in a digit direction to print every digit, means for selecting a character group while printing a single line, means for starting the generation of the timing pulses upon start of the rotation of the character device before completing the selection of the character group, and means for returning the carriage to a home position while utilizing movement of the carriage after a printing of a predetermined number of digits has been completed, said apparatus comprising:

• means for detecting a timing pulse interval;
• means for selecting a first digit character after a selection of a character group by counting a predetermined number of timing pulses to be generated during the character group selection;
• and
• means for setting the predetermined number of timing pulses so as to correspond to a value detected by the timing pulse interval detecting means and to correspond to the selected character group, wherein a first digit character to be printed in succession to a last line is selected by counting a predetermined number of timing pulses to be generated during the carriage return, the number of timing pulses being set so as to correspond to the timing pulse interval detected.

An apparatus for controlling a serial printer adapted for use with a DC motor, said serial printer including means for generating timing pulses in correspondence to a rotation of a character device having a plurality of selectable character groups, means for causing a carriage holding print means to consecutively move in a digit direction to print every digit, means for selecting a character group while printing a single line, means for starting the generation of the timing pulses upon start of the rotation of the character device before completing the selection of the character group, and means for returning the carriage after a printing of a predetermined number of digits has been completed, said apparatus comprising:

• means for detecting a timing pulse interval;
• means for setting a predetermined number of timing pulses so as to correspond to a value detected by the timing pulse interval detecting means and the number of digits printed in the last line, the number of timing pulses being set so as to correspond to the timing pulse interval detected;
• and,
• means for selecting a first digit character after a selection of a character group by counting the predetermined number of timing pulses to be generated during the character group selection.

An apparatus for controlling a serial printer adapted for use with a DC motor, said serial printer including means for generating timing pulses in correspondence to a rotation of a character device having a plurality of selectable character groups, means for causing a carriage holding print means to consecutively move in a digit direction to print every digit, means for selecting a character group while printing a single line, means for starting to generate the timing pulses upon start of the rotation of the character device before completing the selection of the character group, and means for causing the carriage to return to a home position while utilizing movement of the carriage after printing of a predetermined number of digits has been completed, said apparatus comprising:

• means for measuring an ambient temperature of the serial printer;
• means for selecting a first digit character after a selection of a character group by counting a predetermined number of timing pulses to be generated during the selection of the character group;
• and
• means for setting the number of timing pulses so as to correspond to the ambient temperature measured by the temperature measuring means,
• wherein a first digit character to be printed in succession to a last line is selected by counting a predetermined number of timing pulses to be generated during the carriage return, and the number of timing pulses in response to correspond to the character to be printed and the ambient temperature measured by the temperature measuring means.

A serial printer, comprising:

• means for generating timing pulses in correspondence to a rotation of a character device having a plurality of selectable character groups;
• means for causing a carriage holding print means to consecutively move in a digit direction to print every digit;
• means for selecting a character group while printing a single line;
• means for starting the generation of the timing pulses upon start of the rotation of the character device before completing the selection of the character group;
• means for returning the carriage to a home position while utilizing movement of the carriage after a printing of a predetermined number of digits has been completed;
• and
• means for controlling the serial printer, said controlling means comprising means for detecting a timing pulse interval,
• means for selecting a first digit character after a selection of a character group by counting a predetermined number of timing pulses to be generated during the character group selection, and
• means for setting the predetermined number of timing pulses so as to correspond to a value detected by the timing pulse interval detecting means.

A serial printer, comprising:

• means for generating timing pulses in correspondence to a rotation of a character device having a plurality of selectable character groups;
• means for causing a carriage holding print means to consecutively move in a digit direction to print every digit;
• means for selecting a character group while printing a single line;
• means for starting to generate the timing pulses upon start of the rotation of the character device before completion of the selection of the character group;
• means for causing the carriage to return to a home position while utilizing movement of the carriage after printing of a predetermined number of digits has been completed;
• means for selecting a first digit character after a selection of a character group by a number of timing pulses generated during the selection of the character group;
• and
• means for setting the predetermined number so as to correspond to the selected character group.