Method for synchronizing print start positions for an inkjet printer carriage

A method for synchronizing the print start position for a printer carnage on an inkjet printer comprising the steps of:

• (a) providing an encoder signal indicative of a position of an inkjet printer carriage relative to one of a substrate being printed upon and a printer platen, the encoder signal being an alternating voltage signal with an encoder signal frequency;
• (b) filtering and dividing the encoder signal to provide a fire pulse signal, the fire pulse signal being an alternating voltage signal with a fire pulse signal frequency that is a multiple of the encoder signal frequency;
• (c) detecting a rising edge of the encoder signal preceding a predetermined print start position of the printer carriage relative to the one of the substrate being printed upon and the printer platen;
• (d) upon detection of the rising edge of the of the encoder signal in step (c), detecting a next falling edge of the fire pulse signal;
• (e) upon detection of the next falling edge of the fire pulse signal in step (d), detecting a count of the next rising edges of the fire pulse signal;
• and
• (f) assigning a synchronized print start position at an end of the count.

A method for synchronizing the print start position for a printer carriage on an inkjet printer comprising the steps of:

• (a) providing an encoder signal indicative of a position of an inkjet printer carriage relative to one of a substrate being printed upon and a printer platen;
• (b) filtering the encoder signal by a first filter to provide an intermediate encoder signal;
• (c) filtering the intermediate encoder signal by a second filter to provide a filtered encoder signal;
• (d) detecting an activation in the encoder signal preceding a predetermined print start position of the printer carriage relative to the one of the substrate being printed upon and the printer platen;
• (e) upon detection of the activation in the of the encoder signal in step (d), detecting a next deactivation of the intermediate encoder signal;
• (f) upon detecting the next deactivation of the intermediate encoder signal in step (e), detecting a first count of the next activations of the intermediate encoder signal;
• (g) at an end of the first count, detecting a next deactivation of the filtered encoder signal;
• (h) upon detecting the next deactivation of the filtered encoder signal in step (g), detecting a second count of the next activations of the filtered encoder signal;
• and
• (i) assigning a synchronized print start position at an end of the second count.

A method for synchronizing the print start position for a printer carriage on an inkjet printer comprising the steps of:

• (a) providing an encoder signal indicative of a position of an inkjet printer carriage relative to one of a substrate being printed upon and a printer platen, the encoder signal being an alternating voltage signal with an encoder signal frequency;
• (b) filtering and dividing the encoder signal to provide an intermediate encoder signal, the intermediate encoder signal being an alternating voltage signal with an intermediate encoder signal frequency that is a multiple of the encoder signal frequency;
• (c) filtering and dividing the intermediate signal to provide a fire pulse signal, the fire pulse signal being an alternating voltage signal with a fire pulse signal frequency that is a multiple of the intermediate signal frequency;
• (d) detecting a rising edge of the encoder signal preceding a predetermined print start position of the printer carriage relative to the one of the substrate being printed upon and the printer platen;
• (e) upon detection of the rising edge of the of the encoder signal in step (d), detecting a next falling edge of the intermediate encoder signal;
• (f) upon detection of the next falling edge of the intermediate encoder signal in step (e), detecting a first count of the next rising edges of the intermediate encoder signal;
• (g) at an end of the first count, detecting a next falling edge of the fire pulse signal;
• (h) upon detection of the next falling edge of the fire pulse signal in step (g), detecting a second count of the next rising edges of the fire pulse signal;
• and
• (i) assigning a synchronized print start position at an end of the second count.