Fluid ejection device

A printhead comprising:

• a firing chamber from which fluid is ejected;
• a first heating element disposed within said firing chamber, said first heating element configured to cause ejection of fluid having a first drop weight from said firing chamber;
• a second heating element disposed within said firing chamber, said second heating element configured to cause ejection of fluid having a second drop weight from said firing chamber,
• a voltage source electrically coupled in series with said first heating element and said second heating element, wherein said voltage source is configured to dynamically initiate said first heating element and said second heating element such that said fluid having said first drop weight is ejectable from said firing chamber at least one of substantially concurrently and separately from said fluid having said second drop weight;
• a first bore disposed within an orifice layer disposed proximate said first heating element, said first bore associated with said first heating element;
• and
• a second bore disposed within an orifice layer disposed proximate said second heating element, said second bore associated with said second heating element.

A replaceable printer component comprising:

• a substrate;
• a firing chamber coupled to said substrate;
• means for ejecting fluid disposed within said firing chamber, a first of said means for ejecting configured to cause fluid having a first drop weight to be ejected from said firing chamber, and a second of said means for ejecting configured to cause fluid having a second drop weight to be ejected from said firing chamber;
• a first bore disposed within an orifice layer disposed proximate to said first means for ejecting, said first bore associated with said first means for ejecting;
• a second bore disposed within said orifice layer disposed proximate to said second means for ejecting, said second bore associated with said second means for ejecting;
• and
• means for causing said first of said means for ejecting to be initiated at least one of individually or substantially concurrently with said second of said means for ejecting.

A method of manufacturing a fluid ejection device comprising:

• forming a first drop ejector to be associated with a firing chamber, said first drop ejector for causing fluid having a first drop weight to be ejected from said firing chamber;
• forming a second drop ejector to be associated with said firing chamber, said second drop ejector for causing fluid having a second drop weight to be ejected from said firing chamber,
• forming a first bore associated with said first drop ejector;
• forming a second bore associated said second drop ejector;
• and
• electrically coupling a first heating element of said first drop ejector in series with a second heating element of said second drop ejector and with a voltage source configured to dynamically initiate said first drop ejector and said second drop ejector such that said fluid having said first drop weight is ejectable from said firing chamber at least one of substantially concurrently and separately from said fluid having said second drop weight.