Control over print head driving parameters

A printer controller for a printer having at least one detachable print device comprising:

• means for receiving commands from an external device;
• and
• means responsive to the received commands for controlling a function of the printer according to characteristics of the at least one detachable print device,
• wherein said commands are capable of defining a parameter which is suitable for controlling the function of a new cartridge, which is not currently available for the printer, without changing of hardware of said control means,
• means for updating a stored parameter with the parameter.

A printer driver for a printer having at least one detachable print device comprising:

• means for sending commands to the printer for controlling a function of the printer according to characteristics of the at least one detachable print device;
• and
• means for transmitting image data to cause the printer to form an image based on a condition controlled by said commands,
• wherein said commands are capable of defining a parameter which is suitable for controlling the function of a new cartridge, which is not currently available for the printer, without changing a hardware of control means in the printer,
• means for updating a stored parameter with the parameter.

A printer controller for a printer having at least one detachable print device comprising:

• means for sending data representative of characteristics of the at least one detachable print device to an external device upon connection of the printer to the external device in an on-line-state;
• means for receiving commands from the external device;
• means responsive to the received commands for controlling a function of the printer according to the characteristics of the at least one detachable print device,
• wherein the received commands include parameters corresponding to the characteristics of the at least one detachable print device sent to the external device.

A printer controller for a printer having at least one detachable print device comprising:

• means for receiving commands from an external device in response to data representative of the characteristics of the at least one detachable print device are sent to the external device upon connection of the printer to the external device in an on-line-state;
• and
• means responsive to the received commands for controlling a function of the printer according to characteristics of the at least one detachable print device,
• wherein said commands are capable of defining a parameter which is suitable for controlling the function of a new cartridge, which is not currently available for the printer, without changing of hardware of said control means.

A printer driver for a printer having at least one detachable print device comprising:

• means for sending commands to the printer for controlling a function of the printer according to characteristics of the at least one detachable print device sent to the printer driver upon connection of the printer to the printer driver in an on-line-state;
• and
• means for transmitting image data to cause the printer to form an image based on a condition controlled by said commands,
• wherein said commands are capable of defining a parameter which is suitable for controlling the function of a new cartridge, which is not currently available for the printer, without changing a hardware of control means in the printer.