Printer

A printer for forming a toner image to be transferred onto a work piece, said printer comprising:

• a latent image roller including an outer peripheral image surface for being electrified to form an electrostatic latent image thereon,
• an image developing roller including an outer peripheral toner surface for holding thereon toner to be supplied onto the outer peripheral image surface so that the electrostatic latent image is developed by the toner to form the toner image, and
• a motor for driving the latent image roller and the image developing roller,
• wherein the printer further comprises an intermediate rotational member connected to the motor to be rotationally driven by the motor and including a first teethed pulley and another rotational part mechanically connected to the image developing roller to drive the image developing roller so that an output torque of the motor is divided at the intermediate rotational member into a first part torque to be supplied to the first teethed pulley and a second part torque to be supplied to the image developing roller through the another rotational part, a second teethed pulley connected to the latent image roller to drive rotationally the latent image roller, and a teethed belt including teeth for engaging both the first and second teethed pulleys to drive rotationally the latent image roller by the first part torque, wherein the teeth of the teethed belt are formed of an elastomer.

A printer for forming a toner image to be transferred onto a work piece, said printer comprising:

• a latent image roller including an outer peripheral image surface for being electrified to form an electrostatic latent image thereon,
• an image developing roller including an outer peripheral toner surface for holding thereon toner to be supplied onto the outer peripheral image surface so that the electrostatic latent image is developed by the toner to form the toner image, and
• a motor for driving the latent image roller and the image developing roller,
• wherein the printer further comprises a coupling pair of a first coupling part including at least one pair of radially outer teeth, and a second coupling part including at least one pair of radially inner teeth, wherein the radially outer teeth and the radially inner teeth face each other radially and circumferentially and engage each other to transmit a torque generated by the motor to the latent image roller.

A printer for forming a toner image to be transferred onto a work piece, said printer comprising:

• a latent image roller including an outer peripheral image surface for being electrified to form an electrostatic latent image thereon,
• an image developing roller including an outer peripheral toner surface for holding thereon toner to be supplied onto the outer peripheral image surface so that the electrostatic latent image is developed by the toner to form the toner image, and
• a motor for driving the latent image roller and the image developing roller,
• wherein the printer further comprises a toner supplying member for urging the toner toward the image developing roller, and a clutch for controlling a torque transmission from the motor to the toner supplying member.

A printer for forming a toner image to be transferred onto a work piece, said printer comprising:

• a latent image roller including an outer peripheral image surface for being electrified to form an electrostatic latent image thereon,
• an image developing roller including an outer peripheral toner surface for holding thereon toner to be supplied onto the outer peripheral image surface so that the electrostatic latent image is developed by the toner to form the toner image, and
• a motor for driving the latent image roller and the image developing roller,
• wherein the printer further comprises an elastomer element through which the latent image roller is driven by the motor.