Abstract: A printer, in which nozzles for printing dots are positioned in a zigzag formation, has a simple circuit for sending to these nozzles printing data that has been expanded into a bit-map image. When sending data to a print head in which odd-numbered nozzles and even-numbered nozzles are alternately positioned, the bit data of string n+l and the bit data of string n that correspond to respective nozzles inside image buffer 20 are converted from parallel to serial before being sent. Odd-numbered bit data and even-numbered bit data are then selected from the bit data using divided clock signals, and are converted from serial to parallel for printing.

Abstract: A point-of-sale (POS) terminal is provided with a control device for sending control and/or print data to a printing apparatus. The control device includes a general purpose processor controlled by a general purpose operating system and a control device connector for connecting the control device to the printing apparatus. The printing apparatus comprises a first connector connecting the printing apparatus to the control device through the control device connector. A second connector connects the printing apparatus to an external device. A processor for processes first data input from the first connector and second data input from the second connector. The first connector is in communication with the second connector. The POS terminal also comprises a housing including a first body frame for accommodating the printing apparatus and a second body frame for accommodating the control device, the first body frame being detachably mounted on the second body frame.

Abstract: A point-of-sale (POS) terminal is provided with a control device for sending control and/or print data to a printing apparatus. The control device includes a general purpose processor controlled by a general purpose operating system and a control device connector for connecting the control device to the printing apparatus. The printing apparatus comprises a first connector connecting the printing apparatus to the control device through the control device connector. A second connector connects the printing apparatus to an external device. A processor for processes first data input from the first connector and second data input from the second connector. The first connector is in communication with the second connector. The POS terminal also comprises a housing including a first body frame for accommodating the printing apparatus and a second body frame for accommodating the control device, the first body frame being detachably mounted on the second body frame.

Abstract: An optical record reproducing device including a movable optical system for moving along a radial direction of an optical disc, a separated optical system including a light source and a separated fixed optical system, a tracking control system having a reflective mirror for reflecting a laser beam irradiated from the light source toward the movable optical system and an accurate angular displacement mechanism including an angular displacement detector for directly detecting an angular displacement of the reflective mirror so as to control the movable optical system accuarately.