Abstract: A receipt printer, a control method for a receipt printer, and a program whereby producing counterfeit printout is not possible. A receipt printer 20 has a storage unit 61 that stores encrypted information obtained by encrypting registered information, a specific information acquisition unit 62 that acquires specific information from a POS terminal 10, a comparison unit 63 that compares the specific information with the registered information decrypted from the encrypted information, a printing permission unit 64 the permits printing when the comparison unit 63 confirms a data match, and a printing unit 65 that prints when printing is permitted by the printing permission unit 64.

Abstract: A printer has a thermal print unit that prints by heating a thermochromic medium, an inkjet print unit that prints on the thermochromic medium, a remaining ink detection unit that detects the remaining ink level of the inkjet print unit, a halftone processing unit that converts acquired print data to thermal print data and inkjet print data, and a control unit that controls the thermal print unit and inkjet print unit based on the thermal print data and inkjet print data. The control unit causes the thermal print unit to print the inkjet print data when the detected remaining ink level is less than the amount of ink required to print the acquired inkjet print data.

Abstract: A receipt printer, a control method for a receipt printer, and a program whereby producing counterfeit printout is not possible. A receipt printer 20 has a storage unit 61 that stores encrypted information obtained by encrypting registered information, a specific information acquisition unit 62 that acquires specific information from a POS terminal 10, a comparison unit 63 that compares the specific information with the registered information decrypted from the encrypted information, a printing permission unit 64 the permits printing when the comparison unit 63 confirms a data match, and a printing unit 65 that prints when printing is permitted by the printing permission unit 64.

Abstract: A method and system are provided for a receipt printing device that produces receipts. Encrypted data is necessary to produce the receipt to prevent forgery of the receipt. The encrypted data based on information, which can be transaction information, received from a POS terminal. The encrypted data will be printed on the receipt only when determined to be necessary.

Abstract: A method and apparatus for measuring the crosstalk of an optical disc of an optical disc player adapted to reproduce signals recorded on the disc, in which there are concentrically or spirally formed continuous recorded signal strings or signal recording regions and in which there is provided a positioning aperture at the center of the disc substantially concentric with said recorded signal strings or signal recording regions. A light beam is wobbled at a predetermined amplitude in the direction along the radius of the optical disc. The wobbling period is set so as to be asynchronous with the period of the optical disc rotation. The ratio between the quantity of the traverse signal obtained by the optical pickup and the quantity of strays signals is measured as crosstalk.

Abstract: A device for inspecting the surface of a disc-shaped recording medium is provided. The inspection device is capable of performing track control unaffected by the widths of the land and the groove in the radial direction of the recording medium in inspecting the entire surface of a data recording region of the recording medium. The device has a spindle motor 1, an optical pickup 2 and a thread motor 3. While an output signal is supplied from a spot size control section 4b within a signal detection unit 4, two sub-beams are radiated from the optical pickup for tracking control. These sub-beams are radiated to the vicinity of the boundary region between the land sandwiched between the grooves where the light volume of the reflected light of the radiated light is minimized.

Abstract: In a liquid jet recording head having a liquid discharging conduit, the ratio of the average cross-sectional area of the conduit at the liquid introducing region to that at the energy actuating region is greater than 1.

Abstract: An ink jet recording head is constructed with a liquid droplet discharging device, a feeding path for supplying ink to the liquid droplet discharging device, and a flow path resistance adjusting section formed in one part of the ink feeding path to increase the flow path resistance in the ink feeding path due to a rise in temperature and to decrease the flow path resistance in the ink feeding path due to a fall in the temperature.

Abstract: An electronic compact function calculator of the invention has a keyboard including function keys, numeral/operation keys, and a graphic print key for accessing a graphic pattern of a desired function; a ROM storing graphic patterns of functions; and a display device or printer for displaying or printing the graphic pattern. The graphic representation of a function can be performed by a simple operation.

Abstract: A match head composition is prepared by blending the components of the composition with a binder and water, and wherein the combustion agent of the composition is cellulose nitrate powder wetted with more than 20 weight percent of water and having a particle size of less than 840 microns. The cellulose nitrate is mixed in the composition in an amount of not more than 10 weight percent (water-free basis).

Abstract: A match head composition is prepared by mixing and kneading the component agents of the composition with glue and water, characterized in that wetted powdery cellulose nitrate containing more than 20 percent of water and having grain size of less than 840 microns is mixed in the composition in an amount not more than 10 weight percent on dry weight standard.