Abstract: An ointment base which comprises:(a) a hydrogel formed by a water-soluble polymer and a material selected from the group consisting of water, a polyhydric alcohol and a mixture thereof;(b) a methacrylate copolymer selected from a group consisting of dimethylaminoethyl methacrylate/methyl methacrylate copolymer, ethyl methacrylate/chlorotrimethylammonium ethyl methacrylate copolymer or a mixture thereof; and(c) a solubilizer which dissolves the methacrylate copolymer but is incompatible with water and the polyhydric alcohol,a weight ratio of the methacrylate copolymer to the solubilizer being 1:2-1:25.

Abstract: A printing apparatus includes a platen, a carriage, a guide member, and a carriage drive. A printing head is mounted on the carriage. The carriage can move in the axial direction of the platen, so that the printing head can print data on a sheet of paper set on the platen. The guide member guides the sheet of paper inserted in the gap between the platen and the guide member, into the gap between the platen and the printing head. The carriage driver moves the carriage to a predetermined position within a region opposing the central portion of the platen when no sheet of paper is detected to be set on the platen.

Abstract: There is provided an electronic cash register comprising a keyboard including a plurality of entry keys and a plurality of transaction keys; a data-storing circuit; a printer; and a data-processing circuit for supplying the data-storing circuit and printer with information represented by operation of keys on the keyboard. The electronic cash register further includes a switch provided to set the operation of the data-processing circuit at the "registration" mode and "tax set" mode. When entry keys are operated with the switch positioned for the "tax set" mode of the data-processing circuit, then desired tax information is stored in a tax memory, and when a tax key included in the transaction keys is depressed after the entry keys are operated with the switch positioned for the "registration" mode of the data-processing circuit, then tax information on a taxable amount stored in the data-storing circuit by operation of the entry keys is read out of the tax memory.

Abstract: An electronic cash register comprises a keyboard having a plurality of numeral entry keys and function keys, a drawer to be opened after the depression of a specified function key, a printer for printing on a blank receipt the data defined by operation of the entry keys and function keys, and a receipt feed device for feeding a blank receipt and taking out a printed receipt. The electronic cash register is further provided with a detection device and a receipt cutting device. The detection device detects the drawer-shutting and thus actuates the receipt cutting device when the drawer is shut.

Abstract: An electronic cash register comprises: a keyboard including a group of entry keys for entering input data representing the price of a merchandise item; a read only memory; a memory section including an entry data memory for temporarily storing the input data, a counter for counting number of the digits of the input data and a totalizer for accumulating the input data; a central processor unit coupled to the keyboard, the read only memory, the digit number counter, and the memory section; and prohibiting means for prohibiting registration of a specific input data with a digit number larger than a predetermined one. The keyboard further includes at least a release key for releasing the registration prohibition for such specific input data and the cash register further includes means for permitting at least one of the specific input data to be registered when the release key is actuated.