Printer for rear surface of printing sheet

Abstract

Abstract PURPOSE:To eliminate impact printing and to avoid a reduction in the sensitivity of a printing sheet by providing a transfer roller for press-transferring printing ink to be pressed to an outer periphery to the rear surface of the sheet by print typing means. CONSTITUTION:Print information of an image is transmitted from a controller, not shown, to a print typing head 28 corresponding to the image exposed by exposure means 14 in advance in a printing unit 22, and the head 28 types a necessary printing character. The typed character is applied to the front surface of a transfer roller 26 as a typing ink character through an endless ink ribbon 34. Further, the roller 26 is rotated approx. 1/2 revolution to press- transfer the applied printing ink character to the rear surface of the printing sheet P. Thus, after it is developed, though the sheet P has the character on its rear surface, an impact pressure is not applied. Accordingly, a reduction in the sensitivity of the photosensitive material does not occur, and a clear image is obtained on the surface of the material.

Inventors

• 👤 Takashi Imamura
• 👤 孝 今村

Bibliographic Details