Browse Prior Art Database

Thermal Display Printer

IP.com Disclosure Number: IPCOM000080403D
Original Publication Date: 1973-Dec-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Kitamura, K: AUTHOR

Abstract

Thermal print head 4 comprises a plurality of thermal print elements, each of which is arranged with a heat generating area with a gap of lead line electrodes, as shown in Fig. 2. In printing a character, selected elements of head 4 defining a pattern of that character are energized to heat carbon ribbon 3 running in contact with head 4. The carbon on carbon ribbon 3 thus heated is fused, and a relief pattern of fused carbon corresponding to the character pattern to be printed is formed on ribbon 3. The relief pattern is then transferred to sheet 2 running in contact with ribbon 3, since sheet 2 has higher adhesion power than the base material of carbon ribbon 3. The fused carbon pattern transferred to sheet 2 is rapidly solidified on sheet 2.

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Thermal Display Printer

Thermal print head 4 comprises a plurality of thermal print elements, each of which is arranged with a heat generating area with a gap of lead line electrodes, as shown in Fig. 2. In printing a character, selected elements of head 4 defining a pattern of that character are energized to heat carbon ribbon 3 running in contact with head 4. The carbon on carbon ribbon 3 thus heated is fused, and a relief pattern of fused carbon corresponding to the character pattern to be printed is formed on ribbon 3. The relief pattern is then transferred to sheet 2 running in contact with ribbon 3, since sheet 2 has higher adhesion power than the base material of carbon ribbon 3. The fused carbon pattern transferred to sheet 2 is rapidly solidified on sheet 2. Carbon ribbon 3 thus bears the transparent pattern from Which carbon has been fused away and transferred to sheet 2.

As ribbon 3 continues to run in the direction of the arrow, the transparent pattern appears on the side facing illumination lamps 8, enabling the operator to verify the pattern transferred to sheet 2 by head 4. At this time, the carbon pattern transferred to sheet 2 passes beneath another thermal print head 5. If no error is indicated by visual verification, head 5 is energized to thermally transfer the carbon pattern on sheet 2 to print paper 1 disposed adjacent to back plate 7. If printing is not required, head 5 is not activated and the carbon pattern on sheet 2 can be erased by era...