Typewriting machines – Typing by other than type-face or type-die – Thermal
Patent
1993-03-01
1994-03-29
Burr, Edgar S.
Typewriting machines
Typing by other than type-face or type-die
Thermal
346 76PH, B41J 232
Patent
active
052978788
ABSTRACT:
A thermal head is moved in a sub scan direction relatively to a recording paper, the thermal head having a plurality of heating elements disposed along a main scan direction. The length of each heating element along the main scan direction is longer than its length along the sub scan direction. While the thermal head moves by a distance corresponding to the width of a picture cell, drive time of each heating element, in which each heating element is driven continuously or intermittently, is controlled to change the recording area of wax type ink dot transferred to the recording paper. Adjacent ink dots in the main scan direction are displaced by a predetermined distance in the sub scan direction. If a thermal head is intermittently moved by a unit movement amount, the unit movement amount is set smaller than the width of the heating element in order to achieve a high gradation. In printing a color image using at least three types of inks including cyan, magenta, and yellow, the recording positions of the color inks are displaced. In order to prevent hue change and color moire of an image, the picture cell density is set different in the sub scan direction at least between cyan and magenta.
REFERENCES:
patent: 4779102 (1988-10-01), Sasaki
patent: 4810111 (1989-03-01), Sogami et al.
patent: 4933686 (1990-06-01), Izumi et al.
patent: 4952085 (1990-08-01), Rein
patent: 4977410 (1990-12-01), Onuki et al.
patent: 5003323 (1991-03-01), Onuki et al.
Saito Hitoshi
Sato Masamichi
Sonoda Yasuko
Yamakawa Kenji
Bennett Christopher A.
Burr Edgar S.
Fuji Photo Film Co. , Ltd.
LandOfFree
Method of thermal wax transfer printing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of thermal wax transfer printing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of thermal wax transfer printing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-787312