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Class Information
Number: 400/120.09
Name: Typewriting machines > Typing by other than type-face or type-die > Thermal > Density control
Description: Subject matter comprising a regulating means for controlling the amount of energy supplied to the recording means to maintain a uniform output on the record.

Sub-classes under this class:

Class Number Class Name Patents
400/120.15 By history of recording elements 17
400/120.1 By number of heated recording elements 29
400/120.13 By transfer material or record receiver 21
400/120.12 By voltage regulation 15
400/120.11 In accordance with output characteristic of recording elements 16
400/120.14 In accordance with temperature of the recording means 31

Patents under this class:
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Patent Number Title Of Patent Date Issued
8270027 Image forming apparatus capable of configuring print settings which have less influence on the environment, and method and program embodied in a computer readable recording medium for configur Sep. 18, 2012
8164607 Printing apparatus and method Apr. 24, 2012
8083310 Liquid droplet ejecting apparatus Dec. 27, 2011
7750930 Printing apparatus and method Jul. 6, 2010
7545401 Method and apparatus for controlling the uniformity of print density of a thermal print head array Jun. 9, 2009
7310106 Thermal printer and thermal printing method Dec. 18, 2007
7161718 Controller, image forming system, calibration control method, calibration control program, and memory medium storing therein calibration control program Jan. 9, 2007
6810814 Method for fabricating pattern, apparatus for fabricating pattern, conductive film wiring, method for fabricating device, electro-optical apparatus, and electronic apparatus Nov. 2, 2004
6732645 Method of presetting ink May. 11, 2004
6727932 Printer and printing method Apr. 27, 2004
6715945 Printing apparatus for performing quality control of printed paper sheet Apr. 6, 2004
6688788 Dot-matrix printer and printing method Feb. 10, 2004
6550380 Method for stencil plate making of stencil sheet for stencil printing Apr. 22, 2003
6491458 Printing system Dec. 10, 2002
6398433 Printing method for block copy film and block copy printer Jun. 4, 2002
6345920 Method of energy control in printing with transfer ribbon and direct thermo material in thermo-printers Feb. 12, 2002
6341905 Recording apparatus Jan. 29, 2002
6283648 Thermal head control circuit and thermal head control method permitting multicolor printing Sep. 4, 2001
6264382 Method of printing Jul. 24, 2001
6206588 Thermal printer Mar. 27, 2001
6164850 3D printing and forming of structures Dec. 26, 2000
6145962 Method and apparatus for printing Nov. 14, 2000
6146031 Method and apparatus for controlling a thermal printer head Nov. 14, 2000
6135655 Multipixel dots in monochrome drop-on-demand printing Oct. 24, 2000
6109799 Method of activating individually energizable elements in a thermal recording head Aug. 29, 2000
6102593 High speed print quality font modification Aug. 15, 2000
6092939 Printing apparatus and printing registration method Jul. 25, 2000
6089766 Auto-alignment system for a printing device Jul. 18, 2000
6076981 Printing apparatus and method of making mask pattern for exposure thereby Jun. 20, 2000
6048117 Network-based system for color calibration of printers Apr. 11, 2000
5988057 Postal cancellation machine Nov. 23, 1999
5961227 Thermal recording apparatus Oct. 5, 1999
5957593 Halftone pattern geometry for printing high quality images Sep. 28, 1999
5902053 Video printer having thermal head May. 11, 1999
5902054 Energy saving image edging method and device May. 11, 1999
5897255 Speed fonts for matrix printers Apr. 27, 1999
5896160 Thermal printing method and thermal printer Apr. 20, 1999
5886724 Method and apparatus for thermal recording Mar. 23, 1999
5868505 Printer apparatus Feb. 9, 1999
5841459 Color-to-color registration in thermal printers by adjusting image resolution based on image content Nov. 24, 1998
5841461 Accumulated heat correction method and apparatus Nov. 24, 1998
5833376 Method of activating individually energisable elements in a thermal recording head Nov. 10, 1998
5826994 Tape printing apparatus Oct. 27, 1998
5805312 Thermographical image copier system with real time copying and variable read and record speeds Sep. 8, 1998
5795082 Printing system utilizing inks of different densities, cartridge used therefor, and method of recording images Aug. 18, 1998
5765953 Control device of energy supply for heating elements of a thermal head and method for controlling energy supply for said heating elements Jun. 16, 1998
5741079 Printing apparatus and method of making mask pattern for exposure thereby Apr. 21, 1998
5677577 Reducing energy variations in thermal inkjet printers Oct. 14, 1997
5660486 Image printing apparatus and image printing method Aug. 26, 1997
5611630 Method and apparatus for securely printing a postal indicia image having a different dot density in two dimensions thereof Mar. 18, 1997

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