| ReturnTo Theme-Group-Choice | Onelevelup |
| 2C480 | Character spaces and line spaces in printers | |
| B41J19/00 -19/98 | ||
| B41J19/00-19/98 | CA | CA00 OBJECTIVES |
CA01 | CA02 | CA03 | CA04 | CA05 | CA06 | CA07 | CA08 | CA09 | CA10 |
| . Pitch and spacing between characters | . Pitch and spacing between lines (i.e., including number of line feeds) | . Variable pitch and spacing (i.e., including number of line feeds) | . . Proportional pitch and spacing | . . Line alignment, left end alignment, and uniform distribution | . . Printing of multiple character types | . . Pitch modifications in accordance with printing heads | . Dot density modifications | . Carriage position control | . Carriage stop position control | |||
| CA11 | CA12 | CA13 | CA14 | CA15 | CA16 | CA17 | CA18 | CA19 | CA20 | |||
| . Carriage speed control | . Home position determination | . Carriages fed at an angle | . Paper feed that takes advantage of the movement of the carriage return | . Paper feed with the carriage performing special movements | . Two-way printing (i.e., bidirectional printing) | . . Correction of errors in two-way printing | . . Two-way shortest distance printing | . . . Determination of the printing direction of the next line during printing | . . Switchover between one-way and two-way printing | |||
| CA21 | CA22 | CA23 | CA24 | CA25 | CA26 | CA27 | CA28 | CA29 | CA30 | |||
| . Backlash prevention (i.e., excluding two-way printing) | . Highlighted and bold printing | . Half-size character printing | . Incremental and sequential printing | . Flying printing | . Printing in the interval for carriage speed adjustment | . Printing when the carriage is stopped | . Deletion of characters | . Visual control | . Detection | |||
| CA31 | CA32 | CA33 | CA34 | CA35 | CA36 | CA37 | CA38 | CA39 | CA40 | |||
| . . Detection of the carriage position | . . Detection of the carriage feed quantity | . . Detection of the carriage speed | . . Detection of the carriage feed | . . Detection of the home position | . . Detection of the printing position | . . . Detection of the printing start position | . . . Detection of the margin position | . . . Detection of the printing end position | . . Detection of the paper position | |||
| CA41 | CA42 | CA43 | CA44 | CA45 | CA46 | CA47 | CA48 | CA49 | CA50 | |||
| . . Detection of the paper feed position | . . Detection of the paper feeding speed | . . Detection of the motor speed | . . Detection of the amount of motor shifting | . . Detection of temperature and humidity | . . Detection of errors | . Improvement of detection precision | . Noise reduction and noise prevention | . Vibration control | . . Controls having counterweights | |||
| CA51 | CA52 | CA53 | CA54 | CA55 | CA56 | CA57 | ||||||
| . Dust prevention | . Lubrication | . Functioning during abnormalities | . . Turning off of motors and electric power during abnormalities | . Variants having multiple heads | . Variants using multiple printing media (e.g., papers) | . Shuttle types | ||||||
| CB | CB00 COMPOSITIONS |
CB01 | CB02 | CB03 | CB04 | CB05 | CB06 | CB07 | CB08 | CB09 | CB10 | |
| . Variants having electromagnetic driving sources | . . Motors | . . . Pulse motors | . . . Linear motors | . . . Ultrasonic motors | . . Plungers | . . Variants having a common driving source | . . . Carriage drive and paper feed drive | . . . Carriage drive and ribbon feed drive | . Power transmission mechanisms | |||
| CB11 | CB12 | CB13 | CB14 | CB15 | CB16 | CB17 | CB18 | CB19 | CB20 | |||
| . . Gear mechanisms | . . . Planetary gears | . . . Intermittent gears | . . . Mechanisms whereby engagement of the gears can be intermittent | . . . Mechanisms whereby the driving gears and trailing gears are energized and engaged | . . Clutch mechanisms | . . . Unidirectional rotating clutches | . . . One-rotation clutches | . . Cams | . Electromagnetic damping devices | |||
| CB21 | CB22 | CB23 | CB24 | CB25 | CB26 | CB27 | CB28 | CB29 | CB30 | |||
| . Mechanical damping devices | . Detent mechanisms | . . Mechanisms that can be released | . . Electromagnetic mechanisms | . Barrier mechanisms | . Elastic elements | . . Coil springs | . . Plate springs | . . Rubber | . Sensors (i.e., detectors) | |||
| CB31 | CB32 | CB33 | CB34 | CB35 | CB36 | CB37 | CB38 | CB39 | CB40 | |||
| . . Photosensors | . . . Variants using shielding elements | . . Magnetic sensor | . . Encoders | . . . Linear encoders | . . Magnetic scales | . . Potentiometers | . . Switches | . . Variants whereby detected objects are equipped with multiple identical sensors | . . Installation of sensors | |||
| CB41 | CB42 | CB43 | CB44 | CB45 | ||||||||
| . . . Variants with variable positions for sensor installation | . Counters | . . Programmable counters | . . Measured objects | . Variants whereby materials other than carriage heads are recorded | ||||||||
| DA | DA00 CARRIAGE FEED MECHANISMS |
DA01 | DA02 | DA03 | DA04 | DA05 | DA06 | DA07 | DA08 | DA09 | DA10 | |
| . Belt driving mechanisms | . . Belt manufacturing methods | . . Belt materials | . . Belt shapes | . Wire driving mechanisms | . . Wire manufacturing methods | . . Wire materials | . Ways of stretching filament bodies | . . Variants whereby a belt is twisted | . . Three or more pulleys | |||
| DA11 | DA12 | DA13 | DA14 | DA15 | DA16 | DA17 | DA18 | DA19 | DA20 | |||
| . . Filament bodies provided with an angle | . . Variants whereby pulleys are arranged at an angle | . Means for providing tension to filament bodies | . Means for regulating the tension of filament bodies | . Installation structures for filament bodies | . . Installation on the pulleys and drums of filament bodies | . . Installation on the frames of filament bodies | . . Installation on the carriages of filament bodies | . . . Variants whereby installation materials are on carriages | . . Variants whereby installation elementss are on filament bodies | |||
| DA21 | DA22 | DA23 | DA24 | DA25 | DA26 | DA27 | DA28 | DA29 | DA30 | |||
| . . Variants using adhesion | . . Variants based on screws | . . Variants that push | . . Variants that are engaged with the teeth of a belt | . Screw shaft mechanisms | . . Mechanisms formed from multiple grooves | . . . Mechanisms whereby the depth of each groove varies | . Screw-feeding mechanisms | . . Screw and rack mechanisms | . Rack and pinion mechanisms | |||
| DB | DB00 CARRIAGE GUIDE MECHANISMS |
DB01 | DB02 | DB03 | DB04 | DB05 | DB06 | DB07 | DB08 | DB09 | DB10 | |
| . Carriage guiding means | . . Means using guide shafts engaged in carriages | . . Means using on guide shafts not inserted in carriages | . . Means using grooves | . . Others | . Carriage guiding means manufacturing methods | . Carriage guiding means materials | . Means of attaching guiding means to carriages | . . Bearings | . . Rollers | |||
| DB11 | DB12 | DB13 | DB14 | DB15 | DB16 | DB17 | ||||||
| . Installation of carriage guiding means to frames | . . Affixing to frames | . . Movable means with regard to frames | . . Means using springs | . . Means installed with screws | . . Means installed by penetrating the frame | . Means for regulating parallelism | ||||||
| EA | EA00 MOTOR CONTROL |
EA01 | EA02 | EA03 | EA04 | EA05 | EA06 | EA07 | EA08 | EA09 | EA10 | |
| . Speed control | . . Fixed speed control | . . . Multiple fixed speeds | . . . . Intermediate speeds during speed change transitions | . . Acceleration control | . . Deceleration control | . Position control | . Stop position control | . Prevention of motor vibration | . Prevention of undershooting and overshooting | |||
| EA11 | EA12 | EA13 | EA14 | EA15 | EA16 | EA17 | EA18 | EA19 | EA20 | |||
| . Handling fluctuations in the power source voltage and the electric current | . Handling variations in speed | . Handling print density | . Handling shifting distances | . . Rapid traverse when there are spaces in succession | . Handling printed character selection distances or times | . Handling loads | . Handling sagging in filament bodies | . Controls for improving response speed | . Varying controls during activation | |||
| EA21 | EA22 | EA23 | EA24 | EA25 | EA26 | EA27 | EA28 | EA29 | EA30 | |||
| . Motor control methods | . . Feedback control | . . . Variants that alter gain | . . Digital control | . . Open-loop control | . . Variants that remember speed curves | . . Control by means of input current voltage or power | . . Control of turning on and off | . . Pulse motor control | . . . Control of switching exitation as a function of conditions | |||
| EA31 | EA32 | |||||||||||
| . . . Retention of a specific excitation phase during stoppage | . . . Control by storing specific excitation phases in memory | |||||||||||
| EB | EB00 CARRIAGE FEED AND POSITION CONTROL |
EB01 | EB02 | EB03 | EB04 | EB05 | EB06 | EB07 | EB08 | EB09 | EB10 | |
| . Carriage position control | . . Forced stopping of carriages using stoppers | . . Carriage position management using counters | . Carriage home position control | . . Home position determination methods | . . . Determination at the time of power source input or start of printing | . . . Setting carriage speed at the time the home position is determined | . . . Home positions at a fixed distance from a specified position | . . Home positions under specified conditions | . One carriage return at the time of activation | |||
| EB11 | EB12 | EB13 | EB14 | EB15 | ||||||||
| . Centering the carriage under specified conditions | . Carriage return at a higher speed than when printing | . Rapid traverse of the carriage when there are spaces in succession | . Carriage stop position control | . . Consideration of inertia | ||||||||
| EC | EC00 PRINTING CONTROL |
EC01 | EC02 | EC03 | EC04 | EC05 | EC06 | EC07 | EC08 | EC09 | EC10 | |
| . Printing timing signal control | . . Formation of printing timing signals | . . . Generation based on counters | . . . Generation based on sensor output | . . Variants that alter printing timing | . . . Variants that alter printing timing in accordance with speed | . . . Variants that cause printing timing signals to be delayed | . . Variants that emit a printing timing signal after vibration convergence | . . Variants that emit a printing timing signal after the completion of printed character selection | . Printing position compensation | |||
| EC11 | EC12 | EC13 | EC14 | EC15 | EC16 | EC17 | ||||||
| . . Compensation and alteration methods | . . . Carriage positions shifted in advance for error compensation | . . . Compensation and alteration by shifting data in memory | . . . Compensation by management using carriage position counters | . . Variants that can alter compensation values | . . . Alteration of compensation values in accordance with carriage speed | . . . Alteration of compensation values in accordance with temperature | ||||||
| ED | ED00 VARIABLE PITCH CONTROL (E.G., BETWEEN CHARACTERS AND LINES) |
ED01 | ED02 | ED03 | ED04 | ED05 | ED06 | ED07 | ED08 | ED09 | ED10 | |
| . Control whereby the basic pitch can be altered using multiplication of a number other that a whole number | . . Variants that erase accumulated errors | . Control whereby the pitch is automatically set | . . Variants whereby the pitch is set from the remaining number of lines and the data yet to be printed | . Manual input of pitches | . Determination of the feasibility of printing at a set pitch | . Pitch alteration means | . . Pitches altered electrically | . . Pitches altered by means of sensors | . . Pitches altered mechanically |