US3656169A - Method and apparatus for writing characters - Google Patents

Method and apparatus for writing characters Download PDF

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Publication number
US3656169A
US3656169A US38736A US3656169DA US3656169A US 3656169 A US3656169 A US 3656169A US 38736 A US38736 A US 38736A US 3656169D A US3656169D A US 3656169DA US 3656169 A US3656169 A US 3656169A
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US
United States
Prior art keywords
ink
recording
recording head
displacement
recording medium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US38736A
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English (en)
Inventor
Toshio Kashio
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Casio Computer Co Ltd
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Casio Computer Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Casio Computer Co Ltd filed Critical Casio Computer Co Ltd
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Publication of US3656169A publication Critical patent/US3656169A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/36—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for portability, i.e. hand-held printers or laptop printers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/28—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing downwardly on flat surfaces, e.g. of books, drawings, boxes, envelopes, e.g. flat-bed ink-jet printers

Definitions

  • control signals from the processor to the recording head are generated in response to the displacement signals generated by a signal generating means within the recording head is manually moved.
  • the present invention relates to a recorder used as an output equipment of an electronic computer and more particularly to a manual recording device of the type which synthesizes characters or the like each consisting of a dot pattern upon a recording medium by output signals, thereby recording the characters or the like.
  • a recording medium is generally fore upon a platen and a recording head such as type bar or type wheel is disposed in opposed relation with the recording medium. As the characters are printed or recorded, the recording medium is relatively moved with respect to the recording head. When one line of the printing or recording is finished, the recording medium is advanced forwardly.
  • the computers having a small memory capacity, especially desk top computers are like acounting machines and generally employ the bills as recording media. It will be therefore very convenient to provide a manual recording'head compact in size, easy to operate, and capable of automatically recording the results of arithematic operations upon any place upon the bills or registers by manually moving the recording head from left to right or right to left.
  • the recording device may be manually operated so that the characters or indicia may be printed or recorded upon any recording medium from any position.
  • control signals are applied from the processor to the recording device so compact in size and light in weight as to be manually operable, thereby to perform printing or recording of the characters.
  • the present invention can eliminate a complex mechanism with a higher degree of accuracy in operation for moving the recording medium horizontally across the printing or recording point and feeding it forwardly for each line of printing or recording of the characters.
  • the signal representative of the position or displacement of the recording device is generated by the signal generating means in response to the rotation or trip of the detection wheel so as to control the control signals to be transmitted from the processor, whereby the printing or recording operation for each character or the like may be controlled depending upon the roation or trip of the detection wheel irrespective of the velocity thereof.
  • the recording device is provided with a signal generating means which comprises a switch and an actuator responsive to the detecting wheel for energizing the switch to generating the signal representative of the position or displacement of the recording device.
  • the actuator is preferably in the form of wheel which has one or more of actuating means such as rachet teeth or magnets arranged around its periphery. With such arrangement, the position in which the initial character or the like is printed or recorded may be adjusted by utilizing the space width or spacing between two adjacent actuating means such as teeth or magnets of the wheel.
  • the actuator is coaxially carried between a pair of spaced apart detection wheels so that when the recording device is moved the characters or the like printed or recorded by the ink ejected from the emitter pass immediately below the actuator, whereby the printed or recorded characters or the like will remain clean because the actuator will not tread thereupon and the characters or the like may be printed or recorded precisely along the center line of the recording device in the direction of movement thereof.
  • the valve is provided in the recording device for controlling the ink fed from the exterior ink reservoir so that no ink will be supplied to the ink nozzle and drop or flow out of the nozzle tip when the printing or recording is not made.
  • an ink absorbing member is disposed forwardly of the ink nozzle tip so that the unrequited ink may be directed toward the abosorbing member so as to absorb the unrequired ink into this member.
  • the ink absorbing member When the ink absorbing member is saturated, it may be replaced. Therefor, even when the recording device is inclined or vibrated, the ink will not drop or flow out of the ink receiving member including the abovementioned ink absorbing member.
  • the present invention is based upon the discovery that an ink ejection or emission time interval of the order of 10 m.sec. is sufficient to emit the stream of ink magnetically, electrostatically or ultrasonically to print or record one character.
  • the term character means alphanumeric, symbol and many other representations. Therefore, when the size of one character to be printed or recorded is 3 X 3 mm and the manual recording device of the present invention is moved at a velocity of the order of 3 mm/ m.sec., the deformation error of the character printed or recorded in the direction of movement of the recording device may be 0.3 mm even without applying a bias voltage across the horizontal-deflection electrodes in order to correct the deformation of the character printed or recorded in the direction of movement of the recording device.
  • the printed or recorded character is not so different from the ordinary character. Furthermore, the printing velocity of 3 mm/lOO m.sec., that is 10 words per second is never slower than the manual writing velocity. It is not necessary to strictly maintain the velocity of 10 words per second and sometimes it is possible to increase this velocity when the characters printed are not so deformed. It would be also satisfactory even if the velocity is slower.
  • FIG. 1 is a perspective view partly in section of a first embodiment of a recording head of a recording device in accordance with the present invention
  • FIG. 2 is a perspective view with a part broken away of a second embodiment of the present invention.
  • FIG. 3 is an exploded perspective view of a practical recording head
  • FIG. 4 is a front view of an ink emitter of the inventive device.
  • FIG. 5 is a sectional view taken along the line X X of FIG. 4.
  • FIG. 1 illustrates one embodiment of the present invention.
  • an emitter 12 comprising a nozzle for directing a stream of ink, an acceleration electrode for accelerating the ink beam and horizontal and vertical deflection electrodes.
  • a voltage is applied to the acceleration electrode through a terminal a, and the horizontal and vertical deflection signals are applied to the horizontal and vertical deflection electrodes by means of the terminals b and c; and d and e respectively.
  • the leads to these terminals a e are formed into one cable 14 extending from a computer 13.
  • Ink is supplied from an ink reservoir 16 through a tube 15.
  • the emitter 12 is securely held in position upon the housing 11 by a belt 17.
  • a ratchet wheel 18 is so disposed as to actuate a switch 19 through its teeth so as to transmit a signal to the computer 13 so that the signals for tracing the characters one by one may be transmitted from the computer 13.
  • the ratchet wheel 18 is driven through a belt 21 and its pulley 22 by a tripmeter-wheel or detection wheel which rotates by the frictional force produced when it travels over a recording medium such as paper.
  • An opening 23 is formed through the bottom wall of the housing 11 so that the trip-meter-wheel 20 may extend beyond the bottom wall.
  • An opening 24 is also formed through the bottom wall so that the stream of ink emitted from the emitter 12 may reach the recording medium.
  • the switch 19 is mechanically actuated by the rachet wheel 18, but it should be noted that the switch may be actuated optically or magnetically by any form of actuator.
  • the actuator may be in the form of wheel which has magnets regularly arranged around its periphery, and in this case a ferreed switch is best suited for such actuator.
  • the ink reservoir 16 may be incorporated within the housing 11.
  • the recording medium such as paper is placed upon a support which is preferably grounded so that ink may be prevented from spraying over undesired areas upon the recording paper.
  • the recording device or head is manually displaced over the recording medium from any arbitary position at any desired speed.
  • the switch 19 is closed by the ratchet wheel 18 which in turn is driven by the belt 21.
  • the character tracing start signal is transmitted through a lead 25 to the computer 13 which in turn transmits the character tracing signals to the emitter through the cable 14, so that the stream of ink is directed toward the recording medium, thereby recording the contents of the computer upon the recording medium.
  • the trip-meter-wheel 20 serves not only to detect the displacement of the recording head but also to maintain a predetermined spacing between the exit of the nozzle of the emitter and the recording medium.
  • the recording device must be displaced from the right to the left in order to align the first digit of the characters along the right edges of the recording columns;
  • the nozzle exit must be located at the forward or leading end in the direction of the displacement of the recording head so that the characters being traced or drawn may be visually checked;
  • the recording device is not permitted to move backwardly so that the stability of character tracing or drawing operation will not be adversely affected.
  • FIG. 2 showing another embodiment wherein like parts are designated by like reference numerals 20 and 20 are trip-meter-wheels; 18, the
  • the ratchet wheel 19, a switch; 12, the emitter; and 24, a hole through which is directed the stream of ink from the emitter 12 toward the recording medium.
  • the ink supply pipe 15 is communicated with the ink reservoir 16.
  • a tube 27 contains the leads extending from the computer 13 and being connected to the terminals a, b, c, d and e so as to transmit the acceleration signals and the horizontal and vertical deflection signals to the acceleration electrode and the horizontal and vertical-deflection electrodes, respectively.
  • the character tracing start signal is transmitted from the switch 19 to the computer 13 through lead 25.
  • the trip-meter-wheels or detection wheels 20 and 20 are made of a material having a greater coefficient of friction such as a rubber so that it may be readily driven upon the recording medium.
  • the outer diameter of the ratchet wheel 18 is smaller than that of the trip-meter-wheels 20 and 20.
  • the trip-meter-wheels 20 and 20 rotates so that the actuator such as ratchet wheel 18 rotates, thereby making the switch 19 on and off.
  • the tracing signals are generated at a predetermined time interval.
  • the reverse movement of the recording head is not permitted because of the ratchet mechanism. Since the trip-meter-wheels 20 and 20 are spaced apart from each other, they will not read upon the characters traced. Thus, it will be readily seen that the requirements as set forth above are satisfied.
  • the switch 19 on the rachet wheel may be permitted to rotate through an angle corresponding to the spacing between the adjacent teeth in either direction (this means the ratchet wheel may be reversed in direction through this angle) so that the switch 19 may be suitably switched to initiate the starting signal. That is, there is no fear that the tracing of the first character becomes unclear or vague.
  • a hydraustatic pressure generating device or source such as a pump is required in order to feed the ink to the emitter in the recording device. Furthermore, it is also necessary to prevent the spraying or scattering of ink when the manual recording device is inclined or vibrated.
  • the ink reservoir 16 is located in a position higher than the recording device so that the ink may be fed to the valve 26 through the pipe 15 from the ink reservoir 16 under the hydraustatic pressure.
  • the valve 26 is opened only when the tracing or recording is being made. From the valve 26, ink is fed to the emitter 12 through a tube. Therefore, ink will not remain in the downstream, that is, on the other side of the emitter of the valve 26 when the tracing is not being made so that ink will not drop or flow out of the nozzle.
  • the recording device of the present invention is made simple because the pressure source is the hydraustatic pressure.
  • FIG. 3 is an exploded perspective view of the recording head depicted in FIGS. 1 and 2.
  • the manual recording device of the type described herein the positive control of the process of projection, interruption, projection and so on of the ink is difficult, the ink is generally emitted when the recording device travels upon the recording medium. Therefore it is a requirement that the ink which is not necessary for recording the characters must be directed to a suitable place other than the recording medium.
  • the member 34 is attached around the receiver 32 by the frictional force, and the holder 35 is engaged with a stop ring 36. When the holder 35 is pulled downwardly, the ink absorbing member 34 and its holder 35 may be readily pulled out of the receiver 32.
  • the stop ring 36 serves hold the ink absorbing member 34 in position relative to the holder 35.
  • FIG. 4 is a front view in cross section of the emitter. Like reference numerals employed in FIG. 3 are used to designate same parts.
  • FIG. 5 is a cross sectional view taken along X-X of FIG. 4. Like reference numerals employed in FIG. 3 are also used to designate same parts.
  • the ink As seen from FIGS. 4 and 5, when the unnecessary ink is discharged to the fine slits D of the receiver 32 shown in FIG. 4, the ink is directed under the capillary action toward the ink absorbing member 34 and is absorbed by it. That is, the capillary action serves to increase the absorbing area, thereby increasing the ink absorption.
  • a method for recording characters comprising the steps of providing a recording head including an ink emitter and a recording medium-engaging rotating member, manually moving said recording head at any speed over said recording medium with said rotating member in engagement with said recording medium to rotate said rotating member as a function of the displacement of said recording head, generating a signal representative of this displacement in response to said rotation of said rotating member,
  • said rotating member comprises a detector wheel which rotates as said recording head is moved across said recording medium and said signal representative of the displacement of said recording head is generated in response to the operation of said detection wheel, and
  • said displacement signal is transmitted to said processor separated from said recording head.
  • one character is recorded in response to said one displacement signal.
  • a manual recording device comprising: a processor of a computer,
  • said recording head comprising rotatable means engageable with a recording medium for rotation in response to movement of the recording head over the recording medium for detecting the manual displacement of said recording head over the recording medium
  • a manual recording device characterized in that said displacement detecting means is at least one wheel rotatably carried by said recording head,
  • said detecting means is associated with said signal generating means
  • said signal generating means comprises a switch and an actuator for energizing said switch to generate said displacement signal.
  • a manual recording device characterized in that said ink emitter comprises an ink nozzle
  • said ink nozzle being supplied with ink
  • said acceleration electrode for accelerating the stream of ink droplets projected from said ink nozzle and said pairs of horizontal and vertical-deflection electrodes for controlling the deflection of the stream ink droplets being electrically connected to said processor so that the signals may be applied to said electrodes.
  • a manual recording device characterized in that said displacement detecting means is a pair of wheels, and
  • said actuator is carried coaxially of and between said pair of wheels,
  • the spacing between said pair of wheels being greater than the width of the characters to be recorded so that said pair of wheels are prevented from treading upon the characters recorded.
  • a manual recording device wherein an ink source is connected to said ink emitter through an ink supply tube,
  • a valve coupled to said ink supply tube is disposed in said recording head, and the supply of ink is controlled by controlling said valve
  • a manual recording device wherein an ink receiver having slits formed through the periphery thereof is disposed forwardly of said ink nozzle, and
  • the ink directed toward said ink receiver is absorbed by an absorbing member which is detachably fitted over said ink receiver.

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  • Ink Jet (AREA)
  • Printers Characterized By Their Purpose (AREA)
US38736A 1969-05-23 1970-05-19 Method and apparatus for writing characters Expired - Lifetime US3656169A (en)

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Application Number Priority Date Filing Date Title
JP44039616A JPS5040289B1 (it) 1969-05-23 1969-05-23

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Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3786516A (en) * 1970-12-16 1974-01-15 Casio Computer Co Ltd Deflection electrode device for an ink jet printing apparatus
US3790703A (en) * 1970-06-17 1974-02-05 A Carley Method and apparatus for thermal viscosity modulating a fluid stream
US3864696A (en) * 1971-10-26 1975-02-04 Rca Corp Printing apparatus
FR2386869A1 (fr) * 1977-04-06 1978-11-03 Pitney Bowes Inc Machine a affranchir miniaturisee
US4168533A (en) * 1976-01-14 1979-09-18 Pitney-Bowes, Inc. Microcomputerized miniature postage meter
US4184261A (en) * 1977-01-07 1980-01-22 Los Angeles Scientific Instrument Co., Inc. Multipurpose drafting and measuring instrument
EP0036295A2 (en) * 1980-03-14 1981-09-23 Printos B.V. Hand-held printing apparatus
EP0052011A1 (en) * 1980-11-11 1982-05-19 Epson Corporation Dot printer and method of using the same
US4415910A (en) * 1982-01-25 1983-11-15 Ncr Corporation Ink jet transducer
DE3314041A1 (de) * 1983-04-19 1984-10-25 Ncr Corp., Dayton, Ohio Handpunktmatrixdrucker
US4506999A (en) * 1983-07-12 1985-03-26 Telesis Controls Corporation Program controlled pin matrix embossing apparatus
DE9111877U1 (it) * 1991-09-23 1991-11-14 Franz Drexel Gmbh, 8905 Mering, De
US5593236A (en) * 1995-11-06 1997-01-14 Bobry; Howard H. Hand-held sweep electronic printer with compensation for non-linear movement
US5595445A (en) * 1995-12-27 1997-01-21 Bobry; Howard H. Hand-held optical scanner
US5634730A (en) * 1995-11-06 1997-06-03 Bobry; Howard H. Hand-held electronic printer
US5816718A (en) * 1997-07-21 1998-10-06 Zebra Technologies Corporation Hand-held label printer applicator
US5829893A (en) * 1996-07-16 1998-11-03 Brother Kogyo Kabushiki Kaisha Portable printing device
US5853251A (en) * 1996-04-11 1998-12-29 Brother Kogyo Kabushiki Kaisha Manual printing device
US5988900A (en) * 1996-11-01 1999-11-23 Bobry; Howard H. Hand-held sweep electronic printer with compensation for non-linear movement
US20050022686A1 (en) * 2003-07-28 2005-02-03 Dreampatch, Llc Apparatus, method, and computer program product for animation pad transfer
JP2018051861A (ja) * 2016-09-28 2018-04-05 カシオ計算機株式会社 印刷装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3060429A (en) * 1958-05-16 1962-10-23 Certificate of correction
US3416153A (en) * 1965-10-08 1968-12-10 Hertz Ink jet recorder
US3496547A (en) * 1965-10-12 1970-02-17 American Chain & Cable Co Control system and printer controlled thereby
US3504622A (en) * 1968-09-13 1970-04-07 Ralph Morrison Print wheel setting and detenting means with electrical controls therefor
US3510878A (en) * 1968-04-02 1970-05-05 Vibrac Corp Oscillographic writing system
US3554347A (en) * 1968-04-29 1971-01-12 Burroughs Corp System for automatically setting a position counter to effect agreement with the position of a traveling printing element

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3060429A (en) * 1958-05-16 1962-10-23 Certificate of correction
US3416153A (en) * 1965-10-08 1968-12-10 Hertz Ink jet recorder
US3496547A (en) * 1965-10-12 1970-02-17 American Chain & Cable Co Control system and printer controlled thereby
US3510878A (en) * 1968-04-02 1970-05-05 Vibrac Corp Oscillographic writing system
US3554347A (en) * 1968-04-29 1971-01-12 Burroughs Corp System for automatically setting a position counter to effect agreement with the position of a traveling printing element
US3504622A (en) * 1968-09-13 1970-04-07 Ralph Morrison Print wheel setting and detenting means with electrical controls therefor

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3790703A (en) * 1970-06-17 1974-02-05 A Carley Method and apparatus for thermal viscosity modulating a fluid stream
US3786516A (en) * 1970-12-16 1974-01-15 Casio Computer Co Ltd Deflection electrode device for an ink jet printing apparatus
US3864696A (en) * 1971-10-26 1975-02-04 Rca Corp Printing apparatus
US4168533A (en) * 1976-01-14 1979-09-18 Pitney-Bowes, Inc. Microcomputerized miniature postage meter
US4184261A (en) * 1977-01-07 1980-01-22 Los Angeles Scientific Instrument Co., Inc. Multipurpose drafting and measuring instrument
FR2386869A1 (fr) * 1977-04-06 1978-11-03 Pitney Bowes Inc Machine a affranchir miniaturisee
EP0036295A2 (en) * 1980-03-14 1981-09-23 Printos B.V. Hand-held printing apparatus
EP0036295A3 (en) * 1980-03-14 1981-10-07 Printos B.V. Hand-held printing apparatus
EP0052011A1 (en) * 1980-11-11 1982-05-19 Epson Corporation Dot printer and method of using the same
US4415910A (en) * 1982-01-25 1983-11-15 Ncr Corporation Ink jet transducer
DE3314041A1 (de) * 1983-04-19 1984-10-25 Ncr Corp., Dayton, Ohio Handpunktmatrixdrucker
US4506999A (en) * 1983-07-12 1985-03-26 Telesis Controls Corporation Program controlled pin matrix embossing apparatus
DE9111877U1 (it) * 1991-09-23 1991-11-14 Franz Drexel Gmbh, 8905 Mering, De
US5593236A (en) * 1995-11-06 1997-01-14 Bobry; Howard H. Hand-held sweep electronic printer with compensation for non-linear movement
US5634730A (en) * 1995-11-06 1997-06-03 Bobry; Howard H. Hand-held electronic printer
US5595445A (en) * 1995-12-27 1997-01-21 Bobry; Howard H. Hand-held optical scanner
US5853251A (en) * 1996-04-11 1998-12-29 Brother Kogyo Kabushiki Kaisha Manual printing device
US5829893A (en) * 1996-07-16 1998-11-03 Brother Kogyo Kabushiki Kaisha Portable printing device
US5988900A (en) * 1996-11-01 1999-11-23 Bobry; Howard H. Hand-held sweep electronic printer with compensation for non-linear movement
US5816718A (en) * 1997-07-21 1998-10-06 Zebra Technologies Corporation Hand-held label printer applicator
US20050022686A1 (en) * 2003-07-28 2005-02-03 Dreampatch, Llc Apparatus, method, and computer program product for animation pad transfer
JP2018051861A (ja) * 2016-09-28 2018-04-05 カシオ計算機株式会社 印刷装置

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