专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明专利

JPH0557970A PRINTING MECHANISM OF THERMAL PRINTER 失效
公开(公告)号：JPH0557970A
公开(公告)日：1993-03-09
申请号：JP405792
申请日：1992-01-13
申请人： RICOH KK
发明人： ISHIMA KAZUMI , YOSHIMURA HIROSHI , WATANABE TETSUO
IPC分类号： B41J2/325 , B41J11/057 , B41J13/076
摘要： PURPOSE:To prevent a skew from occurrence by a method wherein a printing mechanism which presses image receiving paper on a platen clamping a tip of the image receiving paper with a presser roller, a highly gliding layer is provided to a surface of the platen and the presser roller is formed by an elastic material of a highly frictional coefficient. CONSTITUTION:The title printing mechanism clamps a tip of image receiving paper 6 onto a surface of a platen 1 with a clamper 5, presses the image receiving paper 6 onto a rubber layer 1 provided on a platen base 11 of the platen 1 with metallic presser rollers 2 to 4 to rotate the platen 1, and performs printing on the image receiving paper 6 with a thermal head 9 via an ink sheet 8. In this case, a highly gliding layer 13 is formed on a surface of the rubber layer 12 on the platen base 11. This highly lubricative layer 13 is formed by such materials of Teflon or the like that frictional force between the layer 13 and the image receiving paper 6 will be less than frictional force between the thermal head 9 and the ink sheet 8. Besides, the presser rollers 2 to 4 are composed of a rubber roller of a highly frictional coefficient to raise the frictional force between the presser rollers 2 to 4 and the image receiving paper 6.

22. 发明专利

JPH04166371A THERMAL TRANSFER PRINTER 失效
公开(公告)号：JPH04166371A
公开(公告)日：1992-06-12
申请号：JP29081390
申请日：1990-10-30
申请人： RICOH KK
发明人： TAKEUCHI NORIYASU , WATANABE TETSUO
IPC分类号： B41J17/12
摘要： PURPOSE:To enhance the operability in the replacement operation of an ink sheet or the like and to obtain a small-sized thermal transfer printer by applying printing to printing receiving paper by a card type ink sheet unit. CONSTITUTION:The printing of a Y-color is carried out by the feed of printing receiving paper in a sub-scanning direction by the rotation of a platen roller 13 and the application of pulse-like voltage to a recording head 21. At this time, the movement of an ink sheet unit 1 is dominantly performed at a head pressing point in the same way as the printing receiving paper. When the printing of the Y-color is completed, the recording head 21 is opened to return the printing receiving paper 10 to the position detected by a reflection sensor 15 by the reversal of the platen roller 13. At the same time, the ink sheet unit 1 advances by the rotation of the second paper supply roller 20 and the display 8b of the magenta M of the next color is detected by a sensor 24 to be positioned and the printing of the colors of magenta, cyan C and black Bk is carried out. Since printing is applied to the printing receiving paper by the card type ink sheet unit, the mechanism in the apparatus can be simplified and the apparatus can be miniaturized.

23. 发明专利

JPH03104657A THERMAL HEAD 失效
公开(公告)号：JPH03104657A
公开(公告)日：1991-05-01
申请号：JP24437689
申请日：1989-09-19
申请人： RICOH KK
发明人： WATANABE TETSUO
IPC分类号： B41J2/335 , B41J2/36
摘要： PURPOSE:To enable transfer density to be easily controlled even though a form of a heater part is not specialized and to achieve high yield, high reliability and low cost by a method wherein inorganic particles having thermal conductivity different from that of an abrasion resistant material are wholly or in layers uniformly dispersed in a protective film. CONSTITUTION:A heater part 5 consisting of a glaze layer 2, a resistor 3, and an electrode 4 and a protective film 6 are established on a substrate 1. Herein, inorganic particles 7 having thermal conductivity different from that of an abrasion resistant material being a constitutional material of the film itself are uniformly dispersed in the protective film 6. Though this dispersion state is uniform wholly over the layer, it may be uniform in layers to a resistor side, an outer surface side, or in a central part, etc., of the protective film. By such constitution of the protective film, when heat generated in the resistor is conducted in a protective film direction, thermal conduction is interrupted or accelerated with the particle 7 having different thermal conductivity dispersed in the film. Consequently, its most front surface ought to have irregular thermal distribution instead of uniform thermal distribution.

24. 发明专利

JPH01244880A THERMAL TRANSFER PRINTER 失效
公开(公告)号：JPH01244880A
公开(公告)日：1989-09-29
申请号：JP7274588
申请日：1988-03-25
申请人： RICOH KK
发明人： WATANABE TETSUO
IPC分类号： B41J17/02 , B41J17/14
摘要： PURPOSE:To prevent the used position of an ink sheet from deforming or deteriorating in an ageing manner by selectively driving the winding of the sheet in any mode to match its type. CONSTITUTION:If a designated mode is in case of a all zone moving mode, an A mode routine is called. In case of a short zone moving mode, a B mode routine is called, the routine of the mode is executed, and the operation of drive control means is then stopped. For example, when the A mode routine is called, whether the winding of an ink sheet 1 on a first winding shaft 2a is completed or not is judged, depending upon whether the mark sealed on the final end of the sheet 1 is detected by a mark sensor 22 or not. Here, if the sensor 22 is OFF, it is returned to a main routine. If the sensor 22 is ON, the number 1 of uses of the sheet 1 is added to the storage number (n) of a printing number memory 14, and stored. When the storage number (n) of the memory 14 arrives at the usable number (n0) of the sheet 1, it is returned.

25. 发明专利

JPS6426488A INK RIBBON CASSETTE 失效
公开(公告)号：JPS6426488A
公开(公告)日：1989-01-27
申请号：JP15117788
申请日：1988-06-21
申请人： RICOH KK
发明人： WATANABE TETSUO
IPC分类号： B41J32/00
摘要： PURPOSE:To enable a printer to be miniaturized by lessening an occupied space of a cassette and by omitting waste of a tape, by a method wherein a delivery spool and a winding spool are arranged in two stages, and the winding spool is engaged with a tape winding mechanism. CONSTITUTION:Three kinds of thermal transfer tapes, a yellow tape 11Y, a cyan tape 11C, and a magenta tape 11M, and a winding mechanism by which those tapes are successively wound simultaneously with printing are provided. Tape cassettes of three colors are so arranged that an unused tape is wound around a delivery spool 12a at an upper stage of each and a used tape is wound around a winding spool at a lower stage of each. Then, when three pieces of heads 4Y, 4C, 4M are respectively made to print each one color of three primary colors, the three colors are successively, in a superposed manner, printed by one scanning, and the all colors can be represented at once.

26. 发明专利

JPS62286763A DRIVE CONTROL METHOD FOR THERMAL HEAD 失效
公开(公告)号：JPS62286763A
公开(公告)日：1987-12-12
申请号：JP12986986
申请日：1986-06-04
申请人： RICOH KK
发明人： WATANABE TETSUO
IPC分类号： B41J2/355 , B41J2/36
摘要： PURPOSE:To perform high quality printing providing no difference in the diameter of a printing dot, by counting a line feed time for each printing line and applying heat energy to a thermal head in the applying quantity in a correction table according to said line feed time. CONSTITUTION:The line feed time required in the printing of a current printing line is counted from the previous printing line for each printing line, for example, a clock signal is counted by a counter. The applying quantity of the heat energy to a thermal head according to the line feed time thus counted, concretely, either one of current supply time data t1-t4 is found out from a correction table and the heat energy corresponding to said line feed time is applied to perform printing. By this method, even when a long time is required in line feed and the surface temp. of the heat generator of the thermal head is lowered, printing based on a dot having the same size as the dot in other printing line can be performed.

27. 发明专利

JPS62179975A THERMAL TRANSFER RECORDER 失效
公开(公告)号：JPS62179975A
公开(公告)日：1987-08-07
申请号：JP2175086
申请日：1986-02-03
申请人： RICOH KK
发明人： WATANABE TETSUO
IPC分类号： B41J31/00 , B41J2/325 , B41J17/36 , B41M5/382 , B41M5/41
摘要： PURPOSE:To enable a single recorder to perform both transfer of images with high gradation by using a sublimable ink and transfer of clear characters of line patterns by using a fusible ink, by providing color areas of the sublimable ink and color areas of the fusible ink on a partitioned basis on an ink sheet. CONSTITUTION:An ink sheet 10 is provided alternately with black sublimable ink areas 11 and black fusible ink areas 12, and is provided with color discrimination marks 13b and ink discrimination marks 141, 142 so that lines and characters for monochroic gradated images can be transferred. An ink sheet 15 is provided sequentially with yellow, magenta and cyan sublimable ink areas 11y, 11m, 11c and black fusible ink areas 12, and is provided with color discrimination marks 13y, 13m, 13c, 13b and ink discrimination marks 131, 142 so that color graded images, lines and characters can be transferred. Since the fusible ink and the sublimable ink differ in thermal characteristics, energization time of a thermal head for the fusible ink is set to be different from that for the sublimable ink. In addition, a line-feed time for a paper when using the fusible ink is set to be different from that when using the sublimable ink. Accordingly, a printing operation including both transfer by use of the sublimable inks and transfer by use of the fusible ink can be performed by a single recorder and the same ink sheet.

28. 发明专利

JPS61164872A CASSETTE FOR RECORDING MEDIUM 失效
公开(公告)号：JPS61164872A
公开(公告)日：1986-07-25
申请号：JP679785
申请日：1985-01-18
申请人： RICOH KK
发明人： WATANABE TETSUO
IPC分类号： B41J17/24 , B41J17/32
摘要： PURPOSE:To reduce the space required for storing a cassette and to prevent foreign matter or dust from penetrating into the cassette during storage thereof, by providing a mechanism for expanding or contracting the spacing between a payout-side containing part and a take-up side containing part for a recording medium, and a mechanism for taking up a sagged part of the medium when the spacing is contracted. CONSTITUTION:When a take-up side containing casing 3 and a payout-side containing casing 4 are expanded from their state for storage, a slide plate 5 is slidden along a stepped groove 6A of a guide plate 6, and an engaging projected part 5A is engaged to an engaging part 6C. At this time, the part 6C is clamped by a fixed part 5B and the projected part 5A, and the casings 3, 4 are fixed at positions where the spacing between a rotary support shaft for the recording medium in the casing 3 and that in the casing 4 is set to a predetermined value. When the projected part 5A is pushed in as to contract the casing 3, 4 toward each other under pressure, a take-up arm 12 is driven by the tension of a rope 14, and a take-up member 13 takes up the sagged portion of the recording medium 2, whereby the casings 3, 4 are contacted into the state for storage. Accordingly, the space required for storing the cassette is reduced, and the medium 2 is covered by protective covers 3C, 3C to prevent adhesion of foreign matter or the like to the medium 2.

29. 发明专利

JPS6083872A THERMAL TRANSFER RECORDING APPARATUS 失效
公开(公告)号：JPS6083872A
公开(公告)日：1985-05-13
申请号：JP19388583
申请日：1983-10-17
申请人： RICOH KK
发明人： WATANABE TETSUO
IPC分类号： B41J2/325 , B41J11/02 , B41J27/00 , B41J29/17 , B41J29/377 , B41J31/00
摘要： PURPOSE:To use an ink sheet itself as recording paper, by transferring ink other than a recording part to a platen side while cleaning the platen by a blade. CONSTITUTION:A thermal head 1 having a heat generating element corresponding to one line thereto in a scanning direction is driven to transfer ink other than the recording part thereof to the side of a platen 2 and recording corresponding to one line is successively performed to an ink sheet 3 to obtain the ink sheet to which a necessary image is recorded by ink of an unprinted part. The ink transferred to the platen side is scraped off by a blade 4 and the surface of the platen is always cleaned.

30. 发明专利

JPS6016910B2 失效
公开(公告)号：JPS6016910B2
公开(公告)日：1985-04-30
申请号：JP14354479
申请日：1979-11-06
申请人： RICOH KK
发明人： WATANABE TETSUO , HASEGAWA KEIJI
IPC分类号： B41J1/30 , B41J2/00 , B41J3/00 , B41J7/94 , B41J9/00 , B41J9/48 , B41J25/20 , B41J29/36 , B41J35/00 , B41J35/10

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式