JPS61255878A - Line heat transfer color printer - Google Patents
Line heat transfer color printerInfo
- Publication number
- JPS61255878A JPS61255878A JP9864785A JP9864785A JPS61255878A JP S61255878 A JPS61255878 A JP S61255878A JP 9864785 A JP9864785 A JP 9864785A JP 9864785 A JP9864785 A JP 9864785A JP S61255878 A JPS61255878 A JP S61255878A
- Authority
- JP
- Japan
- Prior art keywords
- rollers
- guide roller
- paper
- color printer
- platen
- 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.)
- Pending
Links
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
- B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
- B41J13/10—Sheet holders, retainers, movable guides, or stationary guides
- B41J13/20—Bails
Landscapes
- Handling Of Cut Paper (AREA)
- Electronic Switches (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Advancing Webs (AREA)
Abstract
Description
【発明の詳細な説明】
挟監分互
本発明は、プラテンとこれに圧接するガイドローラとで
用紙を挟持して順方向送りおよび逆方向送りするライン
熱転写カラープリンタに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a line thermal transfer color printer in which paper is sandwiched between a platen and a guide roller that is in pressure contact with the platen and is fed forward and backward.
盗」U1擢
この種のプリンタは、第3図に示すように、プラテン(
1)とガイドローラ(2)との間に用紙(3)を挿入し
、プラテン(1)を正転して用紙(3)をインクシート
(4)と重ね合せながら所定位置まで順方向に送った後
、印字ヘッド(5)をプラテン(1)に押し当て、プラ
テン(1)を再び正転して用紙(3)とインクシート(
4)とを初期位置まで送った後、第1色目のたとえばイ
エロ(Y)の記録をする。その終了後、用紙(3)をさ
らに順方向に所定位置まで送り、印字ヘッド(5)の押
し当てを解除した後。This type of printer uses a platen (as shown in Figure 3).
Insert the paper (3) between the paper (1) and the guide roller (2), rotate the platen (1) in the normal direction, and feed the paper (3) in the forward direction to a predetermined position while overlapping the ink sheet (4). After that, press the print head (5) against the platen (1), rotate the platen (1) in the normal direction again, and print the paper (3) and ink sheet (
4) to the initial position, the first color, for example yellow (Y), is recorded. After that, the paper (3) is further forwarded to a predetermined position and the print head (5) is released from the press.
プラテン(1)を逆転して用紙(3)を初期位置まで逆
送し、印字ヘッド(5)を再び押し当てて第2色目のマ
ゼンタ(M)の記録をする。この後、同様に用紙(3)
の所定位置への順方向送りと初期位置への逆方向送りを
行い、第3色目のシアン(C)の記録をするようになっ
ている。The platen (1) is reversed to transport the paper (3) back to the initial position, and the print head (5) is pressed again to record the second color, magenta (M). After this, similarly paper (3)
A forward direction to a predetermined position and a reverse direction to an initial position are performed, and the third color cyan (C) is recorded.
ところで、従来においては、ガイドローラ(2)が、第
4図に示すようにローラ本体(6)をシャフト(7)に
一体回転するように固着した構造、あるいは第5図に示
すように左右のコロ(8)をシャフト(7)に一体回転
するように固着した構造になっていたため、用紙(3)
がスキュー(斜め送り)して(Y)の記録線と(M)の
記録線と(C)の記録線とがずれ、印字品質が低下する
という問題点があった。By the way, conventionally, the guide roller (2) has a structure in which the roller body (6) is fixed to the shaft (7) so as to rotate integrally as shown in FIG. Since the roller (8) was fixed to the shaft (7) so that it could rotate integrally, the paper (3)
There was a problem in that the recording line (Y), the recording line (M), and the recording line (C) were skewed (diagonal feeding), and the recording line (Y), the recording line (M), and the recording line (C) were misaligned, resulting in a decrease in print quality.
そこで1本発明者は、スキューが生じる原因を解明する
ために、第6図に示すように、シャフト(7)に左右の
コロ(8)を一体回転するように固着したガイドローラ
(2)を用い、そのシャフト(7)を左右のばね(9)
で付勢して左右のコロ(8)をプラテン(1)に圧接さ
せ、この状態で左右のコロ(8)の外径を相違させると
か、その摩擦係数を変えるとか、左右のばね(9)の力
を相違させるなど種々の条件を変えて実験をしたところ
、とりわけ次のような場合にスキューを生じることが判
った。Therefore, in order to elucidate the cause of the skew, the present inventor installed a guide roller (2) with left and right rollers (8) fixed to the shaft (7) so as to rotate together, as shown in Fig. 6. Use the shaft (7) to connect the left and right springs (9)
to force the left and right rollers (8) into pressure contact with the platen (1), and in this state, you can change the outer diameters of the left and right rollers (8) or change their friction coefficients by pressing the left and right springs (9). Experiments were conducted under various conditions such as different forces, and it was found that skew occurs especially in the following cases.
■ 左右のコロ(8)の表面摩擦係数がアンバランスな
場合。■ When the surface friction coefficients of the left and right rollers (8) are unbalanced.
■ 左右のコロ(8)の外径が異なる場合。■ When the outer diameters of the left and right rollers (8) are different.
■ プラテン(1)に対する左右のコロ(8)の圧力が
アンバランスな場合。■ When the pressure of the left and right rollers (8) against the platen (1) is unbalanced.
なお、ガイドローラ(2)の機能は、 (イ) スタート時に用紙を記録部へ送り込む。The function of the guide roller (2) is as follows. (b) Feed the paper into the recording section at the start.
(ロ)記録時、インクシートに引張られて用紙がプラテ
ンの速度以」二に送られるような場合。(b) When the paper is pulled by the ink sheet and fed faster than the platen speed during recording.
ブレーキをかける。Apply the brakes.
(ハ)用紙をプラテンとで挟持しながら逆送す、る。(c) Reverse feed while holding the paper between the platen.
の3つである。このうちカラー記録位置精度に影響する
のは、(ロ)と(ハ)であるが、(Y)・(M)・(C
)の各画才法(副走査長さ)には変化がないと仮定する
と、この場合、(ハ)のみが問題になると考えられる。There are three. Of these, (B) and (C) affect color recording position accuracy, but (Y), (M), and (C)
Assuming that there is no change in each stroke method (sub-scanning length) in ), only (c) is considered to be a problem in this case.
そこで、上記■・■・■に対処して左右のコロ(8)の
表面摩擦係数を等しくするとか、その外径を正確に同一
にするとか、その圧力を等しくするという方法が考えら
れるが、このような方法は、製造技術的に戴点が多いば
かりでなく、■・■・■の3点ともに対処しなければス
キュー防止の効果を充分に期待できない。Therefore, in order to deal with the above-mentioned problems (■, ■, ■), it is possible to make the surface friction coefficients of the left and right rollers (8) equal, to make their outer diameters exactly the same, or to make their pressures equal. Such a method is not only expensive in terms of manufacturing technology, but also cannot be expected to be sufficiently effective in preventing skew unless all three points (1), (2), and (2) are addressed.
1−一孜
本発明の目的は、スキュー防止を簡単な構成で的確に実
現できるようにすることにある。1-Ichigo An object of the present invention is to enable accurate prevention of skew with a simple configuration.
璽−一處
本発明は、スキューが結局は用紙の送り量が左右アンバ
ランスになることから生ずる、ということに着目し、ガ
イドローラを構成する少なくとも2個のコロのいくつか
を各々が独立して回転する関係にしたものである。The present invention focuses on the fact that skew is caused by the left-right unbalance of the paper feed amount, and the present invention has developed a system in which some of the at least two rollers constituting the guide roller are made independent of each other. The relationship is such that it rotates.
このような構成にすると、上記■・■・■のようなこと
で用紙に与える力が左右アンバランスになっても、それ
は、コロ相互に回転量の相違が生じることによって吸収
される。With such a configuration, even if the force applied to the paper is left and right unbalanced due to the above-mentioned problems 1, 2, and 2, this is absorbed by the difference in rotation amount between the rollers.
第1図は本発明の第1実施例を示し、そのガイドローラ
(10)は、2個のコロ(11)をそれぞれベアリング
(12)を介してシャフト(13)に回転自在に軸受け
している。FIG. 1 shows a first embodiment of the present invention, in which a guide roller (10) has two rollers (11) rotatably supported on a shaft (13) via bearings (12). .
第2図は本発明の第2実施例を示し、そのガイドローラ
(14)は、一方のコロ(15)をベアリング(16)
を介してシャフト(17)に回転自在に軸受し、他方の
コロ(18)はシャフト(17)と一体回転するように
固着している。FIG. 2 shows a second embodiment of the present invention, in which the guide roller (14) has one roller (15) connected to the bearing (16).
The roller (18) is rotatably supported on the shaft (17) via the shaft (17), and the other roller (18) is fixed to rotate integrally with the shaft (17).
ところで、上述した実施例では、シャフト(13)ある
いは(17)にそれぞれ2個のコロ(11)・(11)
あるいはコロ(15)・(18)を取り付ける場合につ
いて説明したが、2個のコロに限らないことはいうまで
もない。By the way, in the above-mentioned embodiment, two rollers (11) and (11) are provided on the shaft (13) or (17), respectively.
Alternatively, although the case where rollers (15) and (18) are attached has been described, it goes without saying that the attachment is not limited to two rollers.
勿−一二艮
したがって、本発明によれば、ガイドローラのコロ相違
間に、表面摩擦係数や外径や圧力などのアンバランスが
あっても、用紙のスキューを簡単に防止できる。Therefore, according to the present invention, even if there is an imbalance in the surface friction coefficient, outer diameter, pressure, etc. between the guide rollers, skewing of the paper can be easily prevented.
第1図は本発明の第1実施例のガイドローラの断面図、
第2図は第2実施例のガイドローラの断面図、第3図は
ライン熱転写カラープリンタの概念図、第4図および第
5図はそれぞれ従来のガイドローラの断面図、第6図は
従来構造での実験法を示す斜視図である。
(10)・(14)・・・・・・・・・ガイドローラ(
11)・(15)・(18)・・・・・・・・・コロ(
12)・(16)・・・・・・・・・ベアリング(13
)・(17)・・・・・・・・・シャフト第1図
Ω
第2図
第3図
第4図
第5図
第6図FIG. 1 is a sectional view of a guide roller according to a first embodiment of the present invention;
Figure 2 is a sectional view of the guide roller of the second embodiment, Figure 3 is a conceptual diagram of a line thermal transfer color printer, Figures 4 and 5 are sectional views of conventional guide rollers, and Figure 6 is a conventional structure. FIG. 2 is a perspective view showing an experimental method. (10)・(14)・・・・・・・・・Guide roller (
11)・(15)・(18)・・・・・・・・・Koro(
12)・(16)・・・・・・・・・Bearing (13
)・(17)・・・・・・・・・Shaft Fig. 1 Ω Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6
Claims (1)
して順方向送りおよび逆方向送りするライン熱転写カラ
ープリンタにおいて、前記ガイドローラをシャフトと少
なくとも2個のコロで構成し、該コロのいくつかを各々
が独立して回転する関係にしたことを特徴とするライン
熱転写カラープリンタ。In a line thermal transfer color printer in which paper is sandwiched between a platen and a guide roller that is in pressure contact with the platen and is fed forward and backward, the guide roller is composed of a shaft and at least two rollers, and some of the rollers are A line thermal transfer color printer characterized in that each part rotates independently.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9864785A JPS61255878A (en) | 1985-05-09 | 1985-05-09 | Line heat transfer color printer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9864785A JPS61255878A (en) | 1985-05-09 | 1985-05-09 | Line heat transfer color printer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61255878A true JPS61255878A (en) | 1986-11-13 |
Family
ID=14225293
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9864785A Pending JPS61255878A (en) | 1985-05-09 | 1985-05-09 | Line heat transfer color printer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61255878A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5188468A (en) * | 1989-02-21 | 1993-02-23 | Thorn Emi Electronics Limited | Transport device |
JP2007261155A (en) * | 2006-03-29 | 2007-10-11 | Seiko Epson Corp | Driven roller attaching device, recording device, liquid jetting device |
JP2016175724A (en) * | 2015-03-19 | 2016-10-06 | 富士ゼロックス株式会社 | Conveyance device, image reading device and image formation device |
-
1985
- 1985-05-09 JP JP9864785A patent/JPS61255878A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5188468A (en) * | 1989-02-21 | 1993-02-23 | Thorn Emi Electronics Limited | Transport device |
JP2007261155A (en) * | 2006-03-29 | 2007-10-11 | Seiko Epson Corp | Driven roller attaching device, recording device, liquid jetting device |
JP2016175724A (en) * | 2015-03-19 | 2016-10-06 | 富士ゼロックス株式会社 | Conveyance device, image reading device and image formation device |
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