JPS60111908A - System for detecting size of paper in cassette - Google Patents
System for detecting size of paper in cassetteInfo
- Publication number
- JPS60111908A JPS60111908A JP22005483A JP22005483A JPS60111908A JP S60111908 A JPS60111908 A JP S60111908A JP 22005483 A JP22005483 A JP 22005483A JP 22005483 A JP22005483 A JP 22005483A JP S60111908 A JPS60111908 A JP S60111908A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- cassette
- light
- light receiving
- receiving part
- 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
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
- B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/28—Measuring arrangements characterised by the use of optical techniques for measuring areas
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Controlling Sheets Or Webs (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Handling Of Sheets (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
Description
【発明の詳細な説明】
く技術分野〉
この発明は、カセット内の用紙サイズ検知方式に関し、
更に詳細にいえば、Δ４．Ａ５．８４゜８５等の定型用
紙以外の大きさの用紙のサイズをも検知し得る用紙サイ
ズ検知方式に関する。[Detailed Description of the Invention] Technical Field> The present invention relates to a paper size detection method in a cassette,
More specifically, Δ4. The present invention relates to a paper size detection method capable of detecting paper sizes other than standard paper such as A5.84°85.
〈従来技術〉
従来から模写機においては、多数枚の用紙を装填したカ
セッ１〜を装着し、このカセットから１枚宛用紙を送出
して複写処理を行なうこととしており、カセット内の用
紙サイズの検知方式としては、■ カセット毎に装填可
能な用紙サイズを定め、各カセットの突起によりサイズ
検知用スイッチを作動させて用紙サイズを検知する方式
４式％）
■ カセット毎に装填可能な用紙サイズを定め、各カセ
ット底面に、サイズに対応させて異なる位置にマグネッ
トを取イリけ、複写機本体の所定位置に取１４けた複数
個のリードスイッチを選択的に作動させて用紙サイズを
検知Ｊる方式〈特開昭５４−２３５３１号参照）、Ｊ３
よび
■ カセット内の用紙の両サイドを支える側板を間隔１
１１節可能とし、この側板間隔を検出１ることにより用
紙サイズを検知する方式（特開昭５７−１０７３３７号
参照）がある。<Prior art> Conventionally, copying machines have been equipped with cassettes 1 to 1 loaded with a large number of sheets of paper, and the copying process has been performed by sending out one sheet of paper from this cassette. The detection methods include: ■ A method in which the paper size that can be loaded in each cassette is determined, and a size detection switch is activated by a protrusion on each cassette to detect the paper size (4 types%) ■ The paper size that can be loaded in each cassette is determined. Paper size is detected by placing magnets at different positions on the bottom of each cassette according to the paper size, and selectively operating multiple 14-digit reed switches placed at predetermined positions on the main body of the copying machine. (Refer to Japanese Patent Application Laid-Open No. 54-23531), J3
and ■ Space the side plates that support both sides of the paper in the cassette 1
There is a method (see Japanese Unexamined Patent Publication No. 107337/1983) in which the paper size is detected by detecting the gap between the side plates and the paper size.
このうち■および■の検知方式においては、カセット毎
の装填可能な用紙サイズをむやみに多くＪることはカセ
ットの種類の増加をもたらし、使用上不便なものとなる
ので、Ａ４．、Ａ５．Ｂ４゜Ｂ５．等の定型用紙に限定
せざるを得ず、定形外の用紙サイズは検知できないので
特に拡大、縮小の倍率を自由に設定するズーム方式の複
写機には不向きである。Among these, in the detection methods of ■ and ■, unnecessarily increasing the paper size that can be loaded in each cassette will result in an increase in the types of cassettes, making it inconvenient to use.A4. , A5. B4゜B5. It is not suitable for a zoom type copying machine in which the magnification of enlargement and reduction can be freely set because it cannot detect non-standard paper sizes.
また、■の検知方式においては、側板に発光器および受
光器を取付けて、両者の間隔変化にともなう受光器の出
力変化により用紙サイズを検知し、或は摺動抵抗の摺動
接点を側板間隔にあわせて移動させ、抵抗値変化により
用紙サイズを検知り−るので、定形外用紙のサイズをも
検知できるという利点があるが、何れの場合にもカセッ
１−の用紙り一イズ検知部と複写機本体とを電気的に接
続しなければならず、力はット自体の構成が複雑化し、
かつ大型化するとともに電気的接続部の構成も複雑化し
、また、距離変化に伴なう受光器の出力変化、又は抵抗
値変化であるから検知精度を余り高めることができず、
頻繁にカセッ１〜の交換を行なう複写機用としては不向
きである。In addition, in the detection method (2), a light emitter and a light receiver are attached to the side plate, and the paper size is detected by the change in the output of the light receiver as the distance between the two changes, or the sliding contact of the sliding resistor is connected to the side plate. Since the paper size is detected by the change in resistance value, it has the advantage of being able to detect the size of non-standard paper. It must be electrically connected to the copying machine, and the configuration of the power kit itself becomes complicated.
In addition, as the size increases, the configuration of the electrical connection part becomes complicated, and the detection accuracy cannot be improved much because the change in the output of the light receiver or the change in the resistance value occurs due to the change in distance.
It is unsuitable for use in copying machines where cassettes 1 to 1 are frequently replaced.
〈目的〉
この発明は、上記の問題点に鑑みてなされたものであり
、カレン１−自体の構成を複雑化させず、かつ従来品と
同等の小型サイズとし、しかも用紙による遮光部以外の
投光量を利用することにより定形用紙１ナイスのみなら
ず、定形外用紙サイズをも確実に検知可能とし、更には
用紙の有無およびカセット装着の有無をも検知可能とす
る用紙リーイズ検知方式を提供することを目的と１−る
。<Purpose> The present invention was made in view of the above-mentioned problems, and does not complicate the structure of Karen 1- itself, makes it as small as the conventional product, and eliminates the need for projection other than the light shielding part made of paper. To provide a paper rise detection method which can reliably detect not only one size of standard size paper but also non-standard size paper by using the amount of light, and can also detect the presence or absence of paper and the presence or absence of a cassette installed. The purpose is 1-.
〈構成〉
かかる目的を達成づるための本願発明のカセット内の用
紙サイズ検知方式は、複写機本体に装名されるカレット
内の用紙を挾ｌυで上下に対向さＵて投光部および受光
部を設け、受光部のうち用紙に遮られない部分にのみ投
光して受光部の充電変換出力により用紙サイズを検知す
るようにしたことを特徴としている。<Configuration> In order to achieve the above object, the paper size detection method in the cassette of the present invention is such that the paper in the cullet loaded in the main body of the copying machine is vertically opposed to each other with a pair of scissors, and a light emitting part and a light receiving part are used. The present invention is characterized in that it emits light only to a portion of the light-receiving section that is not blocked by the paper, and detects the paper size based on the charge conversion output of the light-receiving section.
〈実施例〉 以下、実施例を示１添付図面によって詳細に説明する。<Example> Hereinafter, embodiments will be described in detail with reference to the accompanying drawings.
第１図はカセットの斜視図、第２図はカセットの平面図
である。FIG. 1 is a perspective view of the cassette, and FIG. 2 is a plan view of the cassette.
（１）は給紙用のカセットであり、上面開放の扁平長方
形箱状を呈し、底板（２）の前端寄り所定位置に用紙押
し上げ板（４）を取付【ノである。この用紙押し上げ板
（４）は、基端部（第１図中右側）の所定位置に外方に
のびる係合軸（５） （５）をイｊし、この係合軸（５
））（５）をカセット（１）の側板（３） （３１に形
成した孔［６１（６１に挿通することにより上下方向回
動可能に支持され、かつ先端部下面と底板（２）との間
にコイルばね（７１（７１を介挿することにより常時上
方回動りるよう（Ｊ勢されている。また、底板（２の上
面の両側寄りと後方寄りにそれぞれ規制板（８１（８１
および規制板（１４）を取付けてあり、このうち規制板
（８１（８）は用紙の幅にあわせて溝（９） （９１に
沿ってスライド可能とされ、規制板（１４）は用紙の長
さにあわせて溝（１５）に沿ってスライド可能とされて
いる。(1) is a paper feeding cassette, which has a flat rectangular box shape with an open top, and has a paper push-up plate (4) attached to a predetermined position near the front end of the bottom plate (2). This paper push-up plate (4) has an engaging shaft (5) extending outwardly at a predetermined position on the base end (right side in FIG. 1).
)) (5) is supported rotatably in the vertical direction by inserting it into the hole [61 (61) formed in the side plate (3) (31) of the cassette (1), and the lower surface of the tip and the bottom plate (2) By inserting a coil spring (71 (71) between them, the coil spring (71) is always biased so that it can rotate upward at all times. In addition, regulating plates (81 (81)
and a regulating plate (14) are attached, among which the regulating plate (81 (8) can be slid along the groove (9) (91) according to the width of the paper, and the regulating plate (14) It is made possible to slide along the groove (15) according to the timing.
そして、規制板（８１ｆ８１は、底板（２）に沿う水平
部（１０）と側板（３）に平行な垂直部（１１）とを主
体として構成され、水平部（１０〉の前端縁がら前方に
延びる平板拐を上方に折曲形成し、更にその上端部を水
平後方に折曲して分離爪（１２）を形成しである。The regulating plate (81f81) is mainly composed of a horizontal part (10) along the bottom plate (2) and a vertical part (11) parallel to the side plate (3), and extends forward from the front edge of the horizontal part (10>). A separating claw (12) is formed by bending the extending flat plate upward and further bending its upper end horizontally backward.
また、前記用紙押し上げ板（４）の左右所定位置には、
規制板（８） （８１の移動を許容する切欠部（１３）
（１３）が形成してあり、底板（２）の所定位置に形成
した横長透光部（１７） （第３図および第４図に示Ｊ
ごとく、横長満（１７γに透明板（１７）′を取イｊ番
ノることににり構成されている。）をこの切欠部（１３
） （１３）に臨ませている。また、（１Ｇ）は規制板
（１４）の移動を許容する切欠部である。Further, at predetermined positions on the left and right sides of the paper push-up plate (4),
Regulation plate (8) (notch part (13) that allows movement of 81
(13) is formed, and an oblong transparent portion (17) is formed at a predetermined position on the bottom plate (2) (as shown in Figures 3 and 4).
As shown, the horizontally long full length (consisting of removing the transparent plate (17)' at 17γ) is inserted into this notch (13
) (13). Further, (1G) is a notch that allows movement of the regulation plate (14).
第３図は用紙サイズ検知部にカセットを装着した状態を
示す縦断側面図、第４図は縦断背面図である。FIG. 3 is a longitudinal side view showing a state in which the cassette is attached to the paper size detection section, and FIG. 4 is a longitudinal rear view.
（２０）は複写機本体であり、カレット受は板（２１）
と上板（２２）とでカセット装着空間を形成してあり、
内奥部にカセット受り板（２１）を垂直上方に折曲して
カセット位置決め用のストッパー（２３）を形成しであ
る。そして、カセット受【プ板（２１）の所定位置およ
び上板（２２）の所定位置に互に上下対向させて光透過
用のスリン１〜（２４）＜２５）を形成しであるととも
に、スリット（２４）の直下に太陽電池等の光電変換レ
ルからなる受光部（２Ｇ）を取（＝ｌけ、スリット（２
５）の直上に、ランプＬＥＤ等の投光部（２７）を取付
【プてあり、さらには、カセット（１）装着時に、横長
透光部（１７）が両スリット（２４） （２５）と正対
し、投光部（２７〉からの光が、スリット（２５）、横
長透光部＜１７）およびスリット（２４）を通して受光
部（２６）に照射されるようにしている。尚、＜２８〉
は給紙ローラであり、（２９）はレジストローラであり
、（３０）はカセット（１）を案内するガイドレールで
あり、（３１）は用紙搬送路である。(20) is the main body of the copying machine, and the cullet holder is a plate (21)
and the upper plate (22) form a cassette mounting space,
A stopper (23) for positioning the cassette is formed by bending the cassette receiving plate (21) vertically upward at the innermost part. Then, slits 1 to (24) < 25 for light transmission are formed at a predetermined position of the cassette receiver (21) and a predetermined position of the upper plate (22) so as to be vertically opposed to each other. Place the light receiving part (2G) consisting of a photoelectric conversion layer such as a solar cell directly under the slit (24).
5), the light emitting part (27) such as a lamp LED is attached [], and furthermore, when the cassette (1) is installed, the horizontally elongated transparent part (17) connects with both slits (24) and (25). They are directly facing each other, and light from the light projecting section (27>) is irradiated onto the light receiving section (26) through the slit (25), the horizontally elongated transparent section <17), and the slit (24). Furthermore, <28>
is a paper feed roller, (29) is a registration roller, (30) is a guide rail that guides the cassette (1), and (31) is a paper conveyance path.
以上の構成であれば、用紙押し上げ板（／ｌ）上に所定
枚数の用紙（′Ｐ）を載置した後、規制板（８１Ｆ８１
を用紙（Ｐ）の両側端に当接させて、分離爪（１２）（
１２）によって用紙（Ｐ）の先端部両側寄り部を押え、
さらに規制板（１４〉を用紙（Ｐ）の後端に当接させて
カセット（１）内への用紙（１））セットを完了し、次
いで、複写機本体（２０）にカセット（１）を装着する
ことにより、以下のようにして用紙サイズを検知するこ
とができる。With the above configuration, after placing a predetermined number of sheets of paper ('P) on the paper push-up plate (/l), the regulation plate (81F81
are in contact with both sides of the paper (P), and then press the separation claws (12) (
12) to hold down the leading edge of the paper (P) on both sides,
Furthermore, the regulation plate (14) is brought into contact with the rear end of the paper (P) to complete the setting of the paper (1) into the cassette (1), and then the cassette (1) is placed into the copying machine main body (20). By installing it, the paper size can be detected as follows.
即ち、投光部（２７）からの光は常時スリット（２５）
を通して下方に照射されているのであり、力［ット（１
）を装着していない場合には全投光量がスリンｈ（２４
）を通して受光部（２Ｇ）に照射されているのであるが
、カセット（１）を装着すれば、用紙（Ｐ）および規制
板（８１（８１により遮られる部分にＪ３い又は受光部
（２６）に照射されず、これ以外の部分においてのみ受
光部（２６）に照射されることとなり、光の照射量に対
応する信号が受光部（２６）から出力される。そして、
この信号は用紙（Ｐ）が人きレノれば小さく、用紙（Ｐ
）が小さければ大きくなる。したがって、この受光部〈
２６）からの信号によって用紙サイズを検知し、特にズ
ーム方式の複写機においてはこの信号に基づいて拡大。That is, the light from the light projecting section (27) is always transmitted through the slit (25).
It is irradiated downward through the beam, and the force [t(1
) is not installed, the total light output will be the Surin h (24
), but if the cassette (1) is installed, the paper (P) and the regulating plate (J3 will be in the part blocked by 81 (81) or the light receiving part (26) will be illuminated. The light receiving section (26) is not irradiated, and the light receiving section (26) is irradiated only in other parts, and a signal corresponding to the amount of light irradiation is output from the light receiving section (26).
This signal will be small if the paper (P) is empty;
) becomes larger if it is smaller. Therefore, this light receiving part
The paper size is detected by the signal from 26), and especially in zoom type copying machines, the paper size is enlarged based on this signal.
縮小の１８率を原稿のサイズとの信号により、自動的に
設定できることになる。また、以上の説明から明らかな
ように、用紙サイズを検知できることは勿論、受光部（
２６）のうち切欠部（１３） （１３）に臨む部分全域
に光が照射されることにより用紙（］〕）がセットされ
ていないことを検知でき、或は受光部（２Ｇ）全域（但
し、規制板（１８） （１８）の垂直部（１１）により
遮光される部分を除く）に光が照射されることによりカ
セッ１〜（１）がレットされていないことも検知できる
（何れの場合も図示せず）ので、特別な検知装βを取イ
］ける必要がなくなる。This means that the reduction ratio of 18 can be automatically set based on the signal with the original size. In addition, as is clear from the above explanation, not only can paper size be detected, but also the light receiving section (
26), it is possible to detect that paper (]) is not set by irradiating the entire area facing the notch (13) (13), or the entire area of the light receiving section (2G) (however, It is also possible to detect that cassettes 1 to (1) are not loaded by irradiating light on the regulation plate (18) (excluding the part blocked by the vertical part (11) of (18)) (in either case). (not shown), there is no need to provide a special detection device β.
この発明は以上の実施例に限定されるものでは全くなく
、例えば投光部（２７）Ｊ３よび受光部（２Ｇ）をカセ
ット（１）自体に取付１ノ、カセッｌ−（１） Ｓ！！
ｉ着時に投光部（２７）および受光部（２６）が複′Ｌ
ｆ機本体（２０〉に対して電気的に接続されるようＷＪ
或Ｊること、透光部（２７）と受光ａＩｓ（２１３）と
の上下関係を逆とすること、横長透光部（１７）を単な
るスリット（１７）′のみで構成すること、左右の規制
板（８）（８）を、ラックとピニオンからなる伝達機構
（図示せず）により互に連動可能に構成すること、左右
のｌＱ ＄１１板（８１（８１により用紙（Ｐ）をセン
ター合せ可能に構成し、投光部（２７） 、受光部（２
６） 、横長透光部（１１）をカヒッ１〜（１）の全幅
の１／２とすること等が可能であり、その他この発明の
要旨を変更しない範囲内において種々の設計変更を１１
１！ｉづ゛ことが可能である。The present invention is not limited to the above-mentioned embodiment at all; for example, the light emitting section (27) J3 and the light receiving section (2G) may be attached to the cassette (1) itself, and the cassette L-(1) S! !
i When the light emitting part (27) and the light receiving part (26) are attached,
f WJ so that it is electrically connected to the machine body (20)
The vertical relationship between the transparent part (27) and the light-receiving aIs (213) is reversed, the horizontally long transparent part (17) is composed of only a slit (17)', and the left and right regulation is The plates (8) (8) are constructed so that they can be interlocked with each other by a transmission mechanism (not shown) consisting of a rack and pinion, and the left and right lQ $11 plates (81 (81 allows the paper (P) to be centered). The light emitting part (27) and the light receiving part (2
6) It is possible to make the horizontally elongated transparent part (11) 1/2 of the total width of Kahi 1 to (1), and various other design changes can be made within the scope of not changing the gist of the present invention.
1! It is possible.
く効果〉
以上のようにこの発明は、カセット内の用紙を挾ｌυで
上下に対向させて投光部および受光部を設置ノ、受光部
の光電変換出力により用紙サイズを検知するようにし！
こので、投光部、受光部の侮れも固定式とすることがで
きてカセット自体の構成を複雑化させず、かつ従来品と
同等の小型サイズとし、しかも用紙の幅に対応Ｊる照射
光の光電変検出力により用紙サイズを検知して、定形用
紙サイズのみならず定形外用紙サイズをも確実かつ１館
に検知し得、更には用紙の有無、カセット装着の６烈を
も検知し得るという特有の効果を秦づる。Effects> As described above, in the present invention, the paper in the cassette is placed vertically opposite to each other with a clamp, and the light emitting part and the light receiving part are installed, and the paper size is detected by the photoelectric conversion output of the light receiving part!
With this, the light emitting part and the light receiving part can be made fixed, so the configuration of the cassette itself is not complicated, and the size is as small as the conventional product, and the irradiation light can be adjusted to fit the width of the paper. Detects the paper size using the photoelectric detection power of the machine, and can reliably detect not only standard paper sizes but also non-standard paper sizes, and can also detect the presence or absence of paper and whether the cassette is installed. The unique effect of Qinzuru.
五だ、投光部および受光部を複写機本体に取付けた場合
には、カセットと複写機本体との電気的接続部が不要と
なり、構成を簡素化し得るのみならず、摩耗等を皆無と
して寿命を長くし得るという効果をも秦する。Fifth, when the light emitter and light receiver are attached to the copying machine body, there is no need for an electrical connection between the cassette and the copying machine body, which not only simplifies the configuration, but also extends the service life with no wear and tear. It also has the effect of making it longer.
第１図はカセットの斜視図、第２図は用紙セラ１一時に
おけるカセットの平面図、第３図は用紙サイズ検知部に
カセットを装着した状態を示す縦断側面図、第４図は同
上１１断背＠図。
（１）・・・カセット、（１７）・・・横長透光部、（
２０）・・・複写機本体、（２６）・・・受光部、（２
１）・・・投光部、（１））・・・用紙。
特許出願人 三田工業株式会社
第１図
２
ｊ １）
第２図
第３図
第４図Fig. 1 is a perspective view of the cassette, Fig. 2 is a plan view of the cassette when paper caddy 1 is in position, Fig. 3 is a vertical side view showing the state in which the cassette is attached to the paper size detection unit, and Fig. 4 is a side view of the cassette in section 11 of the same. @figure. (1)...Cassette, (17)...Horizontally long transparent section, (
20)...Copier main body, (26)...Light receiving section, (2
1)...Light emitter, (1))...Paper. Patent applicant Sanda Kogyo Co., Ltd. Figure 1 2 j 1) Figure 2 Figure 3 Figure 4
Claims (1)
で上下に対向させて投光部および受光部を段番ノ、受光
部のうち用紙に辿られない部分にのみ投光して受光部の
光電変換出力によりｍ紙サイズを検知するようにしたこ
とを特徴とするカセット内の用紙サイズ検知方式。 ２、 投光部および受光部が複写機本体に取付けられで
あるとともに、カセットの光通路にあたる部分が透光可
能に形成されである上記特許請求の範囲第１項記載のカ
セット内の用紙サイズ検知方式。[Scope of Claims] 1. Hold the paper in a cassette installed in the main body of the copying machine, make them face each other vertically, and place the light emitting part and the light receiving part in the column number, and only in the part of the light receiving part that is not traced by the paper. A paper size detection method in a cassette, characterized in that the paper size in a cassette is detected by emitting light and using the photoelectric conversion output of a light receiving section. 2. The paper size detection in the cassette according to claim 1, wherein the light projecting part and the light receiving part are attached to the main body of the copying machine, and the part corresponding to the optical path of the cassette is formed to be transparent. method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22005483A JPS60111908A (en) | 1983-11-22 | 1983-11-22 | System for detecting size of paper in cassette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22005483A JPS60111908A (en) | 1983-11-22 | 1983-11-22 | System for detecting size of paper in cassette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60111908A true JPS60111908A (en) | 1985-06-18 |
Family
ID=16745203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22005483A Pending JPS60111908A (en) | 1983-11-22 | 1983-11-22 | System for detecting size of paper in cassette |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60111908A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01232362A (en) * | 1988-03-12 | 1989-09-18 | Fujitsu Ltd | Paper cassette |
| US7058353B2 (en) * | 2003-12-27 | 2006-06-06 | Samsung Electronics Co., Ltd. | Paper detecting device of paper feeding cassette and an image forming apparatus having the same |
-
1983
- 1983-11-22 JP JP22005483A patent/JPS60111908A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01232362A (en) * | 1988-03-12 | 1989-09-18 | Fujitsu Ltd | Paper cassette |
| US7058353B2 (en) * | 2003-12-27 | 2006-06-06 | Samsung Electronics Co., Ltd. | Paper detecting device of paper feeding cassette and an image forming apparatus having the same |
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